0000028412cma:RetailBankMembercma:NoninterestDomain2020-01-012020-12-31

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K
Annual Report Pursuant to Section 13 or 15(d) of the
Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the fiscal year ended
December 31, 20182021
Or
Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the transition period from __________________________ to __________________________
Commission file number 1-10706
COMERICA INCORPORATEDComerica Incorporated
(Exact Name of Registrant as Specified in Its Charter)
Delaware38-1998421
(State or Other Jurisdiction of Incorporation)(IRS Employer Identification Number)
Comerica Bank Tower
1717 Main Street, MC 6404
Dallas, Texas 75201
(Address of Principal Executive Offices) (Zip Code)
(214) 462-6831
(Registrant’s Telephone Number, Including Area Code)
Securities registered pursuant to Section 12(b) of
the Exchange Act:
ž Common Stock, $5 par value
These securities are registered on the New York Stock Exchange.
Title of each classTrading symbolName of each exchange on which registered
Common Stock, $5 par valueCMANew York Stock Exchange
Securities registered pursuant to Section 12(g) of the
Exchange Act:
None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ý No o
Indicate by check mark if registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes o No ý
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý No o
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ý No o
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ý
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerý

Accelerated filer

Accelerated filer o


Non-accelerated filero

Smaller reporting companyo
Emerging growth companyo
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.     o
Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.  ý
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No ý
At June 29, 201830, 2021 (the last business day of the registrant’s most recently completed second fiscal quarter), the registrant’s common stock, $5$5 par value, held by non-affiliates had an aggregate market value of approximately $15.3$9.4 billion based on the closing price on the New York Stock Exchange on that date of $90.92$71.34 per share. For purposes of this Form 10-K only, it has been assumed that all common shares Comerica’s Trust Department holds for Comerica’s employee plans, and all common shares the registrant’s directors and executive officers hold, are shares held by affiliates.
At February 8, 2019,14, 2022, the registrant had outstanding 159,000,514131,078,743 shares of its common stock, $5$5 par value.
Documents Incorporated by Reference:
Part III: Items 10-14—Proxy Statement for the Annual Meeting of Shareholders to be held April 23, 2019.26, 2022.



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Table of Contents
PART I
Item 1. Business.
GENERAL
Comerica Incorporated (“Comerica”) is a financial services company, incorporated under the laws of the State of Delaware in 1973, and headquartered in Dallas, Texas. Based on total assets as reported in the most recently filed Consolidated Financial Statements for Bank Holding Companies (FR Y-9C), it was among the 25 largest commercial United States (“U.S.”) financial holding companies. Comerica was formed in 1973 to acquire the outstanding common stock of Comerica Bank, which at such time was a Michigan banking corporation and one of Michigan's oldest banks (formerly Comerica Bank-Detroit). On October 31, 2007, Comerica Bank, a Michigan banking corporation, was merged with and into Comerica Bank, a Texas banking association (“Comerica Bank”). As of December 31, 2018,2021, Comerica owned directly or indirectly all the outstanding common stock of 2 active bankingsubsidiaries (Comerica Bank, a Texas banking association, and Comerica Bank & Trust, National Association) and 29 non-banking subsidiaries. At December 31, 2018,2021, Comerica had total assets of approximately $70.8$94.6 billion, total deposits of approximately $55.6$82.3 billion, total loans (net of unearned income) of approximately $50.2$49.3 billion and shareholders’ equity of approximately $7.5$7.9 billion.
Comerica has strategically aligned its operations into three major business segments: the BusinessCommercial Bank, the Retail Bank, and Wealth Management. In addition to the three major business segments, Finance is also reported as a segment.
Comerica operates in three primary geographic markets - Texas, California, and Michigan, as well as in Arizona and Florida, with select businesses operating in several other states, and in Canada and Mexico.
We provide information about the net interest income and noninterest income we received from our various classes of products and services: (1) under the caption, “Analysis of Net Interest Income” on page F-6F-4 of the Financial Section of this report; (2) under the caption “Net Interest Income”“Rate/Volume Analysis” on page F-7F-5 of the Financial Section of this report; and (3) under the caption “Noninterest Income” on pages F-8F-6 through F-9F-7 of the Financial Section of this report.
COMPETITION
The financial services business is highly competitive. Comerica and its subsidiaries mainly compete in their three primary geographic markets ofcovering the major metropolitan areas in Texas, California, and Michigan, as well as in the states of Arizona and Florida. They alsoIn addition, they compete in broader, national geographic markets, as well as markets inthroughout the continental U.S., Mexico and Canada.Canada as they pursue certain businesses on a national scale that fall outside of the primary markets, such as U.S. Banking, Mortgage Banker, Environmental Services and National Dealer Services. They arehave strategically placed offices in faster growing markets where there is a concentration of customers and industries they serve. In 2021, Comerica also expanded its presence in the Southeastern U.S. by establishing three commercial offices in North Carolina. Comerica is subject to competition with respect to various products and services, including, without limitation, commercial loans and lines of credit, deposits, cash management, capital market products, international trade finance, letters of credit, foreign exchange management services, loan syndication services, consumer lending, consumer deposit gathering, mortgage loan origination, consumer products, fiduciary services, private banking, retirement services, investment management and advisory services, investment banking services, brokerage services, the sale of annuity products, and the sale of life, disability and long-term care insurance products.
Comerica competes in termslargely on the basis of industry expertise, the range of products and services offered, pricing and reputation, customer convenience, quality customer service and responsiveness to customer needs and the overall relationship with our clients. Our competitors are large national and regional financial institutions and withas well as smaller financial institutions. Some of Comerica's larger competitors, including certain nationwide banks that have a significant presence in Comerica's market area, may make available to their customers a broader array of product, pricing and structure alternatives and, due to their asset size, may more easily absorb credit losses in a larger overall portfolio. Some of Comerica's competitors (larger or smaller) may have more liberal lending policies and processes. Increasingly, Comerica competes with other companies based on financial technology and capabilities, such as mobile banking applications and funds transfer. Further, Comerica's banking competitors may be subject to a significantly different or reduced degree of regulation due to their asset size or types of products offered. They may also have the ability to more efficiently utilize resources to comply with regulations or may be able to more effectively absorb the costs of regulations into their existing cost structure. Comerica believes that the level of competition in all geographic markets will continue to increase in the future.

In addition to banks, Comerica's banking subsidiaries also face competition from other financial intermediaries, including savings and loan associations, consumer and commercial finance companies, leasing companies, venture capital funds, credit unions, investment banks, insurance companies and securities firms. Competition among providers of financial products and services continues to increase as technology advances have lowered the barriers to entry for financial technology companies, with customers having the opportunity to select from a growing variety of traditional and nontraditional alternatives, including crowdfunding, digital wallets and money transfer services. The ability of non-banking financial institutions to provide services previously limited to commercial banks has intensified competition. Because non-banking financial institutions are not subject to many of the same regulatory restrictions as banks and bank holding companies, they can often operate with greater flexibility and lower cost structures.
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In addition, the industry continues to consolidate, which affects competition by eliminating some regional and local institutions, while potentially strengthening the franchises of acquirers.

SUPERVISION AND REGULATION
Banks, bank holding companies, and financial institutions are highly regulated at both the state and federal level. Comerica is subject to supervision and regulation at the federal level by the Board of Governors of the Federal Reserve System (“FRB”) under the Bank Holding Company Act of 1956, as amended. Comerica Bank is chartered by the State of Texas and at the state level is supervised and regulated by the Texas Department of Banking under the Texas Finance Code. Comerica Bank has elected to be a member of the Federal Reserve System under the Federal Reserve Act and, consequently, is supervised and regulated by the Federal Reserve Bank of Dallas. Comerica Bank & Trust, National Association is chartered under federal law and is subject to supervision and regulation by the Office of the Comptroller of the Currency (“OCC”) under the National Bank Act. Comerica Bank & Trust, National Association, by virtue of being a national bank, is also a member of the Federal Reserve System. Furthermore, given that Comerica Bank is a bank with assets in excess of $10 billion dollars, it is subject to supervision and regulation by the Consumer Financial Protection Bureau ("CFPB") for purposes of assessing compliance with federal consumer financial laws. The deposits of Comerica Bank and Comerica Bank & Trust, National Association are insured by the Deposit Insurance Fund (“DIF”) of the Federal Deposit Insurance Corporation (“FDIC”) to the extent provided by law, and therefore Comerica Bank and Comerica Bank & Trust, National Association are each also subject to regulation and examination by the FDIC. Certain transactions executed by Comerica Bank are also subject to regulation by the U.S. Commodity Futures Trading Commission (“CFTC”). The Department of Labor (“DOL”) regulates financial institutions providing services to plans governed by the Employee Retirement Income Security Act of 1974. Comerica Bank’s Canada branch is supervised by the Office of the Superintendent of Financial Institutions and its Mexico representative office is supervised by the Banco de México.
The FRB supervises non-banking activities conducted by companies directly and indirectly owned by Comerica. In addition, Comerica’s non-banking subsidiaries are subject to supervision and regulation by various state, federal and self-regulatory agencies, including, but not limited to, the Financial Industry Regulatory Authority, Inc. (“FINRA”), the Department of Licensing and Regulatory Affairs of the State of Michigan, and the Municipal Securities Rulemaking Board (“MSRB”) and the Securities and Exchange Commission (“SEC”) (in the case of Comerica Securities, Inc.); the Department of Insurance and Financial Services of the State of Michigan (in the case of Comerica Insurance Services, Inc.); and the DOL (in the case of Comerica Securities, Inc. and Comerica Insurance Services, Inc.); and the Securities and Exchange Commission (“SEC”) (in the case of Comerica Securities, Inc. and World Asset Management, Inc.).
Both the scope of the laws and regulations and intensity of supervision to which Comerica’s business is subject have increased over the past decade in response to the financial crisis as well as other factors such as technological and market changes. Many of these changes have occurred as a result of the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) and its implementing regulations, most of which are now in place. In 2018, with the passage of the Economic Growth, Regulatory Relief and Consumer Protection Act (“EGRRCPA”), as described below, there has been some recalibration of the post-financial crisis framework; however, Comerica’s business remains subject to extensive regulation and supervision.
Comerica is also subject to the disclosure and regulatory requirements of the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, both as administered by the SEC, as well as the rules of the New York Stock Exchange.
Described below are material elements of selected laws and regulations applicable to Comerica and its subsidiaries. The descriptions are not intended to be complete and are qualified in their entirety by reference to the full text of the statutes and regulations described. Changes in applicable law or regulation, and in their application by regulatory agencies, cannot be predicted, but they may have a material effect on the business of Comerica and its subsidiaries.
Economic Growth, Regulatory Relief and Consumer Protection Act
On May 24, 2018, EGRRCPA was signed into law. Among other regulatory changes, EGRRCPA amendsamended various sections of the Dodd-Frank Act, including section 165 of Dodd-Frank Act, which was revised to raise the asset thresholds for determining the application of enhanced prudential standards for bank holding companies. Under EGRRCPA bank holding companies with less than $100 billion of consolidated assets, including Comerica, were immediately exemptedare exempt from all of the Dodd-Frank enhanced prudential standards, except risk committee requirements, which now apply to publicly-traded bank holding companies with $50 billion or more of consolidated assets, including Comerica. requirements. As a result, Comerica currently is no longernot subject to the remaining Dodd-Frank Act supervisoryenhanced prudential standards or certain capital and company-runliquidity rules to large bank holding companies and depository institutions (the “Tailoring Rules”).Should Comerica cross the $100 billion asset threshold, it will be subject to additional and more stringent regulation. Enhanced prudential standards for U.S. banking organizations with $100 to $250 billion of consolidated assets or more include, but are not limited to: supervisory-run stress testing, required to file a resolution plan under Section 165(d) of the Dodd-Frank Act or subject totesting; internal liquidity stress testingtesting; and liquidity buffer requirements. In addition, Comerica is no longerwould be required to pay the supervision and regulation fee assessment under the Dodd-Frank Act.
On July 6, 2018, the FRB released a statement that for bank holding companies with between $50 billion and $100 billion in total consolidated assets, including Comerica, the FRB would take no action to require such bank holding companies to comply with the Comprehensive Capital Analysis and Review (“CCAR”) process or the Liquidity Coverage Ratio. On October 31, 2018, the FRB proposed rules that would revise its regulations to raise the asset thresholds for these requirements so that bank holding companies with less than $100 billion in total consolidated assets would be exempt.
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Also on July 6, 2018, the federal banking regulators issued an interagency statement that banks with less than $100 billion in total consolidated assets, including Comerica Bank, would not be required to comply with company-run stress testing requirements until November 25, 2019, at which time such banks will become exempt from company-run stress testing requirements
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under the EGRRCPA. In addition, the federal banking regulators have each issued proposed rules that would revise their stress testing regulations consistent with the EGRRCPA.
Requirements for Approval of Activities and Acquisitions
The Gramm-Leach-Bliley Act expanded the activities in which a bank holding company registered as a financial holding company can engage. Comerica became a financial holding company in 2000. As a financial holding company, Comerica may affiliate with securities firms and insurance companies, and engage in activities that are financial in nature or incidental or complementary to activities that are financial in nature. Activities that are “financial in nature” include, but are not limited to: securities underwriting; securities dealing and market making; sponsoring mutual funds and investment companies (subject to regulatory requirements described below); insurance underwriting and agency; merchant banking; and activities that the FRB determines, in consultation with the Secretary of the United States Treasury, to be financial in nature or incidental to a financial activity. “Complementary activities” are activities that the FRB determines upon application to be complementary to a financial activity and that do not pose a substantial risk to the safety or soundness of depository institutions or the financial system generally.
In order to maintain its status as a financial holding company, Comerica and each of its depository institution subsidiaries must each remain “well capitalized” and “well managed,” and Comerica, Comerica Bank and Comerica Bank & Trust, National Association are each “well capitalized” and “well managed” under FRB standards. If Comerica or any subsidiary bank of Comerica were to cease being “well capitalized” or “well managed” under applicable regulatory standards, the FRB could place limitations on Comerica’s ability to conduct the broader financial activities permissible for financial holding companies or impose limitations or conditions on the conduct or activities of Comerica or its affiliates. If the deficiencies persisted, the FRB could order Comerica to divest any subsidiary bank or to cease engaging in any activities permissible for financial holding companies that are not permissible for bank holding companies, or Comerica could elect to conform its non-banking activities to those permissible for a bank holding company that is not also a financial holding company.
In addition, the Community Reinvestment Act of 1977 (“CRA”) requires U.S. banks to help serve the credit needs of their communities. Comerica Bank’s current rating under the CRA is “satisfactory.“Satisfactory.” If any subsidiary bank of Comerica were to receive a rating under the CRA of less than “satisfactory,“Satisfactory,” Comerica would be prohibited from engaging in certain activities.
Federal and state laws impose notice and approval requirements for mergers and acquisitions of other depository institutions or bank holding companies. In many cases, no FRB approval is required for Comerica to acquire a company engaged in activities that are financial in nature or incidental to activities that are financial in nature, as determined by the FRB. Prior approval is required before Comerica may acquire the beneficial ownership or control of more than 5% of any class of voting shares or substantially all of the assets of a bank holding company (including a financial holding company) or a bank. In considering applications for approval of acquisitions, the banking regulators may take several factors into account, including whether Comerica and its subsidiaries are well capitalized and well managed, are in compliance with anti-money laundering laws and regulations, or have CRA ratings of less than “satisfactory.“Satisfactory.
Acquisitions of Ownership of Comerica
Acquisitions of Comerica’s voting stock above certain thresholds are subject to prior regulatory notice or approval under federal banking laws, including the Bank Holding Company Act of 1956 and the Change in Bank Control Act of 1978. Under the Change in Bank Control Act, a person or entity generally must provide prior notice to the FRB before acquiring the power to vote 10% or more of Comerica’s outstanding common stock. On March 2, 2020, the FRB issued a final rule revising regulations related to control determinations under the Bank Holding Company Act. The final rule expands the number of presumptions of control for use in such determinations. Investors should be aware of these requirements when acquiring shares of Comerica’s stock.
Capital and Liquidity
Comerica and its bank subsidiaries are subject to risk-based capital requirements and guidelines imposed by the FRB, FDIC and/or the OCC. In calculating risk-based capital requirements, a depository institution’s or holding company’s assets and certain specified off-balance sheet commitments are assigned to various risk categories defined by the FRB, each weighted differently based on the level of credit risk that is ascribed to such assets or commitments, based on counterparty type, asset class and asset class.maturity. A depository institution’s or holding company’s capital is divided into three tiers: Common Equity Tier 1 (“CET1”), additional Tier 1, and Tier 2. CET1 capital predominantly includes common shareholders’ equity, less certain deductions for goodwill, intangible assets and deferred tax assets that arise from net operating losses and tax credit carry-forwards, if any. Additional Tier 1 capital primarily includes any outstanding noncumulative perpetual preferred stock and related surplus. Comerica has also made the election to permanently exclude accumulated other comprehensive income related to debt and equity securities classified as available-for-sale, cash flow hedges, and defined benefit postretirement plans from CET1 capital. Tier 2 capital primarily includes qualifying subordinated debt and qualifying allowance for credit losses. The ultimate treatment for certain specific deductions and adjustments is yet to be determined pending the finalization of a proposal by banking regulators to simplify certain aspects of the capital rules. In addition, in December 2018,On September 30, 2020, the federal banking regulators adopted rulesagencies issued a final rule that would permit bank holding companies and banks to phase in, for regulatory capital purposes,provides banking organizations that implement the day-one impact of the new current expected credit loss ("CECL"(“CECL”) accounting rulestandard during the 2020 calendar year the option to delay for two years an estimate of CECL’s effect on retained earnings overregulatory capital, relative to the incurred loss methodology’s effect on regulatory capital, followed by a period
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three-year transition period. While Comerica elected this deferral, there was no deferral amount at December 31, 2021. More information is set forth in the “Capital” section located on pages F-18F-16 through F-20.

F-17.
Entities that engage in trading activities that exceed specified levels also are required to maintain capital to account for market risk. Market risk includes changes in the market value of trading account, foreign exchange, and commodity positions, whether resulting from broad market movements (such as changes in the general level of interest rates, equity prices, foreign exchange rates, or commodity prices) or from position specific factors. From time to time, Comerica’s trading activities may exceed specified regulatory levels, in which case Comerica adjusts its risk-weighted assets to account for market risk as required.
Comerica and its bank subsidiaries, like other bank holding companies and banks, currently are required to maintain a minimum CET1 capital ratio, minimum Tier 1 capital ratio and minimum total capital ratio equal to at least 4.5 percent, 6 percent and 8 percent of their total risk-weighted assets (including certain off-balance-sheet items, such as standby letters of credit), respectively. In 2018, Comerica and its bank subsidiaries were alsoare required to maintain a minimum capital conservation buffer of 1.8752.5 percent in order to avoid restrictions on capital distributions and discretionary bonuses. The minimum required capital conservation buffer increased to 2.5 percent as of January 1, 2019. Comerica and its bank subsidiaries are also required to maintain a minimum “leverage ratio” (Tier 1 capital to non-risk-adjusted average total assets) of 4 percent.
To be well capitalized, Comerica’s bank subsidiaries are required to maintain a minimum leverage ratio, minimum CET1 capital ratio, minimum Tier 1 capital ratio and minimum total capital ratio and a leverage ratio equal to at least 5.0 percent, 6.5 percent, 8.0 percent and 10.0 percent, and 5.0 percent, respectively. The FRB has not yet revised the minimum requirements for bank holding companies to be considered well capitalized to reflect the higher capital requirements imposed under the current capital rules. For purposes of the FRB’s Regulation Y, including determining whether a bank holding company meets the requirements to be a financial holding company, bank holding companies, such as Comerica, must maintain a Tier 1 capital ratio of at least 6.0 percent and a total capital ratio of at least 10.0 percent to be well capitalized. If the FRB were to apply the same or a very similar minimum requirement to be considered well capitalized to bank holding companies as that applicable to Comerica’s bank subsidiaries, Comerica’s capital ratios as of December 31, 2018 would exceed such revised minimum requirements. The FRB may require bank holding companies, including Comerica, to maintain capital ratios substantially in excess of mandated minimum levels, depending upon general economic conditions and a bank holding company’s particular condition, risk profile and growth plans.
Failure to be well capitalized or to meet minimum capital requirements could result in certain mandatory and possible additional discretionary actions by regulators, including restrictions on Comerica’s or its bank subsidiaries’ ability to pay dividends or otherwise distribute capital or to receive regulatory approval of applications, or other restrictions on growth.
At December 31, 2018,2021, Comerica met all of its minimum risk-based capital ratio and leverage ratio requirements plus the applicable countercyclicalcapital conservation buffer and the applicable well capitalized requirements, as shown in the table below:
(dollar amounts in millions)
Comerica
Incorporated
(Consolidated)
 
Comerica
Bank
December 31, 2018   
CET1 capital (minimum $3.0 billion (Consolidated))$7,470
 $7,229
Tier 1 capital (minimum $4.0 billion (Consolidated))7,470
 7,229
Total capital (minimum $5.4 billion (Consolidated))8,855
 8,433
Risk-weighted assets67,047
 66,857
Adjusted average assets (fourth quarter)71,070
 70,905
CET1 capital to risk-weighted assets (minimum 4.5%)11.14% 10.81%
Tier 1 capital to risk-weighted assets (minimum 6.0%)11.14
 10.81
Total capital to risk-weighted assets (minimum 8.0%)13.21
 12.61
Tier 1 capital to average assets (minimum 4.0%)10.51
 10.20
Capital conservation buffer5.14
 4.61
December 31, 2017   
CET1 capital (minimum $3.0 billion (Consolidated))$7,773
 $7,121
Tier 1 capital (minimum $4.0 billion (Consolidated))7,773
 7,121
Total capital (minimum $5.3 billion (Consolidated))9,211
 8,378
Risk-weighted assets66,575
 66,447
Adjusted average assets (fourth quarter)71,372
 71,181
CET1 capital to risk-weighted assets (minimum 4.5%)11.68% 10.72%
Tier 1 capital to risk-weighted assets (minimum 6.0%)11.68
 10.72
Total capital to risk-weighted assets (minimum 8.0%)13.84
 12.61
Tier 1 capital to average assets (minimum 4.0%)10.89
 10.00
Capital conservation buffer5.68
 4.61
Comerica was previously required to comply with the modified Liquidity Coverage Ratio and would have been required to comply with the proposed Net Stable Funding Ratio. However, as discussed above, the FRB has stated that it will take no action to require bank holding companies with less than $100 billion in total consolidated assets, including Comerica, to comply with

the modified Liquidity Coverage Ratio. In addition, the banking regulators proposed a rule on October 31, 2018, that would raise the asset threshold for the proposed Net Stable Funding Ratio rule to apply to firms with more than $100 billion in total consolidated assets, and therefore, Comerica would not be required to comply with this rule as currently proposed.
(dollar amounts in millions)Comerica
Incorporated
(Consolidated)
Comerica
Bank
December 31, 2021
CET1 capital (minimum $3.1 billion (Consolidated))$7,064 $7,634 
Tier 1 capital (minimum $4.2 billion (Consolidated))7,458 7,634 
Total capital (minimum $5.6 billion (Consolidated))8,608 8,584 
Risk-weighted assets69,708 69,542 
Average assets (fourth quarter)96,417 96,216 
CET1 capital to risk-weighted assets (minimum-4.5%)10.13 %10.98 %
Tier 1 capital to risk-weighted assets (minimum-6.0%)10.70 10.98 
Total capital to risk-weighted assets (minimum-8.0%)12.35 12.34 
Tier 1 capital to average assets (minimum-4.0%)7.74 7.93 
Capital conservation buffer (minimum-2.5%)4.35 4.34 
December 31, 2020
CET1 capital (minimum $3.0 billion (Consolidated))$6,919 $7,278 
Tier 1 capital (minimum $4.0 billion (Consolidated))7,313 7,278 
Total capital (minimum $5.4 billion (Consolidated))8,833 8,547 
Risk-weighted assets66,931 66,759 
Average assets (fourth quarter)84,705 84,536 
CET1 capital to risk-weighted assets (minimum-4.5%)10.34 %10.90 %
Tier 1 capital to risk-weighted assets (minimum-6.0%)10.93 10.90 
Total capital to risk-weighted assets (minimum-8.0%)13.20 12.80 
Tier 1 capital to average assets (minimum-4.0%)8.63 8.61 
Capital conservation buffer (minimum-2.5%)4.93 4.80 
Additional information on the calculation of Comerica’s and its bank subsidiaries’ CET1 capital, Tier 1 capital, total capital and risk-weighted assets is set forth in the “Capital” section located on pages F-18F-16 through F-20F-17 of the Financial Section of this report and Note 20 of the Notes to Consolidated Financial Statements located on pages F-92 through F-93F-94 of the Financial Section of this report.
Annual Capital Plans and Stress Tests
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Comerica was previously subject to the FRB’s annual CCAR process, including the requirement to submit an annual capital plan to the FRB for non-objection. However, as discussed above, the FRB has stated that it will take no action to require bank holding companies with less than $100 billion in total consolidated assets, including Comerica, to comply with the requirements
Table of the CCAR process, and on October 31, 2018, the FRB proposed rules that would revise its regulations to raise the asset thresholds for these requirements such that bank holding companies with less than $100 billion in total consolidated assets would be exempt.Contents
Comerica and Comerica Bank were also previously subject to Dodd-Frank Act stress testing requirements. As discussed above, as a bank holding company with less than $100 billion in total consolidated assets Comerica was immediately exempted from Dodd-Frank Act supervisory and company-run stress testing requirements by the EGRRCPA, and Comerica Bank, as a bank with less than $100 billion in total consolidated assets, will be exempt from company-run stress testing requirements under the EGRRCPA on November 25, 2019, and will not be required to comply with them during the intervening period. The federal banking regulators have proposed rules that would revise their respective regulations to raise the asset thresholds for these requirements such that bank holding companies and banks with less than $100 billion in total consolidated assets would be exempt.
Federal Deposit Insurance Corporation Improvement Act
The Federal Deposit Insurance Corporation Improvement Act (“FDICIA”) requires, among other things, the federal banking agencies to take “prompt corrective action” with respect to depository institutions that do not meet certain minimum capital requirements. FDICIA establishes five capital tiers: “well capitalized,” “adequately capitalized,” “undercapitalized,” “significantly undercapitalized” and “critically undercapitalized.” An institution that fails to remain well capitalized becomes subject to a series of restrictions that increase in severity as its capital condition weakens. Such restrictions may include a prohibition on capital distributions, restrictions on asset growth or restrictions on the ability to receive regulatory approval of applications. The FDICIA also provides for enhanced supervisory authority over undercapitalized institutions, including authority for the appointment of a conservator or receiver for the institution.
As of December 31, 2018,2021, each of Comerica’s bank subsidiaries’ capital ratios exceeded those required for an institution to be considered “well capitalized” under these regulations.
As an additional means to identify problems in the financial management of depository institutions, FDICIA requires federal bank regulatory agencies to establish certain non-capital-based safety and soundness standards for institutions any such agency supervises. The standards relate generally to, among others, earnings, liquidity, operations and management, asset quality, various risk and management exposures (e.g., credit, operational, market, interest rate, etc.) and executive compensation. The agencies are authorized to take action against institutions that fail to meet such standards.
FDICIA also contains a variety of other provisions that may affect the operations of depository institutions including reporting requirements, regulatory standards for real estate lending, “truth in savings” provisions, the requirement that a depository institution give 90 days prior notice to customers and regulatory authorities before closing any branch, and a prohibition on the acceptance or renewal of brokered deposits by depository institutions that are not well capitalized or are adequately capitalized and have not received a waiver from the FDIC.
Dividends
Comerica Incorporated is a legal entity separate and distinct from its banking and other subsidiaries. Since Comerica’s consolidated net income and liquidity consists largely of net income of and dividends received from Comerica’s bank subsidiaries, Comerica’s ability to pay dividends and repurchase shares depends upon its receipt of dividends from these subsidiaries. There are statutory and regulatory requirements applicable to the payment of dividends by subsidiary banks to Comerica, as well as by Comerica to its shareholders. Certain, but not all, of these requirements are discussed below. No assurances can be given that Comerica’s bank subsidiaries will, in any circumstances, pay dividends to Comerica.
Comerica Bank and Comerica Bank & Trust, National Association are required by federal law to obtain the prior approval of the FRB and/or the OCC, as the case may be, for the declaration and payment of dividends, if the total of all dividends declared by the board of directors of such bank in any calendar year will exceed the total of (i) such bank's retained net income (as defined and interpreted by regulation) for that year plus (ii) the retained net income (as defined and interpreted by regulation) for the

preceding two years, less any required transfers to surplus or to fund the retirement of preferred stock. At January 1, 2019,2022, Comerica's subsidiary banks could declare aggregate dividends of approximately $108$347 million from retained net profits of the preceding two years. Comerica's subsidiary banks declared dividends of $1.1$852 million in 2021, $498 million in 2020 and $1.2 billion in 2018, $907 million in 2017 and $545 million in 2016.2019.
Comerica and its bank subsidiaries must maintain the applicablea CET1 capital conservation buffer of 2.5% to avoid becoming subject to restrictions on capital distributions, including dividends. The capital conservation buffer is currently at its fully phased-in level of 2.5%.
Furthermore, federal regulatory agencies can prohibit a bank or bank holding company from paying dividends under circumstances in which such payment could be deemed an unsafe and unsound banking practice. Under the FDICIA “prompt corrective action” regime discussed above, which applies to each of Comerica Bank and Comerica Bank & Trust, National Association, a bank is specifically prohibited from paying dividends to its parent company if payment would result in the bank becoming “undercapitalized.” In addition, Comerica Bank is also subject to limitations under Texas state law regarding the amount of earnings that may be paid out as dividends to Comerica, and requires prior approval for payments of dividends that exceed certain levels.
FRB policysupervisory guidance generally provides that a bank holding company should not pay dividends unless (1) the bank holding company’s net income over the last four quarters (net of dividends paid) is sufficient to fully fund the dividends, (2) the prospective rate of earnings retention appears consistent with the capital needs, asset quality and overall financial condition of the bank holding company and its subsidiaries and (3) the bank holding company will continue to meet minimum required capital adequacy ratios. The policysupervisory guidance also provides that a bank holding company should inform the FRB reasonably in advance of declaring or paying a dividend that exceeds earnings for the period for which the dividend is being paid or that could result in a material adverse change to the bank holding company’s capital structure. Bank holding companies also are required to consult with the FRB before redeeming or repurchasing capital instruments (including common stock), or materially increasing dividends.
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Transactions with Affiliates
Federal banking laws and regulations impose qualitative standards and quantitative limitations upon certain transactions between a bank and its affiliates, including between Comerica and its nonbank subsidiaries, on the one hand, and Comerica’s affiliate insured depository institutions, on the other. For example, Section 23A of the Federal Reserve Act limits the aggregate outstanding amount of any insured depository institution’s loans and other “covered transactions” with any particular nonbank affiliate (including financial subsidiaries) to no more than 10% of the institution’s total capital and limits the aggregate outstanding amount of any insured depository institution’s covered transactions with all of its nonbank affiliates to no more than 20% of its total capital. “Covered transactions” are defined by statute to include (i) a loan or extension of credit to an affiliate, (ii) a purchase of securities issued by an affiliate, (iii) a purchase of assets (unless otherwise exempted by the FRB) from the affiliate, (iv) the acceptance of securities issued by the affiliate as collateral for a loan, (v) the issuance of a guarantee, acceptance or letter of credit on behalf of an affiliate and (vi) securities borrowing or lending transactions and derivative transactions with an affiliate, to the extent that either causes a bank or its affiliate to have credit exposure to the securities borrowing/lending or derivative counterparty. Section 23A of the Federal Reserve Act also generally requires that an insured depository institution’s loans to its nonbank affiliates be, at a minimum, 100% secured, and Section 23B of the Federal Reserve Act generally requires that an insured depository institution’s transactions with its nonbank affiliates be on terms and under circumstances that are substantially the same or at least as favorable as those prevailing for comparable transactions with nonaffiliates. Federal banking laws also place similar restrictions on loans and other extensions of credit by FDIC-insured banks, such as Comerica Bank and Comerica Bank & Trust, National Association, and their subsidiaries to their directors, executive officers and principal shareholders.
Data Privacy and Cybersecurity Regulation
Comerica is subject to many U.S. federal, U.S. state and international laws and regulations governing consumer data privacy protection, which require, among other things, maintaining policies and procedures to protect the non-public confidential information of customers and employees. The privacy provisions of the Gramm-Leach-Bliley Act generally prohibit financial institutions, including Comerica and its subsidiaries, from disclosing nonpublic personal financial information of consumer customers to third parties for certain purposes (primarily marketing) unless customers have the opportunity to “opt out” of the disclosure. Other laws and regulations, at the international, federal and state levels, limit Comerica’s ability to share certain information with affiliates and non-affiliates for marketing and/or non-marketing purposes, or to contact customers with marketing offers. The Gramm-Leach-Bliley Act also requires banks to implement a comprehensive information security program that includes administrative, technical and physical safeguards to ensure the security and confidentiality of customer records and information. Because we have a limited presence in New York, we are subject to certain requirements of the New York Department of Financial Service’s Cybersecurity Requirements for Financial Services Companies, which include maintaining a cybersecurity program and policies and breach notification requirements.
In October 2016, the federal banking regulators issued an advance notice of proposed rulemaking regarding enhanced cyber risk management standards, which would apply to a wide range of large financial institutions, including Comerica, and their third-party service providers. The proposed standards would expand existing cybersecurity regulations and guidance to focus on

cyber risk governance and management; management of internal and external dependencies; and incident response, cyber resilience and situational awareness. In addition, the proposal contemplates more stringent standards for institutions with systems that are critical to the financial sector. Comerica is monitoringcontinues to monitor the development of this rule.
Data privacy and data protection are areas of increasing state legislative focus. For example, in June of 2018, the Governor of California signed into law the California Consumer Privacy Act of 2018 (the “CCPA”). The CCPA, which becomesbecame effective on January 1, 2020, applies to for-profit businesses that conduct business in California and meet certain revenue or data collection thresholds. The CCPA will givegives consumers the right to request disclosure of information collected about them, and whether that information has been sold or shared with others, the right to request deletion of personal information (subject to certain exceptions), the right to opt out of the sale of the consumer’s personal information, and the right not to be discriminated against for exercising these rights. The CCPA contains several exemptions, including an exemption applicable to information that is collected, processed, sold or disclosed pursuant to the Gramm-Leach-Bliley Act. The California Attorney General has not yet proposed or adopted regulations implementing the CCPA and the California State Legislature has amended the Act since its passage.on August 14, 2020. Comerica has a physical footprint in California and will beis required to comply with the CCPA. In addition, similar laws may be adopted by other states where Comerica does business. The impact of the CCPA on Comerica’s business is yet to be determined. The federal government may also pass data privacy or data protection legislation.
Like other lenders, Comerica Bank and other of Comerica’s subsidiaries use credit bureau data in their underwriting activities. Use of such data is regulated under the Fair Credit Reporting Act (“FCRA”), and the FCRA also regulates reporting information to credit bureaus, prescreening individuals for credit offers, sharing of information between affiliates, and using affiliate data for marketing purposes. Similar state laws may impose additional requirements on Comerica and its subsidiaries.
FDIC Insurance Assessments
The DIF provides deposit insurance coverage for certain deposits up to $250,000 per depositor in each deposit account category. Comerica's subsidiary banks are subject to FDIC deposit insurance assessments to maintain the DIF. The FDIC imposes a risk-based deposit premium assessment system, where the assessment rates for an insured depository institution are
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determined by an assessment rate calculator, which is based on a number of elements to measure the risk each institution poses to the DIF. The assessment rate is applied to total average assets less tangible equity. Under the current system, premiums are assessed quarterly and could increase if, for example, criticized loans and/or other higher risk assets increase or balance sheet liquidity decreases. For 2018,2021, Comerica’s FDIC insurance expense totaled $42 million, including the DIF surcharge that was in place from mid-2016 until September 30, 2018. For 2019, management expects a reduction in deposit insurance assessments of $16 million as a result of the elimination of the DIF surcharge.$22 million.
Anti-Money Laundering Regulations
The    Comerica is subject to several federal laws that are designed to combat money laundering, terrorist financing, and transactions with persons, companies or foreign governments designated by U.S. authorities ("AML laws"). This category of laws includes the Bank Secrecy Act, the Money Laundering Control Act, and the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act (“of 2001, or USA PATRIOT Act”) of 2001Act.
    The AML laws and itstheir implementing regulations require insured depository institutions, broker-dealers, and certain other financial institutions to have policies, procedures, and controls to detect, prevent, and report money laundering and terrorist financing. The USA PATRIOT ActAML laws and itstheir regulations also provide for information sharing, subject to conditions, between federal law enforcement agencies and financial institutions, as well as among financial institutions, for counter-terrorism purposes. Federal banking regulators are required, when reviewing bank holding company acquisition and bank merger applications, to take into account the effectiveness of the anti-money laundering activities of the applicants. To comply with these obligations, Comerica and its various operating units have implemented appropriate internal practices, procedures, and controls.
Office of Foreign Assets Control Regulation
The Office of Foreign Assets Control (“OFAC”) is responsible for administering economic sanctions that affect transactions with designated foreign countries, nationals and others, as defined by various Executive Orders and Acts of Congress. OFAC-administered sanctions take many different forms. For example, sanctions may include: (1) restrictions on trade with or investment in a sanctioned country, including prohibitions against direct or indirect imports from and exports to a sanctioned country and prohibitions on U.S. persons engaging in financial transactions relating to, making investments in, or providing investment-related advice or assistance to, a sanctioned country; and (2) a blocking of assets in which the government or “specially designated nationals” of the sanctioned country have an interest, by prohibiting transfers of property subject to U.S. jurisdiction (including property in the possession or control of U.S. persons). OFAC also publishes lists of persons, organizations, and countries suspected of aiding, harboring or engaging in terrorist acts, known as Specially Designated Nationals and Blocked Persons. Blocked assets (e.g., property and bank deposits) cannot be paid out, withdrawn, set off or transferred in any manner without a license from OFAC. Failure to comply with these sanctions could have serious legal and reputational consequences.

Interstate Banking and Branching
The Interstate Banking and Branching Efficiency Act (the “Interstate Act”), as amended by the Dodd-Frank Act, permits a bank holding company, with FRB approval, to acquire banking institutions located in states other than the bank holding company's home state without regard to whether the transaction is prohibited under state law, but subject to any state requirement that the bank has been organized and operating for a minimum period of time, not to exceed five years, and the requirement that the bank holding company, prior to and following the proposed acquisition, control no more than 10 percent of the total amount of deposits of insured depository institutions in the U.S. and no more than 30 percent of such deposits in that state (or such amount as established by state law if such amount is lower than 30 percent). The Interstate Act, as amended, also authorizes banks to operate branch offices outside their home states by merging with out-of-state banks, purchasing branches in other states and by establishing de novo branches in other states, subject to various conditions. In the case of purchasing branches in a state in which it does not already have banking operations, de novo interstate branching is permissible if under the law of the state in which the branch is to be located, a state bank chartered by that state would be permitted to establish the branch. A bank holding company or bank must be well capitalized and well managed in order to take advantage of these interstate banking and branching provisions.
Comerica has consolidated the majority of its banking business into one bank, Comerica Bank, with banking centers in Texas, Arizona, California, Florida and Michigan, as well as Canada.
Source of Strength and Cross-Guarantee Requirements
Federal law and FRB regulations require that bank holding companies serve as a source of strength to each subsidiary bank and commit resources to support each subsidiary bank. This support may be required at times when a bank holding company may not be able to provide such support without adversely affecting its ability to meet other obligations. The FRB may require a bank holding company to make capital injections into a troubled subsidiary bank and may charge the bank holding company with engaging in unsafe and unsound practices if the bank holding company fails to commit resources to such a subsidiary bank or if it undertakes actions that the FRB believes might jeopardize the bank holding company’s ability to commit resources to such subsidiary bank. Under these requirements, Comerica may in the future be required to provide
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financial assistance to its subsidiary banks should they experience financial distress. Capital loans by Comerica to its subsidiary banks would be subordinate in right of payment to deposits and certain other debts of the subsidiary banks. In the event of Comerica’s bankruptcy, any commitment by Comerica to a federal bank regulatory agency to maintain the capital of its subsidiary banks would be assumed by the bankruptcy trustee and entitled to a priority of payment.
Similarly, under the cross-guarantee provisions of the Federal Deposit Insurance Act, in the event of a loss suffered or anticipated by the FDIC (either as a result of the failure of a banking subsidiary or related to FDIC assistance provided to such a subsidiary in danger of failure), the other banking subsidiaries may be assessed for the FDIC’s loss, subject to certain exceptions. An FDIC cross-guarantee claim against a depository institution is superior in right of payment to claims of the holding company and its affiliates against such depository institution.
Supervisory and Enforcement Powers of Federal and State Banking Agencies
The FRB and other federal and state banking agencies have broad supervisory and enforcement powers, including, without limitation, and as prescribed to each agency by applicable law, the power to conduct examinations and investigations, impose nonpublic supervisory agreements, issue cease and desist orders, terminate deposit insurance, impose substantial fines and other civil penalties and appoint a conservator or receiver. Failure to comply with applicable laws or regulations could subject Comerica or its banking subsidiaries, as well as officers and directors of these organizations, to administrative sanctions and potentially substantial civil and criminal penalties. Bank regulators regularly examine the operations of bank holding companies and banks, and the results of these examinations, as well as certain supervisory and enforcement actions, are confidential and may not be made public.
Resolution Plans
Before the enactment of EGRRCPA, Comerica was required to prepare and submitAs a resolution plan to the FRB and FDIC. As discussed above, pursuant to EGRRCPA, Comerica is now exempt from this requirement as a bank holding company with less than $100 billion in total consolidated assets.
EGRRCPA did not change the FDIC’s rules that require depository institutionsinstitution with $50 billion or more of total consolidated assets, including Comerica Bank is required to periodically file a separate resolution plan. The FDIC’s Chairman, however, has stated thatplan with the FDIC. On April 16, 2019, the FDIC intends to releasereleased an advanced notice of proposed rulemaking (“ANPR”) with respect to the FDIC’s bank resolution plan requirements meant to better tailor bank resolution plans to a firm’s size, complexity and risk profile. The ANPR offers two alternative approaches to resolution planning for commenters to consider and solicits comment on how to tailor the requirements of the rule to reflect differences in size, complexity and other factors among the population of large insured depository institutions, and on whether to increase the current threshold of $50 billion in assets that triggers application of the rule. In connection with this rulemaking, the FDIC placed a moratorium on resolution plans until the rulemaking process was complete.
On June 25, 2021, the FDIC lifted the moratorium on resolution plan submissions for institutions with $100 billion or more in total assets. Under the FDIC’s Statement on Resolution Plans for IDIs, an institution will be required to submit resolution plans when it has $100 billion or more in total assets as determined based upon the average of the institution’s four most recent Reports of Condition and Income.
Incentive-Based Compensation
Comerica is subject to guidance issued by the FRB, OCC and FDIC intended to ensure that the incentive compensation policies of banking organizations do not undermine the safety and soundness of such organizations by encouraging excessive risk-taking. The guidance, which covers senior executives as well as other employees who, either individually or as part of a group,

have the ability to expose the banking organization to material amounts of risk, is based upon the key principles that a banking organization's incentive compensation arrangements (i) should provide employees incentives that appropriately balance risk and financial results in a manner that does not encourage employees to expose their organizations to imprudent risk; (ii) should be compatible with effective controls and risk-management; and (iii) should be supported by strong corporate governance, including active and effective oversight by the organization's board of directors. Banking organizations are expected to review regularly their incentive compensation arrangements based on these three principles. Where there are deficiencies in the incentive compensation arrangements, they should be promptly addressed. Enforcement actions may be taken against a banking organization if its incentive compensation arrangements, or related risk-management control or governance processes, pose a risk to the organization's safety and soundness, particularly if the organization is not taking prompt and effective measures to correct the deficiencies. Similar to other large banking organizations, Comerica has been subject to a continuing review of incentive compensation policies and practices by representatives of the FRB, the Federal Reserve Bank of Dallas and the Texas Department of Banking since 2011. As part of that review, Comerica has undertaken a thorough analysis of all the incentive compensation programs throughout the organization, the individuals covered by each plan and the risks inherent in each plan’s design and implementation. Comerica has determined that risks arising from employee compensation plans are not reasonably likely to have a material adverse effect on Comerica. It is Comerica’s intent to continue to evolve its incentive compensation processes going forward by monitoring regulations and best practices for sound incentive compensation.compensation practices.
In 2016, the FRB, OCC and several other federal financial regulators revised and re-proposed rules to implement Section 956 of the Dodd-Frank Act. Section 956 directed regulators to jointly prescribe regulations or guidelines prohibiting incentive-based payment arrangements, or any feature of any such arrangement, at covered financial institutions that encourage
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inappropriate risks by providing excessive compensation or that could lead to a material financial loss. This proposal supplements the final guidance issued by the banking agencies in June 2010. Consistent with the Dodd-Frank Act, the proposed rule would impose heightened standards for institutions with $50 billion or more in total consolidated assets, which includes Comerica. For these larger institutions, the proposed rule would require the deferral of at least 40 percent of incentive-based payments for designated executives and significant risk-takers who individually have the ability to expose the institution to possible losses that are substantial in relation to the institution's size, capital or overall risk tolerance. Moreover, incentive-based compensation of these individuals would be subject to potential clawback for seven years following vesting. Further, the rule imposes enhanced risk management controls and governance and internal policy and procedure requirements with respect to incentive compensation. Comerica is monitoring the development of this rule.
The Volcker Rule
Comerica is prohibited under the Volcker Rule from (1) engaging in short-term proprietary trading for its own account and (2) having certain ownership interests in and relationships with hedge funds or private equity funds ("Covered Funds"). The Volcker Rule regulations contain exemptions for market-making, hedging, underwriting and trading in U.S. government and agency obligations, and also permit certain ownership interests in certain types of Covered Funds to be retained. They also permit the offering and sponsoring of Covered Funds under certain conditions. The Volcker Rule regulations impose significant compliance and reporting obligations on banking entities.
Comerica has put in place the compliance programs currently required by the Volcker Rule and has either divested or received extensions for any holdings in Covered Funds. Additional information on Comerica's portfolio of indirect (through funds) private equity and venture capital investments, which includes the Covered Funds, is set forth in Note 1 of the Notes to Consolidated Financial Statements located on page F-49 of the Financial Section of this report.
In May 2018,October 2019, the five federal agencies with rulemaking authority with respect to the Volcker Rule released a proposalfinalized changes designed to revisesimplify compliance with the Volcker Rule. The proposal would tailorfinal rule formalized a three-tiered approach to compliance program requirements for banking entities based on their level of trading activity. As a banking entity with “moderate” trading assets and liabilities (less than $20 billion), Comerica is subject to simplified compliance requirements. In June 2020, regulators finalized a rule further modifying the Volcker Rule’s compliance requirementsprohibition on banking entities investing in or sponsoring Covered Funds. The final rule modifies three areas of the rule by: streamlining the covered funds portion of the rule; addressing the extraterritorial treatment of certain foreign funds; and permitting banking entities to the amount of a firm’s trading activity, revise the definition of trading account, clarify certain key provisionsoffer financial services and engage in other activities that do not raise concerns that the Volcker Rule and modify the information companies are requiredwas intended to provide the federal agencies.address. Comerica is following the development of this proposed rule.continues to follow Volcker Rule developments.
Derivative Transactions
As a state member bank, Comerica Bank may engage in derivative transactions, as permitted by applicable Texas and federal law. Title VII of the Dodd-Frank Act contains a comprehensive framework for over-the-counter (“OTC”) derivatives transactions. Even though many of the requirements do not impact Comerica directly, since Comerica Bank does not meet the definition of swap dealer or “majormajor swap participant, Comerica continues to review and evaluate the extent to which such requirements impact its business indirectly. On November 5, 2018, the CFTC issued a final rule that sets the permanent aggregate gross notional amount threshold for the de minimis exception from the definition of swap dealer at $8 billion in swap dealing activity entered into by a person over the preceding 12 months. Comerica's swap dealing activities for purposes of the de minimis exception are currently below this threshold.
The initial margin requirements for non-centrally cleared swaps and security-based swaps will be effective for Comerica’s swap and security-based swap counterparties that are swap dealers or major swap participants on September 1, 2020,2022, at which time such counterparties will be required to collect initial margin from Comerica. The initial margin requirements were issued for the purpose of ensuring safety

and soundness of swap trading in light of the risk to the financial system associated with non-cleared swaps activity. Comerica is currently working toward meeting compliance with the initial margin requirements.
Consumer Financial Protection Bureau and Certain Recent Consumer Finance Regulations
Comerica is subject to regulation by the Consumer Financial Protection Bureau (“CFPB”),CFPB, which has a broad rule-making authority for a wide range of consumer protection laws that apply to all banks and savings institutions and possesses examination and enforcement authority over all banks and savings institutions with more than $10 billion in assets, including Comerica Bank, and their depositary affliates.affiliates.
Comerica is also subject to certain state consumer protection laws, and under the Dodd-Frank Act, state attorneys general and other state officials are empowered to enforce certain federal consumer protection laws and regulations. In recent years, state authorities have increased their focus on and enforcement of consumer protection rules. These federal and state consumer protection laws apply to a broad range of Comerica’s activities and to various aspects of its business and include laws relating to interest rates, fair lending, disclosures of credit terms and estimated transaction costs to consumer borrowers, debt collection practices, the use of and the provision of information to consumer reporting agencies, and the prohibition of unfair,
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deceptive or abusive acts or practices in connection with the offer, sale or provision of consumer financial products and services.
The CFPB has issued final rules changing the reporting requirements for lenders under the Home Mortgage Disclosure Act. The new rules expand the range of transactions subject to these requirements to include most securitized residential mortgage loans and credit lines. The rules also increase the overall amount of data required to be collected and submitted, including additional data points about the applicable loans and expanded data about the borrowers. Comerica began collecting the expanded data on January 1, 2018.
Flood Insurance Rules
Comerica continues to monitor the development and implementation of the private flood insurance requirements. To date, the joint agencies have yet to issue a final rule with respect to this remaining requirement. All other flood insurance requirements subject to the Final Rule - Loans in Areas Having Special Flood Hazards, including the escrow of premium and fees for certain real estate loans, are now effective and have been implemented by Comerica.
UNDERWRITING APPROACH
The loan portfolio is a primary source of profitability and risk, so proper loan underwriting is critical to Comerica's long-term financial success. Comerica extends credit to businesses, individuals and public entities based on sound lending principles and consistent with prudent banking practice. During the loan underwriting process, a qualitative and quantitative analysis of potential credit facilities is performed, and the credit risks associated with each relationship are evaluated. Important factors considered as part of the underwriting process for new loans and loan renewals include:
People: Including the competence, integrity and succession planning of customers.
Purpose: The legal, logical and productive purposes of the credit facility.
Payment: Including the source, timing and probability of payment.
Protection: Including obtaining alternative sources of repayment, securing the loan, as appropriate, with collateral and/or third-party guarantees and ensuring appropriate legal documentation is obtained.
Perspective: The risk/reward relationship and pricing elements (cost of funds; servicing costs; time value of money; credit risk).
Comerica prices credit facilities to reflect risk, the related costs and the expected return, while maintaining competitiveness with other financial institutions. Loans with variable and fixed rates are underwritten to achieve expected risk-adjusted returns on the credit facilities and for the full relationship including the borrower's ability to repay the principal and interest based on such rates.
Credit Approval and Monitoring    
Approval of new loan exposure and oversight and monitoring of Comerica's loan portfolio is the joint responsibility of the Credit Risk Management and Decisioning department and the Credit Underwriting department (collectively referred to as “Credit”), plus the business units (“Line’Line”). Credit assists the Line with underwriting by providing objective financial analysis, including an assessment of the borrower's business model, balance sheet, cash flow and collateral. The approval of new loan exposure is the joint responsibility of Credit Risk Management and Decisioning and the Line. Each commercial borrower relationship is assigned an internal risk rating by Credit Risk Management and Decisioning. Further, Credit updates the assigned internal risk rating as new information becomes available as a result of periodic reviews of credit quality, a change in borrower performance or approval of new loan exposure. The goal of the internal risk rating framework is to support Comerica's risk management capability, including its ability to identify and manage changes in the credit risk profile of its portfolio, predict future

losses and price the loans appropriately for risk. Finally, the Line and Credit (including its Portfolio Risk Analytics department) work together to insure the overall credit risk within the loan portfolio is consistent with the bank’s Credit Risk Appetite.
Credit Policy
Comerica maintains a comprehensive set of credit policies. Comerica's credit policies provide individual relationship managers, as well asLine and Credit Personnel with a framework of sound underwriting practices and potential loan committees,structures. These credit policies also provide the framework for loan committee approval authorities based on its internal risk-rating system and establish maximum exposure limits based on risk ratings and Comerica's legal lending limit. Credit, in conjunction with the Line, monitors compliance with the credit policies and modifies the existing policies as necessary. New or modified policies/guidelines require approval by the Strategic Credit Committee, chaired by Comerica's Chief Credit Officer and comprised of senior credit, market and risk management executives.
Commercial Loan Portfolio
Commercial loans are underwritten using a comprehensive analysis of the borrower's operations. The underwriting process includes an analysis of some or all of the factors listed below:
The borrower's business model.model and industry characteristics.
Periodic review of financial statements including financial statements audited by an independent certified public accountant when appropriate.
The proforma financial condition including financial projections.
The borrower's sources and uses of funds.
The borrower's debt service capacity.
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The guarantor's financial strength.
A comprehensive review of the quality and value of collateral, including independent third-party appraisals of machinery and equipment and commercial real estate, as appropriate, to determine the advance rates.
Physical inspection of collateral and audits of receivables, as appropriate.
For additional information specific to certain businesses within our Energy loancommercial portfolio, please see the caption “Energy Lending”“Concentrations of Credit Risk" starting on page F-28F-23 of the Financial Section of this report.
Commercial Real Estate (CRE) Loan Portfolio
Comerica's CRE loan portfolio consists of real estate construction and commercial mortgage loans and includes loans to real estate developers and investors and loans secured by owner-occupied real estate. Comerica's CRE loan underwriting policies are consistent with the approach described above and provide maximum loan-to-value ratios that limit the size of a loan to a maximum percentage of the value of the real estate collateral securing the loan. The loan-to-value percentage varies by the type of collateral and is limited by advance rates established by our regulators. Our loan-to-value limitations are, in certain cases, more restrictive than those required by regulators and are influenced by other risk factors such as the financial strength of the borrower or guarantor, the equity provided to the project and the viability of the project itself. CRE loans generally require cash equity. CRE loans are normally originated with full recourse or limited recourse to all principals and owners. There are limitations to the size of a single project loan and to the aggregate dollar exposure to a single guarantor. For additional information specific to our CRE loan portfolio, please see the caption “Commercial Real Estate Lending” on page F-23 of the Financial Section of this report.
Consumer and Residential Mortgage Loan Portfolios
Comerica's consumer and residential mortgage loan underwriting includes an assessment of each borrower's personal financial condition, including a review of credit reports and related FICO scores (a type of credit score used to assess an applicant's credit risk) and verification of income and assets, as applicable. After origination, internal risk ratings are assigned based on payment status and product type.
Comerica does not originate subprime loans. Although a standard industry definition for subprime loans (including subprime mortgage loans) does not exist, Comerica defines subprime loans as specific product offerings for higher risk borrowers, including individuals with one or a combination of high credit risk factors. These credit factors include low FICO scores, poor patterns of payment history, high debt-to-income ratios and elevated loan-to-value. Comerica generally considers subprime FICO scores to be those below 620 on a secured basis (excluding loans with cash or near-cash collateral and adequate income to make payments) and below 660 for unsecured loans. Residential mortgage loans retained in the portfolio are largely relationship based. The remaining loans are typically eligible to be sold on the secondary market. Adjustable-rate loans are limited to standard conventional loan programs. For additional information specific to our residential real estate loan portfolio, please see the caption “Residential Real Estate Lending” on pages F-24 through F-25 of the Financial Section of this report.
EMPLOYEESHUMAN CAPITAL RESOURCES
Comerica’s relationship banking strategy relies heavily on the personal relationships and the quality of service provided by employees. Accordingly, Comerica aims to attract, develop and retain employees who can drive financial and strategic growth objectives and build long-term shareholder value. Key items related to Comerica’s human capital resources are described below.
Structure. As of December 31, 2018,2021, Comerica and its subsidiaries had 7,5737,223 full-time and 478388 part-time employees.employees, primarily located in Comerica’s core markets of Michigan, Texas, California, Arizona and Florida. Comerica’s Chief Human Resources Officer reports directly to the Chairman, President and CEO and manages all aspects of the employee experience, including talent acquisition, diversity and inclusion, learning and development, talent management, compensation and benefits.

The Governance, Compensation and Nominating Committee of the Board is tasked with reviewing Comerica’s human capital management strategy and talent development program, including recruitment, evaluations and development activities. This Committee also reviews the Corporation’s employee diversity, equity and inclusion initiatives, as well as the results of those initiatives. The Chief Diversity Officer provides annual updates to the full Board, focusing on strategic framework, progress made in corporate governance, workforce diversity, education and social impact over the past year, and the diversity and inclusion action plan for the upcoming year. To enhance the Board’s understanding of Comerica's talent pipeline, the Board routinely meets with high-potential employees in formal and informal settings.
Productivity. Comerica carefully manages the size of its workforce and reallocates resources, as needed. As of December 31, 2021, Comerica’s total employee headcount, on a full-time equivalent basis, was 16 percent lower than as of December 31, 2015. Additionally, for 2021, Comerica managed an average of $17 million of loans and deposits per employee.
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Diversity. Comerica has an organization-wide focus to improve recruitment and retention of women and ethnic minorities especially in leadership positions through its diversity outreach, diversity awareness and learning program and leadership development programs. As of December 31, 2021, Comerica’s U.S. colleagues had the following attributes:
Female (%)Minority (%)
Employees6541
Officials and Managers(1)
5229
Executive Officers(2)
43 21 
(1) Based on EEO-1 job classifications.
(2) Using Securities and Exchange Commission definition.
Comerica was recognized in 2021 as a 2021 Best Employer for Women by Forbes and one of LATINA Style's Top 50 Best Company for Latinas to Work in the U.S., as well as receiving five stars – the highest marking – in the category of governance as part of the 2021 Hispanic Association on Corporate Responsibility Corporate Inclusion Index. Additionally, Comerica received a perfect score of 100% on the Human Rights Campaign's Corporate Equality Index (for LGBTQ equality).
Additionally, Comerica has Employee Resource Groups (ERGs), consisting of employees with common interests organized to promote professional development, social networking, awareness and inclusion, social impact and talent attraction and retention. The ERGs help support and sustain Comerica's diversity and inclusion model. In 2021, Comerica launched its tenth ERG, the national Asian & Pacific Islander Employee Resource Group.
Compensation and Benefits. Comerica strives to provide pay, benefits, and services that help meet the varying needs of its employees. Compensation and benefits include market-competitive pay, retirement programs, broad-based bonuses, an employee stock purchase plan, health and welfare benefits, an employee assistance program, financial counseling, paid time off, family leave and flexible work schedules. In 2021, Comerica increased its minimum wage to $17 per hour, from $16.50. Comerica periodically reviews compensation and benefits by grade level and position to ensure similar positions are paid comparatively and to ensure that Comerica has a competitive and valuable offering to meet the well-being and needs of its employees.
Attraction, Development and Retention. Comerica measures the success of its talent acquisition strategy on speed and quality of acquisition, diversity of applicant pool, and new colleagues' retention and overall performance metrics. Each of these metrics is tracked for each of the key business lines. Sourcing strategies and support structures are modified to ensure that performance targets are met consistently.
Comerica has also created internal programs to support the development and retention of its colleagues, including Comerica University, internal Leadership Development and Emerging Leaders programs designed to train high potential employees, Com-Tech college courses to help re-skill Technology colleagues, a Managing Essentials Certificate series for managers, and organizational change management learning for all colleagues. In 2021, over 7,600 skills-based courses were offered to Comerica colleagues and an average of 28 hours of training per employee were completed. Comerica also supports its employees’ involvement in external development programs and volunteerism. Beginning in 2022, all full-time colleagues will be granted up to 8 hours of PTO annually and all part-time colleagues will be granted up to 4 hours of PTO annually to use for volunteer events. This includes volunteer opportunities related and unrelated to Comerica.
Comerica’s investment in its employees has resulted in a long-tenured workforce, with average tenure of more than 12 years of service. Of the approximately 2,200 open employee positions filled in 2021, 54% were filled by external hires and 46% positions were filled by internal hires. Employee turnover for 2021 was 19%. In 2021, Comerica conducted its second enterprise-wide employee engagement survey, with approximately 80% of colleagues participating.
AVAILABLE INFORMATION
Comerica maintains an Internet website at www.comerica.com where the Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and all amendments to those reports are available without charge, as soon as reasonably practicable after those reports are filed with or furnished to the SEC. The Code of Business Conduct and Ethics for Employees, the Code of Business Conduct and Ethics for Members of the Board of Directors and the Senior Financial Officer Code of Ethics adopted by Comerica are also available on the Internet website and are available in print to any shareholder who requests them. Such requests should be made in writing to the Corporate Secretary at Comerica Incorporated, Comerica Bank Tower, 1717 Main Street, MC 6404, Dallas, Texas 75201.
In addition, pursuant to regulations adopted by the FRB, Comerica makes additional regulatory capital-related disclosures. Under these regulations, Comerica satisfies a portion of these requirements through postings on its website, and Comerica has done so and expects to continue to do so without also providing disclosure of this information through filings with the SEC.
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Where we have included web addresses in this report, such as our web address and the web address of the SEC, we have included those web addresses as inactive textual references only. Except as specifically incorporated by reference into this report, information on those websites is not part hereof.

Item 1A. Risk Factors.
This report includes forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. In addition, Comerica may make other written and oral communications from time to time that contain such statements. All statements regarding Comerica's expected financial position, strategies and growth prospects and general economic conditions Comerica expects to exist in the future are forward-looking statements. The words, “anticipates,” “believes,” “contemplates,” “feels,” “expects,” “estimates,” “seeks,” “strives,” “plans,” “intends,” “outlook,” “forecast,” “position,” “target,” “mission,” “assume,” “achievable,” “potential,” “strategy,” “goal,” “aspiration,” “opportunity,” “initiative,” “outcome,” “continue,” “remain,” “maintain,” “on track,” “trend,” “objective,” “looks forward,” “projects,” “models” and variations of such words and similar expressions, or future or conditional verbs such as “will,” “would,” “should,” “could,” “might,” “can,” “may” or similar expressions, as they relate to Comerica or its management, are intended to identify forward-looking statements.
Comerica cautions that forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date the statement is made, and Comerica does not undertake to update forward-looking statements to reflect facts, circumstances, assumptions or events that occur after the date the forward-looking statements are made. Actual results could differ materially from those anticipated in forward-looking statements and future results could differ materially from historical performance.
In addition to factors mentioned elsewhere in this report or previously disclosed in Comerica's SEC reports (accessible on the SEC's website at www.sec.gov or on Comerica's website at www.comerica.com), the factors contained below, among others, could cause actual results to differ materially from forward-looking statements, and future results could differ materially from historical performance.
General political, economic orCREDIT RISK
Unfavorable developments concerning credit quality could adversely affect Comerica's financial results.
Although Comerica regularly reviews credit exposure related to its customers and various industry conditions, either domestically or internationally, may be less favorable than expected.
Local, domestic, and international events including economic, financial market, political and industry specific conditions affect the financial services industry, directly and indirectly. The economic environment and market conditionssectors in which it has business relationships, default risk may arise from events or circumstances that are difficult to detect or foresee. Under such circumstances, as occurred during the COVID-19 pandemic, Comerica operates continue to be uncertain. Financial market volatility increased through the fourth quarter of 2018. Also, economic growthcould experience an increase in the restlevel of provision for credit losses, nonperforming assets, net charge-offs and reserve for credit losses, which could adversely affect Comerica's financial results.
Declines in the businesses or industries of Comerica's customers could cause increased credit losses or decreased loan balances, which could adversely affect Comerica.
Comerica's business customer base consists, in part, of customers in volatile businesses and industries such as the automotive, commercial real estate, residential real estate and energy industries. These industries are sensitive to global economic conditions, supply chain factors and/or commodities prices. In particular, in 2021, decreased balances in Dealer Services occurred due to an imbalance in supply and demand impacted by a shortage in microchips used in automotive production. Additionally, as companies implement policies to extend work-from-home arrangements, the commercial real estate industry has been under more scrutiny. Finally, while energy prices recovered in 2021, they are unlikely to remain stable, and energy companies are expected to experience environmental pressure over the long-term. Any decline in one of these businesses or industries could cause increased credit losses, which in turn could adversely affect Comerica. Further, any decline in these businesses or industries could cause decreased borrowings, either due to reduced demand or reductions in the borrowing base available for each customer loan. For more information regarding certain of Comerica's lines of business, please see "Concentrations of Credit Risk," "Commercial Real Estate Lending," "Automotive Lending - Dealer," "Automotive Lending - Production," "Residential Real Estate Lending,"and “Energy Lending” on pages F-23 through F-25 of the world appearsFinancial Section of this report.
Additionally, certain industries have been particularly susceptible to be slowing, notablythe effects of the pandemic, such as retail commercial real estate, retail goods and services, hotels, arts/recreation, airlines, restaurants and bars, childcare, coffee shops, cruise lines, education, gasoline and convenience stores, religious organizations, senior living, freight and travel arrangements, and Comerica has outstanding loans to clients in Chinathese industries, as described below under "Other Sectors Most at Risk due to Economic Stress Resulting from COVID-19 Impacts" on page F-26 of the Financial Section of this report.
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Changes in customer behavior due to outside factors may adversely impact Comerica's business, financial condition and in Europe. Changes to U.S. trade policy and reactions to changes by U.S. trading partners have also increased stress on many U.S. businesses. Most U.S.results of operations.
Individual, economic, indicators continue to be positive. However, some have shown signs of weakness through the end of 2018. This includes residential investment, which has cooled as mortgage rates have increased. Conditions related to inflation, recession, unemployment, volatile interest rates, international conflicts, changes in trade policiespolitical, industry-specific conditions and other factors outside of Comerica's control, such as pandemics, inflation, fuel prices, energy costs, tariffs, real estate values energy prices, stateor other factors that affect customer income levels, could alter predicted customer borrowing, repayment, investment and local municipal budget deficits, government spending and the U.S. national debt, outside of our control may, directly and indirectly,deposit practices. Such a change in these practices could materially adversely affect Comerica.Comerica's ability to anticipate business needs and meet regulatory requirements.
Further, difficult economic conditions may negatively affect consumer confidence levels. A decrease in consumer confidence levels would likely aggravate the adverse effects of these difficult market conditions on Comerica, Comerica's customers and others in the financial institutions industry.
MARKET RISK
Governmental monetary and fiscal policies may adversely affect the financial services industry, and therefore impact Comerica's financial condition and results of operations.
Monetary and fiscal policies of various governmental and regulatory agencies, in particular the FRB, affect the financial services industry, directly and indirectly. The FRB regulates the supply of money and credit in the U.S., and its monetary and fiscal policies determine in a large part Comerica's cost of funds for lending and investing and the return that can be earned on such loans and investments. Changes in such policies, including changes in interest rates such as recent increases in the federal funds rate, or changes in the FRB's balance sheet, such as the FRB's continuing balance sheet reduction, will influence the origination of loans, the value of investments, the generation of deposits and the rates received

on loans and investment securities and paid on deposits. Changes in monetary and fiscal policies are beyond Comerica's control and difficult to predict. Comerica's financial condition and results of operations could be materially adversely impacted by changes in governmental monetary and fiscal policies.
Comerica’s operational or security systems or infrastructure, or those of third parties,Fluctuations in interest rates and their impact on deposit pricing could fail or be breached, which could disrupt Comerica’s businessadversely affect Comerica's net interest income and adversely impact Comerica’s results of operations, liquidity and financial condition, as well as cause legal or reputational harm.balance sheet.
The potential for operational risk exposure exists throughout Comerica’s businessoperations of financial institutions such as Comerica are dependent to a large degree on net interest income, which is the difference between interest income from loans and as a resultinvestments and interest expense on deposits and borrowings. Prevailing economic conditions and the trade, fiscal and monetary policies of the federal government and various regulatory agencies all affect market rates of interest and the availability and cost of credit, which in turn significantly affect financial institutions' net interest income and the market value of its interactions with,investment securities. A continued low interest rate environment will adversely affect the interest income Comerica earns on loans and relianceinvestments. For a discussion of Comerica's interest rate sensitivity, please see “Market and Liquidity Risk” beginning on third parties, is not limitedpage F-27 of the Financial Section of this report.
Deposits make up a large portion of Comerica’s funding portfolio. Comerica's funding costs may increase if it raises deposit rates to Comerica’s own internal operational functions. Comerica's operationsavoid losing customer deposits, or if it loses customer deposits and must rely on more expensive sources of funding. Higher funding costs will reduce Comerica's net interest margin and net interest income.
Volatility in interest rates can also result in disintermediation, which is the secure processing, storageflow of funds away from financial institutions into direct investments, such as federal government and transmission of confidentialcorporate securities and other informationinvestment vehicles, which, because of the absence of federal insurance premiums and reserve requirements, generally pay higher rates of return than financial institutions. Comerica's financial results could be materially adversely impacted by changes in financial market conditions.
Interest rates on its technology systems and networks. These networks areComerica's outstanding financial instruments might be subject to infrastructure failures, ongoing system maintenance and upgrades and planned network outages. The increased use of mobile and cloud technologies can heighten these and other operational risks. Any failure, interruption or breach in security of these systems could result in failures or disruptions in Comerica's customer relationship management, general ledger, deposit, loan and other systems.
Comerica relieschange based on its employees and third parties in its day-to-day and ongoing operations, who may, as a result of human error, misconduct, malfeasance or failure, or breach of Comerica’s or of third-party systems or infrastructure, expose Comerica to risk. For example, Comerica’s ability to conduct business may be adversely affected by any significant disruptions to Comerica or to third parties with whom Comerica interacts or upon whom it relies. Although Comerica has programs in placedevelopments related to business continuity, disaster recovery and information security to maintain the confidentiality, integrity and availability of its systems, business applications and customer information, such disruptions may still give rise to interruptions in service to customers and loss or liability to Comerica, including loss of customer data. In addition, Comerica’s ability to implement backup systems and other safeguards with respect to third-party systems is more limited than with respect to its own systems.
Comerica’s financial, accounting, data processing, backup or other operating or security systems and infrastructure may fail to operate properly or become disabled or damaged as a result of a number of factors, including events that are wholly or partially beyond its control,LIBOR, which could adversely affect its revenue, expenses, and the value of those financial instruments.
On July 27, 2017, the United Kingdom’s Financial Conduct Authority ("FCA"), which regulates LIBOR, publicly announced that it intended to stop persuading or compelling banks to submit LIBOR rates after 2021. Certain LIBOR tenors are no longer supported as of December 31, 2021, and the FCA has announced that the remaining tenors, including those most commonly used by Comerica, will cease to be supported after June 30, 2023. While Comerica stopped originating LIBOR-based products in the fourth quarter of 2021, it still has substantial exposure to outstanding LIBOR-based products, including loans and derivatives. Approximately 71 percent of Comerica's loans at December 31, 2021 were tied to LIBOR, which excludes the impact of interest rate swaps converting floating-rate loans to fixed. 
Comerica is currently issuing new Secured Overnight Financing Rate (SOFR)-based and Bloomberg Short-Term Bank Yield Index (BSBY)-based cash and derivative products. Comerica continues to monitor market developments and regulatory updates, as well as collaborate with regulators and industry groups on the transition.
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The market transition away from LIBOR to an alternative reference rate is complex and could have a range of adverse effects on our business, financial condition and results of operations. In particular, such transition could:
adversely affect the interest rates paid or received on, and the revenues and expenses associated with, Comerica’s floating rate obligations, loans, deposits, derivatives, and other financial instruments tied to LIBOR rates, or other securities or financial arrangements given LIBOR’s historical role in determining market interest rates globally;
adversely affect the value of Comerica’s floating rate obligations, loans, deposits, derivatives, and other financial instruments tied to LIBOR rates, or other securities or financial arrangements given LIBOR’s historical role in determining market interest rates globally;
prompt inquiries or other actions from regulators in respect to Comerica’s selection of alternative reference rates other than SOFR; and
result in disputes, litigation or other actions with counterparties regarding the interpretation and enforceability of certain fallback language in LIBOR-based instruments.
More information regarding the LIBOR transition is available on page F-30 under "LIBOR Transition."
The manner and impact of this transition, as well as the effect of these developments on Comerica’s funding costs, loan and investment and trading securities portfolios, asset-liability management, and business, is uncertain.
LIQUIDITY RISK
Comerica must maintain adequate sources of funding and liquidity to meet regulatory expectations, support its operations and fund outstanding liabilities.
Comerica’s liquidity and ability to process transactions or provide services. Such events may include sudden increases in customer transaction volume and/fund and run its business could be materially adversely affected by a variety of conditions and factors, including financial and credit market disruptions and volatility, a lack of market or customer activity; electrical, telecommunicationsconfidence in financial markets in general, or other major physical infrastructure outages; natural disasters such as earthquakes, tornadoes, hurricanes and floods; disease pandemics; cyber attacks; and events arising from local or larger scale political or social matters, including wars and terrorist acts.
The occurrence of any failure or interruption in Comerica's operations or information systems, or any security breach, could cause reputational damage, jeopardize the confidentiality of customer information,deposit competition based on interest rates, which may result in a loss of customer business, subjectdeposits or outflows of cash or collateral and/or adversely affect Comerica's ability to access capital markets on favorable terms.
Other conditions and factors that could materially adversely affect Comerica’s liquidity and funding include a lack of market or customer confidence in, or negative news about, Comerica or the financial services industry generally which also may result in a loss of deposits and/or negatively affect Comerica's ability to access the capital markets; the loss of customer deposits to alternative investments; counterparty availability; interest rate fluctuations; general economic conditions; and the legal, regulatory, interventionaccounting and tax environments governing Comerica's funding transactions. Many of the above conditions and factors may be caused by events over which Comerica has little or expose it to civil litigationno control. There can be no assurance that significant disruption and volatility in the financial loss or liability, any ofmarkets will not occur in the future. Further, Comerica's customers may be adversely impacted by such conditions, which could have a material adverse effectnegative impact on Comerica.Comerica's business, financial condition and results of operations.
Additionally, if Comerica reliesis unable to continue to fund assets through customer bank deposits or access funding sources on other companiesfavorable terms, or if Comerica suffers an increase in borrowing costs or otherwise fails to provide certain key componentsmanage liquidity effectively, Comerica’s liquidity, operating margins, financial condition and results of its delivery systems, and certain failures couldoperations may be materially adversely affect operations.affected.
Comerica faces the risk of operational disruption, failure or capacity constraints due to its dependency on third party vendors for components of its delivery systems. Third party vendors provide certain key components of Comerica's delivery systems, such as cloud-based computing, networking and storage services, payment processing services, recording and monitoring services, internet connections and network access, clearing agency services and card processing services, and additionally will be providing trust processing services startingReduction in 2019. While Comerica conducts due diligence prior to engaging with third party vendors and performs ongoing monitoring of vendor controls, it does not control their operations. Further, while Comerica's vendor management policies and practices are designed to comply with current regulations, these policies and practices cannot eliminate this risk. In this context, any vendor failure to properly deliver these servicesour credit ratings could adversely affect Comerica’s businessComerica and/or the holders of its securities.
Rating agencies regularly evaluate Comerica, and their ratings are based on a number of factors, including Comerica's financial strength as well as factors not entirely within its control, such as conditions affecting the financial services industry generally. There can be no assurance that Comerica will maintain its current ratings. While recent credit rating actions have had little to no detrimental impact on Comerica's profitability, borrowing costs, or ability to access the capital markets, future downgrades to Comerica's or its subsidiaries' credit ratings could adversely affect Comerica's profitability, borrowing costs, or ability to access the capital markets or otherwise have a negative effect on Comerica's results of operations or financial condition. If such a reduction placed Comerica's or its subsidiaries' credit ratings below investment grade, it could also create obligations or liabilities under the terms of existing arrangements that could increase Comerica's costs under such arrangements. Additionally, a downgrade of the credit rating of any particular security issued by Comerica or its subsidiaries could negatively affect the ability of the holders of that security to sell the securities and the prices at which any such securities may be sold.
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The soundness of other financial institutions could adversely affect Comerica.
Comerica's ability to engage in routine funding transactions could be adversely affected by the actions and commercial soundness of other financial institutions. Financial services institutions are interrelated as a result of trading, clearing, counterparty or other relationships. Comerica has exposure to many different industries and counterparties, and it routinely executes transactions with counterparties in the financial loss, reputational harm, and/industry, including brokers and dealers, commercial banks, investment banks, mutual and hedge funds, and other institutional clients. As a result, defaults by, or regulatory action.even rumors or questions about, one or more financial services institutions, or the financial services industry generally, have led, and may further lead, to market-wide liquidity problems and could lead to losses or defaults by us or by other institutions. Many of these transactions could expose Comerica to credit risk in the event of default of its counterparty or client. In addition, Comerica's credit risk may be impacted when the collateral held by it cannot be monetized or is liquidated at prices not sufficient to recover the full amount of the financial instrument exposure due to Comerica. There is no assurance that any such losses would not adversely affect, possibly materially, Comerica.
TECHNOLOGY RISK
Comerica faces security risks, including denial of service attacks, hacking, social engineering attacks targeting Comerica’s colleagues and customers, malware intrusion or data corruption attempts, and identity theft that could result in the disclosure of confidential information, adversely affect its business or reputation, and create significant legal and financial exposure.
Comerica’s computer systems and network infrastructure and those of third parties, on which Comerica is highly dependent, are subject to security risks and could be susceptible to cyber attacks, such as denial of service attacks, hacking, terrorist activities or identity theft. Comerica’s business relies on the secure processing, transmission, storage and retrieval of confidential, proprietary and other information in its computer and data management systems and networks, and in the computer and data management systems and networks of third parties. In addition, to access Comerica’s network,

products and services, its customers and other third parties may use personal mobile devices or computing devices that are outside of its network environment and are subject to their own cybersecurity risks.
Cyber attacks could include computer viruses, malicious or destructive code, phishing attacks, denial of service or information, ransomware, improper access by employees or vendors, attacks on personal email of employees, ransom demands to not expose security vulnerabilities in Comerica's systems or the systems of third parties, or other security breaches, and could result in the destruction or exfiltration of data and systems. As cyber threats continue to evolve, Comerica may be required to expend significant additional resources to continue to modify or enhance its protective measures or to investigate and remediate any information security vulnerabilities or incidents. Despite efforts to ensure the integrity of Comerica’s systems and implement controls, processes, policies and other protective measures, Comerica may not be able to anticipate all security breaches, nor may it be able to implement guaranteed preventive measures against such security breaches. Cyber threats are rapidly evolving and Comerica may not be able to anticipate or prevent all such attacks and could be held liable for any security breach or loss.
Although Comerica has programs in place related to business continuity, disaster recovery and information security to maintain the confidentiality, integrity, and availability of its systems, business applications and customer information, such disruptions may still give rise to interruptions in service to customers and loss or liability to Comerica, including loss of customer data. Like other financial services firms, Comerica and its third party providers continue to be the subject of cyber attacks. Although to this date Comerica has not experienced any material losses or other material consequences related to cyber attacks, future cyber attacks could be more disruptive and damaging, and Comerica may not be able to anticipate or prevent all such attacks. Further, cyber attacks may not be detected in a timely manner.
Cyber attacks or other information or security breaches, whether directed at Comerica or third parties, may result in a material loss or have material consequences. Furthermore, the public perception that a cyber attack on Comerica’s systems has been successful, whether or not this perception is correct, may damage its reputation with customers and third parties with whom it does business. Hacking of personal information and identity theft risks, in particular, could cause serious reputational harm. A successful penetration or circumvention of system security could cause Comerica serious negative consequences, including loss of customers and business opportunities, costs associated with maintaining business relationships after an attack or breach; significant business disruption to Comerica’s operations and business, misappropriation, exposure, or destruction of its confidential information, intellectual property, funds, and/or those of its customers; or damage to Comerica’s or Comerica’s customers’ and/or third parties’ computers or systems, and could result in a violation of applicable privacy laws and other laws, litigation exposure, regulatory fines, penalties or intervention, loss of confidence in Comerica’s security measures, reputational damage, reimbursement or other compensatory costs, additional compliance costs, and could adversely impact its results of operations, liquidity and financial condition. In addition, although Comerica maintains insurance coverage that may cover certain cyber
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losses (subject to policy terms and conditions), we may not have adequate insurance coverage to compensate for losses from a cybersecurity event.
Proposed revenue enhancements and efficiency improvements may not be achieved.
In July 2016, Comerica announced its efficiency and revenue program, GEAR Up (the "program") and initial financial targets. Several initiatives continue to be implemented within the program. There may be changes in the scope or assumptions underlying the program, delays in the anticipated timing of activities related to the program and higher than expected or unanticipated costs to implement them, and some benefits may not be fully achieved. As well, even if the program is successful, many factors can influence the amount of core noninterest expenses, some of which are not wholly in our control, including changing regulations, benefits and health care costs, technology and cybersecurity investments, outside processing expenses and litigation.
Furthermore, the implementation of the program may have unintended impacts on Comerica's ability to attract and retain business, customers and employees, and could result in disruptions to systems, processes, controls and procedures. Any revenue enhancement ideas may not be successful in the marketplace. Accordingly, Comerica's results of operations and profitability may be negatively impacted, making it less competitive and potentially causing a loss of market share. Additionally, Comerica's future performance is subject to the various risks inherent to its business and operations.
Comerica must maintain adequate sources of funding and liquidity to meet regulatory expectations, support its operations and fund outstanding liabilities.
Comerica’s liquidity and ability to fund and run its business could be materially adversely affected by a variety of conditions and factors, including financial and credit market disruptions and volatility, a lack of market or customer confidence in financial markets in general, or deposit competition as interest rates increase, which may result in a loss of customer deposits or outflows of cash or collateral and/or adversely affect Comerica's ability to access capital markets on favorable terms.

Other conditions and factors that could materially adversely affect Comerica’s liquidity and funding include a lack of market or customer confidence in, or negative news about, Comerica or the financial services industry generally which also may result in a loss of deposits and/or negatively affect Comerica's ability to access the capital markets; the loss of customer deposits to alternative investments; counterparty availability; interest rate fluctuations; general economic conditions; and the legal, regulatory, accounting and tax environments governing Comerica's funding transactions. Many of the above conditions and factors may be caused by events over which Comerica has little or no control. There can be no assurance that significant disruption and volatility in the financial markets will not occur in the future. Further, Comerica's customers may be adversely impacted by such conditions, which could have a negative impact on Comerica's business, financial condition and results of operations.
Further, if Comerica is unable to continue to fund assets through customer bank deposits or access funding sources on favorable terms, or if Comerica suffers an increase in borrowing costs or otherwise fails to manage liquidity effectively, Comerica’s liquidity, operating margins, financial condition and results of operations may be materially adversely affected.
Compliance with stringent capital requirements may adversely affect Comerica.
Comerica is required to satisfy stringent regulatory capital standards, as set forth in the “Supervision and Regulation” section of this report. These requirements, and any other new laws or regulations related to capital and liquidity, could adversely affect Comerica's ability to pay dividends or make equity repurchases, or could require Comerica to reduce business levels or to raise capital, including in ways that may adversely affect its results of operations or financial condition and/or existing shareholders. Maintaining higher levels of capital may reduce Comerica's profitability and otherwise adversely affect its business, financial condition, or results of operations.
Declines in the businesses or industries of Comerica's customers could cause increased credit losses or decreased loan balances, which could adversely affect Comerica.
Comerica's business customer base consists, in part, of customers in volatile businesses and industries such as the energy industry, the automotive production industry and the real estate business. These industries are sensitive to global economic conditions, supply chain factors and/or commodities prices. Any decline in one of those customers' businesses or industries could cause increased credit losses, which in turn could adversely affect Comerica. Further, any decline in these businesses or industries could cause decreased borrowings, either due to reduced demand or reductions in the borrowing base available for each customer loan.
For more information regarding certain of Comerica's lines of business, please see "Concentration of Credit Risk," "Commercial Real Estate Lending," "Residential Real Estate Lending" and “Energy Lending” on pages F-26 through F-28 of the Financial Section of this report.
Unfavorable developments concerning credit quality could adversely affect Comerica's financial results.
Although Comerica regularly reviews credit exposure related to its customers and various industry sectors in which it has business relationships, default risk may arise from events or circumstances that are difficult to detect or foresee. Under such circumstances, Comerica could experience an increase in the level of provision for credit losses, nonperforming assets, net charge-offs and reserve for credit losses, which could adversely affect Comerica's financial results.
Changes in regulation or oversight may have a material adverse impact on Comerica's operations.
Comerica is subject to extensive regulation, supervision and examination by the U.S. Treasury, the Texas Department of Banking, the FDIC, the FRB, the OCC, the SEC, FINRA, DOL, MSRB and other regulatory bodies. Such regulation and supervision governs and limits the activities in which Comerica may engage. Regulatory authorities have extensive discretion in their supervisory and enforcement activities, including the imposition of restrictions on Comerica's operations and ability to make acquisitions, investigations and limitations related to Comerica's securities, the classification of Comerica's assets and determination of the level of Comerica's allowance for loan losses. Any change in such regulation and oversight, whether in the form of regulatory policy, regulations, legislation or supervisory action, may have a material adverse impact on Comerica's business, financial condition or results of operations. The impact of any future legislation or regulatory actions may adversely affect Comerica's businesses or operations.
Cybersecurity and data privacy are areas of heightened legislative and regulatory focus.
As cybersecurity and data privacy risks for banking organizations and the broader financial system have significantly increased in recent years, cybersecurity and data privacy issues have become the subject of increasing legislative and regulatory focus. The federal bank regulatory agencies have proposed enhanced cyber risk management standards, which would apply to a wide range of large financial institutions and their third-party service providers, including Comerica and its bank subsidiaries, and would focus on cyber risk governance and management, management of internal and external dependencies, and incident response, cyber resilience and situational awareness. Several states have also proposed or adopted cybersecurity legislation and regulations, which require, among other things, notification to affected individuals

when there has been a security breach of their personal data. For more information regarding cybersecurity regulation, refer to the “Supervision and Regulation” section of this report.
Comerica receives, maintains and stores non-public personal information of Comerica’s customers and counterparties, including, but not limited to, personally identifiable information and personal financial information. The sharing, use, disclosure and protection of this information are governed by federal and state law. Both personally identifiable information and personal financial information is increasingly subject to legislation and regulation, the intent of which is to protect the privacy of personal information that is collected and handled. For example, in June of 2018, the Governor of California signed into law the CCPA. The CCPA, which becomesbecame effective on January 1, 2020, applies to for-profit businesses that conduct business in California and meet certain revenue or data collection thresholds, including Comerica. For more information regarding data privacy regulation, refer to the “Supervision and Regulation” section of this report.
Comerica may become subject to new legislation or regulation concerning cybersecurity or the privacy of personally identifiable information and personal financial information or of any other information Comerica may store or maintain. Comerica could be adversely affected if new legislation or regulations are adopted or if existing legislation or regulations are modified such that Comerica is required to alter its systems or require changes to its business practices or privacy policies. If cybersecurity, data privacy, data protection, data transfer or data retention laws are implemented, interpreted or applied in a manner inconsistent with Comerica’s current practices, it may be subject to fines, litigation or regulatory enforcement actions or ordered to change its business practices, policies or systems in a manner that adversely impacts Comerica’s operating results.
Fluctuations in interest ratesOPERATIONAL RISK
Comerica’s operational or security systems or infrastructure, or those of third parties, could fail or be breached, which could disrupt Comerica’s business and theiradversely impact on deposit pricing could adversely affect Comerica's net interest incomeComerica’s results of operations, liquidity and balance sheet.financial condition, as well as cause legal or reputational harm.
The operations of financial institutions suchpotential for operational risk exposure exists throughout Comerica’s business and, as Comerica are dependent to a large degree on net interest income, which is the difference between interest income from loans and investments and interest expense on deposits and borrowings. Prevailing economic conditions and the trade, fiscal and monetary policies of the federal government and various regulatory agencies all affect market rates of interest and the availability and cost of credit, which in turn significantly affect financial institutions' net interest income and the market valueresult of its investment securities. For a discussion ofinteractions with, and reliance on, third parties, is not limited to Comerica’s own internal operational functions. Comerica's interest rate sensitivity, please see, “Market and Liquidity Risk” beginning on page F-29 of the Financial Section of this report.
While recent interest rate rises have benefited Comerica's net interest income, higher interest rates can also lead to fewer loan originations, lower returns on investment securities and increased competition for deposits. In particular, Comerica's funding costs may continue to increase if it raises deposit rates to avoid losing customer deposits, or if it loses customer deposits and mustoperations rely on more expensive sourcesthe secure processing, storage and transmission of funding. Higher funding costs will reduceconfidential and other information on its technology systems and networks. These networks are subject to infrastructure failures, ongoing system maintenance and upgrades and planned network outages. Comerica's net interest marginuse of mobile and net interest income.
Volatilitycloud technologies, as well as its hybrid work options permitting remote work, can heighten these and other operational risks. Any failure, interruption or breach in interest rates can alsosecurity of these systems could result in disintermediation, which is the flow of funds away from financial institutions into direct investments, such as federal government and corporate securitiesfailures or disruptions in Comerica's customer relationship management, general ledger, deposit, loan and other investment vehicles, which, becausesystems.
Comerica relies on its employees and third parties in its day-to-day and ongoing operations, who may, as a result of the absencehuman error, misconduct, malfeasance or failure, or breach of federal insurance premiums and reserve requirements, generally pay higher ratesComerica’s or of return than financial institutions. Comerica's financial results couldthird-party systems or infrastructure, expose Comerica to risk. For example, Comerica’s ability to conduct business may be materially adversely impactedaffected by changesany significant disruptions to Comerica or to third parties with whom Comerica interacts or upon whom it relies. Although Comerica has programs in financial market conditions.
Interest rates on Comerica's outstanding financial instruments might be subject to change based on developmentsplace related to LIBOR,business continuity, disaster recovery and information security to maintain the confidentiality, integrity and availability of its systems, business applications and customer information, such disruptions may still give rise to interruptions in service to customers and loss or liability to Comerica, including loss of customer data. In addition, Comerica’s ability to implement backup systems and other safeguards with respect to third-party systems is more limited than with respect to its own systems.
Comerica’s financial, accounting, data processing, backup or other operating or security systems and infrastructure may fail to operate properly or become disabled or damaged as a result of a number of factors, including events that are wholly or partially beyond its control, which could adversely affect its revenue, expenses,ability to process transactions or provide services. Such events may include sudden increases in customer transaction volume and/or customer activity;
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electrical, telecommunications or other major physical infrastructure outages; natural disasters such as earthquakes, tornadoes, hurricanes and floods; disease pandemics; cyber attacks; and events arising from local or larger scale political or social matters, including wars and terrorist acts.
The occurrence of any failure or interruption in Comerica's operations or information systems, or any security breach, could cause reputational damage, jeopardize the valueconfidentiality of thosecustomer information, result in a loss of customer business, subject Comerica to regulatory intervention or expose it to civil litigation and financial instruments.
On July 27, 2017, the United Kingdom’s Financial Conduct Authority,loss or liability, any of which regulates LIBOR, publicly announced that it intends to stop persuading or compelling banks to submit LIBOR rates after 2021. It is expected that a transition away from the widespread use of LIBOR to alternative rates will occur over the course of the next several years. While there is no consensus on what rate or rates may become accepted alternatives to LIBOR, the Alternative Reference Rates Committee, a steering committee comprised of U.S. financial market participants, selected and the Federal Reserve Bank of New York started in May 2018 to publish the Secured Overnight Finance Rate (“SOFR”) as an alternative to LIBOR. SOFR is a broad measure of the cost of borrowing cash in the overnight U.S. treasury repo market. At this time, it is impossible to predict whether the SOFR or another reference rate will become an accepted alternative to LIBOR.
Comerica's loan composition at December 31, 2018 was 62 percent 30-day LIBOR, 13 percent other LIBOR (primarily 60-day), 16 percent prime and 9 percent fixed rate. The market transition away from LIBOR to an alternative reference rate, including SOFR, is complex and could have a rangematerial adverse effect on Comerica.
Comerica relies on other companies to provide certain key components of adverse effects on our business, financial conditionits delivery systems, and results of operations. In particular, any such transition could:
certain failures could materially adversely affect operations.
Comerica faces the interest rates paidrisk of operational disruption, failure or receivedcapacity constraints due to its dependency on third party vendors for components of its delivery systems. Third party vendors provide certain key components of Comerica's delivery systems, such as cloud-based computing, networking and the revenuestorage services, payment processing services, recording and expenses associatemonitoring services, internet connections and network access, clearing agency services, card processing services and trust processing services. While Comerica conducts due diligence prior to engaging with Comerica’s floating rate obligations, loans, deposits, derivatives,third party vendors and other financial instruments tiedperforms ongoing monitoring of vendor controls, it does not control their operations. Further, while Comerica's vendor management policies and practices are designed to LIBOR rates, or other securities or financial arrangements given LIBOR’s role in determining market interest rates globally;

comply with current regulations, these policies and practices cannot eliminate this risk. In this context, any vendor failure to properly deliver these services could adversely affect the value of Comerica’s floating rate obligations, loans, deposits, derivatives,business operations, and other financial instruments tied to LIBOR rates, or other securities or financial arrangements given LIBOR’s role in determining market interest rates globally;
prompt inquiries or other actions from regulators in respect of Comerica’s preparation and readiness for the replacement of LIBOR with an alternative reference rate;
result in disputes, litigation financial loss, reputational harm, and/or other actionsregulatory action.
Legal and regulatory proceedings and related matters with counterparties regardingrespect to the interpretationfinancial services industry, including those directly involving Comerica and enforceability of certain fallback language in LIBOR-based securities; and
require the transition to or development of appropriate systems and analytics to effectively transition Comerica’s risk management processes from LIBOR-based products to those based on the applicable alternative pricing benchmark, such as SOFR.
The manner and impact of this transition, as well as the effect of these developments on Comerica’s funding costs, loan and investment and trading securities portfolios, asset-liability management, and business, is uncertain.
Reduction in our credit ratingsits subsidiaries, could adversely affect Comerica and/or the holders of its securities.
Rating agencies regularly evaluate Comerica, and their ratings are based on a number of factors, including Comerica's financial strength as well as factors not entirely within its control, including conditions affecting the financial services industry generally. Therein general.
Comerica has been, and may in the future be, subject to various legal and regulatory proceedings. It is inherently difficult to assess the outcome of these matters, and there can be no assurance that Comerica will maintain its current ratings. In February 2016, Standard & Poor's downgradedprevail in any proceeding or litigation. Any such matter could result in substantial cost and diversion of Comerica's long-term senior credit ratings one notch to BBB+ and Comerica Bank's long and short-term credit ratings one notch to A- and A-2, respectively. While recent credit rating actionsefforts, which by itself could have had little to no detrimental impacta material adverse effect on Comerica's profitability, borrowingfinancial condition and operating results. Further, adverse determinations in such matters could result in fines or actions by Comerica's regulators that could materially adversely affect Comerica's business, financial condition or results of operations.
Comerica establishes reserves for legal claims when payments associated with the claims become probable and the costs or abilitycan be reasonably estimated. Comerica may still incur legal costs for a matter even if it has not established a reserve. In addition, due to access the capital markets, future downgrades to Comerica's or its subsidiaries' credit ratingsinherent subjectivity of the assessments and unpredictability of the outcome of legal proceedings, the actual cost of resolving a legal claim may be substantially higher than any amounts reserved for that matter. The ultimate resolution of a pending legal proceeding, depending on the remedy sought and granted, could adversely affect Comerica's profitability, borrowing costs,results of operations and financial condition.
Comerica may incur losses due to fraud.
Fraudulent activity can take many forms and has escalated as more tools for accessing financial services emerge, such as real-time payments. Fraud schemes are broad and continuously evolving. Examples include but are not limited to: debit card/credit card fraud, check fraud, mechanical devices attached to ATM machines, social engineering and phishing attacks to obtain personal information, impersonation of our clients through the use of falsified or stolen credentials, employee fraud, information theft and other malfeasance. Increased deployment of technologies, such as chip card technology, defray and reduce aspects of fraud; however, criminals are turning to other sources to steal personally identifiable information in order to impersonate the consumer to commit fraud. Many of these data compromises have been widely reported in the media. Further, as a result of the increased sophistication of fraud activity, Comerica continues to invest in systems, resources, and controls to detect and prevent fraud. This will result in continued ongoing investments in the future.
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Controls and procedures may not prevent or detect all errors or acts of fraud.
Controls and procedures are designed to provide reasonable assurance that information required to be disclosed in reports Comerica files or submits under the Exchange Act is accurately accumulated and communicated to management, and recorded, processed, summarized, and reported within the time periods specified in the SEC's rules and forms. Disclosure controls and procedures or internal controls and procedures, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met, due to certain inherent limitations. These limitations include the realities that judgments in decision making can be faulty, that alternative reasoned judgments can be drawn, that breakdowns can occur because of an error or mistake, or that controls may be fraudulently circumvented. Accordingly, because of the inherent limitations in control systems, misstatements due to error or fraud may occur and not be detected.
COMPLIANCE RISK
Changes in regulation or oversight, or changes in Comerica’s status with respect to existing regulations or oversight, may have a material adverse impact on Comerica's operations.
Comerica is subject to extensive regulation, supervision and examination by the U.S. Treasury, the Texas Department of Banking, the FDIC, the FRB, the OCC, the CFPB, the CFTC, the SEC, FINRA, DOL, MSRB and other regulatory bodies. Such regulation and supervision governs and limits the activities in which Comerica may engage. Regulatory authorities have extensive discretion in their supervisory and enforcement activities, including the imposition of restrictions on Comerica's operations and ability to accessmake acquisitions, investigations and limitations related to Comerica's securities, the capital marketsclassification of Comerica's assets and determination of the level of Comerica's allowance for loan losses. Any change in such regulation and oversight, whether in the form of regulatory policy, regulations, legislation or otherwisesupervisory action, may have a negative effectmaterial adverse impact on Comerica's business, financial condition or results of operations. The impact of any future legislation or regulatory actions may adversely affect Comerica's businesses or operations.
Further, even if such regulations or oversight do not change, Comerica's business may develop such that it may be subject to increased regulatory requirements. In 2021, Comerica’s asset size increased and began to approach $100 billion. Certain enhanced prudential standards and related requirements will apply to Comerica if it exceeds $100 billion in average total consolidated assets calculated over four consecutive financial quarters, which could happen in the future. Category IV institutions ($100 to $250 billion in assets) under the Tailoring Rules are subject to additional requirements, such as certain enhanced prudential standards and monitoring and reporting certain risk-based indicators. Under the Tailoring Rules, Category IV firms are, among other things, subject to (1) supervisory capital stress testing on a biennial basis, (2) requirements to develop and maintain a capital plan on an annual basis and (3) certain liquidity risk management and risk committee requirements, including liquidity buffer and liquidity stress testing requirements. Comerica would also incur additional assessments under Regulation TT. If Comerica becomes subject to enhanced prudential standards, it will face more stringent requirements or limitations on its business, as well as increased compliance costs, and, depending on its levels of capital and liquidity, stress test results and other factors, may be limited in the types of activities it may conduct and be limited as to how it utilizes capital. Further, Comerica may be subject to heightened expectations, which could result in additional regulatory scrutiny, higher penalties, and more severe consequences if it is unable to meet those expectations.
Compliance with stringent capital requirements may adversely affect Comerica.
Comerica is required to satisfy stringent regulatory capital standards, as set forth in the “Supervision and Regulation” section of this report. These requirements, and any other new laws or regulations related to capital and liquidity, or any existing requirements that Comerica becomes subject to as a result of its increased asset size, could adversely affect Comerica's ability to pay dividends or make share repurchases, or could require Comerica to reduce business levels or to raise capital, including in ways that may adversely affect its results of operations or financial condition. If such a reduction placedcondition and/or existing shareholders. Maintaining higher levels of capital may reduce Comerica's profitability and otherwise adversely affect its business, financial condition, or its subsidiaries' credit ratings below investment grade, itresults of operations.
Tax regulations could also create obligationsbe subject to potential legislative, administrative or liabilities under the termsjudicial changes or interpretations.
Federal income tax treatment of existing arrangements that could increase Comerica's costs under such arrangements. Additionally, a downgrade of the credit rating of any particular security issued by Comerica or its subsidiaries could negatively affect the ability of the holders of that security to sell the securities and the prices at which any such securitiescorporations may be sold.clarified and/or modified by legislative, administrative or judicial changes or interpretations at any time. Any such changes could adversely affect Comerica, either directly, or indirectly as a result of effects on Comerica's customers.



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STRATEGIC RISK
Damage to Comerica’s reputation could damage its businesses.
Reputational risk is an increasing concern for businesses as customers are interested in doing business with companies they admire and trust. Such risks include compliance issues, operational challenges, or a strategic, high profile event. Comerica's business is based on the trust of its customers, communities, and entire value chain, which makes managing reputational risk extremely important. News or other publicity that impairs Comerica's reputation, or the reputation of the financial services industry generally, can therefore cause significant harm to Comerica’s business and prospects. Further, adverse publicity or negative information posted on social media websites regarding Comerica, whether or not true, may result in harm to Comerica’s prospects.
Comerica may not be able to utilize technology to efficiently and effectively develop, market, and deliver new products and services to its customers.
The financial services industry experiences rapid technological change with regular introductions of new technology-driven products and services. The ability to access and use technology is an increasingly important competitive factor in the financial services industry, and having the right technology is a critically important component to customer satisfaction. As well, the efficient and effective utilization of technology enables financial institutions to reduce costs. Comerica's future success depends, in part, upon its ability to address the needs of its customers by using technology to market and deliver products and services that will satisfy customer demands, meet regulatory requirements, and create additional efficiencies in Comerica's operations. Comerica may not be able to effectively develop new technology-driven products and services or be successful in marketing or supporting these products and services to its customers, which could have a material adverse impact on Comerica's financial condition and results of operations.
Competitive product and pricing pressures within Comerica's markets may change.
Comerica operates in a very competitive environment, which is characterized by competition from a number of other financial institutions in each market in which it operates. Comerica competes in termslargely on the basis of industry expertise, the range of products and services offered, pricing and reputation, customer convenience, quality customer service and responsiveness to customer needs and the overall relationship with our clients. Our competitors are large national and regional financial institutions and withas well as smaller financial institutions. Some of Comerica's larger competitors, including certain nationwide banks that have a significant presence in Comerica's market area, may make available to their customers a broader array of product, pricing and structure alternatives and, due to their asset size, may more easily absorb credit losses in a larger overall portfolio. Some of Comerica's competitors (larger or smaller) may have more

liberal lending policies and processes. Increasingly, Comerica competes with other companies based on financial technology and capabilities, such as mobile banking applications and funds transfer.
Additionally, the financial services industry is subject to extensive regulation. For more information, see the “Supervision and Regulation” section of this report. Such regulations may require significant additional investments in technology, personnel or other resources or place limitations on the ability of financial institutions, including Comerica, to engage in certain activities. Comerica's competitors may be subject to a significantly different or reduced degree of regulation due to their asset size or types of products offered. They may also have the ability to more efficiently utilize resources to comply with regulations or may be able to more effectively absorb the costs of regulations into their existing cost structure.
In addition to banks, Comerica's banking subsidiaries also face competition from other financial intermediaries, including savings and loan associations, consumer and commercial finance companies, leasing companies, venture capital funds, credit unions, investment banks, insurance companies and securities firms. Competition among providers of financial products and services continues to increase as technology advances have lowered the barriers to entry for financial technology companies, with customers having the opportunity to select from a growing variety of traditional and nontraditional alternatives, including crowdfunding, digital wallets and money transfer services. The ability of non-banking financial institutions to provide services previously limited to commercial banks has intensified competition. Because non-banking financial institutions are not subject to many of the same regulatory restrictions as banks and bank holding companies, they can often operate with greater flexibility and lower cost structures.
If Comerica is unable to compete effectively in products and pricing in its markets, business could decline, which could have a material adverse effect on Comerica's business, financial condition or results of operations.
The soundness of other financial institutions could adversely affect Comerica.
Comerica's ability to engage in routine funding transactions could be adversely affected by the actions and commercial soundness of other financial institutions. Financial services institutions are interrelated as a result of trading, clearing, counterparty or other relationships. Comerica has exposure to many different industries and counterparties, and it routinely executes transactions with counterparties in the financial industry, including brokers and dealers, commercial banks, investment banks, mutual and hedge funds, and other institutional clients. As a result, defaults by, or even rumors or questions about, one or more financial services institutions, or the financial services industry generally, have led, and may further lead, to market-wide liquidity problems and could lead to losses or defaults by us or by other institutions. Many of these transactions could expose Comerica to credit risk in the event of default of its counterparty or client. In addition, Comerica's credit risk may be impacted when the collateral held by it cannot be realized or is liquidated at prices not sufficient to recover the full amount of the financial instrument exposure due to Comerica. There is no assurance that any such losses would not adversely affect, possibly materially, Comerica.
The introduction, implementation, withdrawal, success and timing of business initiatives and strategies may be less successful or may be different than anticipated, which could adversely affect Comerica's business.
Comerica makes certain projections and develops plans and strategies for its banking and financial products. If Comerica does not accurately determine demand for its banking and financial product needs, it could result in
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Comerica incurring significant expenses without the anticipated increases in revenue, which could result in a material adverse effect on its business.
Changes Recently Comerica expanded its presence in customer behavior maythe Southeastern U.S. by establishing commercial offices in North Carolina. If Comerica's expansion is not successful, it could adversely impact Comerica's business, financial condition and results of operations.expenses.
Comerica uses a variety of financial tools, models and other methods to anticipate customer behavior as a part of its strategic planning and to meet certain regulatory requirements. Individual, economic, political, industry-specific conditions and other factors outside of Comerica's control, such as fuel prices, energy costs, tariffs, real estate values or other factors that affect customer income levels, could alter predicted customer borrowing, repayment, investment and deposit practices. Such a change in these practices could materially adversely affect Comerica's ability to anticipate business needs and meet regulatory requirements.
Recently, there have been discussions regarding potential changes to U.S. trade policies, legislation, treaties and tariffs, including trade policies and tariffs affecting China, the European Union, Canada and Mexico and retaliatory tariffs by such countries. Tariffs and retaliatory tariffs have been imposed, and additional tariffs and retaliatory tariffs have been proposed. Also, on October 1, 2018, the United States, Canada and Mexico agreed to a new trade deal, the United States-Mexico-Canada Agreement ("USMCA"), to replace the North American Free Trade Agreement. The USMCA is subject to congressional approval and various components of the USMCA are not effective until 2020. These and any other changes in tariffs, retaliatory tariffs or other trade restrictions on products and materials that Comerica’s customers import or export could cause the prices of their products to increase, which could reduce demand for such products, or reduce

customer margins, and adversely impact their revenues, financial results and ability to service debt; in turn, this could adversely affect Comerica’s financial condition and results of operations.
Further, difficult economic conditions may negatively affect consumer confidence levels. A decrease in consumer confidence levels would likely aggravate the adverse effects of these difficult market conditions on Comerica, Comerica's customers and others in the financial institutions industry.
Management's ability to maintain and expand customer relationships may differ from expectations.
The financial services industry is very competitive. Comerica not only vies for business opportunities with new customers, but also competes to maintain and expand the relationships it has with its existing customers. While management believes that it can continue to grow many of these relationships, Comerica will continue to experience pressures to maintain these relationships as its competitors attempt to capture its customers. These pressures may be exacerbated by the continued disruption to in-person activities due to COVID-19. Failure to create new customer relationships and to maintain and expand existing customer relationships to the extent anticipated may adversely impact Comerica's earnings.
Methods of reducing risk exposures might not be effective.
Instruments, systems and strategies used to hedge or otherwise manage exposure to various types of credit, market, liquidity, operational, compliance, financial reporting and strategic risks could be less effective than anticipated. As a result, Comerica may not be able to effectively mitigate its risk exposures in particular market environments or against particular types of risk, which could have a material adverse impact on Comerica's business, financial condition or results of operations.
For more information regarding risk management, please see "Risk Management" on pages F-21 through F-34 of the Financial Section of this report.
Catastrophic events, including, but not limited to, hurricanes, tornadoes, earthquakes, fires, droughts and floods, may adversely affect the general economy, financial and capital markets, specific industries, and Comerica.
Comerica has significant operations and a significant customer base in California, Texas, Florida and other regions where natural and other disasters may occur. These regions are known for being vulnerable to natural disasters and other risks, such as tornadoes, hurricanes, earthquakes, fires, droughts and floods, the nature and severity of which may be impacted by climate change. These types of natural catastrophic events have at times disrupted the local economies, Comerica's business and customers, and have caused physical damage to Comerica's property in these regions. In addition, catastrophic events occurring in other regions of the world may have an impact on Comerica's customers and in turn, on Comerica. Comerica’s business continuity and disaster recovery plans may not be successful upon the occurrence of one of these scenarios, and a significant catastrophic event anywhere in the world could materially adversely affect Comerica's operating results.
Tax regulations could be subject to potential legislative, administrative or judicial changes or interpretations.
Federal income tax treatment of corporations may be clarified and/or modified by legislative, administrative or judicial changes or interpretations at any time. Any such changes could adversely affect Comerica, either directly, or indirectly as a result of effects on Comerica's customers. For example, the tax reform bill enacted on December 22, 2017 has had, and is expected to continue to have, far-reaching and significant effects on Comerica, its customers and the U.S. economy, including commercial customer borrowings due to the increase in cash flows as a result of the reduction in the corporate statutory tax rate.
Any future strategic acquisitions or divestitures may present certain risks to Comerica's business and operations.
Difficulties in capitalizing on the opportunities presented by a future acquisition may prevent Comerica from fully achieving the expected benefits from the acquisition, or may cause the achievement of such expectations to take longer to realize than expected.
Further, the assimilation of the acquired entity's customers and markets could result in higher than expected deposit attrition, loss of key employees, disruption of Comerica's businesses or the businesses of the acquired entity or otherwise adversely affect Comerica's ability to maintain relationships with customers and employees or achieve the anticipated benefits of the acquisition. These matters could have an adverse effect on Comerica for an undetermined period. Comerica will be subject to similar risks and difficulties in connection with any future decisions to downsize, sell or close units or otherwise change the business mix of Comerica.
Management's ability to retain key officers and employees may change.
Comerica's future operating results depend substantially upon the continued service of its executive officers and key personnel. Comerica's future operating results also depend in significant part upon its ability to attract and retain qualified management, financial, technical, marketing, sales and support personnel. Competition for qualified personnel is intense,

and Comerica cannot ensure success in attracting or retaining qualified personnel. There may be only a limited number of persons with the requisite skills to serve in these positions, and it may be increasingly difficult for Comerica to hire personnel over time.
Further, Comerica's ability to retain key officers and employees may be impacted by legislation and regulation affecting the financial services industry. In 2016, the FRB, OCC and several other federal financial regulators revised and re-proposed rules to implement Section 956 of the Dodd-Frank Act. Section 956 directed regulators to jointly prescribe regulations or guidelines prohibiting incentive-based payment arrangements, or any feature of any such arrangement, at covered financial institutions that encourage inappropriate risks by providing excessive compensation or that could lead to a material financial loss. Consistent with the Dodd-Frank Act, the proposed rule would impose heightened standards for institutions with $50 billion or more in total consolidated assets, which includes Comerica. For these larger institutions, the proposed rule would require the deferral of at least 40 percent of incentive-based payments for designated executives and significant risk-takers who individually have the ability to expose the institution to possible losses that are substantial in relation to the institution's size, capital or overall risk tolerance. Moreover, incentive-based compensation of these individuals would be subject to potential clawback for seven years following vesting. Further, the rule imposes enhanced risk management controls and governance and internal policy and procedure requirements with respect to incentive compensation. Accordingly, Comerica may be at a disadvantage to offer competitive compensation compared to other financial institutions (as referenced above) or companies in other industries, which may not be subject to the same requirements.
Comerica's business, financial condition or results of operations could be materially adversely affected by the loss of any of its key employees, or Comerica's inability to attract and retain skilled employees.
LegalAny future strategic acquisitions or divestitures may present certain risks to Comerica's business and operations.
Difficulties in capitalizing on the opportunities presented by a future acquisition may prevent Comerica from fully achieving the expected benefits from the acquisition, or may cause the achievement of such expectations to take longer to realize than expected.
Further, the assimilation of any acquired entity's customers and markets could result in higher than expected deposit attrition, loss of key employees, disruption of Comerica's businesses or the businesses of the acquired entity or otherwise adversely affect Comerica's ability to maintain relationships with customers and employees or achieve the anticipated benefits of the acquisition. These matters could have an adverse effect on Comerica for an undetermined period. Comerica would be subject to similar risks and difficulties in connection with any future decisions to downsize, sell or close units or otherwise change the business mix of Comerica.
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GENERAL RISK
The COVID-19 pandemic has and will likely continue to adversely impact our business, and the ultimate impact on our business and financial results will depend on future developments, which are highly uncertain and cannot be predicted, including the scope and duration of the pandemic and actions taken by governmental authorities in response to the pandemic.
The COVID-19 pandemic has negatively impacted the global economy, disrupted global supply chains, lowered equity market valuations, created significant volatility and disruption in financial markets, and increased unemployment levels. As a result of the continued uncertainty related to the pandemic and its variants, the demand for our products and services has been, and is expected to continue to be, significantly impacted. Furthermore, the pandemic has influenced and could further influence the recognition of credit losses in our loan portfolios and has increased and could further increase our allowance for credit losses, as long as some businesses' operations are impacted, and as more customers may draw on their lines of credit or seek additional loans to help finance their businesses. In response to the pandemic, we granted hardship relief assistance for customers experiencing financial difficulty as a result of COVID-19, including loan deferrals. As of December 31, 2021, pandemic-related payment deferrals totaled $22 million, representing approximately 10 obligors and consisting entirely of retail loans, primarily residential mortgages. Certain industries have been particularly susceptible to the effects of the pandemic, such as retail commercial real estate, retail goods and services, hotels, arts/recreation, airlines, restaurants and bars, childcare, coffee shops, cruise lines, education, gasoline and convenience stores, religious organizations, senior living, freight and travel arrangements, and Comerica has outstanding loans to clients in these industries, as described below under "Other Sectors Most at Risk due to Economic Stress Resulting from COVID-19 Impacts" on page F-26. Comerica's business operations may also be disrupted if significant portions of our workforce are unable to work effectively, including because of illness, quarantines, government actions, or other restrictions in connection with the pandemic.
The extent to which the COVID-19 pandemic impacts our business, results of operations, and financial condition, as well as our regulatory proceedingscapital and related matters with respectliquidity ratios, will depend on future developments, which are highly uncertain and cannot be predicted, including the scope and duration of the pandemic and actions taken by governmental authorities and other third parties in response to the pandemic.
General political, economic or industry conditions, either domestically or internationally, may be less favorable than expected.
Local, domestic, and international events including economic, financial market, political and industry specific conditions affect the financial services industry, including those directly involvingand indirectly. The economic environment and market conditions in which Comerica operates continue to be uncertain. While stimulus packages, the rollout of the COVID vaccine, strong business spending and its subsidiaries, couldimproved labor markets contributed to an overall improved economic outlook in 2021, there continues to be uncertainty related to the impact of emerging COVID-19 variants and vaccine efficacy, supply chain constraints, future monetary and fiscal support and inflationary pressures. Conditions related to the COVID-19 pandemic, inflation, recession, unemployment, volatile interest rates, international conflicts, changes in trade policies and other factors, such as real estate values, energy prices, state and local municipal budget deficits, government spending and the U.S. national debt, outside of our control may, directly and indirectly, adversely affect ComericaComerica.
Methods of reducing risk exposures might not be effective.
Instruments, systems and strategies used to hedge or the financial services industry in general.
Comerica has been, and may in the future be, subjectotherwise manage exposure to various legaltypes of credit, market, liquidity, technology, operational, compliance, financial reporting and regulatory proceedings. It is inherently difficultstrategic risks could be less effective than anticipated. As a result, Comerica may not be able to assess the outcomeeffectively mitigate its risk exposures in particular market environments or against particular types of these matters, and there can be no assurance that Comerica will prevail in any proceeding or litigation. Any such matter could result in substantial cost and diversion of Comerica's efforts,risk, which by itself could have a material adverse effectimpact on Comerica's financial condition and operating results. Further, adverse determinations in such matters could result in fines or actions by Comerica's regulators that could materially adversely affect Comerica's business, financial condition or results of operations.
Comerica establishes reserves for legal claims when payments associated with the claims become probable and the costs can be reasonably estimated. Comerica may still incur legal costs for a matter even if it has not established a reserve. In addition, due to the inherent subjectivityFor more information regarding risk management, please see "Risk Management" starting on page F-17 of the assessments and unpredictabilityFinancial Section of the outcome of legal proceedings, the actual cost of resolving a legal claim may be substantially higher than any amounts reserved for that matter. The ultimate resolution of a pending legal proceeding, depending on the remedy sought and granted, could adversely affect Comerica's results of operations and financial condition.this report.
Comerica may incur losses due to fraud.
Fraudulent activity can take many forms and has escalated as more tools for accessing financial services emerge, such as real-time payments. Fraud schemes are broad and continuously evolving.  Examples include but are not limited to:  debit card/credit card fraud, check fraud, mechanical devices attached to ATM machines, social engineering and phishing attacks to obtain personal information, impersonation of our clients through the use of falsified or stolen credentials, employee fraud, information theft and other malfeasance. Increased deployment of technologies, such as chip card technology, defray and reduce aspects of fraud; however, criminals are turning to other sources to steal personally identifiable information in order to impersonate the consumer to commit fraud. Many of these data compromises have been widely reported in the media. Further, as a result of the increased sophistication of fraud activity, Comerica continues to invest in systems, resources, and controls to detect and prevent fraud. This will result in continued ongoing investments in the future.
Terrorist activities or other hostilitiesCatastrophic events may adversely affect the general economy, financial and capital markets, specific industries, and Comerica.
Terrorist attacksActs of terrorism, cyber-terrorism, political unrest, war, civil disturbance, armed regional and international hostilities and international responses to these hostilities, natural disasters (including tornadoes, hurricanes, earthquakes, fires, droughts and floods), global health risks or other hostilitiespandemics, or the threat of or perceived potential for these events could have a negative impact on us. Comerica’s business continuity and disaster recovery plans may disruptnot be successful upon the occurrence of one of these scenarios, and a significant catastrophic event anywhere in the world could materially adversely affect Comerica's operations or thoseoperating results.
22

In particular, certain of the regions where Comerica operates, including California, Texas, and Florida, are known for being vulnerable to natural disasters, the nature and severity of which may be impacted by climate change. These types of natural catastrophic events have at times disrupted the local economies, Comerica's business and customers, and have caused physical damage to Comerica's property in these regions.
Further, catastrophic events may have an impact on Comerica's customers and in turn, on Comerica.
In addition, these events have had and may continue to have an adverse impact on the U.S. and world economy in general and consumer confidence and spending in particular, which could harm Comerica's operations. Any of these events could increase volatility in the U.S. and world financial markets, which could harm Comerica's stock price and may limit the capital resources available to Comerica and its customers. This could have a material adverse impact on Comerica's operating results, revenues and costs and may result in increased volatility in the market price of Comerica's common stock.

Changes in accounting standards could materially impact Comerica's financial statements.
From time to time accounting standards setters change the financial accounting and reporting standards that govern the preparation of Comerica’s financial statements. These changes can be difficult to predict and can materially impact how Comerica records and reports its financial condition and results of operations. In some cases, Comerica could be required to apply a new or revised standard retroactively, resulting in changes to previously reported financial results, or a cumulative charge to retained earnings. In particular, the Financial Accounting Standards Board (“FASB”) has issued a new accounting standard, CECL, for the recognition and measurement of credit losses for loans and debt securities. The new standard will be effective for Comerica in the first quarter 2020. The anticipated change in loan loss reserves due to CECL is currently unknown and is dependent upon many factors that are yet to be determined, such as the economic environment at adoption and any future FASB clarifications. Comerica anticipates that CECL will have an impact on its loan loss reserves and retained earnings, as well as how it manages its capital.
Comerica's accounting policiesestimates and processes are critical to the reporting of financial condition and results of operations. They require management to make estimates about matters that are uncertain.
Accounting policiesestimates and processes are fundamental to how Comerica records and reports its financial condition and results of operations. Management must exercise judgment in selecting and applying many of these accounting policiesestimates and processes so they comply with U.S. Generally Accepted Accounting Principles ("GAAP"). In some cases, management must select thean accounting policy or method to apply from two or more alternatives, any of which may be reasonable under the circumstances, yet may result in the Company reporting materially different results than would have been reported under a different alternative.
Management has identified certain accounting policiesestimates as being critical because they require management's judgment to make difficult, subjective or complex judgments about matters that are uncertain. Materially different amounts could be reported under different conditions or using different assumptions or estimates. Comerica has established detailed policies and control procedures that are intended to ensure these critical accounting estimates and judgments are well controlled and applied consistently. In addition, the policies and procedures are intended to ensure that the process for changing methodologies occurs in an appropriate manner. Because of the uncertainty surrounding management's judgments and the estimates pertaining to these matters, Comerica cannot guarantee that it will not be required to adjust accounting policies or restate prior period financial statements. See “Critical Accounting Policies”Estimates” starting on pages F-35 through F-37page F-34 of the Financial Section of this report and Note 1 of the Notes to Consolidated Financial Statements locatedstarting on pagespage F-46 through F-58 of the Financial Section of this report.
Controls and procedures may not prevent or detect all errors or acts of fraud.
Controls and procedures are designed to provide reasonable assurance that information required to be disclosed in reports Comerica files or submits under the Exchange Act is accurately accumulated and communicated to management, and recorded, processed, summarized, and reported within the time periods specified in the SEC's rules and forms. Disclosure controls and procedures or internal controls and procedures, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met, due to certain inherent limitations. These limitations include the realities that judgments in decision making can be faulty, that alternative reasoned judgments can be drawn, that breakdowns can occur because of an error or mistake, or that controls may be fraudulently circumvented. Accordingly, because of the inherent limitations in control systems, misstatements due to error or fraud may occur and not be detected.
Comerica's stock price can be volatile.
Stock price volatility may make it more difficult for shareholders to resell their common stock when they want and at prices they find attractive. Comerica's stock price can fluctuate significantly in response to a variety of factors including, among other things:
Actual or anticipated variations in quarterly results of operations.
Recommendations or projections by securities analysts.
Operating and stock price performance of other companies that investors deem comparable to Comerica.
News reports relating to trends, concerns and other issues in the financial services industry.
Perceptions in the marketplace regarding Comerica and/or its competitors.
New technology used, or services offered, by competitors.
Significant acquisitions or business combinations, strategic partnerships, joint ventures or capital commitments by or involving Comerica or its competitors.
Changes in dividends and capital returns.
Changes in government regulations.
Cyclical fluctuations.

Geopolitical conditions such as acts or threats of terrorism or military conflicts.
Activity by short sellers and changing government restrictions on such activity.
23

General market fluctuations, including real or anticipated changes in the strength of the economy; industry factors and general economic and political conditions and events, such as economic slowdowns or recessions; interest rate changes, oil price volatility or credit loss trends, among other factors, could also cause Comerica's stock price to decrease regardless of operating results.
For the above and other reasons, the market price of Comerica's securities may not accurately reflect the underlying value of the securities, and investors should consider this before relying on the market prices of Comerica's securities when making an investment decision.

Item 1B.  Unresolved Staff Comments.
None.

Item 2.  Properties.
The executive offices of Comerica are located in the Comerica Bank Tower, 1717 Main Street, Dallas, Texas 75201. Comerica Bank occupies six floors of the building, plus additional space on the building's lower level. Comerica does not own the Comerica Bank Tower space, but has naming rights to the building and leases the space from an unaffiliated third party. The lease for such space used by Comerica and its subsidiaries extends through September 2028. Comerica's Michigan headquarters are located in a 10-story building in the central business district of Detroit, Michigan at 411 W. Lafayette, Detroit, Michigan 48226. Such building is owned by Comerica Bank. As of December 31, 2018,2021, Comerica, through its banking affiliates, operated at a total of 550557 locations. This includes banking centers, trust services locations, and/or loan production or other financial services offices, primarily in the States of Texas, Michigan, California, Florida and Arizona. Of the 550557 locations, 221217 were owned and 329340 were leased. As of December 31, 2018,2021, affiliates also operated from leased spaces in Denver, Colorado; Wilmington, Delaware; Oakbrook Terrace, Illinois; Boston, Massachusetts; Minneapolis, Minnesota; Morristown, New Jersey; New York, New York; Rocky Mount,Charlotte, North Carolina; Raleigh, North Carolina; Winston-Salem, North Carolina; Memphis, Tennessee; McLean, Virginia; Bellevue, Washington; Monterrey, Mexico; Toronto, Ontario, Canada and Windsor, Ontario, Canada. Comerica and its subsidiaries own, among other properties, a check processing center in Livonia, Michigan, and three buildings in Auburn Hills, Michigan, used mainly for lending functions and operations.

Item 3.  Legal Proceedings.
Please see Note 21 of the Notes to Consolidated Financial Statements locatedstarting on pages F-93 throughpage F-94 of the Financial Section of this report.


Item 4.   Mine Safety Disclosures.
Not applicable.

24


PART II


Item 5.  Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.
Market Information, Holders of Common Stock and Dividends
The common stock of Comerica Incorporated is traded on the New York Stock Exchange (NYSE Trading Symbol: CMA). At February 8, 2019,14, 2022, there were approximately 8,844 8,203 record holders of Comerica's common stock.
On January 22, 2019, Comerica’s Board of Directors approved a dividend of $0.67 per common share payable on April 1, 2019 to shareholders of record on March 15, 2019.    Subject to approval of the Board of Directors, and applicable regulatory requirements and the Series A Preferred Stock dividend preference, Comerica expects to continue its policy of paying regular cash dividends on a quarterly basis. A discussion of Comerica's dividend restrictions applicable to Comerica is set forth in NoteNotes 13 and 20 of the Notes to Consolidated Financial Statements locatedstarting on pages F-81 and F-92, through F-93respectively, of the Financial Section of this report, in the "Capital" section on pages F-18F-16 through F-20F-17 of the Financial Section of this report and in the “Supervision and Regulation” section of this report.
Performance Graph
Our performance graph is available under the caption "Performance Graph" on page F-2 of the Financial Section of this report.
Purchases of Equity Securities by the Issuer and Affiliated Purchasers
AuthorizationComerica did not make any share repurchases under the share repurchase program during the first quarter of 2021 due to the uncertain path of the economic recovery, but resumed repurchases in the second quarter of 2021. On April 27, 2021 Comerica's Board of Directors approved the authorization to repurchase up to an additional 10 million shares of Comerica Incorporatedits outstanding common stock, was announced byincluding an Accelerated Share Repurchase transaction (ASR) effected in the Board on July 24, 2018.second quarter of 2021. As of December 31, 2018,2021, a total of 65.297.2 million shares have been authorized for repurchase under the equityshare repurchase program since its inception in 2010. There is no expiration date for Comerica's equityshare repurchase program.
Previously,The following table summarizes Comerica's equityshare repurchase program also coveredactivity for the repurchaseyear ended December 31, 2021.
(shares in thousands)Total Number of Shares Purchased as 
Part of Publicly Announced Repurchase Plans or Programs
Remaining
Repurchase
Authorization (a)
Total Number
of Shares
Purchased (b)
Average Price
Paid Per 
Share
Total first quarter 2021— 4,870 55 $61.39 
Total second quarter 20215,882 8,988 5,884 76.51 
Total third quarter 20213,050 5,938 3,052 72.12 
October 2021— 5,938 80.79 
November 2021564 5,374 564 88.63 
December 2021— 5,374 — — 
Total fourth quarter 2021564 5,374 565 88.61 
Total 20219,496 5,374 9,556 $75.73 
(a)Maximum number of up to 14.1 million warrants (12.1 million share-equivalents). All unexercised warrants expired according to their termsshares that may yet be purchased under the publicly announced plans or programs.
(b)Includes approximately 60,000 shares (including 1,000 shares in the quarter ended December 31, 2018.
In January 2019,2021) purchased pursuant to deferred compensation plans and shares purchased from employees to pay for taxes related to restricted stock vesting under the Board also authorized the repurchaseterms of up to 15 million additional shares of Comerica Incorporated outstanding common stock.
The following table summarizes Comerica's equity repurchase activity foran employee share-based compensation plan during the year ended December 31, 2018.2021. These transactions are not considered part of Comerica's repurchase program.

(shares in thousands)
Total Number of Shares 
and Warrants Purchased 
as Part of Publicly
Announced Repurchase
Plans or Programs (a)
 
Remaining
Repurchase
Authorization 
(b)
 
Total Number
of Shares
Purchased (c)
 
Average 
Price
Paid Per 
Share
Total first quarter 20181,565
 8,714
 1,674
 $95.16
Total second quarter 20181,755
 6,952
 1,759
 96.32
Total third quarter 20185,137
 11,706
(d)5,143
 97.32
October 20184,701
 6,987
 4,703
 79.17
November 2018
 6,346
 
 
December 20181,615
 4,707
 1,615
 79.16
Total fourth quarter 20186,316
 4,707
 6,318
 79.16
Total 201814,773
 4,707
 14,894
 $89.26
(a)The Corporation made no repurchases of warrants under the repurchase program during the year ended December 31, 2018. Upon exercise of a warrant, the number of shares with a value equal to the aggregate exercise price is withheld from an exercising warrant holder as payment (known as a "net exercise provision"). During the year ended December 31, 2018, the Corporation withheld the equivalent of approximately 309,000 shares to cover an aggregate of $9 million in exercise price and issued approximately 585,000 shares to the exercising warrant holders. Shares withheld in connection with the net exercise provision are not included in the total number of shares or warrants purchased in the above table. All unexercised warrants expired in the fourth quarter.
(b)Maximum number of shares and warrants that may yet be purchased under the publicly announced plans or programs. In January 2019,
the Board rescinded its warrant repurchase authorization following the expiration of all unexercised warrants.
(c)Includes approximately 121,000 shares (including 2,000 shares in the quarter ended December 31, 2018) purchased pursuant to deferred compensation plans and shares purchased from employees to pay for taxes related to restricted stock vesting under the terms of an employee share-based compensation plan during the year ended December 31, 2018. These transactions are not considered part of the Corporation's repurchase program.
(d)Includes July 24, 2018 equity repurchase authorization for an additional 10 million shares.

Item 6.  Selected Financial Data.[Reserved]
Reference is made to the caption “Selected Financial Data” on page F-3 of the Financial Section of this report.

Item 7.  Management’s Discussion and Analysis of Financial Condition and Results of Operations.
Reference is made to the sections entitled “2018“2021 Overview, and 2019 Outlook,” “Results of Operations," "Strategic Lines of Business," "Balance Sheet and Capital Funds Analysis," "Risk Management," "Critical Accounting Policies,Estimates," "Supplemental Financial Data" and "Forward-Looking Statements" on pages F-4F-3 through F-40 of the Financial Section of this report.


Item 7A.  Quantitative and Qualitative Disclosures About Market Risk.
Reference is made to the subheadings entitled “Market and Liquidity Risk,” “Operational Risk,” "Technology Risk," “Compliance Risk” and “Strategic Risk” on pages F-29F-27 through F-34F-33 of the Financial Section of this report.
25

Item 8.  Financial Statements and Supplementary Data.
Reference is made to the sections entitled “Consolidated Balance Sheets,” “Consolidated Statements of Income,” “Consolidated Statements of Comprehensive Income,” “Consolidated Statements of Changes in Shareholders' Equity,” “Consolidated Statements of Cash Flows,” “Notes to Consolidated Financial Statements,” “Report of Management,” and “Reports of Independent Registered Public Accounting Firm,” and “Historical Review”Firm” (PCAOB ID: 42) on pages F-41 through F-109 of the Financial Section of this report.

Item 9.  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.
None.

Item 9A.  Controls and Procedures.
Disclosure Controls and Procedures
As required by Rule 13a-15(b) of the Exchange Act, management, including the Chief Executive Officer and Chief Financial Officer, conducted an evaluation as of the end of the period covered by this Annual Report on Form 10-K, of the effectiveness of our disclosure controls and procedures as defined in Exchange Act Rule 13a-15(e). Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that Comerica's disclosure controls and procedures were effective as of the end of the period covered by this Annual Report on Form 10-K.
Internal Control over Financial Reporting
Management's annual report on internal control over financial reporting and the related attestation report of Comerica's registered public accounting firm are included on pages F-104F-106 and F-105F-107 in the Financial Section of this report.
As required by Rule 13a-15(d) of the Exchange Act, management, including the Chief Executive Officer and Chief Financial Officer, conducted an evaluation of our internal control over financial reporting to determine whether any changes occurred during the last quarter of the fiscal year covered by this Annual Report on Form 10-K that have materially affected, or are reasonably likely to materially affect, Comerica's internal control over financial reporting. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that there has been no such change during the last quarter of the fiscal year covered by this Annual Report on Form 10-K that has materially affected, or is reasonably likely to materially affect, Comerica's internal control over financial reporting.

Item 9B.  Other Information.
None.

Item 9C.  Disclosure Regarding Foreign Jurisdictions that Prevent Inspections.
None.

PART III
Item 10.  Directors, Executive Officers and Corporate Governance.
Comerica has a Senior Financial Officer Code of Ethics that applies to the Chief Executive Officer, the Chief Financial Officer, the Chief Accounting Officer and the Treasurer. The Senior Financial Officer Code of Ethics is available on Comerica's website at www.comerica.com. If any substantive amendments are made to the Senior Financial Officer Code of Ethics or if Comerica grants any waiver, including any implicit waiver, from a provision of the Senior Financial Officer Code of Ethics to the Chief Executive Officer, the Chief Financial Officer, the Chief Accounting Officer or the Treasurer, we will disclose the nature of such amendment or waiver on our website.
The remainder of the response to this item will be included under the sections captioned “Information About Nominees,” “Board and Committee Governance,” “Committees and Meetings of Directors,” and “Executive Officers” and “Section 16(a) Beneficial Ownership Reporting Compliance” of Comerica's definitive Proxy Statement relating to the Annual Meeting of Shareholders to be held on April 23, 2019,26, 2022, which sections are hereby incorporated by reference.


26

Item 11.  Executive Compensation.
The response to this item will be included under the sections captioned “Compensation Committee Interlocks and Insider Participation,” “Compensation Discussion and Analysis,” “Compensation of Directors,” “Governance, Compensation and Nominating Committee Report,” “2018“2021 Summary Compensation Table,” “2018“2021 Grants of Plan-Based Awards,” “Outstanding Equity Awards at Fiscal Year-End 2018,2021,“2018“2021 Option Exercises and Stock Vested,” “Pension Benefits at Fiscal Year-End 2018,2021,“2018“2021 Nonqualified Deferred Compensation,” “Potential Payments upon Termination or Change of Control at Fiscal Year-End 2018”2021” and "Pay Ratio Disclosure" of Comerica's definitive Proxy Statement relating to the Annual Meeting of Shareholders to be held on April 23, 2019,26, 2022, which sections are hereby incorporated by reference.

Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.
The response to this item will be included under the sections captioned “Security Ownership of Certain Beneficial Owners,” “Security Ownership of Management” and "Securities Authorized for Issuance Under Equity Compensation Plans" of Comerica's definitive Proxy Statement relating to the Annual Meeting of Shareholders to be held on April 23, 2019,26, 2022, which sections are hereby incorporated by reference.

Item 13.  Certain Relationships and Related Transactions, and Director Independence.
The response to this item will be included under the sections captioned “Director Independence,” “Transactions with Related Persons,” and “Information about Nominees” of Comerica's definitive Proxy Statement relating to the Annual Meeting of Shareholders to be held on April 23, 2019,26, 2022, which sections are hereby incorporated by reference.

Item 14.  Principal Accountant Fees and Services.
The response to this item will be included under the section captioned “Independent Registered Public Accounting Firm” of Comerica's definitive Proxy Statement relating to the Annual Meeting of Shareholders to be held on April 23, 2019,26, 2022, which section is hereby incorporated by reference.
27




PART IV


Item 15.  Exhibits and Financial Statement SchedulesSchedules.
The following documents are filed as a part of this report:
 
1.Financial Statements: The financial statements that are filed as part of this report are included in the Financial Section on pages F-41 through F-106.F-109.
2.All of the schedules for which provision is made in the applicable accounting regulations of the SEC are either not required under the related instruction, the required information is contained elsewhere in the Form 10-K, or the schedules are inapplicable and therefore have been omitted.
3.Exhibits:
3.13.Exhibits:
2(not applicable)
3.1
3.2
3.3
43.4
4[Reference is made to Exhibits 3.1, 3.2, 3.3 and 3.33.4 in respect of instruments defining the rights of security holders. In accordance with Regulation S-K Item No. 601(b)(4)(iii), the Registrant is not filing copies of instruments defining the rights of holders of long-term debt because none of those instruments authorizes debt in excess of 10% of the total assets of the Registrant and its subsidiaries on a consolidated basis. The Registrant hereby agrees to furnish a copy of any such instrument to the SEC upon request.]
94.1
4.2
9(not applicable)
10.1†
10.1A†A†
10.1B†B†
10.1C†C†
D†
28

10.1D†E†
10.1E†F†
G†
H†
I†
10.1F†J†
10.1G†K†
10.2†L†
M†
10.2†
10.2A†

10.2B†A†
10.2C†B†
10.2D†C†
10.2E†D†
10.2F†E†
10.2G†F†
10.2H†G†
10.2I†
10.2J†
29

10.2K†H†
10.2L†I†
10.2M†
10.2N†J†
10.2O†
10.2P†K†
10.2Q†

10.2R†10.3†
10.2S†
10.2T†
10.2U†
10.3†
10.4†
10.5†
10.6†10.5†
10.7†10.6†
10.8†10.7†
10.9†10.8†
10.10†10.9†
10.11†
10.12†10.10†
10.13†10.11†
10.13A†A†

10.13B†B†
10.13C†C†
30

10.13D†D†
10.13E†E†
10.14†10.12†
10.14A†A†
10.15†10.13†
10.16†10.14†
10.17†
10.18A†
10.15†
10.18B†
10.18C†
10.18D†
10.19†
10.19A†A†
10.20†10.16†
10.20A†A†
10.21†10.17†

10.21A†A†
10.22†10.18†
10.23†10.19†
10.23A†13(not applicable)
1314(not applicable)
1416(not applicable)
1618(not applicable)
1821(not applicable)
21
23.122(not applicable)
23.1
24(not applicable)
31.1
31

31.2
32
33(not applicable)
34(not applicable)
35(not applicable)
95(not applicable)
9996(not applicable)
10199(not applicable)
101Financial statements from the Registrant's Annual Report on Form 10-K of the Registrant for the year ended December 31, 2018,2021, formatted in Extensible Business Reporting Language:Inline XBRL: (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Income, (iii) the Consolidated Statements of Changes in Shareholders' Equity, (iv) the Consolidated Statements of Cash Flows and (v) the Notes to Consolidated Financial Statements.
104The cover page from the Registrant's Annual Report on Form 10-K for the year ended December 31, 2021, formatted in Inline XBRL (included in Exhibit 101).
Management contract or compensatory plan or arrangement.
File No. for all filings under Exchange Act, unless otherwise noted: 1-10706.

Item 16.  Form 10-K SummarySummary.
Not applicable.

32

Table of Contents
FINANCIAL REVIEW AND REPORTS
Comerica Incorporated and Subsidiaries



















F-1

Table of Contents
PERFORMANCE GRAPH
The graph shown below compares the total returns (assuming reinvestment of dividends) of Comerica Incorporated common stock, the S&P 500 Index and the KBW Bank Index. The graph assumes $100 invested in Comerica Incorporated common stock (returns based on stock prices per the NYSE) and each of the indices on December 31, 20132016 and the reinvestment of all dividends during the periods presented.
ye20185yrcomparisonv2a01.jpgcma-20211231_g1.jpg
201620172018201920202021
Comerica Incorporated10012910511394152
KBW Bank Index10011998133119165
S&P 500 Index100122116153181233

The performance shown on the graph is not necessarily indicative of future performance.


SELECTED FINANCIAL DATA
F-2
(dollar amounts in millions, except per share data)         
Years Ended December 312018 2017 2016 2015 2014
EARNINGS SUMMARY         
Net interest income$2,352
 $2,061
 $1,797
 $1,689
 $1,655
Provision for credit losses(1) 74
 248
 147
 27
Noninterest income976
(a)1,107
 1,051

1,035
(b)857
Noninterest expenses1,794
(a), (c)1,860
(c)1,930
(c)1,827
(b)1,615
Provision for income taxes300
 491
(d)193
 229
 277
Net income1,235
 743
 477
 521
 593
Net income attributable to common shares1,227
 738
 473
 515
 586
PER SHARE OF COMMON STOCK         
Diluted earnings per common share$7.20
 $4.14
 $2.68
 $2.84
 $3.16
Cash dividends declared1.84
 1.09
 0.89
 0.83
 0.79
Common shareholders’ equity46.89
 46.07
 44.47
 43.03
 41.35
Tangible common equity (e)42.89
 42.34
 40.79
 39.33
 37.72
Market value68.69
 86.81
 68.11
 41.83
 46.84
Average diluted shares (in millions)171
 178
 177
 181
 185
YEAR-END BALANCES         
Total assets$70,818
 $71,567
 $72,978
 $71,877
 $69,186
Total earning assets65,513
 65,880
 67,518
 66,687
 63,788
Total loans50,163
 49,173
 49,088
 49,084
 48,593
Total deposits55,561
 57,903
 58,985
 59,853
 57,486
Total medium- and long-term debt6,463
 4,622
 5,160
 3,058
 2,675
Total common shareholders’ equity7,507
 7,963
 7,796
 7,560
 7,402
AVERAGE BALANCES         
Total assets$70,724
 $71,452
 $71,743
 $70,247
 $66,336
Total earning assets65,410
 66,300
 66,545
 65,129
 61,560
Total loans48,766
 48,558
 48,996
 48,628
 46,588
Total deposits55,935
 57,258
 57,741
 58,326
 54,784
Total medium- and long-term debt5,842
 4,969
 4,917
 2,905
 2,963
Total common shareholders’ equity7,809
 7,952
 7,674
 7,534
 7,373
CREDIT QUALITY         
Total allowance for credit losses$701
 $754
 $771
 $679
 $635
Total nonperforming loans229
 410
 590
 379
 290
Foreclosed property1
 5
 17
 12
 10
Total nonperforming assets230
 415
 607
 391
 300
Net credit-related charge-offs51
 92
 157
 101
 25
Net credit-related charge-offs as a percentage of average total loans0.11% 0.19% 0.32% 0.21% 0.05%
Allowance for loan losses as a percentage of total period-end loans1.34
 1.45
 1.49
 1.29
 1.22
Allowance for loan losses as a multiple of total nonperforming loans2.9x
 1.7x
 1.2x
 1.7x
 2.1x
RATIOS         
Net interest margin3.58% 3.11% 2.71% 2.60% 2.69%
Return on average assets1.75
 1.04
 0.67
 0.74
 0.89
Return on average common shareholders’ equity15.82
 9.34
 6.22
 6.91
 8.05
Dividend payout ratio25.17
 25.77
 32.48
 28.33
 24.09
Average common shareholders’ equity as a percentage of average assets11.04
 11.13
 10.70
 10.73
 11.11
Common equity tier 1 capital as a percentage of risk-weighted assets (f)11.14
 11.68
 11.09
 10.54
 n/a
Tier 1 capital as a percentage of risk-weighted assets (f)11.14
 11.68
 11.09
 10.54
 10.50
Common equity ratio10.60
 11.13
 10.68
 10.52
 10.70
Tangible common equity as a percentage of tangible assets (e)9.78
 10.32
 9.89
 9.70
 9.85
(a)Effective January 1, 2018, adoption of Topic 606 resulted in a change in presentation which records certain costs in the same category as the associated revenues. The effect of this change was to reduce noninterest income and expenses by $145 million for the year ended December 31, 2018.
(b)Effective January 1, 2015, contractual changes to a card program resulted in a change to the accounting presentation of the related revenues and expenses. The effect of this change was an increase of $177 million in 2015 to both noninterest income and noninterest expenses. Amounts prior to 2015 reflect revenues from this card program net of related noninterest expenses.
(c)Noninterest expenses included restructuring charges of $53 million, $45 million and $93 million in 2018, 2017 and 2016, respectively.
(d)The provision for income taxes for 2017 was impacted by a $107 million charge to adjust deferred taxes as a result of the enactment of the Tax Cuts and Jobs Act.
(e)See Supplemental Financial Data section for reconcilements of non-GAAP financial measures.

(f) Ratios calculated based on the risk-based capital requirements in effect at the time. The U.S. implementation
Table of the Basel III regulatory capital framework became effective on January 1, 2015, with transitional provisions.Contents
n/a - not applicable.


20182021 OVERVIEW AND 2019 OUTLOOK
Comerica Incorporated (the Corporation) is a financial holding company headquartered in Dallas, Texas. The Corporation's major business segments are the BusinessCommercial Bank, the Retail Bank and Wealth Management. The core businesses are tailored to each of the Corporation's three primary geographic markets: Michigan, California and Texas. Information about the activities of the Corporation's business segments is provided in Note 2322 to the consolidated financial statements.
As a financial institution, the Corporation's principal activity is lending to and accepting deposits from businesses and individuals. The primary source of revenue is net interest income, which is principally derived from the difference between interest earned on loans and investment securities and interest paid on deposits and other funding sources. The Corporation also provides other products and services that meet the financial needs of customers which generate noninterest income, the Corporation's secondary source of revenue. Growth in loans, deposits and noninterest income is affected by many factors, including economic conditions in the markets the Corporation serves, the financial requirements and economic health of customers, and the ability to add new customers and/or increase the number of products used by current customers. Success in providing products and services depends on the financial needs of customers and the types of products desired.
The accounting and reporting policies of the Corporation and its subsidiaries conform to generally accepted accounting principles (GAAP) in the United States (U.S.). The Corporation's consolidated financial statements are prepared based on the application of accounting policies, the most significant of which are described in Note 1 to the consolidated financial statements. When necessary, the Corporation uses reasonable assumptions to develop estimates that affect the consolidated results of operations. The most critical of these significant accounting policiesestimates are discussed in the “Critical Accounting Policies”Estimates” section of this financial review.
OVERVIEWFull-Year 2021 compared to Full-Year 2020
Net income increased $671 million to $1.2 billion, driven by a benefit in the provision for credit losses as credit metrics and the economic outlook improved from the height of the pandemic in 2020. Net income was $1.2 billion in 2018, an increase of $492 million, or 66 percent, comparedalso impacted by record noninterest income, partially offset by higher noninterest expenses driven by increased performance-related compensation and lower net interest income related to $743 million in 2017. Netthe continued low rate environment. Diluted net income per diluted common share was $7.20$8.35 in 20182021 compared to $4.14$3.43 in 2017, an increase of 74 percent.2020.
Average loans were $48.8decreased $2.5 billion, or 5 percent, to $49.1 billion, reflecting declines in 2018, an increase of $208 million compared to 2017. The increase in average loans primarily reflected increases inNational Dealer Services, Energy, Technology and Life Sciences, Mortgage Banker Finance and general Middle Market, partially offset by increases in Equity Fund Services, Entertainment and Environmental Services. Average Paycheck Protection Program (PPP) loans, which are reported within lines of business, decreased $200 million to $2.3 billion. Period-end PPP loans were $459 million at December 31, 2021, a decrease of $3.0 billion compared to $3.5 billion at December 31, 2020.
Average securities increased $2.3 billion, or 17 percent, to $15.7 billion, reflecting investment of a portion of excess liquidity into mortgage-backed securities.
Average deposits increased $12.6 billion, or 19 percent, to a record $77.7 billion, driven by customer profitability and capital markets activity, as well as National Dealer Services, partially offset by decreases in Corporate Bankingthe liquidity injected into the economy through fiscal and Energy.monetary actions.
Average noninterest-bearing deposits decreased $1.3increased $8.4 billion, or 225 percent, to $55.9 billion in 2018, with the largest decrease in general Middle Market driven by a $925 million decline in Municipalities. The decrease inwhile average interest-bearing deposits reflected a decrease of $1.8increased $4.3 billion, or 6 percent, in average noninterest-bearing deposits, partially offset by an increase of $449 million, or 2 percent, in average interest-bearing deposits.13 percent.
Net interest income was $2.4decreased $67 million to $1.8 billion, in 2018, an increase of $291 million, or 14 percent, compared to 2017, and the net interest margin increased 47decreased 33 basis points in 2018 to 3.582.21 percent, from 3.11 percent in 2017. Both increases were primarily driven by the net benefit from higher short-term rates.
The provision for credit losses decreased $75 million to a $1 million benefit in 2018, reflecting a $683 million decline in total criticized loans and a $41 million decrease in net credit-related charge-offs.
Noninterest income decreased $131 million to $976 million in 2018, reflecting a $118 million decrease due to a presentation change resulting from the adoption of a new accounting standard1 and a $20 million loss related to repositioning the securities portfolio in 2018.
Noninterest expenses decreased $66 million to $1.8 billion in 2018, reflecting a $118 million decrease due to a presentation change resulting from the adoption of a new accounting standard1, partially offset by an increase in salaries and benefits expense, mostly due to higher incentive compensation tied to performance.
The provision for income taxes decreased $191 million to $300 million in 2018. The decrease primarily reflected the impact of the 14-percentage-point decrease in the statutory federal tax rate in 2018 and a $120 million decrease due to discrete tax items,lower interest rates, partially offset by an increase in PPP income.
The provision for credit losses was a benefit of $384 million, compared to an expense of $537 million in 2020, reflecting strong credit quality and the economy re-opening as well as improvements in the economic forecast and in the Energy portfolio since the onset of the pandemic in 2020.
Noninterest income increased $122 million to $1.1 billion, reflecting increases in derivative income, card fees, commercial lending fees, fiduciary income and service charges on deposit accounts, partially offset by a decrease in brokerage fees.
Noninterest expenses increased $107 million to $1.9 billion, primarily due to increases in salaries and benefits expense, outside processing fee expense, consulting fees and litigation-related expenses, partially offset by decreases in non-salary pension expense, operational losses and FDIC insurance expense.
The provision for income taxes increased $198 million to $322 million, primarily due to higher pre-tax income.income, partially offset by higher discrete tax benefits.
The Corporation repurchased 14.8approximately 9.5 million shares of common stock during 2018 under the equity repurchase program and increased the cash dividend 69 percent to $1.84declared common dividends of $2.72 per share. All together, $1.6Altogether, $1.1 billion was returned to shareholders in 2018, an increase of $903 million, or 125 percent, compared to 2017.







1Effective January 1, 2018, the Corporation adopted Accounting Standards Codification ("ASC") Topic 606, "Revenue from Contracts with Customers," as a result, revenue from certain products is now presented net of costs. For further information, refer to Note 1 to the consolidated financial statements.

GROWTH IN EFFICIENCY AND REVENUE INITIATIVE
Since the GEAR Up initiative was launched in 2016, the Corporation consolidated 38 banking centers, implemented a new retirement program resulting in a significant reduction in retirement plan expense and reduced the number of full-time equivalent employees by over 900. Other expense reduction efforts included rationalizing and modernizing technology (including optimizing infrastructure platforms, process optimization and migrating certain applications to cloud-based systems), as well as consolidating office and operations space.common shareholders. Additionally, the Corporation completed a plan for an end-to-end credit redesign, which streamlines the credit process and increases the capacity of relationship managers to service clients. Revenue improvements were achieved through product enhancements, enhanced sales tools and training and improved customer analytics to drive opportunities. The impact of increases in short-term rates and the execution of GEAR Up initiatives helped lower the efficiency ratio to 53.6 percent for 2018, compared to 58.6 percent for 2017. Return on equity for 2018 increased to 15.8 percent, compared to 9.3 percent for 2017.
Restructuring activities were completed, resulting in cumulative pre-tax restructuring charges of $191 million from inception through December 31, 2018. For additional information regarding restructuring charges, refer to Note 22 to the consolidated financial statements.
2019 OUTLOOK
For full-year 2019 compared to full-year 2018, management expects the following, assuming a continuation of the current economic and rate environment:
Growth in average loans of 2 percent to 4 percent, reflecting increases in most lines of business.
Decline in average deposits of 1 percent to 2 percent from a decrease in non-interest-bearing deposits.
Growth in net interest income of 4 percent to 5 percent from the full-year net benefit of higher interest rates ($130 million to $150 million), growth in average loans and repositioning the securities portfolio, partially offset by higher average debt and lower interest recoveries.
Provision for credit losses of 15 basis points to 25 basis points and net charge-offs to remain low.
Noninterest income higher by 2 percent to 3 percent, benefiting from growth in card fees and fiduciary income, partially offset by lower service charges on deposit accounts and lower derivative income.
Noninterest expenses lower by 3 percent, reflecting the end of restructuring charges from the GEAR Up initiatives ($53declared $23 million in full-year 2018), FDIC insurance expense lower by $16 million from the discontinuancepreferred dividends.
F-3

Table of the surcharge, as well as lower compensation and pension expense, partially offset by higher outside processing expenses in line with growing revenue, technology expenditures and typical inflationary pressures.Contents
Noninterest expenses excluding restructuring expenses expected to be stable.
Lower compensation driven by executive incentive compensation, partially offset by merit increases.
Income tax expense to be approximately 23 percent of pre-tax income, excluding any tax impact from employee stock transactions.
Full-year 2018 included discrete tax benefits of $48 million.
Common equity Tier 1 capital ratio target of 9.5 percent to 10 percent through continued return of excess capital.



RESULTS OF OPERATIONS
The following provides a comparative discussion of the Corporation's consolidated results of operations for 20182021 compared to 2017.2020. A comparative discussion of results for 20172020 compared to 20162019 is provided atin the end"Results of this section. For a discussionOperations" section beginning on page F-5 of the Critical Accounting Policies that affectCorporation's 2020 Annual Report.
Analysis of Net Interest Income
(dollar amounts in millions)
Years Ended December 31202120202019
Average
Balance
InterestAverage
Rate
Average
Balance
InterestAverage
Rate
Average
Balance
InterestAverage
Rate
Commercial loans (a)$29,283 $1,009 3.45 %$32,144 $1,099 3.42 %$32,053 $1,544 4.81 %
Real estate construction loans3,609 123 3.40 3,912 147 3.76 3,325 184 5.54 
Commercial mortgage loans10,610 305 2.88 9,839 320 3.25 9,170 447 4.88 
Lease financing (b)596 (2)(0.37)594 20 3.37 557 19 3.44 
International loans1,063 33 3.14 1,028 37 3.61 1,019 52 5.13 
Residential mortgage loans1,813 55 3.04 1,905 66 3.45 1,929 74 3.85 
Consumer loans2,109 71 3.34 2,209 84 3.80 2,458 119 4.85 
Total loans (c)49,083 1,594 3.25 51,631 1,773 3.44 50,511 2,439 4.83 
Mortgage-backed securities (d)11,747 224 1.92 9,820 221 2.30 9,348 230 2.44 
U.S. Treasury securities (e)3,977 56 1.42 3,612 70 1.98 2,772 67 2.43 
Total investment securities15,724 280 1.79 13,432 291 2.21 12,120 297 2.44 
Interest-bearing deposits with banks18,729 27 0.14 10,203 28 0.27 3,360 69 2.05 
Other short-term investments183  0.22 153 0.72 143 1.26 
Total earning assets83,719 1,901 2.27 75,419 2,093 2.79 66,134 2,807 4.24 
Cash and due from banks1,006 878 887 
Allowance for loan losses(729)(900)(667)
Accrued income and other assets6,156 5,749 5,134 
Total assets$90,152 $81,146 $71,488 
Money market and interest-bearing checking deposits$31,063 18 0.06 $26,798 72 0.27 $23,417 214 0.91 
Savings deposits3,018  0.01 2,454 0.03 2,166 0.05 
Customer certificates of deposit2,110 4 0.21 2,626 27 1.02 2,522 30 1.18 
Other time deposits   17 — 2.00 705 17 2.44 
Foreign office time deposits49  0.08 90 0.42 27 — 1.39 
Total interest-bearing deposits36,240 22 0.06 31,985 101 0.31 28,837 262 0.91 
Short-term borrowings2   314 0.32 369 2.39 
Medium- and long-term debt3,035 35 1.11 6,549 80 1.23 6,955 197 2.82 
Total interest-bearing sources39,277 57 0.14 38,848 182 0.47 36,161 468 1.29 
Noninterest-bearing deposits41,441 33,053 26,644 
Accrued expenses and other liabilities1,481 1,554 1,375 
Shareholders’ equity7,953 7,691 7,308 
Total liabilities and shareholders’ equity$90,152 $81,146 $71,488 
Net interest income/rate spread$1,844 2.13 $1,911 2.32 $2,339 2.95 
Impact of net noninterest-bearing sources of funds 0.08 0.22 0.59 
Net interest margin (as a percentage of average earning assets)  2.21 %  2.54 %  3.54 %
(a)Included Paycheck Protection Program (PPP) loans with average balances of $2.3 billion and $2.5 billion, interest income of $111 million and $63 million and average yields of 4.77% and 2.49% for the consolidated resultsyears ended December 31, 2021 and December 31, 2020, respectively. Period-end net unamortized deferred fees totaled $10 million and $55 million at December 31, 2021 and December 31, 2020, respectively.
(b)The year ended December 31, 2021 included residual value adjustments totaling $20 million, which impacted the average yield on loans by 4 basis points.
(c)Nonaccrual loans are included in average balances reported and in the calculation of operations, seeaverage rates.
(d)Average balances included $61 million, $213 million and $(36) million of unrealized gains and losses for the "Critical Accounting Policies" sectionyears ended December 31, 2021, 2020 and 2019, respectively; yields calculated gross of this financial review.these unrealized gains and losses.
ANALYSIS OF NET INTEREST INCOME(e)Average balances included $27 million, $90 million and $30 million of unrealized gains for the years ended December 31, 2021, 2020 and 2019, respectively; yields calculated gross of these unrealized gains.


F-4

(dollar amounts in millions)       
Years Ended December 312018 2017 2016
 
Average
Balance
Interest
Average
Rate
 
Average
Balance
Interest
Average
Rate
 
Average
Balance
Interest
Average
Rate
Commercial loans$30,534
$1,416
4.64% $30,415
$1,162
3.82% $31,062
$1,008
3.25%
Real estate construction loans3,155
164
5.21
 2,958
124
4.18
 2,508
91
3.63
Commercial mortgage loans9,131
429
4.69
 9,005
358
3.97
 8,981
314
3.49
Lease financing470
18
3.82
 509
13
2.63
 684
18
2.64
International loans1,021
51
4.97
 1,157
47
4.07
 1,367
50
3.63
Residential mortgage loans1,983
75
3.77
 1,989
74
3.70
 1,894
71
3.76
Consumer loans2,472
109
4.41
 2,525
94
3.70
 2,500
83
3.32
Total loans (a)48,766
2,262
4.64
 48,558
1,872
3.85
 48,996
1,635
3.34
            
Mortgage-backed securities9,099
214
2.28
 9,330
202
2.17
 9,356
203
2.19
Other investment securities2,711
51
1.86
 2,877
48
1.66
 2,992
44
1.51
Total investment securities11,810
265
2.19
 12,207
250
2.05
 12,348
247
2.02
            
Interest-bearing deposits with banks4,700
91
1.94
 5,443
60
1.09
 5,099
26
0.51
Other short-term investments134
1
0.96
 92

0.64
 102
1
0.61
Total earning assets65,410
2,619
3.99
 66,300
2,182
3.29
 66,545
1,909
2.88
            
Cash and due from banks1,135
   1,209
   1,146
  
Allowance for loan losses(695)   (728)   (730)  
Accrued income and other assets4,874
   4,671
   4,782
  
Total assets$70,724
   $71,452
   $71,743
  
            
Money market and interest-bearing checking deposits$22,378
111
0.50
 $21,585
33
0.15
 $22,744
27
0.11
Savings deposits2,199
1
0.04
 2,133

0.02
 2,013

0.02
Customer certificates of deposit2,092
10
0.46
 2,471
9
0.36
 3,200
13
0.40
Foreign office time deposits (b)25

1.19
 56

0.64
 33

0.35
Total interest-bearing deposits26,694
122
0.46
 26,245
42
0.16
 27,990
40
0.14
Short-term borrowings62
1
1.90
 277
3
1.14
 138

0.45
Medium- and long-term debt5,842
144
2.42
 4,969
76
1.51
 4,917
72
1.45
Total interest-bearing sources32,598
267
0.82
 31,491
121
0.38
 33,045
112
0.34
            
Noninterest-bearing deposits29,241
   31,013
   29,751
  
Accrued expenses and other liabilities1,076
   996
   1,273
  
Total shareholders’ equity7,809
   7,952
   7,674
  
Total liabilities and shareholders’ equity$70,724
   $71,452
   $71,743
  
            
Net interest income/rate spread $2,352
3.17
  $2,061
2.91
  $1,797
2.54
            
Impact of net noninterest-bearing sources of funds  0.41
   0.20
   0.17
Net interest margin (as a percentage of average earning assets)  3.58%   3.11%   2.71%
(a)Nonaccrual loans are included in average balances reported and in the calculation of average rates.
(b)Includes substantially all deposits by foreign depositors; deposits are primarily in excess of $100,000.

Rate/Volume Analysis

(in millions)
Years Ended December 312021/20202020/2019
Decrease
Due to Rate
Increase
(Decrease)
Due to 
Volume (a)
Net
(Decrease)
Increase
Decrease
Due to Rate
Increase
(Decrease)
Due to 
Volume (a)
Net
Increase
(Decrease)
Interest Income:
Commercial loans$(1)$(89)$(90)$(447)$$(445)
Real estate construction loans(14)(10)(24)(59)22 (37)
Commercial mortgage loans(37)22 (15)(149)22 (127)
Lease financing(22) (22)— 
International loans(5)1 (4)(15)— (15)
Residential mortgage loans(8)(3)(11)(7)(1)(8)
Consumer loans(10)(3)(13)(26)(9)(35)
 Total loans(97)(82)(179)(703)37 (666)
Mortgage-backed securities(37)40 3 (14)(9)
U.S. Treasury securities(20)6 (14)(12)15 
 Total investment securities(57)46 (11)(26)20 (6)
Interest-bearing deposits with banks(13)12 (1)(59)18 (41)
Other short-term investments(1) (1)(1)— (1)
Total interest income(168)(24)(192)(789)75 (714)
Interest Expense:
Money market and interest-bearing checking deposits(56)2 (54)(151)(142)
Savings deposits(1) (1)— — — 
Customer certificates of deposit(22)(1)(23)(4)(3)
Other time deposits   (16)(1)(17)
Foreign office time deposits(1) (1)— 
Total interest-bearing deposits(80)1 (79)(171)10 (161)
Short-term borrowings (1)(1)(8)— (8)
Medium- and long-term debt(7)(38)(45)(110)(7)(117)
Total interest expense(87)(38)(125)(289)(286)
Net interest income$(81)$14 $(67)$(500)$72 $(428)

(a)Rate/volume variances are allocated to variances due to volume.
RATE/VOLUME ANALYSIS
(in millions)       
Years Ended December 312018/2017 2017/2016
 
Increase
Due to Rate
Increase
(Decrease)
Due to 
Volume (a)
Net
Increase
(Decrease)
 
Increase
(Decrease)
Due to Rate
Increase
(Decrease)
Due to 
Volume (a)
Net
Increase
(Decrease)
Interest Income:             
Commercial loans$248
 $6
 $254
  $179
 $(25) $154
 
Real estate construction loans30
 10
 40
  14
 19
 33
 
Commercial mortgage loans65
 6
 71
  43
 1
 44
 
Lease financing6
 (1) 5
  
 (5) (5) 
International loans11
 (7) 4
  6
 (9) (3) 
Residential mortgage loans1
 
 1
  (1) 4
 3
 
Consumer loans17
 (2) 15
  10
 1
 11
 
 Total loans378
 12
 390
  251
 (14) 237
 
              
Mortgage-backed securities12
 
 12
  (1) 
 (1) 
Other investment securities5
 (2) 3
  5
 (1) 4
 
 Total investment securities17
 (2) 15
  4
 (1) 3
 
              
Interest-bearing deposits with banks46
 (15) 31
  30
 4
 34
 
Other short-term investments1
 
 1
  
 (1) (1) 
Total interest income442
 (5) 437
  285
 (12) 273
 
              
Interest Expense:             
Money market and interest-bearing checking deposits74
 4
 78
  8
 (2) 6
 
Savings deposits1
 
 1
  
 
 
 
Customer certificates of deposit3
 (2) 1
  (1) (3) (4) 
Total interest-bearing deposits78
 2
 80
  7
 (5) 2
 
              
Short-term borrowings2
 (4) (2)  1
 2
 3
 
Medium- and long-term debt50
 18
 68
  23
 (19) 4
 
Total interest expense130
 16
 146
  31
 (22) 9
 
              
Net interest income$312
 $(21) $291
  $254
 $10
 $264
 
(a)
Rate/volume variances are allocated to variances due to volume.
NET INTEREST INCOME
Net interest income is the difference between interest earned on assets and interest paid on liabilities. Gains and losses related to risk management interest rate swaps that convert fixed rate debt to a floating rate and qualify as fair value hedges are included within interest expense on medium- and long-term debt. Additionally, the portion of gains and losses on risk management interest expenserate swaps that convert variable-rate loans to fixed rates through cash flow hedges that relate to the earnings effect of the hedged item.loans during the period are included in loan interest income. Refer to the Analysis of Net Interest Income and the Rate/Volume Analysis tables above for an analysis of net interest income for the years ended December 31, 2018, 20172021, 2020 and 20162019 and details of the components of the change in net interest income for 20182021 compared to 2017 and 20172020 as well as 2020 compared to 2016.2019.
Net interest income was $2.4$1.8 billion in 2018, an increasefor the year ended December 31, 2021, a decrease of $291$67 million compared to 2017.the year ended December 31, 2020. The increasedecrease in net interest income primarilyreflected lower yields on earning assets and a decrease in loan balances, partially offset by an increase in PPP income and lower rates paid on deposits and debt. Net interest margin was 2.21 percent for the year ended December 31, 2021, a decrease of 33 basis points compared to 2.54 percent for the comparable period in 2020. The decrease in net interest margin reflected the net benefitdecline in the average 30-day LIBOR, from higher short-term rates. 0.52 percent for the year ended December 31, 2020 to 0.10 percent for the year ended December 31, 2021.
Average earning assets decreased $890 million, primarily reflecting decreasesincreased $8.3 billion, due to increases of $743 million$8.5 billion in interest-bearing deposits with banks and $397 million$2.3 billion in average investment securities, primarily due to unrealized losses, partially offset by a $208$2.5 billion decrease in loans. Average interest-bearing funding sources increased $429 million, primarily reflecting a $4.3 billion increase in average loans.
The net interest margin increased 47 basis pointsinterest-bearing deposits, partially offset by a $3.5 billion decrease in 2018 to 3.58 percent, from 3.11 percent in 2017, primarily reflecting the net benefit from higher short-term rates.medium- and long-term debt.
The Corporation utilizes various asset and liability management strategies to manage net interest income exposure to interest rate risk. Refer to the “Market and Liquidity Risk” section of this financial review for additional information regarding the Corporation's asset and liability management policies and the “Balance Sheet and Capital Funds Analysis” section for further discussion on changes in earning assets and interest-bearing liabilities.
PROVISION FOR CREDIT LOSSES
F-5

Provision for Credit Losses
The provision for credit losses was a benefit of $1$384 million in 2018,for the year ended December 31, 2021, compared to a provisionan expense of $74$537 million for the year ended December 31, 2020. The change in2017. The provision for credit losses includes both the provision for loan lossesreflected strong credit quality and the provision for credit losses on lending-related commitments.

The provision for loan losses is recorded to maintainre-opening of the allowance for loan losses at the level deemed appropriate by the Corporation to cover probable credit losses inherenteconomy as well as improvements in the portfolio. The provision for loan losses was $11 millioneconomic forecast and in 2018, a decreasethe Energy portfolio since the onset of $62 million compared to $73 millionthe pandemic in 2017, primarily resulting from improved credit quality in most lines of business, reflected by lower net loan charge-offs and criticized loans.2020. Net loan charge-offs in 2018 decreased $41 million to $51recoveries for the year ended December 31, 2021 were $10 million, or 0.110.02 percent of average total loans, compared to $92net charge-offs of $196 million, or 0.190.38 percent in 2017. The decrease primarily reflected lower charge-offs in Energy, Technology and Life Sciences as well as Corporate Banking. Criticizedof average total loans, decreased $683 million to $1.5 billion in 2018.
The provision for credit losses on lending-related commitments is recorded to maintain reserves at the level deemed appropriateyear ended December 31, 2020. This decline was largely driven by the Corporation to cover probable credit losses inherent in lending-related commitments. The provision for credit losses on lending-related commitments was a benefit of $12 million in 2018, a decrease of $13 million compared to a provision of $1$173 million in 2017. The increaseEnergy net charge-offs to $48 million in net loan recoveries for the provision benefit primarily reflected a decrease in commercial commitments, primarily in Energy. There were no lending-related commitment charge-offs in 2018 and 2017.year ended December 31, 2021.
For further discussionAn analysis of the allowance for loan losses and the allowance for credit losses on lending-related commitments, includingand a summary of nonperforming assets are presented under the methodology used"Credit Risk" subheading in the determination"Risk Management" section of this financial review. Further information about the allowances and an analysisadoption of the changesCECL is presented in the allowances, refer to Note 1 to the consolidated financial statementsstatements.
Noninterest Income
(in millions)
Years Ended December 31202120202019
Card fees$298 $270 $257 
Fiduciary income231 209 206 
Service charges on deposit accounts195 185 203 
Commercial lending fees104 77 91 
Derivative income (a)99 67 76 
Bank-owned life insurance43 44 41 
Letter of credit fees40 37 38 
Brokerage fees14 21 28 
Net securities losses — (7)
Other noninterest income (a), (b)99 91 77 
Total noninterest income$1,123 $1,001 $1,010 
(a)Beginning in first quarter 2021, the Corporation reported customer derivative income, previously a component of other noninterest income, and foreign exchange income as a combined item captioned by derivative income on the Consolidated Statements of Income. Prior periods have been adjusted to conform to this presentation, and the "Credit Risk" section of this financial review.changes in presentation do not impact total noninterest income.
PRESENTATION CHANGES(b)The table below provides further details on certain categories included in other noninterest income.
Noninterest income and noninterest expenses for 2018 reflect certain presentation changes resulting from the adoption of ASC Topic 606, "Revenue from Contracts with Customers," (Topic 606), effective January 1, 2018. These changes primarily impactedincreased $122 million to $1.1 billion. Increases in derivative income, card fees, commercial lending fees, fiduciary income and service charges on deposit accounts in noninterest income, fully offset by the impact to outside processing fee expense in noninterest expenses. See Note 1 to the consolidated financial statements for further details on the adoption of Topic 606. The table below summarizes the proforma effects to 2017.
(in millions)Reported AmountsProforma EffectsProforma Amounts (a)
Year Ended December 31, 2017
Card fees$333
$(113)$220
Service charges on deposit accounts227
(5)222
Total noninterest income1,107
(118)989
    
Outside processing fee expense366
(118)248
Total noninterest expenses1,860
(118)1,742
(a)The Corporation believes proforma noninterest income and noninterest expenses (each a non-GAAP measure) provide a greater understanding of ongoing operations and enhances comparability of results with 2017.

NONINTEREST INCOME
(in millions)  
Years Ended December 31201820172016
Card fees$244
 $333
 $303
 
Service charges on deposit accounts211
 227
 219
 
Fiduciary income206
 198
 190
 
Commercial lending fees85
 85
 89
 
Foreign exchange income47
 45
 42
 
Letter of credit fees40
 45
 50
 
Bank-owned life insurance39
 43
 42
 
Brokerage fees27
 23
 19
 
Net securities losses(19) 
 
 
Other noninterest income (a)96
 108
 97
 
Total noninterest income$976
 $1,107
 $1,051
 
(a)The table below provides further details on certain categories included in other noninterest income.
Noninterest income decreased $131 million to $976 million in 2018, compared to $1.1 billion in 2017. The change in noninterest income included the Topic 606 proforma reduction of $118 million to 2017, a $20 million loss due to the repositioning of the securities portfolio and a $10 million reduction in deferred compensation asset returns (offset in noninterest expenses). Excluding these items, noninterest income increased $17 million in 2018. The increase was primarily due to increases in card fees (proforma) and fiduciary income, partlywere partially offset by a decrease in service charges on deposit accounts (proforma). For further information about the investmentbrokerage fees. Noninterest income was also impacted by an increase in other noninterest income, driven by higher income from principal investing and warrants, partially offset by market valuation adjustments recorded in securities portfolio, refer to "Balance Sheet and Capital Funds Analysis" section in this financial review.

trading income.
Card fees consist primarily of interchange and other fee income earned on government prepaid card, commercial card, debit/Automated Teller Machine (ATM) card and merchant payment processing services. Card fees increased $24$28 million, (proforma), or 1110 percent, to $244 million in 2018, compared to $220 million (proforma) in 2017. The increase in 2018 was primarily due to volume-drivendriven by volume increases in both merchant payment processing services and government cards mostly related to additional stimulus payments resulting in higher interchange revenue. Additionally, both commercial and consumer card programs.volumes increased as social distancing restrictions were relaxed.
Fiduciary income, consisting of fees and commissions from asset management, custody, recordkeeping, investment advisory and other services provided primarily to personal and institutional trust customers, increased $22 million, or 11 percent. The increase was driven by new sales and higher market-based fees as well as increased investment advisory fees, partially offset by decreased institutional trust fees related to lower rates.
Service charges on deposit accounts consist primarily of charges on retail and business accounts, including fees for treasury management services. Service charges on deposit accounts decreased $11increased $10 million, (proforma)or 6 percent, as volume returned to pre-pandemic levels, leading to increased commercial activity.
Commercial lending fees include fees assessed on the unused portion of lines of credit (unused commitment fees), syndication agent fees and loan servicing fees. These fees increased $27 million, or 535 percent, to $211 million in 2018, compared to $222 million (proforma) in 2017. The decrease in service charges on deposit accounts includedreflecting higher earnings credit allowances provided on customer deposit balancessyndication agent fees due to increasesgrowth in short-term interest rates.the average size and number of deals, as well as increased loan commitment fees related to lower utilization rates on lines of credit.
FiduciaryDerivative income consists of feesnet gains and commissions from asset management, custody, recordkeeping, investment advisory and other services providedlosses recognized on customer-initiated derivative instruments, net of the impact of offsetting positions. Derivative income increased $32 million, or 47 percent, primarily due to personal and institutional trust customers. Thesefavorable credit valuation adjustments, partially offset by a decrease in interest rate swap activity.
F-6

Brokerage fees are based oncommissions earned for facilitating securities transactions for customers as well as other brokerage services provided, assets under management and assets under administration. Fluctuationsprovided. Brokerage fees decreased $7 million, or 33 percent, primarily due to lower money market funds fee revenue as spreads remained compressed resulting from a decline in the market values of the underlying assets managed or administered, which include both equity and fixed income securities, and net asset flows within client accounts impact fiduciary income. Fiduciaryfederal funds rate since 2020.
Other noninterest income increased $8 million, or 48 percent, to $206 million in 2018, compared to $198 million in 2017. The increase in 2018 was primarilyas detailed below, driven by the favorable impacthigher income from principal investing and warrants related to warrant exercises, partially offset by lower securities trading income due to fair value adjustments on fees from average market value increases and net positive asset flows for trust as well as investment advisory services.previously converted warrants.
Other noninterest income decreased $12 million, or 11 percent, to $96 million in 2018, compared to $108 million in 2017, driven by a $10 million decrease in deferred compensation asset returns (offset in noninterest expenses) and smaller changes in various categories as illustrated in the following table.
(in millions)
Years Ended December 31202120202019
Income from principal investing and warrants$34 $$
Deferred compensation asset returns (a)14 16 
Investment banking fees11 11 
Net gain on sale of business (b) — 
Securities trading income (c)(1)23 
All other noninterest income41 38 40 
Other noninterest income$99 $91 $77 
(in millions)     
Years Ended December 31 201820172016
Customer derivative income $26
 $26
 $27
 
Insurance commissions 10
 8
 10
 
Investment banking fees 9
 9
 7
 
Securities trading income 8
 8
 6
 
Income from principal investing and warrants 4
 6
 7
 
Risk management hedge ineffectiveness

 
 1
 (2) 
Deferred compensation asset returns (a) (2) 8
 3
 
All other noninterest income 41
 42
 39
 
Other noninterest income $96
 $108
 $97
 
(a)(a)    Compensation deferred by the Corporation's officers and directors is invested based on investment selections of the officers and directors. Income earned on these assets is reported in noninterest income and the offsetting change in deferred compensation plan liabilities is reported in salaries and benefits expense.

NONINTEREST EXPENSES
(in millions)  
Years Ended December 31201820172016
Salaries and benefits expense$1,009
 $961
(a)$989
(a)
Outside processing fee expense255
 366
 336
 
Net occupancy expense152
 154
 157
 
Software expense125
 126
 119
 
Restructuring charges53
 45
 93
 
Equipment expense48
 45
 53
 
FDIC insurance expense42
 51
 54
 
Advertising expense30
 28
 21
 
Other noninterest expenses80
 84
(a)108
(a)
Total noninterest expenses$1,794
 $1,860
 $1,930
 
(a)Prior period amounts restated to reflect the adoption of Accounting Standard Update (ASU) 2017-07, "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost," effective January 1, 2018. For further information, refer to Note 1 to the consolidated financial statements.
Noninterest expenses decreased $66 million to $1.8 billion in 2018, compared to 2017. The change in noninterest expenses included the Topic 606 proforma reduction of $118 million to 2017 and an $8 million increase in restructuring charges. Excluding these items, noninterest expenses increased $44 million in 2018 primarily due to increases in salaries and benefits expense.
(b)    Gain on sale of the Corporation's Health Savings Account business.
(c)    Includes changes in value of shares obtained through exercise of warrants.
Noninterest Expenses
(in millions)
Years Ended December 31202120202019
Salaries and benefits expense$1,133 $1,019 $1,020 
Outside processing fee expense266 242 264 
Occupancy expense161 156 154 
Software expense155 154 117 
Equipment expense50 49 50 
Advertising expense35 35 34 
FDIC insurance expense22 33 23 
Other noninterest expenses (a)39 66 75 
Total noninterest expenses (a)$1,861 $1,754 $1,737 
(a)The years ended December 31, 2020 and 2019 have been recast to reflect the retrospective application of the Corporation's election to change the accounting method for certain components of expense as well asrelated to the defined benefit pension plan, resulting in a decrease of $30 million and $6 million, respectively. See Note 1 to the consolidated financial statements for further information and impacts of the change in accounting policy.
Noninterest expenses increased $107 million to $1.9 billion, primarily due to higher salaries and benefits expense, outside processing fee expense, (proforma), partlyconsulting fees and litigation-related expenses, partially offset by decreases in non-salary pension expense, operational losses and FDIC insurance expense and other noninterest expenses.expense.
Salaries and benefits expense increased $48$114 million, or 511 percent, to $1.0 billion in 2018, compared to $961 million in 2017. The increase in salaries and benefits expense wasreflecting higher performance-based incentive compensation (including share-based compensation) driven by higher share-based and executive incentive compensation tied

tostrong financial performance as well as merit increasesresults, staff insurance expense and technology-related labor costs, partially offset by decreases in workforce and deferred compensation expense (offset in noninterest income).contract labor.
Outside processing fee expense increased $7$24 million, (proforma), or 310 percent, to $255 million in 2018, compared to $248 million (proforma) in 2017, primarily due to data processing support for PPP loans and volume-related increases in merchant payment and government card processing expenses, which are tied to revenue-generating activities, including government card programs and merchant payment processing services, partially offset by $3 million of reduced expenses due to the wind down of a retirement savings program in 2018.
Restructuring charges associated with the implementation of the GEAR Up initiative increased $8 million, or 18 percent, to $53 million in 2018, compared to $45 million in 2017, including increases of $11 million in technology costs and $2 million in facilities costs, partially offset by a $5 million decrease in other restructuring costs such as professional and legal fees as well as contract termination fees. For further information about restructuring charges, refer to Note 22 to the consolidated financial statements.fee revenue.
FDIC insurance expense decreased $9$11 million, or 1733 percent, to $42 million in 2018, compared to $51 million in 2017, primarily due to the completion of FDIC surcharges in third quarter 2018 as well as lower risk-based assessment rates.fees.
Other noninterest expenses decreased $4$27 million, or 441 percent, to $80driven by declines of $34 million in 2018, compared to $84 million in 2017, driven by decreases of $6non-salary pension expense and $18 million in operational losses and $5 millionrelated to several one-time events in state business taxes,2020, partially offset by $6increases of $14 million of net gains recognized on sales of assets in 2017 that did not repeat. The decreaseconsulting fees and $10 million in state business taxes was due to tax refunds obtained in 2018.litigation-related expenses.
INCOME TAXES AND RELATED ITEMSIncome Taxes and Related Items
The provision for income taxes was $300$322 million in 2018,2021, compared to $491$124 million in 2017.2020. The $191$198 million decreaseincrease in the provision for income taxes in 2018, compared to 2017, primarily reflected the impact of a 14-percentage-point decrease in federal statutory tax rate in 2018 resulting from the Tax Cuts and Jobs Act and a $120 million decrease in discrete tax items, from a $72 million charge in 2017 to a benefit of $48 million in 2018,higher pre-tax income partially offset by the tax effect of a $301$7 million increase in pre-tax income. The discrete tax charge in 2017 was primarily due to a $107 million adjustment to deferred taxesbenefits resulting from the Tax Cutsadjustments to annual federal filings, resolution of certain state matters and Jobs Act, partially offset by tax benefits of $35 million from employee stock transactions. The discrete tax benefit in 2018 primarily resulted from a review
F-7

Net deferred tax assets were $166$9 million at December 31, 2018,2021, compared to $141$3 million at December 31, 2017.2020. Refer to Note 18 to the consolidated financial statements for information about the components of net deferred tax assets. Deferred tax assets of $302$344 million were evaluated for realization and it was determined that a valuation allowance of $3$5 million related tofor federal foreign tax credits and certain state net operating loss (NOL) carryforwards was needed at both December 31, 2018 and 2017. These conclusions were based on available evidence of projected future reversals of existing taxable temporary differences, assumptions made regarding future events and, when applicable, state loss carryback capacity.
2017 RESULTS OF OPERATIONS COMPARED TO 2016
Net interest income was $2.1 billion in 2017, an increase of $264 million2021, compared to 2016. The increase in net interest income primarily reflecteda valuation allowance of $3 million for certain state NOL carryforwards at December 31, 2020. For further information on the net benefit from higher short-term rates and elevated interest recoveries, partially offset by one fewer day in 2017. Average earningCorporation’s valuation policy for deferred tax assets, decreased $245 million, primarily reflecting decreasesrefer to Note 1.
F-8

Table of $438 million in average loans and $141 million in average investment securities, partially offset by an increase of $344 million in interest-bearing deposits with banks.Contents
The net interest margin increased 40 basis points in 2017 to 3.11 percent, primarily reflecting the net benefit from higher rates. The "Analysis of Net Interest Income" and "Rate/Volume Analysis" tables under the "Net Interest Income" subheading in this section above provide an analysis of net interest income for 2017 and 2016 and details the components of the change in net interest income for 2017 compared to 2016.
The provision for credit losses, which includes both the provision for loan losses and the provision for credit losses on lending-related commitments, was $74 million in 2017, a decrease of $174 million compared to 2016. Net loan charge-offs in 2017 decreased $54 million to $92 million, or 0.19 percent of average total loans, primarily reflecting lower Energy charge-offs. There were no lending-related commitment charge-offs in 2017, compared to $11 million in 2016, primarily reflecting improved credit quality.
Noninterest income increased $56 million, or 5 percent, to $1.1 billion in 2017 compared to 2016, partially driven by the GEAR Up initiative. Card fees increased $30 million, or 10 percent, to $333 million in 2017, primarily due to volume-driven increases from merchant payment processing services, including new customers, and government card programs. Service charges on deposit accounts increased $8 million, or 4 percent, to $227 million in 2017, primarily reflecting an increase in commercial service charges. Fiduciary income increased $8 million, or 5 percent, to $198 million in 2017, primarily driven by the favorable impact on fees from market value increases and net asset inflows. Other noninterest income increased $11 million, or 11 percent, to $108 million in 2017, driven by small changes in various categories of other noninterest income. Refer to the table provided

under the "Noninterest Income" subheading previously in this section for details of certain categories included in other noninterest income.
Noninterest expenses decreased $70 million to $1.9 billion in 2017, compared to 2016. Excluding restructuring charges related to the GEAR Up initiative, noninterest expenses decreased $22 million in 2017. Salaries and benefits expense decreased $28 million, or 3 percent, to $961 million in 2017, primarily driven by the GEAR Up initiative, partially offset by an increase in performance-based incentive compensation and a one-time bonus of $1,000 to approximately 4,500 non-officer employees, as well as the impact of merit increases. Outside processing fee expense increased $30 million, or 9 percent, to $366 million in 2017, primarily tied to revenue-generating activities, including expenses related to increases in merchant payment processing services and government card programs, as well as increases in other outsourced services. Restructuring charges associated with the implementation of the GEAR Up initiative decreased $48 million to $45 million in 2017, including decreases of $42 million in employee costs, $19 million in other restructuring costs and $13 million in facilities costs, partially offset by an increase of $26 million in technology costs. Equipment expense decreased $8 million, or 15 percent, to $45 million in 2017, primarily driven by favorable price renegotiations and a reduction in equipment depreciation expense, in part reflecting careful management of fully depreciated assets. Software expense increased $7 million, or 6 percent, to $126 million in 2017, primarily reflecting continued investment in the Corporation's technology infrastructure. Advertising expense increased $7 million to $28 million in 2017, primarily due to increased marketing expenses tied to new initiatives as well as an increase in sponsorship expenses.
The provision for income taxes increased $298 million to $491 million in 2017, primarily due to an increase in pre-tax income of $564 million and the $107 million charge to adjust deferred taxes resulting from the Tax Cuts and Jobs Act, partially offset by a $35 million tax benefit from employee stock transactions.

STRATEGIC LINES OF BUSINESS
The Corporation has strategically aligned its operations into three major business segments: the BusinessCommercial Bank, the Retail Bank and Wealth Management. These business segments are differentiated based uponon the type of customer and the related products and services provided. In addition to the three major business segments, the Finance Division is also reported as a segment. The Other category includes items not directly associated with thesethe business segments or the Finance segment. The performance of the business segments is not comparable with the Corporation's consolidated results and is not necessarily comparable with similar information for any other financial institution. Additionally, because of the interrelationships of the various segments, the information presented is not indicative of how the segments would perform if they operated as independent entities. Market segment results are also provided for the Corporation's three primary geographic markets: Michigan, California and Texas. In addition to the three primary geographic markets, Other Markets is also reported as a market segment. Note 2322 to the consolidated financial statements describes the Corporation's segment reporting methodology as well as the business activities of each business segment and presents financial results of thesethe business segments for the years ended December 31, 2018, 20172021, 2020 and 2016.2019.
The Corporation's management accounting system assigns balance sheet and income statement items to each segment using certain methodologies, which are regularly reviewed and refined. These methodologies may be modified as the management accounting system is enhanced and changes occur in the organizational structure and/or product lines. During 2018, the Small Business component was reclassified from Retail Bank to Business Bank. Results in all periods presented have been adjusted to reflect the change in organizational structure.
Net interest income for each segment reflects the interest income generated by earning assets less interest expense on interest-bearing liabilities plus the net impact from associated internal funds transfer pricing (FTP). The FTP methodology allocates credits to each business segment for deposits and other funds provided as well as charges for loans and other assets being funded. FTP crediting rates on deposits and other funds provided reflect the long-term value of deposits and other funding sources based on their implied maturities. Due to the longer-term nature of implied maturities, FTP crediting rates are generally less volatile than changes in interest rates observed in the market. FTP charge rates for funding loans and other assets reflect a matched cost of funds based on the pricing and duration characteristics of the assets. As a result of applying matched funding, interest revenue for each segment resulting from loans and other assets is generally not impacted by changes in interest rates. Therefore, net interest income for each segment primarily reflects the volume of loans and other earning assets at the spread over the matched cost of funds, as well as the volume of deposits at the associated FTP impactscrediting rates. Due to the impact of loan and deposit levels. Businesslower interest rates, business segments, that generateparticularly those focused on generating deposits, benefited from higherwere impacted by lower FTP crediting rates on deposits during 2018 compared to the prior year. As overall market rates increased,Similarly, FTP charges for funding loans increased for asset-generatingdecreased in 2021.
The following table presents net income (loss) by business segments in the year ended December 31, 2018 compared to the prior year.segment.
(dollar amounts in millions)
Years Ended December 31202120202019
Commercial Bank$1,329 89 %$668 90 %$1,022 82 %
Retail Bank43 3 — 85 
Wealth Management124 8 78 10 141 11 
1,496 100 %748 100 %1,248 100 %
Finance(331)(253)(57)
Other3 11 
Total$1,168  $497  $1,202 
F-9

The following sections present a summary of the performance of each of the Corporation's business and market segments for 2021 compared to 2020.
Commercial Bank
Years Ended December 31,Percent
Change
(dollar amounts in millions)20212020Change
Earnings summary:
Net interest income$1,577$1,607$(30)(2)%
Provision for credit losses(346)495(841)n/m
Noninterest income66355510819
Noninterest expenses873815587
Provision for income taxes384184200n/m
Net income$1,329$668$66199
Net credit-related (recoveries) charge-offs$(12)$192$(204)n/m
Selected average balances:
Loans (a)$41,804$44,123$(2,319)(5)%
Deposits45,58736,6038,98425
(a) Included PPP loans with average balances of $1.8 billion and $2.0 billion for the yearyears ended December 31, 2018 compared2021 and 2020, respectively.
n/m - not meaningful
Average loans decreased $2.3 billion, reflecting decreases in National Dealer Services related to the same periodsupply chain issues resulting in the prior year.lower inventory levels and in Energy related to reduced production activity, as well as declines in Technology and Life Sciences, Mortgage Banker Finance and general Middle Market, partially offset by growth in Equity Fund Services, Entertainment and Environmental Services. Average deposits increased $9.0 billion, reflecting increases in all deposit categories due to customers' solid profitability and capital markets activity. The proforma effect of Topic 606 to the year ended December 31, 2017, reducing both noninterest income and noninterest expenses by $118 million, primarily impacted the Business Bank and Other Markets segments.
BUSINESS SEGMENTS
The following table presents net income (loss) by business segment.
(dollar amounts in millions)     
Years Ended December 312018 2017 2016
Business Bank$1,024
 85% $755
 90 % $613
 99 %
Retail Bank65
 5
 (6) (1) (61) (10)
Wealth Management121
 10
 87
 11
 68
 11
 1,210
 100% 836
 100 % 620
 100 %
Finance(1)   (23)   (146)  
Other (a)26
   (70)   3
  
Total$1,235
   $743
   $477
  
(a)    Primarily reflected discrete tax items, including a benefit of $48 million in 2018 and a net charge of $72 million in 2017.
The BusinessCommercial Bank's net income increased $269$661 million to $1.0 billion. Average loans increased $377 million and average deposits decreased $1.9$1.3 billion. Net interest income increased $100decreased slightly, while the provision for credit losses decreased $841 million to $1.6 billion. An increasea benefit of $346 million, reflecting strong credit quality and the economy re-opening as well as improvements in loaneconomic forecasts and in the Energy portfolio since the onset of the pandemic in 2020. Net credit-related charge-offs decreased $204 million to $12 million in net recoveries, primarily due to a reduction of $173 million in Energy net charge-offs. Noninterest income of $355increased $108 million, wasdriven by higher derivative income, warrant income, commercial lending fees and card fees, partially offset by a decrease in securities trading income. Noninterest expenses increased $58 million, primarily reflecting increases in corporate overhead, salaries and benefits expense and outside processing fee expense, partially offset by decreases in FDIC insurance and litigation-related expenses.
Retail Bank
Years Ended December 31,Percent
Change
(dollar amounts in millions)20212020Change
Earnings summary:
Net interest income$565$503$6213%
Provision for credit losses(5)7(12)n/m
Noninterest income1231101312
Noninterest expenses645607386
Provision (benefit) for income taxes5(3)8n/m
Net income$43$2$41n/m
Net credit-related charge-offs$2$1$166%
Selected average balances:
Loans (a)$2,382$2,468$(86)(3%)
Deposits25,68222,8322,85012
(a) Included PPP loans with average balances of $428 million and $401 million for the years ended December 31, 2021 and 2020, respectively.
n/m - not meaningful
F-10

Average loans decreased $86 million while average deposits increased $2.9 billion, reflecting increases in all deposit categories with the exception of time deposits. The Retail Bank's net income increased $41 million increase into $43 million. Net interest income increased $62 million to $565 million, primarily due to higher deposit costs and a $215 million increase in allocated netvolumes earning FTP charges. The FTP allocation reflected increases in funding charges and crediting rates on deposits as a result of higher short-term rates. The provision for credit losses decreased $63$12 million to $6 million, primarily reflecting improved credit quality in most linesa benefit of business. Net credit-related charge-offs decreased $44 million to $52 million, with most of the decreases in Energy, Technology and Life Sciences as well as Corporate Banking. Including the Topic 606 proforma reduction of $105 million to the prior year, noninterest$5 million. Noninterest income increased $13 million, and noninterest expenses increased $34 million. Noninterest income benefited from a $22 million increase inmostly driven by higher card fees (proforma) and smaller increases in other noninterest income categories, partially offset by decreases of $9 million in service charges on deposit accounts (proforma) and $5 million in letter of credit fees. Noninterest expenses reflectedincreased $38 million, primarily due to increases of $12 million in salaries and benefits expense, $11 million in outside processing fee expense (proforma), $8 million in allocated corporate overhead and smaller increases in other categories of noninterestlitigation-related expenses, partially

offset by an $8 million decrease in FDIC insurance expense. Additionally, noninterest expenses in 2017 included $6 million in net gains recognized on sales of assets that did not repeat.
The Retail Bank's net income increased $71 million to $65 million. Average loans and deposits were stable. Net interest income increased $95 million to $548 million. Increases of $98 million in allocated net FTP credits and $14 million in loan income were partially offset by a $16decrease in operational losses.
Wealth Management
Years Ended December 31,Percent
Change
(dollar amounts in millions)20212020Change
Earnings summary:
Net interest income$166$167$(1)—%
Provision for credit losses(32)35(67)n/m
Noninterest income279263166
Noninterest expenses317295228
Provision for income taxes36221464
Net income$124$78$4660%
Net credit-related charge-offs$$3$(3)(93)%
Selected average balances:
Loans (a)$4,903$5,045$(142)(3%)
Deposits5,2184,40281619
(a) Included PPP loans with average balances of $127 million increaseand $134 million for the years ended December 31, 2021 and 2020, respectively.
n/m - not meaningful
Average loans remained relatively stable, while average deposits increased $816 million, reflecting increases in all deposit costs. The FTP allocation primarily reflected an increase in crediting rates on deposits as a resultcategories with the exception of higher short-term rates. Thetime deposits. Wealth Management's net income increased $46 million to $124 million. Net interest income was relatively stable, while provision for credit losses decreased $3$67 million to a benefit of $1 million. Including the Topic 606 proforma reduction of $12 million to the prior year, noninterest income decreased $6 million and noninterest expenses decreased $1 million. Noninterest income was primarily impacted by a decrease of $6$32 million due to the wind down of a retirement savings program and a $2 million decline in service charges on deposit accounts (proforma), partially offset by a $2 million increase in card fees (proforma). The decrease in noninterest expenses primarily reflected decreases of $6 million in outside processing fee expense (proforma), including a $3 million decrease resulting from the wind down of a retirement savings program in 2018, and $4 million in FDIC insurance expense as well as smaller decreases in other categories of noninterest expenses, mostly offset by increases of $9 million in salaries and benefits expense and $4 million in restructuring charges.
Wealth Management's netimproving economic outlook. Noninterest income increased $34$16 million to $121 million. Net interest income increased $12 million to $181$279 million, primarily reflecting an increase in crediting rates on deposits as a result of higher short-term rates. The provision for credit losses decreased $4 million to a benefit of $3 million. Net credit-related recoveries decreased $4 million to $1 million in 2018. Noninterest income increased $11 million to $266 million, primarily reflecting increases of $7 million in fiduciary income, and $3 millionpartially offset by a decrease in brokerage fees. Noninterest expenses increased $8$22 million, primarily reflecting higher corporate overhead and salaries and benefits expenses.
Finance & Other
Years Ended December 31,Percent
Change
(dollar amounts in millions)20212020Change
Earnings summary:
Net interest expense$(464)$(366)$(98)27%
Provision for credit losses(1)(1)n/m
Noninterest income5873(15)(21)
Noninterest expenses2637(11)(30)
Benefit for income taxes(103)(79)(24)30
Net loss$(328)$(251)$(77)31%
Selected average balances:
Deposits1,1941,201(7)(1)
Average deposits, which primarily consist of brokered and reciprocal deposits, decreased $7 million, reflecting decreases in all interest-bearing deposit categories, partially offset by an increase in noninterest-bearing deposits. Net loss for the Finance and Other category increased $77 million to $293$328 million. Net interest expense increased $98 million to $464 million, primarily reflecting a $5 million increase in salaries and benefits expense and smaller increases in other categories of noninterest expenses.
The net loss in the Finance segment decreased $22 million to $1 million, primarily reflecting an increasedecrease in net FTP revenue as a result of higherlower rates charged to the business segments under the Corporation's internal FTP methodology, partially offset by a $15 million loss, net of tax, due to repositioning the securities portfolio.
MARKET SEGMENTS
The following table presents net income (loss) by market segment.
(dollar amounts in millions)     
Years Ended December 312018 2017 2016
Michigan$326
 27% $247
 30% $210
 33 %
California375
 31
 229
 27
 246
 40
Texas229
 19
 175
 21
 (39) (6)
Other Markets280
 23
 185
 22
 203
 33
 1,210
 100% 836
 100% 620
 100 %
Finance & Other (a)25
   (93)   (143)  
Total$1,235
   $743
   $477
  
(a)    Primarily reflected discrete tax items, including a benefit of $48 million in 2018 and a net charge of $72 million in 2017.
The Michigan market's net income increased $79 million to $326 million. Average loans decreased $146 million and average deposits decreased $1.1 billion. Net interest income increased $70 million to $727 million. An increase in loan income of $95 million was partially offset by a $23 million increase in deposit costs and a $1 million increase in allocated net FTP charges. The FTP allocation reflected an increase in funding charges mostly offset by increases in crediting rates on deposits as a result of higher short-term rates. The provision for credit losses increased $22 million to $30 million, primarily reflecting an increase in general Middle Market. Net credit-related charge-offs increased $8 million to $7 million, primarily reflecting an increase in general Middle Market. Including the Topic 606 proforma reduction of $13 million to the prior year, noninterestmethodology. Noninterest income decreased $15 million and noninterest expenses increased $1 million. The decrease in noninterest income reflected decreases of $9 million in fiduciary income, $6 million in service charges on deposit accounts (proforma) and smaller decreases in several other categories, partially offset by a $3 million increase in card fees (proforma). Noninterest expenses were impacted by an $8 million increase in salaries and benefits expense, $6 million of net gains recognized in 2017 on sales of assets that did not repeat and smaller increases in other categories of noninterest expenses, mostly offset by a $14 million decrease in allocated corporate overhead.
The California market's net income increased $146 million to $375 million. Average loans increased $275 million and average deposits decreased $569 million. Net interest income increased $77 million to $788 million. An increase in loan income of $158 million was partially offset by a $23 million increase in deposit costs and a $58 million increase in allocated net FTP charges. The FTP allocation reflected increases in funding charges and in crediting rates on deposits as a result of higher short-term rates. The provision for credit losses decreased $73 million to $31 million, primarily reflecting improved credit quality in most lines of business. Net credit-related charge-offs decreased $6 million to $27 million, with the largest decrease in Corporate Banking. Including the Topic 606 proforma reduction of $7 million to the prior year, noninterest income was unchanged and noninterest expenses increased $27 million. Noninterest income was impacted by a $4 million increase in card fees (proforma)

and smaller increases in other categories of noninterest income, offset by decreases of $3 million each in service charges on deposit accounts (proforma) and letter of credit fees. Noninterest expenses reflected increases of $13 million in allocated corporate overhead, $6 million in salaries and benefits expense, $4 million each in outside processing fee expense (proforma) and restructuring charges as well as smaller increases in other categories of noninterest expenses, partially offset by a $4 million decrease in FDIC insurance expense. Additionally, the increase in noninterest expenses reflected the impact of a $3 million benefit in 2017 due to a favorable litigation-related settlement.
The Texas market's net income increased $54 million to $229 million. Average loans decreased $148 million and average deposits decreased $632 million. Net interest income increased $24 million to $475 million. An increase in loan income of $68 million was partially offset by increases of $5 million in deposit costs and $40 million in allocated net FTP charges. The FTP allocation reflected increases in funding charges and in crediting rates on deposits as a result of higher short-term rates. The provision for credit losses was impacted by a $19 million decrease in provision benefit to $53 million, primarily due to improved credit quality and a large decrease in Energy loans in 2017. Net credit-related charge-offsderivative income. Noninterest expenses decreased $34 million to $12$11 million, primarily reflecting decreases in Energy and general Middle Market. Including the Topic 606 proforma reduction of $6 million to the prior year, noninterest income increased $5 million and noninterest expenses decreased $4 million. Noninterest income was primarily impacted by a $3 million increase in card fees (proforma). The decline in noninterest expenses primarily reflected decreases of $4 million in allocatedlower corporate overhead and $3 million in FDIC insurance expense, partially offset by a $2 million increase in outside processing fee expense (proforma).higher consultant fees.
Other Markets' net income increased $95 million to $280 million. Average loans increased $227 million and average deposits increased $267 million. Net interest income increased $36 million to $352 million. An increase in loan income
F-11

Table of $70 million was partially offset by a $13 million increase in deposit costs and a $21 million increase in allocated net FTP charges. The FTP allocation reflected an increase in funding charges as well as increases in crediting rates on deposits as a result of higher short-term rates. The provision for credit losses decreased $39 million to a $6 million benefit, with most of the decreases in Corporate Banking, Small Business as well as Technology and Life Sciences. Net credit-related charge-offs decreased $9 million to $5 million, primarily reflecting decreases in Technology and Life Sciences as well as Small Business. Including the Topic 606 proforma reduction of $92 million to the prior year, noninterest income increased $28 million and noninterest expenses increased $18 million. Noninterest income was primarily impacted by increases of $15 million in fiduciary income and $13 million in card fees (proforma). Noninterest expenses primarily reflected increases of $11 million in salaries and benefits expense and $10 million in allocated corporate overhead, partially offset by a $4 million decrease in outside processing fee expense (proforma).Contents
Net income for the Finance & Other category increased $118 million to $25 million, primarily reflecting the $120 million change in discrete tax items and an increase in FTP revenue as a result of higher rates charged to the market segments under the Corporation's internal FTP methodology, partially offset by a $15 million loss, net of tax, due to repositioning the securities portfolio.
The following table lists the Corporation's banking centers by geographic market segment.market.
December 31202120202019
Michigan188189192
Texas124123123
California959696
Other Markets:
Arizona171717
Florida877
Canada111
Total Other Markets262525
Total433433436
F-12
December 312018 2017 2016
Michigan193
 194
 209
Texas122
 122
 127
California96
 97
 97
Other Markets:     
Arizona17
 17
 17
Florida7
 7
 7
Canada1 1
 1
Total Other Markets25
 25
 25
Total436
 438
 458

BALANCE SHEET AND CAPITAL FUNDS ANALYSIS
ANALYSIS OF INVESTMENT SECURITIES AND LOANSEarning Assets
(in millions)         
December 312018 2017 2016 2015 2014
Investment securities available-for-sale:         
U.S. Treasury and other U.S. government agency securities$2,727
 $2,727
 $2,779
 $2,763
 $526
Residential mortgage-backed securities (a)9,318
(b)8,124
 7,872
 7,545
 7,274
State and municipal securities
 5
 7
 9
 23
Corporate debt securities
 
 
 1
 51
Equity and other non-debt securities
 82
 129
 201
 242
Total investment securities available-for-sale12,045
 10,938
 10,787
 10,519
 8,116
Investment securities held to maturity:         
Residential mortgage-backed securities (a)
(b)1,266
 1,582
 1,981
 1,935
Total investment securities$12,045
 $12,204
 $12,369
 $12,500
 $10,051
Commercial loans$31,976
 $31,060
 $30,994
 $31,659
 $31,520
Real estate construction loans3,077
 2,961
 2,869
 2,001
 1,955
Commercial mortgage loans9,106
 9,159
 8,931
 8,977
 8,604
Lease financing507
 468
 572
 724
 805
International loans:         
Banks and other financial institutions
 4
 2
 
 31
Commercial and industrial1,013
 979
 1,256
 1,368
 1,465
Total international loans1,013
 983
 1,258
 1,368
 1,496
Residential mortgage loans1,970
 1,988
 1,942
 1,870
 1,831
Consumer loans:         
Home equity1,765
 1,816
 1,800
 1,720
 1,658
Other consumer749
 738
 722
 765
 724
Total consumer loans2,514
 2,554
 2,522
 2,485
 2,382
Total loans$50,163
 $49,173
 $49,088
 $49,084
 $48,593
(a)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
(b)Effective with the adoption of ASU 2017-12 “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities” on January 1, 2018, the Corporation transferred residential mortgage-backed securities with a book value of approximately $1.3 billion from held-to-maturity to available-for-sale.

EARNING ASSETS
Period-End Loans
(in millions)Percent
Change
December 3120212020Change
Commercial loans$29,366 $32,753 $(3,387)(10)%
Real estate construction loans2,948 4,082 (1,134)(28)
Commercial mortgage loans11,255 9,912 1,343 14 
Lease financing640 594 46 
International loans1,208 926 282 30 
Residential mortgage loans1,771 1,830 (59)(3)
Consumer loans:
Home equity1,533 1,588 (55)(3)
Other consumer564 606 (42)(7)
Total consumer loans2,097 2,194 (97)(4)
Total loans$49,285 $52,291 $(3,006)(6)%
On a period-end basis, total loans increased $990 milliondecreased $3.0 billion to $50.2$49.3 billion at December 31, 20182021, compared to $49.2$52.3 billion at December 31, 2017. 2020, which reflected a $3.0 billion decrease in PPP loans.
Average Loans
(in millions)Percent
Change
Years Ended December 3120212020Change
Average Loans By Business Line:
General Middle Market$11,937 $12,227 $(290)(2)%
National Dealer Services4,349 5,967 (1,618)(27)
Equity Fund Services2,781 2,367 414 18 
Environmental Services1,711 1,406 305 22 
Energy1,376 2,021 (645)(32)
Entertainment983 657 326 50 
Technology and Life Sciences920 1,298 (378)(29)
Total Middle Market24,057 25,943 (1,886)(7)
Commercial Real Estate6,737 6,564 173 
Corporate Banking4,445 4,492 (47)(1)
Small Business3,732 3,948 (216)(5)
Mortgage Banker Finance2,833 3,176 (343)(11)
Total Commercial Bank41,804 44,123 (2,319)(5)
Total Retail Bank2,382 2,468 (86)(3)
Total Wealth Management4,903 5,045 (142)(3)
Total Finance and Other(6)(5)(1)23 
Total loans$49,083 $51,631 $(2,548)(5)%
Average total loans increased $208 milliondecreased $2.5 billion to $48.8$49.1 billion in 2018,2021, compared to $48.6$51.6 billion in 2017. The following tables provide information about the changes in the Corporation's average loan portfolio in 2018, compared to 2017.
(dollar amounts in millions)    
Percent
Change
Years Ended December 312018 2017 Change 
By Business Line:       
General Middle Market$11,800
 $11,873
 $(73) (1)%
National Dealer Services7,294
 6,953
 341
 5
Energy1,868
 2,075
 (207) (10)
Technology and Life Sciences3,808
 3,281
 527
 16
Environmental Services1,099
 924
 175
 19
Entertainment731
 659
 72
 11
Total Middle Market26,600
 25,765
 835
 3
Corporate Banking4,337
 4,682
 (345) (7)
Mortgage Banker Finance1,716
 1,768
 (52) (3)
Commercial Real Estate5,287
 5,230
 57
 1
Small Business3,678
 3,796
 (118) (3)
Total Business Bank41,618

41,241
 377
 1
Total Retail Bank2,067
 2,061
 6
 
Total Wealth Management5,081
 5,256
 (175) (3)
Total loans$48,766
 $48,558
 $208
  %
By Loan Type:       
Commercial$30,534
 $30,415
 $119
  %
Real estate construction loans3,155
 2,958
 197
 7
Commercial mortgage loans9,131
 9,005
 126
 1
Lease financing470
 509
 (39) (8)
International loans1,021
 1,157
 (136) (12)
Residential mortgage loans1,983
 1,989
 (6) 
Consumer loans:       
Home equity1,749
 1,794
 (45) (3)
Other consumer723
 731
 (8) (1)
Total consumer loans2,472
 2,525
 (53) (2)
Total loans$48,766
 $48,558
 $208
  %
By Geographic Market:       
Michigan$12,531
 $12,677
 $(146) (1)%
California18,283
 18,008
 275
 2
Texas9,821
 9,969
 (148) (1)
Other Markets8,131
 7,904
 227
 3
Total loans$48,766
 $48,558
 $208
  %
2020. Middle Market business lines generally serve customers with annual revenue between $20$30 million and $500 million. Within the Middle MarketsMarket business lines, the largest changes were due to Technology and Life Sciences as well asdecreases in National Dealer Services partially offset byand Energy. Technology and Life Sciences serves two segments: (1) private equity and venture capital firms, referred to as equity fund services, and (2) companies that are typically owned by venture-capital firms, where significant equity is invested to create products and build companies around new intellectual property. The $527 million increase in average Technology and Life Sciences loans primarily reflected growth in the equity fund services business. National Dealer Services provides floor plan inventory financing and commercial mortgages to auto dealerships. The $341 million increase$1.6 billion decrease in average National Dealer Services loans largely reflected the expansionimpact of new and existing relationships.supply chain issues resulting in lower inventory levels. Customers in the Energy business line are primarily engaged in the oil and gas businesses. The $207$645 million decrease in average Energy loans primarily reflected Energy customers taking actions to adjust their cash flow and reduce their bank debt, including selling assets and raising capital, as well as improved operations.reduced production activity. For more information on Energy loans, refer to "Energy Lending" in the "Risk Management" section of this financial review.

F-13

Corporate Banking generally serves customers
(in millions)Percent
Change
Years Ended December 3120212020Change
Average Loans By Loan Type:
Commercial loans (a)$29,283 $32,144 $(2,861)(9)%
Real estate construction loans3,609 3,912 (303)(8)
Commercial mortgage loans10,610 9,839 771 
Lease financing596 594 — 
International loans1,063 1,028 35 
Residential mortgage loans1,813 1,905 (92)(5)
Consumer loans:
Home equity1,554 1,667 (113)(7)
Other consumer555 542 13 
Total consumer loans2,109 2,209 (100)(5)
Total loans$49,083 $51,631 $(2,548)(5)%
(a) Included PPP loans with revenue over $500 million. The $345 million decrease in average Corporate Banking loans reflected continued pricingbalances of $2.3 billion and credit discipline as well as an elevated number of customers taking advantage of favorable valuations to sell their businesses.$2.5 billion for the years ended December 31, 2021 and 2020.
Investment Securities
(in millions)Percent
Change
December 3120212020Change
U.S. Treasury securities$2,993 $4,658 $(1,665)(36)%
Residential mortgage-backed securities (a)13,288 10,370 2,918 28 
Commercial mortgage-backed securities (a)705 — 705 n/m
Total investment securities$16,986 $15,028 $1,958 13 %
 Maturity (a)
Weighted
Average
Maturity
(dollar amounts in millions)Within 1 Year1 - 5 Years5 - 10 YearsAfter 10 YearsTotal
December 31, 2018AmountYieldAmountYieldAmountYieldAmountYieldAmountYieldYears
U.S. Treasury and other U.S. government agency securities$100
1.42%$2,627
2.34%$
%$
%$2,727
2.30%2.3
Residential mortgage-backed securities (b)

15
2.70
1,502
2.43
7,801
2.36
9,318
2.37
19.7
Total investment securities$100
1.42%$2,642
2.34%$1,502
2.43%$7,801
2.36%$12,045
2.35%15.8
(a)Based on final contractual maturity.
(b)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
Investmentn/m - not meaningful
On a period-end basis, investment securities decreased $159 million to $12.0were $17.0 billion at December 31, 2018, from $12.22021, compared to $15.0 billion at December 31, 2017, including2020. Mortgage-backed securities increased $3.6 billion due to continued deployment of excess liquidity, partially offset by a $57 million increase$1.7 billion decrease in net unrealized losses. Net unrealized losses on investmentTreasury securities available-for-sale were $180 million at December 31, 2018, comparedrelated to net unrealized losses of $123 million at December 31, 2017.maturities. At December 31, 2018,2021, the weighted-average expected lifeeffective duration of the Corporation's residential mortgage-backed securities portfolio was approximately 3.54.2 years. On an average basis, investment securities decreased $397 millionincreased $2.3 billion to $11.8$15.7 billion in 2018,2021, compared to $12.2$13.4 billion in 2017. The decrease2020 as excess liquidity was primarily due to an increaseinvested in net unrealized losses.mortgage-backed securities.
At the end of the third quarter 2018, the Corporation repositioned $1.3 billion of treasury securities by purchasing securities yielding approximately $4 million in additional interest per quarter. The loss taken
(weighted average yield) (a)U.S. Treasury
securities
Residential
mortgage-backed
securities (b)
Commercial
mortgage-backed
securities (b)
Total investment
securities
December 31, 2021
Maturity (c)
Within 1 year2.48 %2.27 % %2.41 %
1-5 Years0.93 2.42  1.58 
5-10 Years 2.03 1.74 1.89 
After 10 Years 1.68 1.68 1.68 
Total1.02 %1.82 %1.74 %1.68 %
Weighted Average Maturity (years)2.3 26.4 9.6 21.5 
(a)Weighted average yields are calculated on the securities sold ($15 million, netbasis of tax) was offsetyield to maturity based on the carrying value of each debt security, aggregated by discrete tax benefits resulting from actions taken related to the Tax Cutstype and Jobs Act.agency.
(b)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
(c)Based on final contractual maturity.
Interest-Bearing Deposits with Banks and Other Short-Term Investments
Interest-bearing deposits with banks primarily include deposits with the Federal Reserve Bank (FRB) and also include deposits with banks in developed countries or international banking facilities of foreign banks located in the United States. Interest-bearing deposits with banks are mostly used to manage liquidity requirements of the Corporation. Interest-bearingOn a period-end basis, interest-bearing deposits with banks decreased $1.2increased $6.7 billion to $3.2$21.4 billion at December 31, 2018.2021, resulting from growth in relationship-based deposits due to continued customer profitability and capital markets activity. On an average basis, interest-bearing deposits with banks decreased $743 millionincreased $8.5 billion to $4.7$18.7 billion in 2018, compared to $5.4 billion in 2017.2021.
Other short-term investments include federal funds sold, trading securities, money market investments and loans held-for-sale. Substantially all trading securities are deferred compensation plan assets. Loans held-for-sale typically represent residential mortgage loans originated with management's intention to sell and, from time to time, other loans that are transferred
F-14

to held-for-sale. OtherOn a period-end basis, other short-term investments increased $38$25 million to $134$197 million at December 31, 2018.2021. On an average basis, other short-term investments increased $42$30 million to $134$183 million in 2018.2021.
DEPOSITS AND BORROWED FUNDSDeposits and Borrowed Funds
At December 31, 2018,On a period-end basis, total deposits were $55.6 billion, a decrease of $2.3 billion, or 4 percent, compared to $57.9$82.3 billion at December 31, 2017, reflecting a decrease2021, an increase of $3.4$9.5 billion, or 1113 percent, compared to $72.9 billion at December 31, 2020, reflecting increases of $6.4 billion, or 16 percent, in noninterest-bearing deposits partially offset by an increase of $1.0and $3.1 billion, or 49 percent, in interest-bearing deposits. The Corporation's average deposits and borrowed funds balances are detailed in the following table.
(dollar amounts in millions)      
Percent
Change
(dollar amounts in millions)Percent
Change
Years Ended December 312018 2017 Change Years Ended December 3120212020Change
Noninterest-bearing deposits$29,241
 $31,013
 $(1,772) (6)%Noninterest-bearing deposits$41,441 $33,053 $8,388 25 %
Money market and interest-bearing checking deposits22,378
 21,585
 793
 4
Money market and interest-bearing checking deposits31,063 26,798 4,265 16 
Savings deposits2,199
 2,133
 66
 3
Savings deposits3,018 2,454 564 23 
Customer certificates of deposit2,092
 2,471
 (379) (15)Customer certificates of deposit2,110 2,626 (516)(20)
Other time depositsOther time deposits 17 (17)(100)
Foreign office time deposits25
 56
 (31) (56)Foreign office time deposits49 90 (41)(46)
Total deposits$55,935
 $57,258
 $(1,323) (2)%Total deposits$77,681 $65,038 $12,643 19 %
Short-term borrowings$62
 $277
 $(215) (78)%Short-term borrowings$2 $314 $(312)(99)%
Medium- and long-term debt5,842
 4,969
 873
 18
Medium- and long-term debt3,035 6,549 (3,514)(54)
Total borrowed funds$5,904
 $5,246
 $658
 13 %Total borrowed funds$3,037 $6,863 $(3,826)(56)%
Average deposits decreased $1.3increased $12.6 billion or 2 percent, to $55.9$77.7 billion in 2018,2021, compared to $57.3$65.0 billion in 2017,2020, reflecting a decreaseincreases of $1.8$8.4 billion or 6 percent, in noninterest-bearing deposits, partially offset by an increase of $449 million, or 2 percent,and $4.3 billion in interest-bearing deposits. The decrease isincreases were primarily duethe result of customers' solid profitability and capital markets activity as well as liquidity injected into the economy through fiscal and monetary actions.
Uninsured deposits are defined as the portion of deposit accounts in U.S. offices that exceed the FDIC insurance limit and amounts in any other uninsured investment or deposit account that are classified as deposits and are not subject to more efficient cash management by customers.any federal or state deposit insurance regimes. Total uninsured deposits were $71.8 billion and $52.0 billion at December 31, 2021 and 2020, respectively, as calculated per regulatory guidance. The largest decreases

were reflectedportion of domestic time deposits in general Middle Market (driven by a $925excess of insurance limits was $554 million decline in Municipalities), Commercial Real Estate ($598 million) and Corporate Banking ($454 million), partially offset by increases in Finance ($699 million) and Technology and Life Sciences ($418 million). By market, average deposits decreased in Michigan ($1.1 billion), Texas ($632 million) and in California ($569 million), partially offset by increases in Finance and Other ($662 million) and Other Markets ($267 million).
Short-term borrowings totaled $44$524 million at December 31, 2018, an increase2021 and 2020, respectively. Time deposits otherwise uninsured, which consist of $34 million compared to $10foreign office time deposits, totaled $50 million at December 31, 2017.2021 and all mature in three months or less.
On a period-end basis, there were no short-term borrowings at both December 31, 2021, and 2020. Short-term borrowings primarily include federal funds purchased, short-term FHLBFederal Home Loan Bank (FHLB) advances and securities sold under agreements to repurchase. Average short-term borrowings decreased $215 million, to $62were $314 million in 2018, compared to $277 million2020, which primarily consisted of short-term FHLB advances, which the Corporation settled in 2017.
Total medium- and long-term debt at December 31, 2018 increased $1.8 billion to $6.5 billion, compared to $4.6 billion at December 31, 2017. The increase in medium- and long-term debt reflected a $1.0 billion increase in long-term FHLB advancesfull during the first quarter 2018 and an issuancehalf of $850 million in medium-term notes during the third quarter 2018. 2020.
The Corporation uses medium- and long-term debt, which includes long-term FHLB advances, medium- and long-term senior notes as well as medium-term and subordinated notes, to provide funding to supportfor earning assets, liquidity and regulatory capital. On a period-end basis, total medium- and long-term debt at December 31, 2021 decreased $2.9 billion to $2.8 billion, compared to $5.7 billion at December 31, 2020, which reflected the repayment of $2.8 billion in floating-rate FHLB advances during the first quarter of 2021. Average medium- and long-term debt increased $873 million,decreased $3.5 billion, or 1854 percent, to $5.8$3.0 billion in 2018,2021, compared to $5.0$6.5 billion in 2017.
On February 1, 2019, the Corporation issued $350 million of 4.00% senior notes maturing in 2029, swapped to floating rate at 30-day LIBOR plus 129 basis points. Proceeds will be used for general corporate purposes, which may include working capital, investments in or advances to existing or future subsidiaries, and repurchases, maturities and redemptions of other outstanding securities. Pending such use, the net proceeds will be invested for the short term.2020.
Further information on medium- and long-term debt is provided in Note 12 to the consolidated financial statements.
CAPITAL
F-15

Capital
Total shareholders' equity decreased $456$153 million to $7.5$7.9 billion at December 31, 2018,2021, compared to $8.0$8.1 billion at December 31, 2017.2020. The following table presents a summary of changes in total shareholders' equity in 2018.2021.
(in millions)
Balance at January 1, 2021$8,050
Net income1,168
Cash dividends declared on common stock(365)
Cash dividends declared on preferred stock(23)
Purchase of common stock(723)
Other comprehensive (loss) income, net of tax:
Investment securities$(310)
Cash flow hedges(100)
Defined benefit and other postretirement plans134
Total other comprehensive loss, net of tax(276)
Net issuance of common stock under employee stock plans25
Share-based compensation41
Balance at December 31, 2021$7,897
(in millions)
  
  
Balance at January 1, 2018  $7,963
Cumulative effect of change in accounting principles
  15
Net income  1,235
Cash dividends declared on common stock  (309)
Purchase of common stock  (1,329)
Other comprehensive loss:   
Investment securities available-for-sale$(38)  
Defined benefit and other postretirement plans(121)  
Total other comprehensive loss  (159)
Issuance of common stock under employee stock plans  43
Share-based compensation  48
Balance at December 31, 2018  $7,507
The following table summarizes the Corporation’s repurchase activity for the year ended December 31, 2021.
Further information about other comprehensive loss is provided in
(shares in thousands)Total Number of Shares Purchased as 
Part of Publicly Announced Repurchase Plans or Programs
Remaining
Repurchase
Authorization (a)
Total Number
of Shares
Purchased (b)
Average Price
Paid Per 
Share
First Quarter 2021 4,870 55 $61.39 
Second Quarter 20215,882 8,988 5,884 76.51 
Third Quarter 20213,050 5,938 3,052 72.12 
Fourth Quarter 2021564 5,374 565 88.61 
Total 20219,496 5,374 9,556 75.73 
(a) Maximum number of shares that may yet be purchased under the Consolidated Statementspublicly announced plans or programs.
(b) Includes approximately 60,000 shares purchased pursuant to deferred compensation plans and shares purchased from employees to pay for taxes related to restricted stock vesting under the terms of Comprehensive Income and Note 14 toan employee share-based compensation plan during the consolidated financial statements.year ended December 31, 2021. These transactions are not considered part of the Corporation's repurchase program.
In July 2018,On April 27, 2021 the Corporation's Board of Governors ofDirectors approved the Federal Reserve System issued a statement announcing that, consistent with the recently enacted Economic Growth, Regulatory Relief and Consumer Protection Act (EGRRCPA), bank holding companies with less than $100 billion in total assets are no longer subjectauthorization to certain regulations and reporting requirements, such as Dodd-Frank Act stress testing, Comprehensive Capital Analysis and Review (CCAR) and the Liquidity Coverage Ratio, effective immediately. EGRRCPA also revised the definition of High Volatility Commercial Real Estate (HVCRE) exposure for regulatory capital calculations. The Corporation adopted the revised HVCRE definition effective September 30, 2018. The resulting change in regulatory capital ratios was not significant.
The Corporation expectsrepurchase up to return excess capital to shareholders with a target of reaching a common equity Tier 1 capital ratio of 9.5 percent toan additional 10 percent by the end of 2019. The timing and ultimate amount of future distributions will be subject to various factors including financial performance, capital position and market conditions.
During 2018, the Corporation repurchased 14.8 million shares for a total $1.3 billion. This included $149 million in the first quarter and $169 millionof its outstanding common stock, including an Accelerated Share Repurchase transaction (ASR) effected in the second quarter repurchased underof 2021. Since the Corporation's 2017 capital plan. The Boardinception of Directors (the Board) approved the repurchase of $500 million in each of the third and fourth quarters of 2018. The Corporation facilitated the third and fourth quarter repurchases through an accelerated share repurchase program due to volume and timing execution constraints.

In January 2019, the Board authorized the repurchasein 2010, a total of up to an additional 1597.2 million shares of Comerica Incorporated outstanding common stock. This action is in addition to the 4.7 million shares remaining at December 31, 2018 under the Board's prior authorizationshave been authorized for the equity repurchase program. The number of shares ultimately repurchased during 2019 will depend on many factors, including capital needs of the Corporation and market conditions. Additionally, repurchases of common stock under the authorization may include open market purchases, privately negotiated transactions or accelerated repurchase programs.repurchase. There is no expiration date for the Corporation's share repurchase program. The timing and actual amount of additional share repurchases are subject to various factors, including the Corporation's earnings generation, capital needs to fund future loan growth and market conditions.
The Board approvedCorporation continues to target a 4-cent increase in the quarterly dividend to $0.34 per share in April 2018 and further increased the divided 26 cents to $0.60 per share in July 2018. In January 2019, the Board approved a 7-cent increase in the quarterly dividend to $0.67 per share, effective for the dividend payable on AprilCommon Equity Tier 1 2019.
The following table summarizes the Corporation’s equity repurchase activity for the year ended (CET1) capital ratio of approximately 10 percent with active capital management. At December 31, 2018.2021, the Corporation's CET1 capital ratio was 10.13 percent, a decrease of 21 basis points compared to December 31, 2020.
(shares in thousands)
Total Number of Shares and Warrants Purchased as 
Part of Publicly Announced Repurchase Plans or Programs (a)
 
Remaining
Repurchase
Authorization (b)
 
Total Number
of Shares
Purchased (c)
 
Average Price
Paid Per 
Share
First quarter 20181,565
 8,714
 1,674
 $95.16
Second quarter 20181,755
 6,952
 1,759
 96.32
Third quarter 20185,137
 11,706
(d)5,143
 97.32
Fourth quarter 20186,316
 4,707
 6,318
 79.16
Total 201814,773
 4,707
 14,894
 $89.26
(a)The Corporation made no repurchases of warrants under the repurchase program during the year ended December 31, 2018. Upon exercise of a warrant, the number of shares with a value equal to the aggregate exercise price is withheld from an exercising warrant holder as payment (known as a "net exercise provision"). During the year ended December 31, 2018, the Corporation withheld the equivalent of approximately 309,000 shares to cover an aggregate of $9 million in exercise price and issued approximately 585,000 shares to the exercising warrant holders. Shares withheld in connection with the net exercise provision are not included in the total number of shares or warrants purchased in the above table. All unexercised warrants expired in fourth quarter 2018.
(b)Maximum number of shares and warrants that may yet be purchased under the publicly announced plans or programs. In January 2019, the Board rescinded its warrant repurchase authorization following the expiration of all unexercised warrants.
(c)Includes approximately 121,000 shares purchased pursuant to deferred compensation plans and shares purchased from employees to pay for taxes related to restricted stock vesting under the terms of an employee share-based compensation plan during the year ended December 31, 2018. These transactions are not considered part of the Corporation's repurchase program.
(d)Includes July 24, 2018 equity repurchase authorization for an additional 10 million shares.
The U.S. adoption ofCorporation is subject to the capital adequacy standards under the Basel III regulatory capital framework (Basel III) became effective for the Corporation on January 1, 2015. Basel III included a more stringent definition of capital and introduced a common equity Tier 1 (CET1) capital requirement; set forth two. This regulatory framework establishes comprehensive methodologies for calculating regulatory capital and risk-weighted assets (RWA), a standardized approach and an advanced approach; introduced two capital buffers, a conservation buffer and a countercyclical buffer (applicable to advanced approach entities); established a supplemental leverage ratio (applicable to advanced approach entities); and. Basel III also set out minimum capital ratios andas well as overall capital adequacy standards. The capital conservation buffer is being phased in and will be fully implemented on January 1, 2019.
Under Basel III, regulatory capital comprises CET1 capital, additional Tier 1 capital and Tier 2 capital. CET1 capital predominantly includes common shareholders' equity, less certain deductions for goodwill, intangible assets and deferred tax assets that arise from net operating losses and tax credit carry-forwards. Additionally, the Corporation has elected to permanently exclude capital in accumulated other comprehensive income (AOCI) related to debt and equity securities classified as available-for-sale as well as for cash flow hedges and defined benefit postretirement plans from CET1, an option available to standardized approach entities under Basel III. Tier 1 capital incrementally includes noncumulative perpetual preferred stock. Tier 2 capital includes Tier 1 capital as well as subordinated debt qualifying as Tier 2 and qualifying allowance for credit losses. The ultimate treatment for certain specific deductions and adjustments is yetIn 2020, the Corporation elected regulatory relief to be determined pendingdefer the finalization of a proposal by banking regulators to simplify certain aspects of the capital rules. In addition, in December 2018, the federal banking regulators adopted rules that would permit bank holding companies and banks to phase in, for regulatory capital purposes, the day-one impact of adopting the new current expectedCECL model for measuring credit loss accounting rulelosses on retained earnings over a periodregulatory capital. The deferred amounts were zero at December 31, 2021 and $72 million at December 31, 2020. For further information about the adoption of three years. The Corporation does not expectCECL, refer to Note 1 to the proposed rule to have a significant impact on its capital ratios.consolidated financial statements.
F-16

The Corporation computes RWA using the standardized approach. Under the standardized approach, RWA is generally based on supervisory risk-weightings which vary by counterparty type and asset class. Under the Basel III standardized approach, capital is required for credit risk RWA, to cover the risk of unexpected losses due to failure of a customer or counterparty to meet its financial obligations in accordance with contractual terms; and if trading assets and liabilities exceed certain thresholds, capital is also required for market risk RWA, to cover the risk of losses due to adverse market movements or from position-specific factors.

The following table presents the minimum ratios required to be considered "adequately capitalized."
required.
Common equity tier 1 capital to risk-weighted assets4.5004.5 %
Tier 1 capital to risk-weighted assets6.0006.0 
Total capital to risk-weighted assets8.0008.0 
Capital conservation buffer (a)1.8752.5 
Tier 1 capital to adjusted average assets (leverage ratio)4.0004.0 
(a)In addition to the minimum risk-based capital requirements, the Corporation is required to maintain a minimum capital conservation buffer in the form of common equity, in order to avoid restrictions on capital distributions and discretionary bonuses. The required amount of the capital conservation buffer is being phased in and ultimately increases to 2.5% on January 1, 2019. The capital conservation buffer indicated above is as of December 31, 2018.
(a)In addition to the minimum risk-based capital requirements, the Corporation is required to maintain a minimum capital conservation buffer in the form of common equity tier 1 capital, in order to avoid restrictions on capital distributions and discretionary bonuses.
The Corporation's capital ratios exceeded minimum regulatory requirements as follows:
December 31, 2021December 31, 2020
(dollar amounts in millions)Capital/AssetsRatioCapital/AssetsRatio
Common equity tier 1 (a), (b)$7,064 10.13 %$6,919 10.34 %
Tier 1 risk-based (a), (b)7,458 10.70 7,313 10.93 
Total risk-based (a)8,608 12.35 8,833 13.20 
Leverage (a)7,458 7.74 7,313 8.63 
Common shareholders' equity7,503 7.93 7,656 8.69 
Tangible common equity (b)6,857 7.30 7,020 8.02 
Risk-weighted assets69,708 66,931 
 December 31, 2018 December 31, 2017
(dollar amounts in millions)Capital/Assets Ratio Capital/Assets Ratio
Common equity tier 1 and tier 1 risk-based$7,470
 11.14% $7,773
 11.68%
Total risk-based8,855
 13.21
 9,211
 13.84
Leverage7,470
 10.51
 7,773
 10.89
Common equity7,507
 10.60
 7,963
 11.13
Tangible common equity (a)6,866
 9.78
 7,320
 10.32
Risk-weighted assets67,047
   66,575
  
(a) Ratios reflect deferral of CECL model impact as calculated per regulatory guidance. The deferred amounts were zero at December 31, 2021 and $72 million at December 31, 2020.
(a)See Supplemental Financial Data section for reconcilements of non-GAAP financial measures.
(b) See Supplemental Financial Data section for reconciliations of non-GAAP financial measures and regulatory ratios.
At December 31, 2018,2021, the Corporation and its U.S. banking subsidiaries exceeded the capital ratios required for an institution to be considered “well capitalized” by the standards developed under the Federal Deposit Insurance Corporation Improvement Act of 1991. Refer to Note 20 to the consolidated financial statements for further discussion of regulatory capital requirements, and capital ratio calculations.calculations and restrictions on the ability of the Corporation's banking subsidiaries to transfer assets to the Corporation.

RISK MANAGEMENT
The Corporation assumes various types of risk as a result of conducting business in the normal course. The Corporation's enterprise risk management framework provides a process for identifying, measuring, controlling and managing these risks. This framework incorporates a risk assessment process, a collection of risk committees that manage the Corporation's major risk elements and a risk appetite statement that outlines the levels and types of risks the Corporation accepts. The Corporation continuously enhances its enterprise risk framework with additional processes, tools and systems designed to not only provide management with deeper insight into the various existing and emerging risks in accordance with its appetite for risk, but also to improve the Corporation's ability to control those risks and ensure that appropriate consideration is received for the risks taken.
The Corporation’s front line employees, the first line of defense, are responsible for the day-to-day management and ownership of risks, including the identification, assessment, measurement and control of risks encountered as a part of the normal course of business. RisksEach of the major risk categories are further monitored and measured and controlled by specialized risk managers in the second line of defense comprised of specialized risk managers for each ofwithin the major risk categoriesEnterprise Risk Division, who provide oversight as well as independent and effective challenge and guidance for the risk management activities of the organization. The majority of these risk managers reside in the Enterprise Risk Division. The Enterprise Risk Division, led by the Chief Risk Officer, is responsible for designing and managing the Corporation’s enterprise risk management framework and ensures effective risk management oversight. Risk management committees serve as a point of review and escalation for those risks which may have risk interdependencies or where risk levels may be nearing the limits outlined in the Corporation’s risk appetite statement. These committees comprise senior and executive management that represent views from both the lines of business and risk management. Internal Audit, the third line of defense, monitors and assesses the overall effectiveness of the risk management framework on an ongoing basis and provides an independent, objective assessment of the Corporation’s ability to manage and control risk to management and the Audit Committee of the Board.
F-17

The Enterprise Risk and Return Committee (formerly known as the Enterprise-Wide Risk Management Committee,Committee), chaired by the Chief Risk Officer, is established by the Enterprise Risk Committee of the Board and is responsible for governance over the risk management framework, providing oversight in managing the Corporation's aggregate risk position and reporting on the comprehensive portfolio of risks as well as the potential impact these risks can have on the Corporation's risk profile and resulting capital level. Capital isprovides the common denominator ofprimary buffer for risk and also serves as a measuring tool when evaluating risk. The Enterprise-WideEnterprise Risk Managementand Return Committee is principally composed of senior officers and executives representing the different risk areas and business units who are appointed by the Chairman and Chief Executive Officer of the Corporation.
The Board's Enterprise Risk Committee meets quarterly and is chartered to assist the Board in promoting the best interests of the Corporation by overseeing policies procedures and risk practices relating to enterprise-wide risk and ensuring compliance with bank regulatory obligations. Members of the Enterprise Risk Committee are selected such that the committee comprises individuals whose experiences and qualifications can lead to broad and informed views on risk matters facing the Corporation and the financial services industry. These include, but are not limited to, existing and emerging risk matters related to credit, market, liquidity, operational, technology, compliance and strategic conditions. A comprehensive risk report is submitted to the Enterprise Risk Committee each quarter providing management's view of the Corporation's aggregate risk position.
Further discussion and analyses of each major risk area are included in the following sub-sections of the Risk Management section in this financial review.
CREDIT RISK
Credit Risk
Credit risk represents the risk of loss due to failure of a customer or counterparty to meet its financial obligations in accordance with contractual terms. Credit risk is found in all activities where success depends on counterparty, issuer or borrower performance. It arises any time funds are extended, committed, invested or otherwise exposed, whether reflected on or off the balance sheet. The governance structure is administered through the Strategic Credit Committee. The Strategic Credit Committee is chaired by the Chief Credit Officer and approves recommendations to address credit risk matters through credit policy, credit risk management practices and required credit risk actions. The Strategic Credit Committee also ensures a comprehensive reporting of credit risk levels and trends, including exception levels, along with identification and mitigation of emerging risks. In order to facilitate the corporate credit risk management process, various other corporate functions provide the resources for the Strategic Credit Committee to carry out its responsibilities. The Corporation manages credit risk through underwriting and periodically reviewing and approving its credit exposures using approvedin accordance with established credit policies and guidelines. Additionally, the Corporation manages credit risk through loan portfolio diversification, limiting exposure to any single industry, customer or guarantor, and selling participations and/or syndicating credit exposures above those levels it deems prudent to third parties.
The Credit Division manages credit policy and provides the resources to manage the line of business transactional credit risk, assuring that all exposure is risk rated according to the requirements of the credit risk rating policy and providing business segment reporting support as necessary. The Enterprise Risk Division provides credible and well-documented challenge of overall portfolio credit risk, and other credit-related attributes of the Corporation's loan portfolios, with a particular emphasis on all attendant modeled results. The Corporation's Asset Quality Review function, a division of Internal Audit, audits the accuracy of internal risk ratings that are assigned by the lending and credit groups. The Special Assets Group is responsible for managing the recovery process on distressed or defaulted loans and loan sales.

Portfolio Risk Analytics, within the Credit Division, provides comprehensive reporting on portfolio credit risk levels and trends, continuous assessment and verification of risk rating models, quarterly calculation of the allowance for loan losses and the allowance for credit losses on lending-related commitments and calculationcalculations of economic credit risk capital.
ANALYSIS OF THE ALLOWANCE FOR LOAN LOSSES
(dollar amounts in millions)         
Years Ended December 312018 2017 2016 2015 2014
Balance at beginning of year$712
 $730
 $634
 $594
 $598
Loan charge-offs:         
Commercial95
 133
 181
 139
 59
Commercial mortgage3
 3
 3
 3
 22
Lease financing
 1
 
 1
 
International1
 6
 23
 14
 6
Residential mortgage
 
 
 1
 2
Consumer4
 6
 7
 10
 13
Total loan charge-offs103
 149
 214
 168
 102
Recoveries:         
Commercial44
 37
 43
 33
 34
Real estate construction
 1
 
 1
 4
Commercial mortgage2
 9
 20
 21
 28
Lease financing
 
 
 
 2
International1
 3
 
 
 
Residential mortgage1
 1
 1
 2
 4
Consumer4
 6
 4
 11
 5
Total recoveries52
 57
 68
 68
 77
Net loan charge-offs51
 92
 146
 100
 25
Provision for loan losses11
 73
 241
 142
 22
Foreign currency translation adjustment(1) 1
 1
 (2) (1)
Balance at end of year$671
 $712
 $730
 $634
 $594
Net loan charge-offs during the year as a percentage of average loans outstanding during the year0.11% 0.19% 0.30% 0.21% 0.05%
both expected and unexpected loss.
Allowance for Credit Losses
The allowance for credit losses includes both the allowance for loan losses and the allowance for credit losses on lending-related commitments. TheAs a percentage of total loans, the allowance for loancredit losses represents management's assessmentwas 1.26 percent at December 31, 2021, compared to 1.90 percent at December 31, 2020. Excluding PPP loans, which are guaranteed by the Small Business Administration, the allowance for credit losses was 1.27 percent of probable, estimable losses inherent in the Corporation's loan portfolio.total loans at December 31, 2021, compared to 2.03 percent at December 31, 2020. The allowance for credit losses on lending-related commitments, includedcovered 2.3 times and 2.8 times total nonperforming loans at December 31, 2021 and December 31, 2020, respectively.
The allowance for credit losses decreased by $374 million from $992 million at December 31, 2020 to $618 million at December 31, 2021, primarily reflecting strong credit quality, a sustained recovery by the U.S. economy from the COVID-19 pandemic and benefits of mitigating actions by the U.S. government. In addition to $2.8 trillion of stimulus spending approved by Congress between December 2020 and March 2021, the rollout of the COVID vaccine, strong business spending and improved labor markets contributed to an overall improved economic outlook. However, there continues to be uncertainty related to the impact of emerging COVID-19 variants and vaccine efficacy, supply chain constraints, future monetary and fiscal support and inflationary pressures.
F-18

These factors shaped the 2-year reasonable and supportable forecast used by the Corporation in accrued expensesits CECL modeled estimate at December 31, 2021. The U.S. economy is expected to grow at a moderate pace through the first half of 2022 before normalizing into historical growth rates. Forecasts for other key economic variables, including the unemployment rate, are generally in line with Gross Domestic Product (GDP) projections. Oil prices are expected to decrease from current elevated levels. Interest rates are expected to increase, reflecting the Federal Reserve's revised expectations, while corporate bond spreads reflect normalized default risk. The following table summarizes select economic variables representative of the economic forecasts used to develop the allowance for credit losses estimate at December 31, 2021.

Economic VariableBase Forecast
Real GDP growthGradually normalizes to a long-term growth rate of 2 to 3 percent by third quarter 2022.
Unemployment rateCurrent levels decrease to 4 percent by second quarter 2022, remaining between 3.5 percent and 4 percent through the remainder of the forecast period.
Corporate BBB bond to 10-year Treasury bond spreadsSpreads remain below 2 percent throughout the forecast period.
Oil PricesPrices gradually decline from current levels to $62 by second quarter 2023.
Due to the high degree of uncertainty regarding the ultimate economic consequence of the pandemic, management considered other economic scenarios to make appropriate qualitative adjustments for certain sectors of its lending portfolio, including more benign and other liabilities on the Consolidated Balance Sheets, provides for probable losses inherent in lending-related commitments, including unused commitments to extend credit and standby letters of credit. more severe forecasts.
Refer to Note 1 to the consolidated financial statements for a discussion of the methodology used in the determination of the allowance for credit losses.
An analysis of the coverage of the allowanceAllowance for loan losses is provided in the following table.
Years Ended December 312018 2017 2016
Allowance for loan losses as a percentage of total loans at end of year1.34% 1.45% 1.49%
Allowance for loan losses as a multiple of total nonperforming loans at end of year2.9x
 1.7x
 1.2x
Allowance for loan losses as a multiple of total net loan charge-offs for the year13.1x
 7.7x
 5.0x
Loan Losses
The allowance for loan losses was $671 million at December 31, 2018, comparedrepresents management’s estimates of current expected credit losses in the Corporation’s loan portfolio. Pools of loans with similar risk characteristics are collectively evaluated, while loans that no longer share risk characteristics with loan pools are evaluated individually.
Collective loss estimates are determined by applying reserve factors, designed to $712 million at December 31, 2017, a decreaseestimate current expected credit losses, to amortized cost balances over the remaining contractual life of $41 million, or 6 percent.the collectively evaluated portfolio. Loans with similar risk characteristics are aggregated into homogeneous pools. The decrease in the allowance for loan losses reflected continued improvement inalso includes qualitative adjustments to bring the allowance to the level management believes is appropriate based on factors that have not otherwise been fully accounted for, including adjustments for foresight risk, input imprecisions and model imprecision. Credit losses for loans that no longer share risk characteristics with the loan pools are estimated on an individual basis. Individual credit qualityloss estimates are typically performed for nonaccrual loans and modified loans classified as troubled debt restructurings (TDRs) and are based on one of several methods, including the estimated fair value of the portfolio, including a $683 million decline in criticized loans and a $41 million decline in net loan charge-offs.underlying collateral, observable market value of similar debt or the present value of expected cash flows.    

Allowance for Credit Losses on Lending-Related Commitments
ALLOCATION OF THE ALLOWANCE FOR LOAN LOSSES
 2018 2017 2016 2015 2014
(dollar amounts in millions)
Allocated
Allowance
Allowance
Ratio (a)
% (b) 
Allocated
Allowance
% (b) 
Allocated
Allowance
% (b) 
Allocated
Allowance
% (b) 
Allocated
Allowance
% (b)
December 31    
Business loans               
Commercial$492
1.54%64% $521
63% $547
63% $448
65% $379
65%
Real estate construction19
0.62
6
 19
6
 21
6
 12
4
 20
4
Commercial mortgage99
1.08
18
 91
19
 93
18
 93
18
 120
18
Lease financing4
0.70
1
 12
1
 5
1
 3
1
 2
1
International13
1.31
2
 18
2
 16
3
 23
3
 13
3
Total business loans627
1.37
91
 661
91
 682
91
 579
91
 534
91
Retail loans               
Residential mortgage9
0.43
4
 13
4
 11
4
 14
4
 14
4
Consumer35
1.40
5
 38
5
 37
5
 41
5
 46
5
Total retail loans44
0.97
9
 51
9
 48
9
 55
9
 60
9
Total loans$671
1.34%100% $712
100% $730
100% $634
100% $594
100%
(a)Allocated allowance as a percentage of related loans outstanding.
(b)Loans outstanding as a percentage of total loans.
The allowance for credit losses on lending-related commitments includes specific allowances, basedestimates current expected credit losses on individual evaluationscollective pools of certain letters of credit in a manner consistent with business loans, and allowances based on the pool of the remaining letters of credit and all unused commitments to extend credit within each internalbased on reserve factors, determined in a manner similar to business loans, multiplied by a probability of draw estimate based on historical experience and credit risk, rating.
applied to commitment amounts. The allowance for credit losses on lending-related commitments wastotaled $30 million and $44 million at December 31, 2018 compared to $42 million at 2021 and December 31, 2017. An analysis2020, respectively.
F-19

The following table presents metrics of the allowance for credit losses on lending-related commitments is presented below.losses.
December 31,20212020
Allowance for credit losses as a percentage of total loans1.26 %1.90 %
Allowance for credit losses as a percentage of total loans excluding PPP loans1.27 2.03 
Allowance for credit losses as a multiple of total nonaccrual loans2.3x2.9x
Allowance for credit losses as a multiple of total nonperforming loans2.3x2.8x
(dollar amounts in millions)         
Years Ended December 312018 2017 2016 2015 2014
Balance at beginning of year$42
 $41
 $45
 $41
 $36
Charge-offs on lending-related commitments (a)
 
 (11) (1) 
Provision for credit losses on lending-related commitments(12) 1
 7
 5
 5
Balance at end of year$30
 $42
 $41
 $45
 $41
Analysis of the Allowance for Credit Losses
The table below details net charge-offs (recoveries) as a percentage of total loans by loan category.
202120202019
(dollar amounts in millions)Net Loan
Charge-Offs
(Recoveries)
Net Charge-Offs
(Recoveries)
Ratio (a)
Net Loan
Charge-Offs
(Recoveries)
Net Charge-Offs
(Recoveries)
Ratio (a)
Net Loan
Charge-Offs
(Recoveries)
Net Charge-Offs
(Recoveries)
Ratio (a)
Commercial$(15)(0.05)%$198 0.62 %$108 0.34 %
Commercial mortgage2 0.02 (3)(0.03)(1)(0.01)
International4 0.38 — — — — 
Residential mortgage(2)(0.11)— — — — 
Consumer1 0.05 0.05 — — 
Total loans$(10)(0.02)%$196 0.38 %$107 0.21 %
(a)    Charge-offs result fromNet charge-offs (recoveries) as a percentage of related average loans outstanding.
Net loan charge-offs decreased $206 million to net loan recoveries of $10 million, or 0.02% of total loans, for the saleyear ended December 31, 2021. The $213 million decline in commercial net charge-offs included decreases of unfunded lending-related commitments.$173 million in Energy, $22 million in Technology and Life Sciences and $14 million in Business Banking.
Allocation of the Allowance for Credit Losses
20212020
(dollar amounts in millions)Allocated
Allowance
Allowance
Ratio (a)
% (b)Allocated
Allowance
% (b)
December 31,
Allowance for loan losses
Business loans
Commercial (c)$293 1.00 %60 %$508 62 %
Real estate construction28 0.94 6 62 
Commercial mortgage192 1.71 23 299 19 
Lease financing6 0.97 1 10 
International12 0.96 2 16 
Total business loans531 1.17 92 895 92 
Retail loans
Residential mortgage24 1.36 4 16 
Consumer33 1.56 4 37 
Total retail loans57 1.47 8 53 
Total loans588 1.19 %100 %$948 100 %
Allowance for credit losses on lending-related commitments
Business commitments24 35 
Retail commitments6 
Total commitments30 44 
Allowance for credit losses$618 1.26 %$992 
(a)Allocated allowance as a percentage of related loans outstanding.
(b)Loans outstanding as a percentage of total loans.
(c)Includes PPP loans with a balance of $459 million and $3.5 billion at December 31, 2021 and December 31, 2020, respectively.
For additional information regarding the allowance for credit losses, refer to the "Critical Accounting Policies"Estimates" section of this financial review and Notes 1 and 4 to the consolidated financial statements.
Nonperforming Assets
Nonperforming assets include loans on nonaccrual status, troubled debt restructured loans (TDRs)TDRs which have been renegotiated to less than the original contractual rates (reduced-rate loans) and foreclosed property.assets. TDRs include performing and nonperforming loans. Nonperformingloans, with
F-20

nonperforming TDRs areon either on nonaccrual or reduced-rate status. In accordance with the provisions of the Coronavirus Aid, Relief, and Economic Security Act (CARES Act), the Corporation elected not to consider qualifying COVID-19-related modifications, primarily deferrals, as TDRs and did not designate such loans as past due or nonaccrual. The temporary relief provided under the CARES Act applied to modifications made from the start of the COVID-19 pandemic through December 31, 2021. For additional information regarding the Corporation's accounting policies for the CARES Act, refer to Note 1 to the consolidated financial statements.

Summary of Nonperforming Assets and Past Due Loans
SUMMARY OF NONPERFORMING ASSETS AND PAST DUE LOANS
(dollar amounts in millions)         
December 312018 2017 2016 2015 2014
Nonaccrual loans:         
Business loans:         
Commercial$141
 $309
 $445
 $238
 $109
Real estate construction
 
 
 1
 2
Commercial mortgage20
 31
 46
 60
 95
Lease financing2
 4
 6
 6
 
International3
 6
 14
 8
 
Total nonaccrual business loans166
 350
 511
 313
 206
Retail loans:         
Residential mortgage36
 31
 39
 27
 36
Consumer:         
Home equity19
 21
 28
 27
 30
Other consumer
 
 4
 
 1
Total consumer19
 21
 32
 27
 31
Total nonaccrual retail loans55
 52
 71
 54
 67
Total nonaccrual loans221
 402
 582
 367
 273
Reduced-rate loans8
 8
 8
 12
 17
Total nonperforming loans229
 410
 590
 379
 290
Foreclosed property1
 5
 17
 12
 10
Total nonperforming assets$230
 $415
 $607
 $391
 $300
Gross interest income that would have been recorded had the nonaccrual and reduced-rate loans performed in accordance with original terms$19
 $31
 $38
 $27
 $25
Interest income recognized4
 7
 6
 5
 6
Nonperforming loans as a percentage of total loans0.46% 0.83% 1.20% 0.77% 0.60%
Loans past due 90 days or more and still accruing$16
 $35
 $19
 $17
 $5
Loans past due 90 days or more and still accruing as a percentage of total loans0.03% 0.07% 0.04% 0.03% 0.01%
(dollar amounts in millions)
December 3120212020
Nonaccrual loans$264 $347 
Reduced-rate loans4 
Total nonperforming loans268 350 
Foreclosed property1 
Other repossessed assets 
Total nonperforming assets$269 $359 
Nonaccrual loans as a percentage of total loans0.54 %0.66 %
Nonperforming loans as a percentage of total loans0.54 0.67 
Nonperforming assets as a percentage of total loans and foreclosed property0.55 0.69 
Loans past due 90 days or more and still accruing$27 $45 
Nonperforming assets decreased $185$90 million to $230$269 million at December 31, 2018,2021, from $415$359 million at December 31, 2017.2020. The decrease in nonperforming assets primarily reflected a $168$100 million decrease in nonaccrualnonperforming Energy loans, which are a component of commercial loans. Nonperforming loans with the largest decreases in general Middle Market, Energy and Corporate Banking. Nonperforming assets were 0.460.54 percent of total loans and foreclosed property at December 31, 2018,2021, compared to 0.840.67 percent at December 31, 2017.2020. For further information regarding the composition of nonaccrual loans, refer to Note 4 to the consolidated financial statements.
The following table presentsAs of December 31, 2021, COVID-19-related payment deferrals, which consisted of residential mortgages, totaled $22 million, or 0.04 percent of total loans, compared to $141 million, or 0.27 percent of total loans, as of December 31, 2020, reflecting expiration of initial deferrals and nominal new requests as the economy recovers from the pandemic. Loans with COVID-19-related deferred payments on a summary of TDRsthird deferral, primarily residential mortgages, totaled $22 million at December 31, 20182021 and 2017.
(in millions)   
December 312018 2017
Nonperforming TDRs:   
Nonaccrual TDRs$73
 $182
Reduced-rate TDRs8
 8
Total nonperforming TDRs81
 190
Performing TDRs (a)101
 123
Total TDRs$182
 $313
(a)TDRs that do not include a reduction in the original contractual interest rate which are performing in accordance with their modified terms.
At December 31, 2018, nonaccrual and performingwould generally be considered TDRs included $38 million and $46 million of Energy loans, respectively, compared to $82 million and $43 million, respectively at December 31, 2017.

if not for the provisions in the CARES Act.
The following table presents a summary of changes in nonaccrual loans.
(in millions)
Years Ended December 3120212020
Balance at beginning of period$347 $199 
Loans transferred to nonaccrual (a)193 482 
Nonaccrual loan gross charge-offs(70)(238)
Loans transferred to accrual status (a)(25)(3)
Nonaccrual loans sold(34)(14)
Payments/other (b)(147)(79)
Balance at end of period$264 $347 
(in millions)   
Years Ended December 312018 2017
Balance at beginning of period$402
 $582
Loans transferred to nonaccrual (a)197
 297
Nonaccrual loan gross charge-offs(103) (149)
Loans transferred to accrual status (a)(6) 
Nonaccrual loans sold(39) (40)
Payments/other (b)(230) (288)
Balance at end of period$221
 $402
(a)(a)Based on an analysis of nonaccrual loans with book balances greater than $2 million.
(b)Includes net changes related to nonaccrual loans with balances less than $2 million, payments on nonaccrual loans with book balances greater than $2 million and transfers of nonaccrual loans to foreclosed property.
There were 32 borrowerswith balances greater than $2 million.
(b)Includes net changes related to nonaccrual loans with balances less than or equal to $2 million, payments on nonaccrual loans with book balances greater than $2 million and transfers of nonaccrual loans to foreclosed property.
There were 18 borrowerswith a balance greater than $2 million, totaling $193 million, transferred to nonaccrual status in 2018,2021, a decrease of 6 when24 compared to 3842 borrowers totaling $482 million in 2017.2020. For further information about the composition of loans transferred to nonaccrual during the current period, refer to the nonaccrual information by industry category table below.
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The following table presents the composition of nonaccrual loans by balance and the related number of borrowers at December 31, 20182021 and 2017.2020.
20212020
(dollar amounts in millions)Number of
Borrowers
BalanceNumber of
Borrowers
Balance
Under $2 million580 $63 682 $83 
$2 million - $5 million14 46 20 61 
$5 million - $10 million7 54 73 
$10 million - $25 million5 69 94 
Greater than $25 million1 32 36 
Total607 $264 719 $347 
 2018 2017
(dollar amounts in millions)
Number of
Borrowers
 Balance 
Number of
Borrowers
 Balance
Under $2 million799
 $78
 939
 $85
$2 million - $5 million14
 41
 16
 47
$5 million - $10 million10
 69
 12
 93
$10 million - $25 million2
 33
 8
 130
Greater than $25 million
 
 1
 47
Total825
 $221
 976
 $402
The following table presents a summary of nonaccrual loans at December 31, 20182021 and loans transferred to nonaccrual and net loan charge-offs for the year ended December 31, 2018,2021, based on North American Industry Classification System (NAICS) categories.
December 31, 2021Year Ended December 31, 2021
(dollar amounts in millions)Nonaccrual LoansLoans Transferred to
Nonaccrual (a)
Net Loan Charge-Offs (Recoveries)
Industry Category
Transportation & Warehousing$44 17 %$24 12 %$10 (99)%
Manufacturing37 14 40 21 17 (172)
Residential Mortgage36 14 18 9 (2)(2)
Real Estate & Home Builders30 12 24 12 3 (31)
Wholesale Trade26 10   1 (5)
Services14 5 2 1 (2)18 
Mining, Quarrying and Oil & Gas Extraction14 5 28 15 (48)482 
Health Care & Social Assistance12 4 20 10 8 (74)
Information & Communication12 4     
Arts, Entertainment & Recreation9 3   1 (5)
Retail Trade3 1   1 (11)
Contractors2 1   (1)10 
Utilities  30 16 5 (49)
Other (b)25 10 7 4 (3)38 
Total$264 100 %$193 100 %$(10)100 %
 December 31, 2018 Year Ended December 31, 2018
(dollar amounts in millions)Nonaccrual Loans 
Loans Transferred to
Nonaccrual (a)
 Net Loan Charge-Offs (Recoveries)
Industry Category  
Mining, Quarrying and Oil & Gas Extraction$50
 23% $30
 15% $9
 16 %
Residential Mortgage36
 16
 10
 5
 
 
Manufacturing33
 15
 91
 45
 19
 37
Health Care & Social Assistance18
 8
 14
 7
 (1) (1)
Services14
 6
 19
 10
 10
 20
Contractors13
 6
 
 
 (2) (3)
Real Estate & Home Builders8
 4
 3
 2
 2
 4
Wholesale Trade7
 3
 19
 10
 13
 25
Information & Communication5
 2
 5
 3
 1
 2
Other (b)37
 17
 6
 3
 
 
Total$221
 100% $197
 100% $51
 100 %
(a)Based on an analysis of nonaccrual loans with book balances greater than $2 million.
(a)Based on an analysis of nonaccrual loans with book balances greater than $2 million.
(b)Consumer, excluding residential mortgage and certain personal purpose nonaccrual loans and net charge-offs, is included in the Other category.
(b)Consumer, excluding residential mortgage and certain personal purpose nonaccrual loans and net charge-offs, is included in the Other category.
Loans past due 90 days or more and still accruing interest generally represent loans that are well collateralized and in the process of collection. Loans past due 90 days or more decreased $19$18 million to $16$27 million at December 31, 2018,2021, compared to $35$45 million at December 31, 2017.2020. Loans past due 30-89 days decreased $169$251 million to $133$153 million at December 31, 2018,2021, compared to $302$404 million at December 31, 2017.2020. Loans past due 30 days or more and still accruing interest as a percentage of total loans were 0.36 percent and 0.86 percent at December 31, 2021 and December 31, 2020, respectively. An aging analysis of loans included in Note 4 to the consolidated financial statements provides further information about the balances comprising past due loans.

The following table presents a summary of total criticized loans. The Corporation's criticized list is consistent with the Special Mention, Substandard and Doubtful categories defined by regulatory authorities. Criticized loans with balances of $2 million or more on nonaccrual status or loans with balances of $1 million or more whose terms have been modified in a TDR are individually subjected to quarterly credit quality reviews, and the Corporation may establish specific allowances for such loans. A table of loans by credit quality indicator included in Note 4 to the consolidated financial statements provides further information about the balances comprising total criticized loans.
(dollar amounts in millions)
December 3120212020
Total criticized loans$1,573 $2,947 
As a percentage of total loans3.2 %5.6 %
F-22

(dollar amounts in millions)    
December 312018  2017
Total criticized loans$1,548
  $2,231
As a percentage of total loans3.1%  4.5%
Table of Contents
The $683 million$1.4 billion decrease in criticized loans induring the year ended December 31, 20182021 included decreases of $303 million in Energy and $159$540 million in general Middle Market.Market and $538 million in Energy.
The following table presents a summary of changes in foreclosed property.
(in millions) 
Years Ended December 312018  2017
Balance at beginning of period$5
  $17
Acquired in foreclosure3
  8
Write-downs
  (1)
Foreclosed property sold (a)(7)  (19)
Balance at end of period$1
  $5
(a) Net gain on foreclosed property sold$1
  $3
For further information regarding the Corporation's nonperforming assets policies, and impaired loans, refer to Note Notes 1 and Note 4 to the consolidated financial statements.
ConcentrationConcentrations of Credit Risk
Concentrations of credit risk may exist when a number of borrowers are engaged in similar activities, or activities in the same geographic region, and have similar economic characteristics that would cause them to be similarly impacted by changes in economic or other conditions. The Corporation has a concentrationconcentrations of credit risk with the commercial real estate and automotive industry.industries. All other industry concentrations, as defined by management, individually represented less than 10 percent of total loans at December 31, 2018.2021.
The following table presents a summary of loans outstanding to companies related to the automotive industry.
 2018 2017
(in millions)
Loans
Outstanding
 
Percent of
Total Loans
 
Loans
Outstanding
 
Percent of
Total Loans
December 31   
Production:       
Domestic$946
   $1,007
  
Foreign385
   337
  
Total production1,331
 2.7% 1,344
 2.7%
Dealer:       
Floor plan4,678
   4,359
  
Other3,419
   3,233
  
Total dealer8,097
 16.1% 7,592
 15.5%
Total automotive$9,428
 18.8% $8,936
 18.2%
Substantially all dealer loans are in the National Dealer Services business line. Loans in the National Dealer Services business line primarily include floor plan financing and other loans to automotive dealerships. Floor plan loans, included in commercial loans in the Consolidated Balance Sheets, totaled $4.7 billion at December 31, 2018, an increase of $319 million compared to $4.4 billion at December 31, 2017. At December 31, 2018 other loans in the National Dealer Services business line totaled $3.4 billion, including $2.0 billion of owner-occupied commercial real estate mortgage loans, compared to $3.2 billion, including $1.9 billion of owner-occupied commercial real estate mortgage loans, at December 31, 2017. Automotive lending also includes loans to borrowers involved with automotive production, primarily Tier 1 and Tier 2 suppliers. Loans to borrowers involved with automotive production totaled $1.3 billion at both December 31, 2018 and 2017.
Dealer loans, as shown in the table above, totaled $8.1 billion at December 31, 2018, of which $4.7 billion, or 60 percent, were to foreign franchises, and $2.3 billion, or 29 percent, were to domestic franchises. Other dealer loans, totaling $844 million,

or 11 percent, at December 31, 2018, include obligations where a primary franchise was indeterminable, such as loans to large public dealership consolidators and rental car, leasing, heavy truck and recreation vehicle companies.
There were $4 million of nonaccrual loans to automotive borrowers at December 31, 2018 and none at December 31, 2017. There was $5 million of automotive net loan charge-offs in 2018 and none in 2017.
For further information regarding significant group concentrations of credit risk, refer to Note 5 to the consolidated financial statements.
Commercial Real Estate Lending
At December 31, 2018,2021, the Corporation's commercial real estate portfolio represented 2429 percent of total loans. The following table summarizes the Corporation's commercial real estate loan portfolio by loan category.
December 31, 2021December 31, 2020
(in millions)Commercial Real Estate business line (a)Other (b)TotalCommercial Real Estate business line (a)Other (b)Total
Real estate construction loans$2,391 $557 $2,948 $3,657 $425 $4,082 
Commercial mortgage loans3,338 7,917 11,255 2,273 7,639 9,912 
Total commercial real estate$5,729 $8,474 $14,203 $5,930 $8,064 $13,994 
(in millions)   
December 312018 2017
Real estate construction loans:   
Commercial Real Estate business line (a)$2,687
 $2,630
Other business lines (b)390
 331
Total real estate construction loans$3,077
 $2,961
Commercial mortgage loans:   
Commercial Real Estate business line (a)$1,743
 $1,831
Other business lines (b)7,363
 7,328
Total commercial mortgage loans$9,106
 $9,159
(a)Primarily loans to real estate developers.
(a)Primarily loans to real estate developers.
(b)Primarily loans secured by owner-occupied real estate.
(b)Primarily loans secured by owner-occupied real estate.
The Corporation limits risk inherent in its commercial real estate lending activities by monitoring borrowers directly involved in the commercial real estate markets and adhering to conservative policies on loan-to-value ratios for such loans. Commercial real estate loans, consisting of real estate construction and commercial mortgage loans, totaled $12.2$14.2 billion at December 31, 2018, of which $4.42021. Of the total, $5.7 billion, or 3640 percent, were to borrowers in the Commercial Real Estate business line, which includes loans to real estate developers, an increasea decrease of $63$201 million compared to December 31, 2017. The remaining $7.8 billion, or 64 percent, of commercial2020. Commercial real estate loans in other business lines totaled $8.5 billion, or 60 percent, at December 31, 2021, an increase of $410 million compared to December 31, 2020. These loans consisted primarily of owner-occupied commercial mortgages, which bear credit characteristics similar to non-commercial real estate business loans. Generally, loans previously reported as real estate construction are classified as commercial mortgage loans upon receipt of a certificate of occupancy. In 2021, the Corporation performed an in-depth review of the status of these loans which resulted in $1.2 billion of loans previously reported as real estate construction to be classified as commercial mortgage loans as of December 31, 2021.
The real estate construction loan portfolio primarily contains loans made to long-time customers with satisfactory completion experience. Credit qualityThere were no criticized real estate construction loans in the Commercial Real Estate business line at December 31, 2021, compared to $27 million at December 31, 2020. In other business lines, criticized real estate construction loans totaled $35 million at December 31, 2021, compared to $20 million at December 31, 2020. There were no real estate construction loan portfolio was strong, with criticized loanscharge-offs in either of $31 million and $4 million atthe years ended December 31, 20182021 and 2017, respectively. There were no net charge-offs in 2018 and net recoveries of $1 million in 2017.2020.
Commercial mortgage loans are loans where the primary collateral is a lien on any real property and are primarily loans secured by owner occupiedowner-occupied real estate. Real property is generally considered primary collateral if the value of that collateral represents more than 50 percent of the commitment at loan approval. Loans in the commercial mortgage portfolio generally mature within three to five years. Criticized commercial mortgage loans in the Commercial Real Estate business line totaled $61$29 million and $72$73 million at December 31, 20182021 and December 31, 2017,2020, respectively. In other business lines, $206$219 million and $229$440 million of commercial mortgage loans were criticized at December 31, 20182021 and 2017,2020, respectively. Commercial mortgage loan net charge-offs were $1$2 million in 2018,2021, compared to net recoveries of $6$3 million in 2017.2020.
Automotive Lending - Dealer:
The following table presents a summary of dealer loans.
F-23

December 31, 2021December 31, 2020
(dollar amounts in millions)Loans
Outstanding
Percent of
Total Loans
Loans
Outstanding
Percent of
Total Loans
Dealer:
Floor plan$681 $2,344 
Other3,481 3,348 
Total dealer$4,162 8.4 %$5,692 10.9 %
Substantially all dealer loans are in the National Dealer Services business line and primarily include floor plan financing and other loans to automotive dealerships. Floor plan loans, included in commercial loans in the Consolidated Balance Sheets, totaled $681 million at December 31, 2021, a decrease of $1.7 billion compared to $2.3 billion at December 31, 2020, due to an imbalance in supply and demand impacted by a shortage in microchips used in automotive production. At December 31, 2021 and 2020, other loans in the National Dealer Services business line totaled $3.5 billion and $3.3 billion, respectively, including $2.0 billion of owner-occupied commercial real estate mortgage loans at both December 31, 2021 and 2020.
There were no nonaccrual dealer loans at both December 31, 2021, and 2020. Additionally, there were no net charge-offs of dealer loans in either of the years ended December 31, 2021 and 2020.
Automotive Lending- Production:
The following table presents a summary of loans to borrowers involved with automotive production.
December 31, 2021December 31, 2020
Loans
Outstanding (a)
Percent of
Total Loans
Loans
Outstanding (a)
Percent of
Total Loans
(dollar amounts in millions)
Production:
Domestic$789 $791 
Foreign323 302 
Total production$1,112 2.3 %$1,093 2.1 %
(a)Excludes PPP loans.
Loans to borrowers involved with automotive production, primarily Tier 1 and Tier 2 suppliers, totaled $1.1 billion at both December 31, 2021 and 2020. These borrowers have faced, and could face in the future, financial difficulties due to disruptions in auto production as well as their supply chains and logistics operations as a result of the COVID-19 pandemic. As such, management continues to monitor this portfolio.
There were no nonaccrual loans to borrowers involved with automotive production at December 31, 2021, compared to $7 million at December 31, 2020. Criticized automotive production loans were 15 percent of the automotive production portfolio at December 31, 2021, compared to 24 percent at December 31, 2020. Automotive production loan net charge-offs totaled $7 million for the year ended December 31, 2021, compared to $2 million for the same period in 2020.
For further information regarding significant group concentrations of credit risk, refer to Note 5 to the consolidated financial statements.
Residential Real Estate Lending
At December 31, 2018,2021, residential real estate loans represented 7 percent of total loans. The following table summarizes the Corporation's residential mortgage and home equity loan portfolios by geographic market.


December 31, 2021December 31, 2020


2018 2017
(dollar amounts in millions) December 31
Residential
Mortgage 
Loans
 % of
Total
 Home
Equity 
Loans
 % of
Total
 Residential
Mortgage 
Loans
 % of
Total
 Home
Equity 
Loans
 % of
Total
(dollar amounts in millions)(dollar amounts in millions)Residential
Mortgage 
Loans
Percent
of Total
Home
Equity 
Loans
% of
Total
Residential
Mortgage 
Loans
Percent
of Total
Home
Equity 
Loans
Percent
of Total
Geographic market:               Geographic market:
Michigan$406
 21% $650
 37% $387
 19% $705
 39%Michigan$434 24 %$484 32 %$428 23 %$540 34 %
California993
 50
 710
 40
 1,023
 52
 718
 40
California870 49 660 43 927 51 655 41 
Texas310
 16
 346
 20
 297
 15
 335
 18
Texas245 14 329 21 254 14 328 21 
Other Markets261
 13
 59
 3
 281
 14
 58
 3
Other Markets222 13 60 4 221 12 65 
Total$1,970
 100% $1,765
 100% $1,988
 100% $1,816
 100%Total$1,771 100 %$1,533 100 %$1,830 100 %$1,588 100 %
Residential real estate loans, which consist of traditional residential mortgages and home equity loans and lines of credit, totaled $3.7$3.3 billion at December 31, 2018.2021. The residential real estate portfolio is principally located within the Corporation's primary geographic markets. Substantially all residential real estate loans past due 90 days or more are placed on
F-24

nonaccrual status, and substantially all junior lien home equity loans that are current or less than 90 days past due are placed on nonaccrual status if full collection of the senior position is in doubt. At no later than 180 days past due, such loans are charged off to current appraised values less costs to sell.
Residential mortgages totaled $2.0$1.8 billion at December 31, 2018,2021, and were primarily larger, variable-rate mortgages originated and retained for certain private banking relationship customers. Of the $2.0$1.8 billion of residential mortgage loans outstanding, $36 million were on nonaccrual status at December 31, 2018.2021. The home equity portfolio totaled $1.8$1.5 billion at December 31, 2018,2021, of which $1.6 billion96 percent was outstanding under primarily variable-rate, interest-only home equity lines of credit, $123 million3 percent were in amortizing status and $36 million1 percent were closed-end home equity loans. Of the $1.8$1.5 billion of home equity loans outstanding, $19$12 million were on nonaccrual status at December 31, 2018.2021. A majority of the home equity portfolio was secured by junior liens at December 31, 2018.2021.
Energy Lending
The Corporation has a portfolio of Energy loans that are included primarilyentirely in commercial loans in the Consolidated Balance Sheets. Customers in the Corporation's Energy business line (approximately 170120 relationships) are engaged in three segments of the oil and gas business: exploration and production (E&P), midstream and energy services. E&P generally includes such activities as searching for potential oil and gas fields, drilling exploratory wells and operating active wells. Commitments to E&P borrowers are generally subject to semi-annual borrowing base re-determinations based on a variety of factors including updated prices (reflecting market and competitive conditions), energy reserve levels and the impact of hedging. The midstream sector is generally involved in the transportation, storage and marketing of crude and/or refined oil and gas products. The Corporation's energy services customers provide products and services primarily to the E&P segment.
The following table summarizes information about the Corporation's portfolio of Energy loans.business line.
(dollar amounts in millions)20212020
December 31OutstandingsNonaccrualCriticized (a)OutstandingsNonaccrualCriticized (a)
Exploration and production (E&P)$971 80 %$14 $46 $1,295 81 %$114 $527 
Midstream212 18   261 16 — 56 
Services21 2  12 44 — 13 
Total Energy business line$1,204 100 %$14 $58 $1,600 100 %$114 $596 
As a percentage of total Energy loans1 %5 %%37 %
(dollar amounts in millions)2018 2017
December 31OutstandingsNonaccrualCriticized (a) OutstandingsNonaccrualCriticized (a)
Exploration and production (E&P)$1,771
82%$46
$143
 $1,346
73%$94
$376
Midstream298
14

43
 295
16

37
Services94
4
2
19
 195
11
14
95
Total Energy business line$2,163
100%$48
$205
 $1,836
100%$108
$508
As a percentage of total Energy loans2%9%   6%28%
(a)Includes nonaccrual loans.
(a)Includes nonaccrual loans.
Loans in the Energy business line increased $327 million,totaled $1.2 billion, or 18 percent, to $2.2 billion at December 31, 2018, compared to $1.8 billion at December 31, 2017, or approximately 42 percent of total loans, at both December 31, 2018 and 2017.2021, a decrease of $396 million compared to December 31, 2020. Total exposure, including unused commitments to extend credit and letters of credit, was $4.5$2.9 billion (a utilization rate of 39 percent) and $4.0$3.1 billion at December 31, 20182021 and December 31, 2017,2020, respectively.
The Corporation's allowance methodology considers the various risk elements within the loan portfolio. When merited, the Corporation may incorporate a qualitative reserve component forNet credit-related Energy loans. Thererecoveries were $6$48 million and $25 million in net credit-related charge-offs in the Energy business line for the yearsyear ended December 31, 2018 and 2017, respectively.2021, compared to net charge-offs of $125 million for the year ended December 31, 2020. Nonaccrual Energy loans decreased $100 million to $14 million at December 31, 2021, compared to $114 million at December 31, 2020. Criticized loans decreased $538 million to $58 million, or 4 percent of total criticized loans, at December 31, 2021 compared to December 31, 2020.
Leveraged Loans
Certain loans in the Corporation's commercial portfolio are considered leveraged transactions. These loans are typically used for mergers, acquisitions, business recapitalizations, refinancing and equity buyouts. To help mitigate the risk associated with these loans, the Corporation focuses on middle market companies with highly capable management teams, strong sponsors and solid track records of financial performance. Industries prone to cyclical downturns and acquisitions with a high degree of integration risk are generally avoided. Other considerations include the sufficiency of collateral, the level of balance sheet leverage and the adequacy of financial covenants. During the underwriting process, cash flows are stress testedstress-tested to evaluate the borrowers' abilities to handle economic downturns and an increase in interest rates.
The FDIC defines higher-risk commercial and industrial (HR C&I) loans for assessment purposes as loans generally with leverage of four times total debt to earnings before interest, taxes and depreciation (EBITDA) as well as three times senior debt to EBITDA, excluding certain collateralized loans.
The following table summarizes information about HR C&I loans, were $2.5 billionwhich represented 6 percent and $2.7 billion5 percent of total loans at December 31, 20182021 and 2017,December 31, 2020, respectively. Criticized loans within
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(in millions)
December 31
20212020
Outstandings$2,927 $2,441 
Criticized299 418 
Net loan charge-offs recorded during the years ended December 31,18 25 

Other Sectors Most at Risk due to Economic Stress Resulting from COVID-19 Impacts
As the HR C&Ieconomy recovers, aided by additional stimulus packages and the rollout of the COVID vaccine, the Corporation has continued to monitor the lingering impacts of the pandemic on its customers. In addition to the energy, automotive production and leveraged loan portfolios, the Corporation considers the following sectors of its loan portfolio were $147 million and $284 million at December 31, 2018 and 2017, respectively. Charge-offsto be most vulnerable to financial risks from business disruptions caused by the pandemic spread mitigation efforts. For further discussion, see Item 1.A "Risk Factors" on page 13 of HR C&Ithis report.
December 31, 2021
Sector based on NAICS category (dollar amounts in millions)
Loans (a)Percent of Total LoansPercent Criticized (b)Percent Nonaccrual (c)
Retail Commercial Real Estate (d)$790 1.6 %1.3 % %
Hotels651 1.4 3.7 1.5 
Retail Goods and Services290 0.6 6.6  
Arts/Recreation206 0.4 21.5 5.0 
All other impacted sectors (e)1,106 2.2 7.4 1.7 
Total$3,043 6.2 %5.9 %1.3 %
(a)Excludes PPP loans.
(b)Sector criticized loans totaled $15 million in 2018 and $9 million in 2017.as a percentage of sector total loans.

(c)Sector nonaccrual loans as a percentage of sector total loans.
International Exposure
International assets are subject to general risks inherent(d)Loans in the conduct of businessretail commercial real estate sector are primarily included in countries, including economic uncertainties and each foreign government's regulations. Risk management practices minimize the risk inherent in international lending arrangements. These practices include structuring bilateral agreements or participating in bank facilities, which secure repayment from sources external to the borrower's country. Accordingly, such international outstandings are excluded from the cross-border risk of that country.
There were no countries with cross-border outstandings exceeding one percent of total assets at December 31, 2018, 2017 and 2016. Further, none exceeded 0.75 percent of total assets at December 31, 2018 and 2017. Mexico, with cross-border outstandings of $650 million (0.89 percent of total assets) at December 31, 2016 was the only country with outstandings between 0.75 and one percent of total assets at December 31, 2016. The Corporation's international strategy is to focus on international companies doing business in North America, with an emphasis on the Corporation's primary geographic markets.commercial real estate portfolio.
MARKET AND LIQUIDITY RISK(e)Includes airlines, restaurants and bars, childcare, coffee shops, cruise lines, education, gasoline and convenience stores, religious organizations, senior living, freight, as well as travel arrangements.
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Market and Liquidity Risk
Market risk represents the risk of loss due to adverse movementsmovement in market rates or prices, including interest rates, foreign exchange rates, commodity prices and equity prices. Liquidity risk represents the failurerisk that the Corporation does not have sufficient access to meet financial obligations coming due, resulting from an inabilityfunds to liquidate assetsmaintain its normal operations at all times, or obtain adequate funding, anddoes not have the inabilityability to easily unwindraise or offset specific exposures without significant changes in pricing, due to inadequate market depth or market disruptions.borrow funds at a reasonable cost at all times.
The Asset and Liability Policy Committee (ALCO) of the Corporation establishes and monitors compliance with the policies and risk limits pertaining to market and liquidity risk management activities. ALCO meets regularly to discuss and review market and liquidity risk management strategies and consists of executive and senior management from various areas of the Corporation, including treasury, finance, economics, lending, deposit gathering and risk management. Corporate Treasury mitigates market and liquidity risk under the direction of ALCO through the actions it takes to manage the Corporation's market, liquidity and capital positions.
The Corporation performs monthly liquidity stress testing to evaluate its ability to meet funding needs in hypothetical stressed environments. Such environments cover a series of scenarios, including both idiosyncratic and market-wide in nature, which vary in terms of duration and severity. The evaluation as of December 31, 2021 projected that sufficient sources of liquidity were available under each series of events.
In addition to assessing liquidity risk on a consolidated basis, Corporate Treasury also monitors the parent company's liquidity and has established limitsliquidity coverage requirements for the minimum number of months into the future in which the parent company can meet existing and forecastedmeeting expected obligations without the support of additional dividends from subsidiaries. ALCO's policy on liquidity policyrisk management requires the parent company to maintain sufficient liquidity to meet expected capital and debtcash obligations withover a targetperiod of 24 months but no less than 1812 months. The Corporation had liquid assets of $1.1 billion on an unconsolidated basis at December 31, 2021.
Corporate Treasury and the Enterprise Risk Division support ALCO in measuring, monitoring and managing interest rate risk as well as all other market risks. Key activities encompass: (i) providing information and analyses of the Corporation's balance sheet structure and measurement of interest rate and all other market risks; (ii) monitoring and reporting of the Corporation's positions relative to established policy limits and guidelines; (iii) developing and presenting analyses and strategies to adjust risk positions; (iv) reviewing and presenting policies and authorizations for approval; and (v) monitoring of industry trends and analytical tools to be used in the management of interest rate and all other market and liquidity risks.
Interest Rate Risk
Net interest income is the primary source of revenue for the Corporation. Interest rate risk arises in the normal course of business due to differences in the repricing and cash flow characteristics of assets and liabilities, primarily through the Corporation's core business activities of extending loans and acquiring deposits. The Corporation's balance sheet is predominantly characterized by floating-rate loans funded by core deposits. TheIncluding the impact of interest rate swaps converting floating-rate loans to fixed, the Corporation's loan composition at December 31, 20182021 was 6260 percent 30-day LIBOR,rate (primarily LIBOR), 22 percent fixed-rate, 13 percent other LIBOR (primarily 60-day), 16 percent prime, and 95 percent fixed rate. Thiscomprised of 60-and 90-day rates. Additionally, 30 percent of total loans had non-zero interest rate floors protecting against future rate declines. The composition of the loan portfolio creates sensitivity to interest rate movements due to the imbalance between the faster repricing of the floating-rate loan portfolio and more slowly repricingversus deposit products. In addition, the growth and/or contraction in the Corporation's loans and deposits may lead to changes in sensitivity to interest rate movements in the absence of mitigating actions. Examples of such actions are purchasing fixed-rate investment securities, which provide liquidity to the balance sheet and act to mitigate the inherent interest rate sensitivity, as well as hedging with interest rate swaps and options. Other mitigating factors include interest rate floors on a portion of the loan portfolio. The Corporation actively manages its exposure to interest rate risk with the principal objective of optimizing net interest income and the economic value of equity while operating within acceptable limits established for interest rate risk and maintaining adequate levels of funding and liquidity.
Since no single measurement system satisfies all management objectives, a combination of techniques is used to manage interest rate risk. These techniques examine the impact of interest rate risk on net interest income and the economic value of equity under a variety of alternative scenarios, including changes in the level, slope and shape of the yield curve utilizing multiple simulation analyses. Simulation analyses produce only estimates of net interest income as the assumptions used are inherently uncertain. Actual results may differ from simulated results due to many factors, including, but not limited to, the timing, magnitude and frequency of changes in interest rates, market conditions, regulatory impacts and management strategies.

Sensitivity of Net Interest Income to Changes in Interest Rates
The analysis of the impact of changes in interest rates on net interest income under various interest rate scenarios is management's principal risk management technique. Management models a base casebase-case net interest income under an unchanged interest rate environment. Model assumptions in this base case at December 31, 2021 included a modest increase in loan balances, loan spreads held at current levels, a moderate decrease in deposit balances and the securities portfolio held at existing
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levels. Existing derivative instruments entered into for risk management purposes as of the balance sheet dates are included in the analysis, but no additional hedging is forecasted. TheseAt December 31, 2021, these derivative instruments currently comprise interest rate swaps that convert $2.7 billion of fixed-rate medium- and long-term debt to variable rates.rates through fair value hedges and convert $5.1 billion of variable-rate loans to fixed rates through cash flow hedges. During the fourth quarter of 2021, $3.0 billion of forward starting cash flow hedges were added. Additionally, included in this analysis are $14.9 billion of loans that were subject to an average interest rate floor of 0.6 percent at December 31, 2021. This base casebase-case net interest income is then compared against interest rate scenarios in which short-term rates rise or decline 100 basis points (with a floor of zero percent) in a linear, non-parallel fashion from the base case over 12 months. The first scenario presents a 200 basis- point increase in short-term rates,months, resulting in an average increase in short-term interest rateschange of 10050 basis points over the period (+200 scenario).while long-term rates increase or decrease to a lesser degree.
As of February 15, 2022, cash flow hedges to convert $1.8 billion of variable-rate loans to fixed rates were entered into during the first quarter of 2022 which had an average rate and duration of 1.84% and 5.5 years, respectively, and varying start dates through April 2022. The second scenario presents a 200 basis-point decreasefirst quarter 2022 cash flow hedges are not included in short-termthe interest rates (but not to less than zero percent).rate sensitivity model assumptions.
Each scenario includes assumptions such as loan growth, investment security prepayment levels, depositor behavior, yield curve changes, loan and deposit pricing, and overall balance sheet mix and growth. Ingrowth which are in line with historical patterns. However, in this low rate environment, depositors have maintained a higher level of liquidity and their historical behavior may be less indicative of future trends. As a result, the +200 scenario reflects a greater decrease in deposits than we have experienced historically as rates begin to rise. Changes in actual economic activity may result in a materially different interest rate environment as well as a balance sheet structure that is different from the changes management included in its simulation analysis.
The table below, as of December 31, 20182021 and 2017,2020, displays the estimated impact on net interest income during the next 12 months by relating the base case scenario results to those from the rising and declining rate scenarios described above.
 Estimated Annual Change
(in millions)2018 2017
December 31Amount % Amount %
Change in Interest Rates:       
Rising 200 basis points$142
 6 % $197
 9 %
Declining 200 basis points(313) (12) (283) (13)
Estimated Annual Change
(dollar amounts in millions)20212020
December 31Amount%Amount%
Change in Interest Rates:Change in Interest Rates:
Rising 100 basis points$205 12 %Rising 100 basis points$161 %
Declining to zero percent(46)(3)Declining to zero percent(34)(2)
Sensitivity to rising rates decreased from December 31, 2017 to December 31, 2018, due to changes in balance sheet composition and interest-bearing deposit pricing assumptions. The December 31, 2017 risk to declining interest rates is impacted by the assumed floor on interest rates of zero percent and therefore simulates a decline of 150 basis points, while theincreased from December 31, 2018 sensitivity reflects a decline of 200 basis points2020 to December 31, 2021 due to higher short-term rates.deposit volumes, partially offset by growth in floating-rate loans with floors and the securities portfolio. There is limited remaining potential for downward movement in rates before hitting zero percent floors. Sensitivity to rising interest rates increased due to higher deposit volumes and forgiveness of fixed-rate PPP loans, partially offset by growth in floating-rate loans with floors and the securities portfolio.
Sensitivity of Economic Value of Equity to Changes in Interest Rates
In addition to the simulation analysis on net interest income, an economic value of equity analysis provides an alternative view of the interest rate risk position. The economic value of equity is the difference between the estimate of the economic value of the Corporation's financial assets, liabilities and off-balance sheet instruments, derived through discounting cash flows based on actual rates at the end of the period, and the estimated economic value after applying the estimated impact of rate movements. The Corporation primarily monitors the percentage change on the base casebase-case economic value of equity. The economic value of equity analysis is based on an immediate parallel 200100 basis point increase. The declining interest rate scenarios are based on decreasesshock with a floor of 200 basis points and 150 basis points in interest rates at December 31, 2018 and 2017, respectively.zero percent.
The table below, as of December 31, 20182021 and 2017,December 31, 2020, displays the estimated impact on the economic value of equity from the interest rate scenario described above.
(in millions)2018 2017
December 31Amount % Amount %
Change in Interest Rates:       
Rising 200 basis points$711
 6 % $1,188
 9 %
Declining 200 basis points(2,769) (21) (2,635) (20)
(dollar amounts in millions)20212020
December 31Amount%Amount%
Change in Interest Rates:Change in Interest Rates:
Rising 100 basis points$1,353 9 %Rising 100 basis points$1,793 18 %
Declining to zero percent(446)(3)Declining to zero percent(551)(6)
The sensitivity of the economic value of equity to a 200 basis point parallel increase inrising rates declined betweendecreased from December 31, 2017 and2020 to December 31, 20182021 primarily due to anduration extension and balance growth in the securities portfolio. Sensitivity to declining rates also decreased due to the increase in the modeled base case economic valuesecurities portfolio and is limited by the assumption of equity, which was drivena zero percent rate floor.

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Loans by changes in balance sheet composition. Maturity and Interest Rate Sensitivity
The percentage change in sensitivitycontractual maturity distribution of the economic value of equity to a parallel decrease in rates to zero during the same period was stable.loan portfolio is presented below.


LOAN MATURITIES AND INTEREST RATE SENSITIVITY
Loans Maturing
(in millions)
December 31, 2021
Within One
Year (a)
After One
But Within
Five Years
After Five But Within Fifteen YearsAfter Fifteen YearsTotal
Commercial loans$13,008 $15,084 $1,124$150 $29,366 
Real estate construction loans913 1,820 20213 2,948 
Commercial mortgage loans2,493 5,395 3,32542 11,255 
Lease financing50 540 50 640 
International loans593 550 65 1,208 
Residential mortgage loans4 2 2321,533 1,771 
Consumer loans529 152 1681,248 2,097 
Total$17,590 $23,543 $5,166 $2,986 $49,285 
(a)Includes demand loans, loans having no stated repayment schedule or maturity and overdrafts.
 Loans Maturing
(in millions)
December 31, 2018
Within One
Year (a)
 
After One
But Within
Five Years
 
After
Five Years
 Total
Commercial loans$15,175
 $15,706
 $1,095
 $31,976
Real estate construction loans1,408
 1,589
 80
 3,077
Commercial mortgage loans1,653
 4,793
 2,660
 9,106
International loans456
 543
 14
 1,013
Total$18,692
 $22,631
 $3,849
 $45,172
Sensitivity of loans to changes in interest rates:       
Predetermined (fixed) interest rates$711
 $2,397
 $570
 $3,678
Floating interest rates17,981
 20,234
 3,279
 41,494
Total$18,692
 $22,631
 $3,849
 $45,172
(a)
Includes demand loans, loans having no stated repayment schedule or maturity and overdrafts.
The Corporation uses investment securities and derivative instruments as asset and liability management tools with the overall objective of managing the volatility of net interest income from changes in interest rates. These tools assist management in achieving the desired interest rate risk management objectives. Activity related to derivative instruments currently involves interest rate swaps effectively converting fixed-rate medium- and long-term debt tocomposition of loans with a floating rate.maturity date over one year are presented below based on contractual terms.
Loans Maturing After One Year
(in millions)
December 31, 2021
Predetermined (Fixed) Interest RateFloating Interest RateTotal
Commercial loans$697 $15,661 $16,358 
Real estate construction loans22 2,013 2,035 
Commercial mortgage loans1,182 7,580 8,762 
Lease financing459 131 590 
International loans41 574 615 
Residential mortgage loans398 1,369 1,767 
Consumer loans47 1,521 1,568 
Total$2,846 $28,849 $31,695 
Risk Management Derivative Instruments
The Corporation uses investment securities and derivative instruments as asset and liability management tools with the overall objective of managing the volatility of net interest income from changes in interest rates. These tools assist management in achieving the desired interest rate risk management objectives. Activity related to derivative instruments currently involves interest rate swaps effectively converting fixed-rate medium- and long-term debt to a floating rate as well as variable rate loans to a fixed rate.
(in millions)
Risk Management Notional Activity
Interest
Rate
Contracts
 
Foreign
Exchange
Contracts
 Totals
(in millions)
Risk Management Notional Activity
Interest
Rate
Contracts
Foreign
Exchange
Contracts
Totals
Balance at January 1, 2017$2,275
 $717
 $2,992
Balance at January 1, 2020Balance at January 1, 2020$7,875 $330 $8,205 
Additions
 12,004
 12,004
Additions1,000 7,141 8,141 
Maturities/amortizations(500) (12,071) (12,571)Maturities/amortizations(675)(7,029)(7,704)
Balance at December 31, 2017$1,775
 $650
 $2,425
Balance at December 31, 2020Balance at December 31, 2020$8,200 $442 $8,642 
Additions(a)850
 10,095
 10,945
3,000 8,057 11,057 
Maturities/amortizations
 (10,443) (10,443)Maturities/amortizations(500)(8,047)(8,547)
Balance at December 31, 2018$2,625
 $302
 $2,927
Balance at December 31, 2021Balance at December 31, 2021$10,700 $452 $11,152 
(a)$3.0 billion of forward starting receive fixed interest rate swaps that will become effective on their contractual start dates in 2022 and 2023.
The notional amount of risk management interest rate swaps totaled $2.6$10.7 billion at December 31, 2018, and $1.8 billion at December 31, 2017, all under2021, which included fair value hedging strategies convertingthat convert $2.7 billion of fixed-rate medium- and long-term debt to a floating rate. The fair valuerate as well as cash flow hedging strategies that convert $8.1 billion of risk management interest rate swaps wasvariable-rate loans to a net unrealized loss of $2 million at both December 31, 2018 and 2017.fixed rate. Risk management interest rate swaps generated $7$163 million and $32$121 million of net interest income for the years ended December 31, 20182021 and 2017,December 31, 2020, respectively.
In addition to interest rate swaps, the Corporation employs various other types of derivative instruments as offsetting positions to mitigate exposures to foreign currency risks associated with specific assets and liabilities (e.g., customer loans or
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deposits denominated in foreign currencies). Such instruments may include foreign exchange spot and forward contracts as well as foreign exchange swap agreements.
Further information regarding risk management derivative instruments is provided in Note 8 to the consolidated financial statements.
Customer-Initiated and Other Derivative Instruments
(in millions)
Customer-Initiated and Other Notional Activity
Interest
Rate
Contracts
 
Energy
Derivative
Contracts
 
Foreign
Exchange
Contracts
 Totals
(in millions)
Customer-Initiated and Other Notional Activity
Interest
Rate
Contracts
Energy
Derivative
Contracts
Foreign
Exchange
Contracts
Totals
Balance at January 1, 2017$13,323
 $2,227
 $1,509
 $17,059
Balance at January 1, 2020Balance at January 1, 2020$17,827 $3,089 $1,013 $21,929 
Additions4,377
 1,539
 47,456
 53,372
Additions7,660 2,607 37,743 48,010 
Maturities/amortizations(2,096) (1,681) (46,987) (50,764)Maturities/amortizations(2,465)(2,484)(36,855)(41,804)
Terminations(1,215) (238) (94) (1,547)Terminations(1,501)(91)— (1,592)
Balance at December 31, 2017$14,389
 $1,847
 $1,884
 $18,120
Balance at December 31, 2020Balance at December 31, 2020$21,521 $3,121 $1,901 $26,543 
Additions4,245
 2,287
 50,220
 56,752
Additions5,370 7,992 42,173 55,535 
Maturities/amortizations(2,195) (1,481) (50,639) (54,315)Maturities/amortizations(2,713)(2,790)(42,358)(47,861)
Terminations(1,554) (3) (370) (1,927)Terminations(3,178)(553) (3,731)
Balance at December 31, 2018$14,885
 $2,650
 $1,095
 $18,630
Balance at December 31, 2021Balance at December 31, 2021$21,000 $7,770 $1,716 $30,486 
The Corporation sells and purchases interest rate caps and floors and enters into foreign exchange contracts, interest rate swaps and energy derivative contracts to accommodate the needs of customers requesting such services. Changes in the fair value of customer-initiated and other derivatives are recognized in earnings as they occur. To limit the market risk of these activities, the Corporation generally takes offsetting positions with dealers. The notional amounts of offsetting positions are included in the table above. Customer-initiated and other notional activity represented 8673 percent and 8875 percent of total interest rate, energy and foreign exchange contracts at December 31, 20182021 and 2017,2020, respectively.
Further information regarding customer-initiated and other derivative instruments is provided in Note 8 to the consolidated financial statements.
Liquidity RiskLIBOR Transition
On July 27, 2017, the United Kingdom’s Financial Conduct Authority (FCA), which regulates LIBOR, publicly announced that it intends to stop persuading or compelling banks to submit LIBOR rates after 2021. Effective March 2021, the FCA confirmed that certain LIBOR tenors will no longer be supported after December 31, 2021 and Off-Balance Sheet Arrangements
Liquidity isthat the ability to meet financial obligations through the maturity or sale of existing assets or the acquisition of additional funds. Various financial obligations,remaining tenors, including contractual obligations and commercial commitments, may require future cash paymentsthose most commonly used by the Corporation. Certain obligationsCorporation, will cease to be supported after June 30, 2023. The Corporation has substantial exposure to LIBOR-based products, including loans and derivatives, and is preparing for a transition from LIBOR toward alternative rates.
As of July 1, 2021, the Corporation was operationally ready to issue new Secured Overnight Financing Rate (SOFR)-based cash and derivative products. Additionally, as of September 30, 2021, the Corporation was operationally ready to issue new Bloomberg Short-Term Bank Yield Index (BSBY)-based cash and derivative products. The Corporation ceased originating LIBOR-based products in the fourth quarter of 2021, while communications and learning activities to support customers and colleagues are recognized onongoing. As of December 31, 2021, the Consolidated Balance Sheets, while others are off-balance sheet under U.S. generally accepted accounting principles.
The following contractual obligations table summarizes the Corporation's noncancelable contractual obligations and future required minimum payments. Refer to Notes 6, 9, 10, 11, 12, and 18Corporation estimates that approximately half of its LIBOR-based commercial loans have maturity dates prior to the consolidated financial statements for further information regarding these contractual obligations.
Contractual Obligations
 Minimum Payments Due by Period
(in millions)
December 31, 2018
Total 
Less than
1 Year
 
1-3
Years
 
3-5
Years
 
More than
5 Years
Deposits without a stated maturity (a)$53,422
 $53,422
 

 

 

Certificates of deposit and other deposits with a stated maturity (a)2,139
 1,614
 472
 28
 25
Short-term borrowings (a)44
 44
 
 
 
Medium- and long-term debt (a)6,425
 350
 675
 850
 4,550
Operating leases377
 67
 109
 74
 127
Commitments to fund low income housing partnerships165
 101
 45
 5
 14
Other long-term obligations (b)348
 87
 83
 38
 140
Total contractual obligations$62,920
 $55,685
 $1,384
 $995
 $4,856
          
Medium- and long-term debt (parent company only) (a) (c)$1,450
 $350
 $
 $850
 $250
(a)Deposits and borrowings exclude accrued interest.
(b)Includes unrecognized tax benefits.
(c)Parent company only amounts are included in the medium- and long-term debt minimum payments above.
cessation of LIBOR. Of the remaining loans with maturity dates beyond the cessation date, the Corporation estimates that 40% incorporate fallback language and is confident that it will achieve timely remediation of all other loans. In addition to contractual obligations, other commercial commitmentsremediation activity on LIBOR-based loans, the Corporation has enacted the International Swaps and Derivatives Association (ISDA) protocols related to derivatives. Once events occur that trigger a fallback, the reference rate for the variable leg of the swap will fall back from LIBOR to the ISDA Fallback Rate, which is the daily SOFR plus a spread.
The Corporation's enterprise transition timelines are closely aligned with recommendations from the Alternative Reference Rates Committee for both best practices and recommended objectives. The Corporation impact liquidity. These include unused commitments to extend credit, standby letters of credit and financial guarantees, and commercial letters of credit. The following table summarizes the Corporation's commercial commitments and expected expiration dates by period.
Commercial Commitments
 Expected Expiration Dates by Period
(in millions)
December 31, 2018
Total 
Less than
1 Year
 
1-3
Years
 
3-5
Years
 
More than
5 Years
Unused commitments to extend credit$27,267
 $7,878
 $8,733
 $7,860
 $2,796
Standby letters of credit and financial guarantees3,244
 2,791
 268
 119
 66
Commercial letters of credit39
 37
 
 2
 
Total commercial commitments$30,550
 $10,706
 $9,001
 $7,981
 $2,862
Since many of these commitments expire without being drawn upon, and each customer mustwill continue to meetalign with industry and regulatory guidelines regarding the conditions established in the contract, the total amountcessation of these commercial commitments does not necessarily represent the future cash requirementsLIBOR as well as monitor market developments for transitioning to alternative reference rates. For a discussion of the Corporation. Refervarious risks facing the Corporation in relation to the “Other Market Risks” section below and Note 8 totransition away from LIBOR, see the consolidated financial statements for a furthermarket risk discussion within “Item 1A. Risk Factors.”
Sources of these commercial commitments.
Wholesale FundingLiquidity
The Corporation maintains a liquidity position that it believes will adequately satisfy its financial obligations while taking into account potential commitment draws and deposit run-off that may accessoccur in the normal course of business. The majority of the Corporation's balance sheet is funded by customer deposits. Cash flows from loan repayments, increases in
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deposit accounts, activity in the securities portfolio and the purchased funds market serve as the Corporation's primary liquidity sources.
The Corporation satisfies incremental liquidity needs with either liquid assets or external funding sources. The Corporation had access to liquid assets of $35.3 billion at December 31, 2021, which included cash on deposit with the Federal Reserve and the portion of the investment securities portfolio that the Corporation can sell without third-party consent.
In addition, the Corporation may access external funding sources when necessary, which includesinclude FHLB advances, federal funds, reverse repurchase agreements, brokered deposits and Corporation-issued bonds. The Corporation maintains a variety of funding sources. Capacity for incremental purchased funds at December 31, 2018 included short-term FHLB advances,shelf registration statement with the Securities and Exchange Commission from which it may issue debt and equity securities. In April 2021, the Bank terminated a $15.0 billion note program, under which the Bank had the ability to purchase federal funds, sell securitiesissue up to $13.5 billion of debt at the time of termination. The termination of the program does not impact outstanding notes issued under agreementsthe program or the Bank's ability to repurchase, as well as issue deposits through brokers. notes in the future.
Purchased funds increased

decreased to $52$50 million at December 31, 2018,2021, compared to $25$66 million at December 31, 2017.2020. At December 31, 2018,2021, the Bank had pledged loans totaling $22.8$21.2 billion which provided for up to $18.9$17.0 billion of available collateralized borrowing with the FRB.
Federal Reserve Bank (FRB). The Bank is also a member of the FHLB of Dallas, Texas, which provides short- and long-term funding to its members through advances collateralized by real estate-related loans, certain government agency-backed securities and other eligible assets. Actual borrowing capacity is contingent on the amount of collateral available to be pledged to the FHLB. At December 31, 2018, $15.72021, $18.3 billion of real estate-related loans were pledged to the FHLB as blanket collateral providing $10.2 billion for current and potential future borrowings. The Corporation had $3.8 billion of outstanding borrowings maturing between 2026 and 2028 and capacity for potential future borrowings of approximately $5.0 billion.
Additionally, the Bank had the ability to issue up to $14.0 billion of debt at December 31, 2018 under an existing $15.0 billion note program which allows the issuance of debt with maturities between three months and 30 years. The Corporation also maintains a shelf registration statement with the Securities and Exchange Commission from which it may issue debt and equity securities.
The ability of the Corporation and the Bank to raise funds at competitive rates is impacted by rating agencies' views of the credit quality, liquidity, capital, earnings and earnings ofother relevant factors related to the Corporation and the Bank. As of December 31, 2018,2021, the three major rating agencies had assigned the following ratings to long-term senior unsecured obligations of the Corporation and the Bank. A security rating is not a recommendation to buy, sell, or hold securities and may be subject to revision or withdrawal at any time by the assigning rating agency. Each rating should be evaluated independently of any other rating.
Comerica IncorporatedComerica Bank
December 31, 2021RatingOutlookRatingOutlook
Standard and Poor’sBBB+StableA-Stable
Moody’s Investors ServiceA3StableA3Stable
Fitch RatingsA-StableA-Stable
Comerica IncorporatedComerica Bank
December 31, 2018RatingOutlookRatingOutlook
Standard and Poor’sBBB+StableA-Stable
Moody’s Investors ServiceA3StableA3Stable
Fitch RatingsAStableAStable
Potential Uses of Liquidity
Various financial obligations such as contractual obligations, unfunded commitments and deposit withdrawals may require future cash payments by the Corporation. Certain obligations are recognized on the Consolidated Balance Sheets, while others are off-balance sheet under U.S. generally accepted accounting principles.
The following table summarizes the Corporation's material noncancelable contractual obligations and future required minimum payments. Refer to Notes 10, 12, and 26 to the consolidated financial statements for further information regarding these contractual obligations.
F-31

Selected Contractual Obligations
Minimum Payments Due by Period
(in millions)
December 31, 2021
TotalLess than
1 Year
1-3
Years
4-5
Years
More than
5 Years
Deposits without a stated maturity (a)$80,316 $80,316 
Certificates of deposit and other deposits with a stated maturity (a)2,023 1,837 $135 $38 $13 
Medium- and long-term debt (a)2,650  1,350 750 550 
Operating leases412 60 118 90 144 
Total contractual obligations$85,401 $82,213 $1,603 $878 $707 
Medium- and long-term debt (parent company only) (a) (b)$1,650 $ $850 $250 $550 
(a)Deposits and borrowings exclude accrued interest.
(b)Parent company only amounts are included in the medium- and long-term debt minimum payments above.
In addition to contractual obligations, other commercial commitments of the Corporation satisfies liquidity needs with either liquid assets or various funding sources. Liquid assets totaled $16.3 billion at December 31, 2018, comparedimpact liquidity. These include unused commitments to $17.4 billion at December 31, 2017. Liquid assets include cashextend credit, standby letters of credit and due from banks, federal funds sold, interest-bearing deposits with banks, other short-term investmentsfinancial guarantees, and unencumbered investment securities.commercial letters of credit. The following table summarizes the Corporation's commercial commitments and expected expiration dates by period.
The Corporation performs monthly liquidity stress testing to evaluate its abilityCommercial Commitments
Expected Expiration Dates by Period
(in millions)
December 31, 2021
TotalLess than
1 Year
1-3
Years
4-5
Years
More than
5 Years
Unused commitments to extend credit$29,464 $7,887 $11,633 $6,594 $3,350 
Standby letters of credit and financial guarantees3,378 3,008 168 128 74 
Commercial letters of credit44 38 6   
Total commercial commitments$32,886 $10,933 $11,807 $6,722 $3,424 
Since many of these commitments expire without being fully drawn, and each customer must continue to meet funding needsthe conditions established in hypothetical stressed environments. Such environments coverthe contract, the total amount of these commercial commitments does not necessarily represent the future cash requirements of the Corporation. Refer to Note 8 to the consolidated financial statements for a seriesfurther discussion of broad events, distinguished in terms of duration and severity. The evaluation as of December 31, 2018 projected that sufficient sources of liquidity were available under each series of events.these commercial commitments.
Other Market Risks
Market risk related to the Corporation's trading instruments is not significant, as trading activities are limited. Certain components of the Corporation's noninterest income, primarily fiduciary income, are at risk to fluctuations in the market values of underlying assets, particularly equity and debt securities. Other components of noninterest income, primarily brokerage fees, are at risk to changes in the volume of market activity.
OPERATIONAL RISKOperational Risk
Operational risk represents the risk of loss resulting from inadequate or failed internal processes people and systems, including cybersecurity,people, or from external events.events, excluding in most cases those driven by technology (see Technology Risk below). The Corporation's definition of operational risk includes fraud; employment practice and workplace safety; clients, products and business practice; business continuity or disaster recovery; execution, delivery, and process management; third party and model risks. The definition does not include strategic or reputational risks. Although operational losses are experienced by all companies and are routinely incurred in business operations, the Corporation recognizes the need to identify and control operational losses and seeks to limit losses to a level deemed appropriate by management, as outlined in the Corporation’s risk appetite statement. The appropriate risk level is determined through consideration of the nature of the Corporation's business and the environment in which it operates, in combination with the impact from, and the possible impact on, other risks faced by the Corporation. Operational risk is mitigated through a system of internal controls that are designed to keep operating risks at appropriate levels. The Operational Risk Management Committee monitors risk management techniques and systems. The Corporation has developed a framework that includes a centralized operational risk managementreporting function in the Enterprise Risk Division and business/support unit risk liaisons responsible for managing operational risk specific to the respective business lines.
COMPLIANCE RISKTechnology Risk
    Technology risk represents the risk of loss or adverse outcomes arising from the people, processes, applications and infrastructure that support the technology environment. The Corporation's definition of technology risk includes technology delivery risk, technology investment risk, cybersecurity risk, information security risk and information management risk. Technology risk is inclusive of the risks associated with the execution of technology processes and activities by third-party
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contractors and suppliers to the Corporation. Other risk types may materialize in the event of a technology risk event, such as the risk of a financial reporting error or regulatory non-compliance, and the impact of such risks are highly interdependent with operational risk.
    The Technology Risk Management Committee, comprising senior and executive business unit managers, as well as managers responsible for technology, cybersecurity, information security and enterprise risk management, oversees technology risk. The Technology Risk Management Committee also ensures that appropriate actions are implemented in business units to mitigate risk to an acceptable level.
Compliance Risk
Compliance risk represents the risk of regulatory sanctions or financial loss resulting from the Corporation's failure to comply with all applicable laws, regulations and standards of good banking practice. The impact of such risks is highly interdependent with strategic risk, as the reputational impact from compliance breaches can be severe. Activities which may expose the Corporation to compliance risk include, but are not limited to, those dealing with the prevention of money laundering, privacy and data protection, community reinvestment initiatives, fair lending, consumer protection, employment and tax matters, over-the-counter derivative activities and other activities regulated by the Dodd-Frank Wall Street Reform and Consumer Protection Act.activities.
The Enterprise-Wide Compliance Committee, comprising senior and executive business unit managers, as well as managers responsible for compliance, audit and overall risk, oversees compliance risk. This enterprise-wide approach provides a

consistent view of compliance across the organization. The Enterprise-Wide Compliance Committee also ensures that appropriate actions are implemented in business units to mitigate risk to an acceptable level.
STRATEGIC RISKStrategic Risk
Strategic risk represents the risk of lossinadequate returns or possible losses due to impairment of reputation, failure to fully develop and execute business plans, failure to assess current and new opportunities in business, markets and products, failure to determine appropriate consideration for risks accepted, and any other event not identified in the defined risk categories of credit, market and liquidity, operational, technology or compliance risks. Mitigation of the various risk elements that represent strategic risk is achieved through variousnumerous metrics and initiatives to help the Corporation better understand, measure and report on such risks. The Executive Strategic and Pricing Committee, comprised of senior managers, oversees strategic risk and ensures that strategic risk is mitigated to appropriate levels.

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CRITICAL ACCOUNTING POLICIESESTIMATES
The Corporation’s consolidated financial statements are prepared based on the application of accounting policies, the most significant of which are described in Note 1.1. These policies require numerous estimates and strategic or economic assumptions, which may prove inaccurate or subject to variations. Changes in underlying factors, assumptions or estimates could have a material impact on the Corporation’s future financial condition and results of operations. At December 31, 2018,2021, the most critical of these significant accounting policies were the policiesestimates related to the allowance for credit losses, fair value measurement, goodwill, pension plan accounting and income taxes. These policiesestimates were reviewed with the Audit Committee of the Corporation’s Board of Directors and are discussed more fully below.
ALLOWANCE FOR CREDIT LOSSES
TheIn accordance with CECL, the allowance for credit losses, which includes both the allowance for loan losses and the allowance for credit losses on lending-related commitments, is calculated with the objective of maintaining a reserve sufficientfor current expected credit losses over the remaining contractual life of the portfolio. The Corporation uses loss factors, based on estimated probability of default for internal risk ratings and loss given default, to absorb estimated probable losses. determine the allowance for credit losses for the majority of its portfolio. Management applies loss factors to pools of loans and lending-related commitments with similar risk characteristics, calibrates these factors using economic forecasts and incorporates qualitative adjustments. For further discussion of the methodology used in the determination of the allowance for credit losses, refer to Note 1 to the consolidated financial statements. For further discussion on the economic forecast incorporated into the 2021 model, refer to the “Risk Management” section of this financial review.
Management's determination of the appropriateness of the allowance is based on periodic evaluations of the loan portfolio, lending-related commitments, current as well as forecasted economic factors and other relevant factors. This evaluationinformation. The calculation is inherently subjective as itand requires numerous estimates, includingmanagement to exercise significant judgment in developing assumptions for the loss content for internalestimate, the most significant of which are the loan risk rating process, development of economic forecasts and application of qualitative adjustments. Sensitivities are disclosed to demonstrate how changes in loan risk ratings collateral values, the amounts and timing of expected future cash flows, and for lending-related commitments, estimates of the probability of draw on unused commitments. In addition, management exercises judgment to adjust or supplement modeled estimates for factors not otherwise fully accounted for, such as the risks and uncertainties observed in current market conditions, portfolio developments and other imprecision factors.
In determiningeconomic forecast scenarios may impact the allowance for credit losses, the Corporation individually evaluates certain impaired loans, applies standard reserve factorslosses. Sensitivities only consider changes to pools of homogeneous loanseach specific assumption in isolation and lending-related commitments and incorporates qualitative adjustments. Standard loss factors, appliedtheir impact to the majority ofquantitative modeled results. They do not contemplate impacts to the Corporation's loan portfolio and lending-related commitments, are based on estimates of probabilities of default for individual risk ratings over the loss emergence period and loss given default. Loss emergence periods are used to determine the most appropriate default horizon associated with the calculation of probabilities of default. Changes to one or more of the estimates used to develop standard loss factors, or the use of different estimates,would result in a different estimated allowance for credit losses. To illustrate, if recent loss experience dictated that the estimated standard loss factors would be changed by five percent of the estimate across all loan risk ratings, the allowance for loan losses as of December 31, 2018 would change by approximately $23 million.qualitative framework.
Because standard lossLoan Risk Rating Process
Reserve factors are applied to pools of loans based on risk characteristics, including the Corporation's internal risk rating system,system; therefore, loss estimates are highly dependent on the accuracy of the risk rating assigned to each loan. The inherent imprecision in the risk rating system resulting from inaccuracy in assigning and/or entering risk ratings in the loan accounting system is monitored by the Corporation's asset quality review function and incorporatedfunction. Changes to internal risk ratings, beyond the forecasted migration inherent in the credit models, would result in a different estimated allowance for credit losses. To illustrate, if 5 percent of the individual risk ratings were adjusted down by one rating across all pools, the allowance for loan losses as of December 31, 2021 would change by approximately $3 million.
Forecasted Economic Variables
Management selects models through which historical reserve factor estimates are calibrated to economic forecasts over the reasonable and supportable forecast period based on the projected performance of specific economic variables that statistically correlate with the probability of default and loss given default pools. Loss estimates revert to historical loss experience for contractual lives beyond the forecast period. Management selects economic variables it believes to be most relevant based on the composition of the loan portfolio and customer base, including forecasted levels of employment, gross domestic product, corporate bond and treasury spreads, industrial production levels, consumer and commercial real estate price indices as well as housing statistics.
The allowance for credit losses is highly sensitive to the economic forecasts used to develop the estimate. Due to the high level of uncertainty regarding significant assumptions, such as the ultimate impact of the global pandemic, the Corporation evaluated a range of economic scenarios, including a more severe economic forecast scenario, with varying responses to current economic risks. The following table summarizes the more severe forecast scenario for the economic variables that are most impactful.


F-34

Economic VariableMore Severe Forecast
Real GDP growthContracts through third quarter 2022, followed by a gradual improvement to a growth rate above 4 percent by the end of the forecast period.
Unemployment rateCurrent levels increase to nearly 9 percent by first quarter 2023, gradually decreasing to 7 percent by the end of the forecast period.
Corporate BBB bond to 10-year Treasury bond spreadsSpreads widen to above 3 percent in the near term, gradually normalizing to below 2 percent by second quarter 2023.
Oil PricesDecline below $33 per barrel part-way through the forecast period before improving to $48 per barrel by fourth quarter 2023.
Selecting a different forecast in the current environment could result in a significantly different estimated allowance for credit losses. To illustrate, absent model overlays and other qualitative adjustment. adjustments that are part of the quarterly reserving process, if the Corporation selected the more severe scenario to inform its models, the allowance for credit losses as of December 31, 2021 would increase by approximately $148 million. However, factoring in model overlays and qualitative adjustments could result in a materially different estimate under a more severe scenario.
Qualitative Adjustments and Model Overlays
The Corporation may also includeincludes qualitative adjustments, as appropriate, intended to capture the impact of certain other uncertainties that exist but are not yet reflected in the standard reserve factors. These qualitativequantitative estimate, including foresight risk, model imprecisions and input imprecisions. Qualitative adjustments arefor foresight risk reflect the inherent imprecision in economic forecasts and may be included based on management’s analysisevaluation of factors such asdifferent forecast scenarios, ranging from more benign to more severe, and known recent events impacting the Corporation’s portfolio. Model imprecision adjustments and model overlays may be included to mitigate known limitations in the quantitative models. Input imprecision includes adjustments for portfolios where recent historical losses exceed expected losses or known recent events are expected to alter risk ratings once evidence is acquired, observable macroeconomic metrics, including consideration of regional metrics within the Corporation's footprint, andas well as a qualitative assessment of the lending environment, including underwriting standards, current economic and political conditions, and other factors affecting credit quality. Qualitative reserves at December 31, 20182021 primarily included componentsadjustments for portfolios where recent loss trends were in excess of estimated losses based on overall portfolio standard loss factors, model imprecision and changes in market conditions compareduncertainties related to the conditions that existed at the date of the most recent annual update to standard reserve factors.forecasted economic variables.
For further discussion of the methodology used in the determination of the allowance for credit losses, refer to Note 1 to the consolidated financial statements. Other Considerations
To the extent actual outcomes differ from management estimates, additional provision for credit losses may be required that would adversely impact earnings in future periods. The allowance is assigned to business segments, and any earnings impact resulting from actual outcomes differing from management estimates would primarily affect the BusinessCommercial Bank segment.
FAIR VALUE MEASUREMENT
Investment securities available-for-sale, derivatives and deferred compensation plan assets and associated liabilities are recorded at fair value on a recurring basis. Additionally, from time to time, other assets and liabilities may be recorded at fair value on a nonrecurring basis, such as impaired loans that have been reducedmeasured based on the fair value of the underlying collateral, other real estate (primarily foreclosed property), nonmarketable equity securities and certain other assets and liabilities. These nonrecurringNonrecurring fair value adjustments typically involve write-downs of individual assets or application of lower of cost or fair value accounting.
Fair value is an estimate of the exchange price that would be received to sell an asset or paid to transfer a liability in an orderly transaction (i.e., not a forced transaction, such as a liquidation or distressed sale) between market participants at the measurement date and is based on the assumptions market participants would use when pricing an asset or liability. Fair value measurement and disclosure guidance establishes a three-level hierarchy for disclosure of assets and liabilities recorded at fair

value. Notes 1 and 2 to the consolidated financial statements includesinclude information about the fair value hierarchy, the extent to which fair value is used to measure assets and liabilities, andas well as the valuation methodologies and key inputs used.
At December 31, 2018,2021, assets and liabilities measured using observable inputs that are classified as Level 1 or Level 2 represented 99.699 percent and 10099 percent of total assets and liabilities recorded at fair value, respectively. Valuations generated from model-based techniques that use at least one significant assumption not observable in the market are considered Level 3 and reflect estimates of assumptions market participants would use in pricing the asset or liability. The valuation of Level 3 assets and liabilities are considered critical accounting estimates.
GOODWILL
F-35

GOODWILL
Goodwill is initially recorded as the excess of the purchase price over the fair value of net assets acquired in a business combination and is subsequently evaluated at least annually for impairment. Goodwill impairment testing is performed annually (unless management determines an interim test is necessary) at the reporting unit level, equivalent to a business segment or one level below. The Corporation has three reporting units: the BusinessCommercial Bank, the Retail Bank and Wealth Management. At December 31, 2018 and 2017,2021, goodwill totaled $635 million, including $473 million allocated to the BusinessCommercial Bank, $101 million allocated to the Retail Bank and $61 million allocated to Wealth Management.
The Corporation performs its annual testevaluation of goodwill impairment was performed as of the beginning ofin the third quarter 2018. The Corporationof each year and may elect to perform a quantitative impairment analysis or first conduct a qualitative analysis to determine if a quantitative analysis is necessary. Additionally, the Corporation evaluates goodwill impairment on an interim basis if events or changes in circumstances between annual tests indicate additional testing may be warranted to determine if goodwill might be impaired.
The annual goodwill impairment test was performed as of the beginning of third quarter 2021. The Corporation first assessed qualitative factors to determine whether it was more likely than not that the fair value of any reporting unit was less than its carrying amount, including goodwill. Qualitative factors included economic conditions, industry and market considerations, cost factors, overall financial performance, regulatory developments and performance of the Corporation’s stock, among other events and circumstances. At the conclusion of the qualitative assessment in the third quarter 2018,2021, the Corporation determined that it was more likely than not that the fair value of each reporting unit exceeded its carrying value.
SubsequentAnalyzing goodwill includes consideration of various factors that continue to the date of the annual impairment test, the Corporation reorganized certain reporting structures. As a result, Small Business, formerly a component of the Retail Bank, became a component of the Business Bank. Accordingly, the Corporation reallocated $93 million of goodwill from the Retail Bank to Business Bank. The Corporation subsequently performed an additional qualitative impairment analysisrapidly evolve and again determined that it was more likely than not that the fair value of each reporting unit exceeded it carrying value and that performing a quantitative impairment test was not necessary.
Qualitative factors considered in the analysis of each reporting unit incorporated current economic and market conditions,for which significant uncertainty remains, including the recent Federal Reserve announcements and the impact of legislative and regulatory changes,the coronavirus global pandemic to the extent known. However, furthereconomy. Further weakening in the economic environment, such as adverse changes in interest rates, acontinued decline in the performance of the reporting units or other factors, could cause the fair value of one or more of the reporting units to fall below their carrying value, resulting in a goodwill impairment charge. Additionally, new legislative or regulatory changes not anticipated in management's expectations may cause the fair value of one or more of the reporting units to fall below the carrying value, resulting in a goodwill impairment charge. Any impairment charge would not affect the Corporation's regulatory capital ratios, tangible common equity ratio or liquidity position.
PENSION PLAN ACCOUNTING
The Corporation has a qualified and non-qualified defined benefit pension plan. Effective January 1, 2017, benefits are calculated using a cash balance formula based on years of service, age, compensation and an interest credit based on the 30-year Treasury rate. Participants under age 60 as of December 31, 2016 are eligible to receive a frozen final average pay benefit in addition to amounts earned under the cash balance formula. Participants age 60 or older as of December 31, 2016 continue to be eligible for a final average pay benefit. The Corporation makes assumptions concerning future events that will determine the amount and timing of required benefit payments, funding requirements and defined benefit pension expense. The major assumptions are the discount rate used in determining the current benefit obligation, the long-term rate of return expected on plan assets, mix of assets within the portfolio the form of payment election and the projected mortality rate.
The discount rate is determined by matching the expected cash flows of the pension plans to a portfolio of high quality corporate bonds as of the measurement date, December 31. The long-term rate of return expected on plan assets is set after considering both long-term returns in the general market and long-term returns experienced by the assets in the plan. The current target asset allocation model for the plans is provided in Note 17 to the consolidated financial statements. The expected returns on these various asset categories are blended to derive one long-term return assumption. The assets are primarily invested in certain collective investment funds, common stocks, U.S. Treasury and other U.S. government agency securities, andas well as corporate and municipal bonds and notes. The form of payment election assumption is based on market experience. Mortality rate assumptions are based on mortality tables published by third-parties such as the Society of Actuaries, (SOA), considering other available information including historical data as well as studies and publications from reputable sources.

The Corporation reviews its pension plan assumptions on an annual basis with its actuarial consultants to determine if the assumptions are reasonable and adjusts the assumptions to reflect changes in future expectations. The major assumptions used to calculate 20192022 and 2021 defined benefit plan pension expense (benefit) were as follows:
2022 2021 
Discount rate2.96 %2.71 %
Long-term rate of return on plan assets6.50 %6.50 %
Mortality table:
Base table (a)Pri-2012Pri-2012
Mortality improvement scale (a)MP-2020MP-2020
Discount rate4.37%
Long-term rate of return on plan assets6.50%
Lump sum payment election rate:
Participants before January 1, 201750%
All other participants80%
Mortality table:
Base table (a)RP-2018
Mortality improvement scale (a)MP-2018
(a)Issued by the Society of Actuaries
(a)Issued by the Society of Actuaries in October 2018.
Defined benefit plan expensebenefit is expected to decrease $9increase $8 million to a benefit of approximately $27$87 million in 2019,2022, compared to a benefit of $18$79 million in 2018.2021. This includes service cost expense of $34$40 million and a benefit from other components of $61 million.$127
Changing
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million. Service costs are included in salaries and benefits expense, while the 2019benefit from other components are included in other noninterest expenses on the Consolidated Statements of Income.
The Corporation’s pension plan is most sensitive to changes in discount rate and long-term rate of return. A change to the discount rate implies a corresponding change in interest rates that affect the value of the plan’s fixed income assets. An increase of 25 basis points to the discount rate, including the effect of higher interest rates on the plan’s fixed income assets, would result in a net increase to pension expense of $11 million, while a decrease of 25 basis points would reduce pension expense by $11 million. Increasing the long-term rate of return by 25 basis points would impact defined benefitreduce pension expense in 2019 by $7.1$8 million, and $6.4 million, respectively.while a decrease of 25 basis points would increase pension expense by $8 million.
Due to the long-term nature of pension plan assumptions, actual results may differ significantly from the actuarial-based estimates. Differences resulting in actuarial gains or losses are required to be recorded in shareholders' equity as part of accumulated other comprehensive loss and amortized to defined benefit pension expense in future years. Refer to Note 17 to the consolidated financial statements for further information.
INCOME TAXES
The calculation of the Corporation's income tax provision and tax-related accruals is complex and requires the use of estimates and judgments. The provision for income taxes is the sum of income taxes due for the current year and deferred taxes. Deferred taxes arise from temporary differences between the income tax basis and financial accounting basis of assets and liabilities. Accrued taxes represent the net estimated amount due to or to be received from taxing jurisdictions, currently or in the future, and are included in accrued income and other assets or accrued expenses and other liabilities on the Consolidated Balance Sheets. The Corporation assesses the relative risks and merits of tax positions for various transactions after considering statutes, regulations, judicial precedent and other available information and maintains tax accruals consistent with these assessments. The Corporation is subject to audit by taxing authorities that could question and/or challenge the tax positions taken by the Corporation.
Included in net deferred taxes are deferred tax assets. Deferred tax assets are evaluated for realization based on available evidence of projected future reversals of existing taxable temporary differences, assumptions made regarding future events and, when applicable, state loss carryback capacity. A valuation allowance is provided when it is more-likely-than-not that some portion of the deferred tax asset will not be realized. In December 2017, the Tax Cuts and Jobs Act (the "Act") was signed into law, resulting in the reduction of the federal tax rate from 35 percent to 21 percent. This resulted in a $107 million charge to adjust deferred taxes as a result of the decline in the federal tax rate in 2017, with an $8 million downward revision to the estimated impact recorded in 2018 for a total remeasurement of the Corporation'sDetermining whether deferred tax balanceassets are realizable is subjective and requires the use of $99 million.significant judgment.
The Corporation assesses the relative risks and merits of tax positions for various transactions after considering statutes, regulations, judicial precedent and other available information and maintains tax accruals consistent with these assessments. This assessment is complex and requires judgment. The Corporation is subject to audit by taxing authorities that could question and/or challenge the tax positions taken by the Corporation. Changes in the estimate of accrued taxes occur due to changes in tax law, interpretations of existing tax laws, new judicial or regulatory guidance, and the status of examinations conducted by taxing authorities that impact the relative risks and merits of tax positions taken by the Corporation. These changes, when they occur, impact the estimate of accrued taxes and could be significant to the operating results of the Corporation. For further information on tax accruals and related risks, see Note 18 to the consolidated financial statements.



F-37

SUPPLEMENTAL FINANCIAL DATA
The following table provides a reconciliationCorporation believes non-GAAP measures are meaningful because they reflect adjustments commonly made by management, investors, regulators and analysts to evaluate the adequacy of non-GAAP financial measurescommon equity and our performance trends. Tangible common equity is used in this financial review with financial measuresby the Corporation to measure the quality of capital and the return relative to balance sheet risk.
Common equity tier 1 capital ratio removes preferred stock from the Tier 1 capital ratio as defined by GAAP.
(dollar amounts in millions)         
December 312018 2017 2016 2015 2014
Tangible Common Equity Ratio:         
Common shareholders' equity$7,507
 $7,963
 $7,796
 $7,560
 $7,402
Less:         
Goodwill635
 635
 635
 635
 635
Other intangible assets6
 8
 10
 14
 15
Tangible common equity$6,866
 $7,320
 $7,151
 $6,911
 $6,752
Total assets$70,818
 $71,567
 $72,978
 $71,877
 $69,186
Less:         
Goodwill635
 635
 635
 635
 635
Other intangible assets6
 8
 10
 14
 15
Tangible assets$70,177
 $70,924
 $72,333
 $71,228
 $68,536
Common equity ratio10.60% 11.13% 10.68% 10.52% 10.70%
Tangible common equity ratio9.78
 10.32
 9.89
 9.70
 9.85
Tangible Common Equity per Share of Common Stock:         
Common shareholders' equity$7,507
 $7,963
 $7,796
 $7,560
 $7,402
Tangible common equity6,866
 7,320
 7,151
 6,911
 6,752
Shares of common stock outstanding (in millions)160
 173
 175
 176
 179
Common shareholders' equity per share of common stock$46.89
 $46.07
 $44.47
 $43.03
 $41.35
Tangible common equity per share of common stock42.89
 42.34
 40.79
 39.33
 37.72
and calculated in conformity with bank regulations. The tangible common equity ratio removes the effect of intangible assets from capital and total assets. Tangible common equity per share of common stock removes the effect of intangible assets from common shareholdersshareholders' equity per share of common stock.
The following table provides a reconciliation of non-GAAP financial measures and regulatory ratios used in this financial review with financial measures defined by GAAP.
(dollar amounts in millions)
December 3120212020
Common Equity Tier 1 Capital (a):
Tier 1 capital$7,458 $7,313 
Less:
Fixed-rate reset non-cumulative perpetual preferred stock394 394 
Common equity tier 1 capital$7,064 $6,919 
Risk-weighted assets$69,708 $66,931 
Tier 1 capital ratio10.70 %10.93 %
Common equity tier 1 capital ratio10.13 10.34 
Tangible Common Equity Ratio:
Total shareholders' equity$7,897 $8,050 
Less:
Fixed-rate reset non-cumulative perpetual preferred stock394 394 
Common shareholders' equity$7,503 $7,656 
Less:
Goodwill635 635 
Other intangible assets (b)11 
Tangible common equity$6,857 $7,020 
Total assets$94,616 $88,129 
Less:
Goodwill635 635 
Other intangible assets (b)11 
Tangible assets$93,970 $87,493 
Common equity ratio7.93 %8.69 %
Tangible common equity ratio7.30 8.02 %
Tangible Common Equity per Share of Common Stock:
Common shareholders' equity$7,503 $7,656 
Tangible common equity6,857 7,020 
Shares of common stock outstanding (in millions)131 139 
Common shareholders' equity per share of common stock$57.41 $55.01 
Tangible common equity per share of common stock52.46 50.43 
(a) Ratios reflect deferral of CECL model impact as calculated per regulatory guidance. The deferred amount was zero and $72 million at December 31, 2021 and 2020, respectively.
(b) In first quarter 2021, the Corporation believes these measurements are meaningful measuresacquired an intangible asset of capital adequacy used by investors, regulators, management and others$13 million to evaluate the adequacybe amortized over a period of common equity and to compare against other companies in the industry.10 years.

F-38


FORWARD-LOOKING STATEMENTS
This report includes forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. In addition, the Corporation may make other written and oral communications from time to time that contain such statements. All statements regarding the Corporation's expected financial position, strategies and growth prospects including the GEAR Up initiative, andas well as general economic conditions expected to exist in the future are forward-looking statements. The words, “anticipates,” “believes,” "contemplates," “feels,” “expects,” “estimates,” “seeks,” “strives,” “plans,” “intends,” “outlook,” “forecast,” “position,” “target,” “mission,” “assume,” “achievable,” “potential,” “strategy,” “goal,” “aspiration,” “opportunity,” “initiative,” “outcome,” “continue,” “remain,” “maintain,” "on track," “trend,” “objective,” “looks forward,” "projects," "models" and variations of such words and similar expressions, or future or conditional verbs such as “will,” “would,” “should,” “could,” “might,” “can,” “may” or similar expressions, as they relate to the Corporation or its management, are intended to identify forward-looking statements. The Corporation cautions that forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date the statement is made, and the Corporation does not undertake to update forward-looking statements to reflect facts, circumstances, assumptions or events that occur after the date the forward-looking statements are made. Actual results could differ materially from those anticipated in forward-looking statements and future results could differ materially from historical performance.
In addition to factors mentioned elsewhere in this report or previously disclosed in the Corporation's SEC reports (accessible on the SEC's website at www.sec.gov or on the Corporation's website at www.comerica.com), actual results could differ materially from forward-looking statements and future results could differ materially from historical performance due to a variety of reasons, including but not limited to, the following factors:
general political, economicunfavorable developments concerning credit quality could adversely affect the Corporation's financial results;
declines in the businesses or industry conditions, either domesticallyindustries of the Corporation's customers could cause increased credit losses or internationally,decreased loan balances, which could adversely affect the Corporation;
changes in customer behavior may be less favorable than expected;adversely impact the Corporation's business, financial condition and results of operations;
governmental monetary and fiscal policies may adversely affect the financial services industry, and therefore impact the Corporation's financial condition and results of operations;
the Corporation’s operational or security systems or infrastructure, or those of third parties,fluctuations in interest rates and their impact on deposit pricing could fail or be breached;
adversely affect the Corporation's net interest income and balance sheet;
developments impacting LIBOR and other interest rate benchmarks could adversely affect the Corporation;
the Corporation relies on other companiesmust maintain adequate sources of funding and liquidity to provide certain key componentsmeet regulatory expectations, support its operations and fund outstanding liabilities;
reduction in the Corporation's credit ratings could adversely affect the Corporation and/or the holders of its delivery systems, and certain failuressecurities;
the soundness of other financial institutions could materially adversely affect operations;the Corporation;
security risks, including denial of service attacks, hacking, social engineering attacks targeting the Corporation’s colleagues and customers, malware intrusion or data corruption attempts, and identity theft, could result in the disclosure of confidential information;
proposed revenue enhancements and efficiency improvements under the GEAR Up initiative may not be achieved;
the Corporation must maintain adequate sources of funding and liquidity to meet regulatory expectations, support its operations and fund outstanding liabilities;
compliance with more stringent capital requirements may adversely affect the Corporation;
declines in the businesses or industries of the Corporation's customers could cause increased credit losses or decreased loan balances, which could adversely affect the Corporation;
unfavorable developments concerning credit quality could adversely affect the Corporation's financial results;
changes in regulation or oversight may have a material adverse impact on the Corporation's operations;
cybersecurity and data privacy are areas of heightened legislative and regulatory focus;
fluctuations in interest ratesthe Corporation’s operational or security systems or infrastructure, or those of third parties, could fail or be breached;
the Corporation relies on other companies to provide certain key components of its delivery systems, and their impact on deposit pricingcertain failures could materially adversely affect the Corporation's net interest income and balance sheet;operations;
developments impacting LIBOR and other interest rate benchmarks could adversely affect the Corporation;
reduction in the Corporation's credit ratings could adversely affect the Corporation and/or the holders of its securities;
damage to the Corporation’s reputation could damage its businesses;
the Corporation may not be able to utilize technology to develop, market and deliver new products and services to its customers;
competitive product and pricing pressures within the Corporation's markets may change;
the soundness of other financial institutions could adversely affect the Corporation;
the introduction, implementation, withdrawal, success and timing of business initiatives and strategies may be less successful or may be different than anticipated, which could adversely affect the Corporation's business;
changes in customer behavior may adversely impact the Corporation's business, financial condition and results of operations;
management's ability to maintain and expand customer relationships may differ from expectations;
methods of reducing risk exposures might not be effective;
catastrophic events, including, but not limited to, hurricanes, tornadoes, earthquakes, fires, droughts and floods, may adversely affect the general economy, financial and capital markets, specific industries, and the Corporation;
the impacts of future legislative, administrative or judicial changes or interpretations to tax regulations are unknown;
any future strategic acquisitions or divestitures may present certain risks to the Corporation's business and operations;
management's ability to retain key officers and employees may change;
legal and regulatory proceedings and related financial services industry matters, including those directly involving the Corporation and its subsidiaries, could adversely affect the Corporation or the financial services industry in general;
the Corporation may incur losses due to fraud;
terrorist activitiescontrols and procedures may fail to prevent or other hostilitiesdetect all errors or acts of fraud;
changes in regulation or oversight, or changes in Comerica’s status with respect to existing regulations or oversight, may have a material adverse impact on the Corporation's operations;
compliance with more stringent capital requirements may adversely affect the Corporation;
the impacts of future legislative, administrative or judicial changes or interpretations to tax regulations are unknown;
damage to the Corporation’s reputation could cause adverse effects;damage its businesses;

the Corporation may not be able to utilize technology to develop, market and deliver new products and services to its customers;
competitive product and pricing pressures within the Corporation's markets may change;
the introduction, implementation, withdrawal, success and timing of business initiatives and strategies may be less successful or may be different than anticipated, which could adversely affect the Corporation's business;
management's ability to maintain and expand customer relationships may differ from expectations;
management's ability to retain key officers and employees may change;
F-39

any future strategic acquisitions or divestitures may present certain risks to the Corporation's business and operations;
impacts from the COVID-19 global pandemic;
general political, economic or industry conditions, either domestically or internationally, may be less favorable than expected;
methods of reducing risk exposures might not be effective;
catastrophic events may adversely affect the general economy, financial and capital markets, specific industries, and the Corporation;
changes in accounting standards could materially impact the Corporation's financial statements;
the Corporation's accounting policies and processes are critical to the reporting of financial condition and results of operations and require management to make estimates about matters that are uncertain; and
controls and procedures may fail to prevent or detect all errors or acts of fraud; and
the Corporation's stock price can be volatile.

F-40


CONSOLIDATED BALANCE SHEETS
Comerica Incorporated and Subsidiaries

(in millions, except share data)   (in millions, except share data)
December 312018 2017December 3120212020
   (recast)
ASSETS   ASSETS
Cash and due from banks$1,390
 $1,438
Cash and due from banks$1,236 $1,031 
   
Interest-bearing deposits with banks3,171
 4,407
Interest-bearing deposits with banks21,443 14,736 
Other short-term investments134
 96
Other short-term investments197 172 
   
Investment securities available-for-sale12,045
 10,938
Investment securities available-for-sale16,986 15,028 
Investment securities held-to-maturity
 1,266
   
Commercial loans31,976
 31,060
Commercial loans29,366 32,753 
Real estate construction loans3,077
 2,961
Real estate construction loans2,948 4,082 
Commercial mortgage loans9,106
 9,159
Commercial mortgage loans11,255 9,912 
Lease financing507
 468
Lease financing640 594 
International loans1,013
 983
International loans1,208 926 
Residential mortgage loans1,970
 1,988
Residential mortgage loans1,771 1,830 
Consumer loans2,514
 2,554
Consumer loans2,097 2,194 
Total loans50,163
 49,173
Total loans49,285 52,291 
Less allowance for loan losses(671) (712)
Allowance for loan lossesAllowance for loan losses(588)(948)
Net loans49,492
 48,461
Net loans48,697 51,343 
Premises and equipment475
 466
Premises and equipment454 459 
Accrued income and other assets4,111
 4,495
Accrued income and other assets5,603 5,360 
Total assets$70,818
 $71,567
Total assets$94,616 $88,129 
   
LIABILITIES AND SHAREHOLDERS’ EQUITY   LIABILITIES AND SHAREHOLDERS’ EQUITY
Noninterest-bearing deposits$28,690
 $32,071
Noninterest-bearing deposits$45,800 $39,420 
   
Money market and interest-bearing checking deposits22,560
 21,500
Money market and interest-bearing checking deposits31,349 28,540 
Savings deposits2,172
 2,152
Savings deposits3,167 2,710 
Customer certificates of deposit2,131
 2,165
Customer certificates of deposit1,973 2,133 
Foreign office time deposits8
 15
Foreign office time deposits50 66 
Total interest-bearing deposits26,871
 25,832
Total interest-bearing deposits36,539 33,449 
Total deposits55,561
 57,903
Total deposits82,339 72,869 
Short-term borrowings44
 10
Accrued expenses and other liabilities1,243
 1,069
Accrued expenses and other liabilities1,584 1,482 
Medium- and long-term debt6,463
 4,622
Medium- and long-term debt2,796 5,728 
Total liabilities63,311
 63,604
Total liabilities86,719 80,079 
   
Fixed-rate reset non-cumulative perpetual preferred stock, series A, no par value, $100,000 liquidation preference per share:Fixed-rate reset non-cumulative perpetual preferred stock, series A, no par value, $100,000 liquidation preference per share:
Authorized - 4,000 sharesAuthorized - 4,000 shares
Issued - 4,000 sharesIssued - 4,000 shares394 394 
Common stock - $5 par value:   Common stock - $5 par value:
Authorized - 325,000,000 shares   Authorized - 325,000,000 shares
Issued - 228,164,824 shares1,141
 1,141
Issued - 228,164,824 shares1,141 1,141 
Capital surplus2,148
 2,122
Capital surplus2,175 2,185 
Accumulated other comprehensive loss(609) (451)
Accumulated other comprehensive (loss) incomeAccumulated other comprehensive (loss) income(212)64 
Retained earnings8,781
 7,887
Retained earnings10,494 9,727 
Less cost of common stock in treasury - 68,081,176 shares at 12/31/18 and 55,306,483 shares at 12/31/17(3,954) (2,736)
Less cost of common stock in treasury - 97,476,872 shares at 12/31/2021 and 88,997,430 shares at 12/31/2020Less cost of common stock in treasury - 97,476,872 shares at 12/31/2021 and 88,997,430 shares at 12/31/2020(6,095)(5,461)
Total shareholders’ equity7,507
 7,963
Total shareholders’ equity7,897 8,050 
Total liabilities and shareholders’ equity$70,818
 $71,567
Total liabilities and shareholders’ equity$94,616 $88,129 
See notes to consolidated financial statements.

F-41

Table of Contents

CONSOLIDATED STATEMENTS OF INCOME
Comerica Incorporated and Subsidiaries

(in millions)     
(in millions, except per share data)(in millions, except per share data)
Years Ended December 312018 2017 2016Years Ended December 31202120202019
(recast)(recast)
INTEREST INCOME     INTEREST INCOME
Interest and fees on loans$2,262
 $1,872
 $1,635
Interest and fees on loans$1,594 $1,773 $2,439 
Interest on investment securities265
 250
 247
Interest on investment securities280 291 297 
Interest on short-term investments92
 60
 27
Interest on short-term investments27 29 71 
Total interest income2,619
 2,182
 1,909
Total interest income1,901 2,093 2,807 
INTEREST EXPENSE     INTEREST EXPENSE
Interest on deposits122
 42
 40
Interest on deposits22 101 262 
Interest on short-term borrowings

1
 3
 
Interest on short-term borrowings 
Interest on medium- and long-term debt144
 76
 72
Interest on medium- and long-term debt35 80 197 
Total interest expense267
 121
 112
Total interest expense57 182 468 
Net interest income2,352
 2,061
 1,797
Net interest income1,844 1,911 2,339 
Provision for credit losses(1) 74
 248
Provision for credit losses(384)537 74 
Net interest income after provision for credit losses2,353
 1,987
 1,549
Net interest income after provision for credit losses2,228 1,374 2,265 
NONINTEREST INCOME     NONINTEREST INCOME
Card fees244
 333
 303
Card fees298 270 257 
Fiduciary incomeFiduciary income231 209 206 
Service charges on deposit accounts211
 227
 219
Service charges on deposit accounts195 185 203 
Fiduciary income206
 198
 190
Commercial lending fees85
 85
 89
Commercial lending fees104 77 91 
Foreign exchange income47
 45
 42
Derivative incomeDerivative income99 67 76 
Bank-owned life insuranceBank-owned life insurance43 44 41 
Letter of credit fees40
 45
 50
Letter of credit fees40 37 38 
Bank-owned life insurance39
 43
 42
Brokerage fees27
 23
 19
Brokerage fees14 21 28 
Net securities losses(19) 
 
Net securities losses — (7)
Other noninterest income96
 108
 97
Other noninterest income99 91 77 
Total noninterest income976
 1,107
 1,051
Total noninterest income1,123 1,001 1,010 
NONINTEREST EXPENSES     NONINTEREST EXPENSES
Salaries and benefits expense1,009
 961
 989
Salaries and benefits expense1,133 1,019 1,020 
Outside processing fee expense255
 366
 336
Outside processing fee expense266 242 264 
Net occupancy expense152
 154
 157
Occupancy expenseOccupancy expense161 156 154 
Software expense125
 126
 119
Software expense155 154 117 
Restructuring charges53
 45
 93
Equipment expense48
 45
 53
Equipment expense50 49 50 
Advertising expenseAdvertising expense35 35 34 
FDIC insurance expense42
 51
 54
FDIC insurance expense22 33 23 
Advertising expense30
 28
 21
Other noninterest expenses80
 84
 108
Other noninterest expenses39 66 75 
Total noninterest expenses1,794
 1,860
 1,930
Total noninterest expenses1,861 1,754 1,737 
Income before income taxes1,535
 1,234
 670
Income before income taxes1,490 621 1,538 
Provision for income taxes300
 491
 193
Provision for income taxes322 124 336 
NET INCOME1,235
 743
 477
NET INCOME1,168 497 1,202 
Less income allocated to participating securities8
 5
 4
Less:Less:
Income allocated to participating securitiesIncome allocated to participating securities5 
Preferred stock dividendsPreferred stock dividends23 13 — 
Net income attributable to common shares$1,227
 $738
 $473
Net income attributable to common shares$1,140 $482 $1,195 
Earnings per common share:     Earnings per common share:
Basic$7.31
 $4.23
 $2.74
Basic$8.45 $3.45 $7.98 
Diluted7.20
 4.14
 2.68
Diluted8.35 3.43 7.90 
     
Cash dividends declared on common stock309
 193
 154
Cash dividends declared on common stock365 378 398 
Cash dividends declared per common share1.84
 1.09
 0.89
Cash dividends declared per common share2.72 2.72 2.68 
See notes to consolidated financial statements.

F-42

Table of Contents

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Comerica Incorporated and Subsidiaries

(in millions)     (in millions)
Years Ended December 312018 2017 2016Years Ended December 31202120202019
     (recast)(recast)
NET INCOME$1,235
 $743
 $477
NET INCOME$1,168 $497 $1,202 
OTHER COMPREHENSIVE (LOSS) INCOMEOTHER COMPREHENSIVE (LOSS) INCOME
Unrealized (losses) gains on investment securities:Unrealized (losses) gains on investment securities:
Net unrealized holding (losses) gains arising during the periodNet unrealized holding (losses) gains arising during the period(406)191 257 
Less: Reclassification adjustment for net securities losses included in net incomeLess: Reclassification adjustment for net securities losses included in net income— — (8)
     
OTHER COMPREHENSIVE (LOSS) INCOME     
     
Unrealized losses on investment securities:     
Net unrealized holding losses arising during the period(69) (81) (70)
Less:     
Reclassification adjustment for net securities losses included in net income(20) 
 
Net losses realized as a yield adjustment in interest on investment securities
 (3) (3)
Change in net unrealized losses before income taxes(49) (78) (67)
     
Change in net unrealized (losses) gains before income taxesChange in net unrealized (losses) gains before income taxes(406)191 265 
Net (losses) gains on cash flow hedges:Net (losses) gains on cash flow hedges:
Net cash flow hedge (losses) gains arising during the period before income taxesNet cash flow hedge (losses) gains arising during the period before income taxes(35)229 44 
Less: Net cash flow hedge gains recognized in interest and fees on loans before taxesLess: Net cash flow hedge gains recognized in interest and fees on loans before taxes95 70 — 
Change in net cash flow hedge (losses) gains before income taxesChange in net cash flow hedge (losses) gains before income taxes(130)159 44 
Defined benefit pension and other postretirement plans adjustment:     Defined benefit pension and other postretirement plans adjustment:
Actuarial (loss) gain arising during the period(191) 72
 (134)
Actuarial gain arising during the periodActuarial gain arising during the period159 128 157 
Prior service credit arising during the period
 
 234
Prior service credit arising during the period1 — — 
Adjustments for amounts recognized as components of net periodic benefit cost:     Adjustments for amounts recognized as components of net periodic benefit cost:
Amortization of actuarial net loss61
 51
 46
Amortization of actuarial net loss40 47 42 
Amortization of prior service credit(27) (27) (7)Amortization of prior service credit(25)(27)(27)
Change in defined benefit pension and other postretirement plans adjustment before income taxes(157) 96
 139
Change in defined benefit pension and other postretirement plans adjustment before income taxes175 148 172 
     
Total other comprehensive (loss) income before income taxes(206) 18
 72
Total other comprehensive (loss) income before income taxes(361)498 481 
(Benefit) provision for income taxes(47) (1) 26
(Benefit) provision for income taxes(85)118 111 
Total other comprehensive (loss) income, net of tax(159) 19
 46
Total other comprehensive (loss) income, net of tax(276)380 370 
     
COMPREHENSIVE INCOME$1,076
 $762
 $523
COMPREHENSIVE INCOME$892 $877 $1,572 
See notes to consolidated financial statements.

F-43

Table of Contents
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY
Comerica Incorporated and Subsidiaries

Accumulated
NonredeemableCommon StockOtherTotal
Common Stock   
Accumulated
Other
Comprehensive
Loss
     
Total
Shareholders’
Equity
PreferredSharesCapitalComprehensiveRetainedTreasuryShareholders'
(in millions, except per share data)
Shares
Outstanding
 Amount 
Capital
Surplus
 
Retained
Earnings
 
Treasury
Stock
 (in millions, except per share data)StockOutstandingAmountSurplus(Loss) IncomeEarningsStockEquity
BALANCE AT DECEMBER 31, 2015175.7
 $1,141
 $2,173
 $(429) $7,084
 $(2,409) $7,560
Net income
 
 
 
 477
 
 477
Other comprehensive income, net of tax
 
 
 46
 
 
 46
Cash dividends declared on common stock ($0.89 per share)
 
 
 
 (154) 
 (154)
BALANCE AT DECEMBER 31, 2018 (recast)BALANCE AT DECEMBER 31, 2018 (recast)$— 160.1 $1,141 $2,148 $(686)$8,858 $(3,954)$7,507 
Cumulative effect of change in accounting principlesCumulative effect of change in accounting principles— — — — — (14)— (14)
Net income (recast)Net income (recast)— — — — — 1,202 — 1,202 
Other comprehensive income, net of tax (recast)Other comprehensive income, net of tax (recast)— — — — 370 — — 370 
Cash dividends declared on common stock ($2.68 per share)Cash dividends declared on common stock ($2.68 per share)— — — — — (398)— (398)
Purchase of common stock(6.8) 
 
 
 
 (310) (310)Purchase of common stock— (18.7)— — — — (1,380)(1,380)
Net issuance of common stock under employee stock plans4.1
 
 (15) 
 (27) 185
 143
Net issuance of common stock under employee stock plans— 0.7 — (13)— (29)43 
Net issuance of common stock for warrants2.3
 
 (57) 
 (49) 106
 
Share-based compensation
 
 34
 
 
 
 34
Share-based compensation— — — 39 — — — 39 
BALANCE AT DECEMBER 31, 2016175.3
 1,141
 2,135
 (383) 7,331
 (2,428) 7,796
BALANCE AT DECEMBER 31, 2019 (recast)BALANCE AT DECEMBER 31, 2019 (recast)— 142.1 1,141 2,174 (316)9,619 (5,291)7,327 
Cumulative effect of change in accounting principle
 
 3
 
 (2) 
 1
Cumulative effect of change in accounting principle— — — — — 13 — 13 
Net income
 
 
 
 743
 
 743
Other comprehensive income, net of tax
 
 
 19
 
 
 19
Cash dividends declared on common stock ($1.09 per share)
 
 
 
 (193) 
 (193)
Net income (recast)Net income (recast)— — — — — 497 — 497 
Other comprehensive income, net of tax (recast)Other comprehensive income, net of tax (recast)— — — — 380 — — 380 
Cash dividends declared on common stock ($2.72 per share)Cash dividends declared on common stock ($2.72 per share)— — — — — (378)— (378)
Cash dividends declared on preferred stockCash dividends declared on preferred stock— — — — — (13)— (13)
Purchase of common stock(7.5) 
 
 
 
 (544) (544)Purchase of common stock— (3.4)— — — — (194)(194)
Issuance of preferred stockIssuance of preferred stock394 — — — — — — 394 
Net issuance of common stock under employee stock plans3.3
 
 (24) 
 (26) 152
 102
Net issuance of common stock under employee stock plans— 0.5 — (13)— (11)24 — 
Net issuance of common stock for warrants1.8
 
 (30) 
 (53) 83
 
Share-based compensation
 
 39
 
 
 
 39
Share-based compensation— — — 24 — — — 24 
Reclassification of certain deferred tax effects
 
 
 (87) 87
 
 
Other
 
 (1) 
 
 1
 
BALANCE AT DECEMBER 31, 2017172.9
 1,141
 2,122
 (451) 7,887
 (2,736) 7,963
Cumulative effect of change in accounting principles
 
 
 1
 14
 
 15
BALANCE AT DECEMBER 31, 2020 (recast)BALANCE AT DECEMBER 31, 2020 (recast)394 139.2 $1,141 $2,185 $64 $9,727 $(5,461)$8,050 
Net income
 
 
 
 1,235
 
 1,235
Net income     1,168  1,168 
Other comprehensive loss, net of tax
 
 
 (159) 
 
 (159)Other comprehensive loss, net of tax    (276)  (276)
Cash dividends declared on common stock ($1.84 per share)
 
 
 
 (309) 
 (309)
Cash dividends declared on common stock ($2.72 per share)Cash dividends declared on common stock ($2.72 per share)     (365) (365)
Cash dividends declared on preferred stockCash dividends declared on preferred stock     (23) (23)
Purchase of common stock(14.9) 
 (3) 
 
 (1,326) (1,329)Purchase of common stock (9.5) (24)  (699)(723)
Net issuance of common stock under employee stock plans1.5
 
 (9) 
 (23) 75
 43
Net issuance of common stock under employee stock plans 1.0  (27) (13)65 25 
Net issuance of common stock for warrants0.6
 
 (10) 
 (23) 33
 
Share-based compensation
 
 48
 
 
 
 48
Share-based compensation   41    41 
BALANCE AT DECEMBER 31, 2018160.1
 $1,141
 $2,148
 $(609) $8,781
 $(3,954) $7,507
BALANCE AT DECEMBER 31, 2021BALANCE AT DECEMBER 31, 2021$394 130.7 $1,141 $2,175 $(212)$10,494 $(6,095)$7,897 
See notes to consolidated financial statements.





F-44

Table of Contents
CONSOLIDATED STATEMENTS OF CASH FLOWS
Comerica Incorporated and Subsidiaries



   
(in millions)     (in millions)
Years Ended December 312018 2017 2016Years Ended December 31202120202019
(recast)(recast)
OPERATING ACTIVITIES     OPERATING ACTIVITIES
Net income$1,235
 $743
 $477
Net income$1,168 $497 $1,202 
Adjustments to reconcile net income to net cash provided by operating activities:     Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses(1) 74
 248
Provision for credit losses(384)537 74 
Provision (benefit) for deferred income taxes24
 79
 (51)Provision (benefit) for deferred income taxes79 (82)14 
Depreciation and amortization120
 121
 121
Depreciation and amortization99 108 114 
Net periodic defined benefit (credit) cost(18) (18) 6
Net periodic defined benefit creditNet periodic defined benefit credit(81)(55)(35)
Share-based compensation expense48
 39
 34
Share-based compensation expense41 24 39 
Net amortization of securities3
 6
 8
Net amortization of securities36 15 
Accretion of loan purchase discount(1) (3) (4)
Net securities losses19
 
 
Net securities losses — 
Net gains on sales of foreclosed property(1) (3) (4)
Net (gains) losses on sales of foreclosed propertyNet (gains) losses on sales of foreclosed property (1)
Net change in:     Net change in:
Accrued income receivable(45) (33) (20)Accrued income receivable13 25 17 
Accrued expenses payable49
 41
 37
Accrued expenses payable132 (29)(27)
Other, net184
 39
 (366)Other, net(469)(111)(318)
Net cash provided by operating activities1,616
 1,085
 486
Net cash provided by operating activities634 928 1,090 
INVESTING ACTIVITIES     INVESTING ACTIVITIES
Investment securities available-for-sale:     Investment securities available-for-sale:
Maturities and redemptions1,781
 1,615
 1,699
Maturities and redemptions5,536 3,350 2,262 
Sales1,256
 1,259
 
Sales — 987 
Purchases(3,032) (3,112) (2,045)Purchases(7,936)(5,804)(3,346)
Investment securities held-to-maturity:     
Maturities and redemptions
 319
 402
Net change in loans(1,045) (175) (136)Net change in loans4,067 (2,136)(324)
Proceeds from sales of foreclosed property8
 22
 20
Proceeds from sales of foreclosed property8 
Net increase in premises and equipment(90) (69) (95)Net increase in premises and equipment(70)(79)(86)
Federal Home Loan Bank stock:     Federal Home Loan Bank stock:
Purchases(41) (42) (115)Purchases (51)(201)
Redemptions
 42
 
Redemptions115 92 201 
Proceeds from bank-owned life insurance settlements9
 18
 16
Proceeds from bank-owned life insurance settlements16 20 10 
Other, net(2) 3
 
Other, net(13)
Net cash used in investing activities(1,156) (120) (254)
Net cash provided by (used in) investing activitiesNet cash provided by (used in) investing activities1,723 (4,602)(494)
FINANCING ACTIVITIES     FINANCING ACTIVITIES
Net change in:     Net change in:
Deposits(2,082) (1,180) (998)Deposits8,438 15,554 1,711 
Short-term borrowings34
 (15) 2
Short-term borrowings (71)27 
Medium- and long-term debt:     Medium- and long-term debt:
Maturities and redemptions
 (500) (650)Maturities and redemptions(2,800)(1,675)(350)
Issuances and advances1,850
 
 2,800
Issuances and advances — 1,050 
Terminations
 (16) 
Preferred stock:Preferred stock:
IssuanceIssuance 394 — 
Cash dividends paidCash dividends paid(23)(8)— 
Common stock:     Common stock:
Repurchases(1,338) (560) (320)Repurchases(729)(199)(1,394)
Cash dividends paid(263) (180) (152)Cash dividends paid(369)(375)(402)
Issuances under employee stock plans52
 118
 157
Issuances under employee stock plans34 18 
Other, net3
 (5) 
Other, net4 (1)
Net cash (used in) provided by financing activities(1,744) (2,338) 839
Net (decrease) increase in cash and cash equivalents(1,284) (1,373) 1,071
Net cash provided by financing activitiesNet cash provided by financing activities4,555 13,623 661 
Net increase in cash and cash equivalentsNet increase in cash and cash equivalents6,912 9,949 1,257 
Cash and cash equivalents at beginning of period5,845
 7,218
 6,147
Cash and cash equivalents at beginning of period15,767 5,818 4,561 
Cash and cash equivalents at end of period$4,561
 $5,845
 $7,218
Cash and cash equivalents at end of period$22,679 $15,767 $5,818 
Interest paid$261
 $122
 $111
Interest paid$57 $203 $462 
Income taxes paid200
 336
 151
Income taxes paid157 141 266 
Noncash investing and financing activities:     Noncash investing and financing activities:
Loans transferred to other real estate3
 8
 21
Loans transferred to other real estate1 12 
Loans transferred from held-to-sale to portfolio
 
 17
Securities transferred from held-to-maturity to available-for-sale1,266
 
 
Securities transferred from available-for-sale to equity securities81
 
 
See notes to consolidated financial statements.

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NOTE 1 - BASIS OF PRESENTATION AND ACCOUNTING POLICIES
Organization
Comerica Incorporated (the Corporation) is a registered financial holding company headquartered in Dallas, Texas. The Corporation’s major business segments are the BusinessCommercial Bank, the Retail Bank and Wealth Management. The Corporation operates in three primary geographic markets: Michigan, California and Texas. For further discussion of each business segment, and primary geographic market, refer to Note 23.22. The Corporation and its banking subsidiaries are regulated at both the state and federal levels.
The accounting and reporting policies of the Corporation conform to United States (U.S.) generally accepted accounting principles (GAAP). The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts and disclosures. Actual results could differ from these estimates. Certain amounts in the financial statements for prior years have been reclassified to conform to the current financial statement presentation.
The following summarizes the significant accounting policies of the Corporation applied in the preparation of the accompanying consolidated financial statements.
Principles of Consolidation
The consolidated financial statements include the accounts of the Corporation and the accounts of those subsidiaries that are majority owned and in which the Corporation has a controlling financial interest. The Corporation consolidates entities not determined to be variable interest entities (VIEs) when it holds a controlling financial interest and usesapplies the cost or equity method when it holds less than a controlling financial interest. In consolidation, all significant intercompany accounts and transactions are eliminated. The results of operations of companies acquired are included from the date of acquisition.
The Corporation holds investments in certain legal entities that are considered VIEs. In general, a VIE is an entity that either (1) has an insufficient amount of equity to carry out its principal activities without additional subordinated financial support, (2) has a group of equity owners that are unable to make significant decisions about its activities, or (3) has a group of equity owners that do not have the obligation to absorb losses or the right to receive returns generated by its operations. If any of these characteristics are present, the entity is subject to a variable interests consolidation model, and consolidation is based on variable interests, not on voting interests. Variable interests are defined as contractual ownership or other money interests in an entity that change with fluctuations in the entity’s net asset value. The primary beneficiary is required to consolidate the VIE. The primary beneficiary is defined as the party that has both the power to direct the activities of the VIE that most significantly impact the entity’s economic performance and the obligation to absorb losses or the right to receive benefits that could be significant to the VIE. The maximum potential exposure to losses relative to investments in VIEs is generally limited to the sum of the outstanding book basis and unfunded commitments for future investments.
The Corporation evaluates its investments in VIEs, both at inception and when there is a change in circumstances that requires reconsideration, to determine if the Corporation is the primary beneficiary and consolidation is required. The Corporation accounts for unconsolidated VIEs using either the proportional, cost or equity method. These investments comprise investments in community development projects which generate tax credits to their investors and are included in accrued income and other assets on the Consolidated Balance Sheets.
The proportional method is used for investments in affordable housing projects that qualify for the low-income housing tax credit (LIHTC). The equity method is used for other investments where the Corporation has the ability to exercise significant influence over the entity’s operation and financial policies. Other unconsolidated equity investments that do not meet the criteria to be accounted for under the equity method are accounted for under the cost method. Amortization and other write-downs of LIHTC investments are presented on a net basis as a component of the provision for income taxes, while income, amortization and write-downs from cost and equity method investments are recorded in other noninterest income on the Consolidated Statements of Income.
Assets held in an agency or fiduciary capacity are not assets of the Corporation and are not included in the consolidated financial statements.
See Note 9 for additional information about the Corporation’s involvement with VIEs.
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Fair Value Measurements
The Corporation utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The determination of fair values of financial instruments often requires the use of estimates. In cases where quoted market values in an active market are not available, the Corporation uses present value techniques and other valuation methods to estimate the fair values of its financial instruments. These valuation methods require considerable judgment and the resulting estimates of fair value can be significantly affected by the assumptions made and methods used.

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Fair value is an estimate of the exchange price that would be received to sell an asset or paid to transfer a liability in an orderly transaction (i.e., not a forced transaction, such as a liquidation or distressed sale) between market participants at the measurement date. Fair value is based on the assumptions market participants would use when pricing an asset or liability.
Investment securities available-for-sale, derivatives, deferred compensation plans and equity securities with readily determinable fair values (primarily money market mutual funds) are recorded at fair value on a recurring basis. Additionally, from time to time, the Corporation may be required to record other assets and liabilities at fair value on a nonrecurring basis, such as impaired loans, other real estate (primarily foreclosed property), nonmarketable equity securities and certain other assets and liabilities. These nonrecurring fair value adjustments typically involve write-downs of individual assets or application of lower of cost or fair value accounting.
Fair value measurements and disclosures guidance establishes a three-level fair value hierarchy based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. The fair value hierarchy gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data. Fair value measurements are separately disclosed by level within the fair value hierarchy. For assets and liabilities recorded at fair value, it is the Corporation’s policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements.
Level 1Valuation is based upon quoted prices for identical instruments traded in active markets.
Level 2Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are less active, and model-based valuation techniques for which all significant assumptions are observable in the market.
Level 3Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.
The Corporation generally utilizes third-party pricing services to value Level 1 and Level 2 securities. Management reviews the methodologies and assumptions used by the third-party pricing services and evaluates the values provided, principally by comparison with other available market quotes for similar instruments and/or analysis based on internal models using available third-party market data. The Corporation may occasionally adjust certain values provided by the third-party pricing service when management believes, as the result of its review, that the adjusted price most appropriately reflects the fair value of the particular security.
Fair value measurements for assets and liabilities where limited or no observable market data exists are based primarily upon estimates, often calculated based on the economic and competitive environment, the characteristics of the asset or liability and other factors. Therefore, the results cannot be determined with precision and may not be realized in an actual sale or immediate settlement of the asset or liability. Additionally, there may be inherent weaknesses in any calculation technique, and changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results of current or future values.
Following are descriptions of the valuation methodologies and key inputs used to measure financial assets and liabilities recorded at fair value, as well as a description of the methods and significant assumptions used to estimate fair value disclosures for financial instruments not recorded at fair value in their entirety on a recurring basis. The descriptions include an indication of the level of the fair value hierarchy in which the assets or liabilities are classified. Transfers of assets or liabilities between levels of the fair value hierarchy are recognized at the beginning of the reporting period, when applicable.
Cash and due from banks, federal funds sold and interest-bearing deposits with banks
Due to their short-term nature, the carrying amount of these instruments approximates the estimated fair value. As such, the Corporation classifies the estimated fair value of these instruments as Level 1.
Deferred compensation plan assets and liabilities as well as equity securities with a readily determinable fair value
The Corporation holds a portfolio of securities that includes equity securities as well asand assets held related to employee deferred compensation plans. Securities and associated deferred compensation plan liabilities are recorded at fair value on a recurring
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basis and included in other short-term investments and accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheets. Level 1 securities include assets related to employee deferred compensation plans, which are invested in mutual funds, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and other securities traded on an active exchange, such as the New York Stock Exchange. Level 2 securities include municipal bonds and mortgage-backed securities issued by U.S. government-sponsored entities and corporate debt securities. Deferred compensation plan liabilities represent the fair value of the obligation to the employee,plan participant, which corresponds to the fair value of the invested assets. Level 2 securities include municipal bonds and residential

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mortgage-backed securities issued by U.S. government-sponsored entities and corporate debt securities. The methods used to value equity securities and deferred compensation plan assets are the same as the methods used to value investment securities, discussed below.
Investment securities
Investment securities available-for-sale are recorded at fair value on a recurring basis. The Corporation discloses estimated fair values of investment securities held-to-maturity, which is determined in the same manner as investment securities available-for-sale. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include residential mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored entities, andas well as corporate debt securities. The fair value of Level 2 securities is determined using quoted prices of securities with similar characteristics, or pricing models based on observable market data inputs, primarily interest rates, spreads and prepayment information.
Securities classified as Level 3 represent securities in less liquid markets requiring significant management assumptions when determining fair value. Auction-rate securities comprise Level 3 investment securities available-for-sale. The Corporate Treasury department, with appropriate oversight and approval provided by senior management, is responsible for the valuation of auction-rate securities. Valuation results, including an analysis of changes to the valuation methodology, are provided to senior management for review on a quarterly basis.
Loans held-for-sale
Loans held-for-sale, included in other short-term investments on the Consolidated Balance Sheets, are recorded at the lower of cost or fair value. Loans held-for-sale may be carried at fair value on a nonrecurring basis when fair value is less than cost. The fair value is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, the Corporation classifies both loans held-for-sale subjected to nonrecurring fair value adjustments and the estimated fair value of loans held-for sale as Level 2.
Loans
The Corporation does not record loans at fair value on a recurring basis. However, the Corporationan individual allowance may establishbe established for a specific allowanceloan that no longer shares risk characteristics with loan pools, typically collateral-dependent loans for an impaired loanwhich reserves are based on the fair value of the underlying collateral. Such loan values are reported as nonrecurring fair value measurements. Collateral values supporting individually evaluated impaired loans are evaluated quarterly. When management determines that the fair value of the collateral requires additional adjustments, either as a result of non-current appraisal value or when there is no observable market price, the Corporation classifies the impaired loan as Level 3. The Special Assets Group is responsible for performing quarterly credit quality reviews for all impaired loans as part of the quarterly allowance for loan losses process overseen by the Chief Credit Officer, during which valuation adjustments to updated collateral values are determined.
The Corporation discloses fair value estimates for loans. The estimated fair value is determined based on characteristics such as loan category, repricing features and remaining maturity, and includes prepayment and credit loss estimates. Fair values are estimated using a discounted cash flow model that employs discount rates that reflects current pricing for loans with similar maturity and risk characteristics, including credit characteristics, and the cost of equity for the portfolio at the balance sheet date. The rates take into account the expected yield curve, as well as an adjustment for prepayment risk, when applicable. The Corporation classifies the estimated fair value of loans held for investment as Level 3.
Customers’ liability on acceptances outstanding and acceptances outstanding
Customers' liability on acceptances outstanding is included in accrued income and other assets and acceptances outstanding are included in accrued expenses and other liabilities on the Consolidated Balance Sheets. Due to their short-term nature, the carrying amount of these instruments approximates the estimated fair value. As such, the Corporation classifies the estimated fair value of these instruments as Level 1.
Derivative assets and derivative liabilities
Derivative instruments held or issued for risk management or customer-initiated activities are traded in over-the-counter markets where quoted market prices are not readily available. Fair value for over-the-counter derivative instruments is measured on a recurring basis using internally developed models that use primarily market observable inputs, such as yield curves and option volatilities. The Corporation manages credit risk on its derivative positions based on whether the derivatives are being settled through a clearinghouse or bilaterally with each counterparty. For derivative positions settled on a counterparty-by-counterparty basis, the Corporation calculates credit valuation adjustments, included in the fair value of these instruments, on the basis of its relationships at the counterparty portfolio/master netting agreement level. These credit valuation adjustments are determined by applying a credit spread for the counterparty or the Corporation, as appropriate, to the total
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expected exposure of the derivative after considering collateral and other master netting arrangements. These adjustments, which are considered Level 3 inputs, are

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based on estimates of current credit spreads to evaluate the likelihood of default. When credit valuation adjustments are significant to the overall fair value of a derivative, the Corporation classifies the over-the-counter derivative valuation in Level 3 of the fair value hierarchy; otherwise, over-the-counter derivative valuations are classified in Level 2.
Nonmarketable equity securities
The Corporation has a portfolio of indirect (through funds) private equity and venture capital investments, included in accrued income and other assets on the Consolidated Balance Sheets, with a carrying value of $6$5 million and unfunded commitments of less than $1 million, at December 31, 2018.2021. The investments are accounted for either on the cost or equity method and are individually reviewed for impairment on a quarterly basis by comparing the carrying value to the estimated fair value. These investments may be carried at fair value on a nonrecurring basis when they are deemed to be impaired and written down to fair value. Where there is not a readily determinable fair value, the Corporation estimates fair value for indirect private equity and venture capital investments based on the net asset value, as reported by the fund.
The Corporation also holds restricted equity investments, primarily Federal Reserve Bank (FRB) and Federal Home Loan Bank (FHLB) and Federal Reserve Bank (FRB) stock. Restricted equity securities are not readily marketable and are recorded at cost (par value) in accrued income and other assets on the Consolidated Balance Sheets and evaluated for impairment based on the ultimate recoverability of the par value. No significant observable market data for these instruments is available. The Corporation considers the profitability and asset quality of the issuer, dividend payment history and recent redemption experience and believes its investments in FHLBFRB and FRBFHLB stock are ultimately recoverable at par. Therefore, the carrying amount for these restricted equity investments approximates fair value. The Corporation classifies the estimated fair value of such investments as Level 1. The Corporation’s investment in FHLB stock totaled $163$7 million and $122 million at December 31, 20182021 and 2017, respectively,2020, and its investment in FRB stock totaled $85 million at both December 31, 20182021 and 2017.2020.
Other real estate
Other real estate is included in accrued income and other assets on the Consolidated Balance Sheets and includes primarily foreclosed property. Foreclosed property is initially recorded at fair value, less costs to sell, at the date of legal title transfer to the Corporation, establishing a new cost basis. Subsequently, foreclosed property is carried at the lower of cost or fair value, less costs to sell. Other real estate may be carried at fair value on a nonrecurring basis when fair value is less than cost. Fair value is based upon independent market prices, appraised value or management's estimate of the value of the property. The Special Assets Group obtains updated independent market prices and appraised values, as required by state regulation or deemed necessary based on market conditions, and determines if additional write-downs are necessary. On a quarterly basis, senior management reviews all other real estate and determines whether the carrying values are reasonable, based on the length of time elapsed since receipt of independent market price or appraised value and current market conditions. When management determines that the fair value of other real estate requires additional adjustments, either as a result of a non-current appraisal or when there is no observable market price, the Corporation classifies the other real estate as Level 3.
Deposit liabilities
The estimated fair value of checking, savings and certain money market deposit accounts is represented by the amounts payable on demand. The estimated fair value of term deposits is calculated by discounting the scheduled cash flows using the period-end rates offered on these instruments. As such, the Corporation classifies the estimated fair value of deposit liabilities as Level 2.
Short-term borrowings
The carrying amount of federal funds purchased, securities sold under agreements to repurchase and other short-term borrowings approximates the estimated fair value. As such, the Corporation classifies the estimated fair value of short-term borrowings as Level 1.
Medium- and long-term debt
The estimated fair value of the Corporation's medium- and long-term debt is based on quoted market values when available. If quoted market values are not available, the estimated fair value is based on the market values of debt with similar characteristics. The Corporation classifies the estimated fair value of medium- and long-term debt as Level 2.
Credit-related financial instruments
Credit-related financial instruments include unused commitments to extend credit and letters of credit. These instruments generate ongoing fees which are recognized over the term of the commitment. In situations where credit losses are probable, the Corporation records an allowance. The carrying value of these instruments included in accrued expenses and other liabilities on the Consolidated Balance Sheets, which includes the carrying value of the deferred fees plus the related allowance, approximates the estimated fair value. The Corporation classifies the estimated fair value of credit-related financial instruments as Level 3.
For further information about fair value measurements refer to Note 2.2.

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Other Short-Term Investments
Other short-term investments include deferred compensation plan assets, certificates of deposits, equity securities with a readily determinable fair value and loans held-for-sale.    
Deferred compensation plan assets and equity securities are carried at fair value. Realized and unrealized gains or losses are included in other noninterest income on the Consolidated Statements of Income.
Loans held-for-sale, typically residential mortgages originated with the intent to sell and occasionally may includeincluding other loans transferred to held-for-sale, are carried at the lower of cost or fair value. Fair value is determined in the aggregate for each portfolio. Changes in fair value and gains or losses upon sale are included in other noninterest income on the Consolidated Statements of Income.
Investment Securities
Debt securities not held for trading purposes are classified as trading, available-for-sale (AFS) or held-to-maturity. Securities available-for-saleTrading securities are recorded at fair value, with unrealized gains and losses included in noninterest income on the Consolidated Statements of Income. AFS securities are recorded at fair value, with unrealized gains and losses, net of income taxes, reported as a separate component of other comprehensive income (OCI). Interest income is recognized using the interest method. Securities for which management has the intent and ability to hold to maturity are classified as held-to-maturity and recorded at amortized cost. Interest income is recognized using the interest method.
Securities transferred from available-for-sale to held-to-maturity are reclassified atAn AFS security is impaired if its fair value is less than amortized cost. Credit-related impairment is recognized as an allowance to investment securities available for sale on the dateConsolidated Balance Sheets with a corresponding adjustment to provision for credit losses on the Consolidated Statements of transfer. The net unrealized gain (loss) at the date of transferIncome. Non-credit-related impairment is included in historical cost and amortized over the remaining life of the related securitiesrecognized as a yield adjustment consistent with the amortizationcomponent of the net unrealized gain (loss) included in accumulated other comprehensive loss on the same securities, resulting in no impact to net income.
The Corporation adopted ASU No. 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities” (ASU 2017-12), effective January 1, 2018. As part of the adoption, the Corporation made a transition election to reclassify the portfolio of held-to-maturity securities to available-for-sale in January 2018 as the securities are eligible to be hedged. This resulted in the recognition of additional unrealized losses of $11 million at the date of transfer. For further information on ASU 2017-12, refer to the “Derivatives Instruments and Hedging Activities” policy in this Note.
Debt securities are reviewed quarterly for possible other-than-temporary impairment (OTTI). In determining whether OTTI exists for debt securities in an unrealized loss position, the Corporation assesses the likelihood of selling the security prior to the recovery of its amortized cost basis.OCI. If the Corporation intends to sell the debtan impaired AFS security or it is more likely than not that the Corporation will be required to sell the debtthat security prior to the recovery ofbefore recovering its amortized cost basis, the debt securityentire impairment amount is written downrecognized in earnings with corresponding adjustment to fair value,the security's amortized cost basis.
For certain types of AFS securities, such as U.S. Treasuries and the full amount of any impairment charge is recorded as a loss in netother securities losses in the Consolidated Statements of Income. Ifwith government guarantees, the Corporation does not intendgenerally expects zero credit losses. The zero-loss expectation applies to sellall the debt securityCorporation’s securities and it is more likely than not that the Corporation will not be required to sell the debt security prior to recovery ofno allowance for credit losses was recorded on its amortized cost basis, only the credit component of any impairment of a debt security is recognized as a loss in netAFS securities losses on the Consolidated Statements of Income, with the remaining impairment recorded in OCI.portfolio at December 31, 2021.
Gains or losses on the sale of securities are computed based on the adjusted cost of the specific security sold.
Effective January 1, 2018, the Corporation adopted the provisions of Accounting Standards Update (ASU) No. 2016-01, "Financial Instruments - Overall (Subtopic 825-10): Recognition of Financial Assets and Financial Liabilities," (ASU 2016-01). ASU 2016-01 requires equity investments, other than equity method investments, to be measured at fair value with changes in fair value recognized in net income. As a result, equity securities with readily determinable fair value were reclassified from investment securities available-for-sale to other short-term investments. At adoption, an immaterial amount of cumulative net unrealized losses on equity securities previously recognized in accumulated other comprehensive income (AOCI) was reclassified to the opening balance of retained earnings, included in cumulative effect of change in accounting principles in the accompanying Consolidated Statements of Changes in Shareholders' Equity.
For further information on investment securities, refer to Note 3.3.
Loans
Loans and leases originated and held for investment are recorded at the principal balance outstanding, net of unearned income, charge-offs and unamortized deferred fees and costs. Interest income is recognized on loans and leases using the interest method.
The Corporation assesses all loan modifications to determine whether a restructuring constitutes a troubled debt restructuring (TDR). A restructuring is considered a TDR when a borrower is experiencing financial difficulty and the Corporation grants a concession to the borrower. TDRs on accrual status at the original contractual rate of interest are considered performing.

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Nonperforming TDRs include TDRs on nonaccrual status and loans which have been renegotiated to less than the original contractual rates (reduced-rate loans). All TDRs
The CARES Act, signed in to law on March 27, 2020, included provisions that provide temporary relief from TDR accounting for certain types of modifications. Under these provisions, modifications deemed to be COVID-19-related would not be considered a TDR if the loan was not more than 30 days past due as of December 31, 2019 and the deferral was executed between March 1, 2020 and the earlier of 60 days after the date of termination of the COVID-19 national emergency or December 31, 2020. The termination of these provisions was extended, to the earlier of 60 days after the COVID-19 national emergency date or January 1, 2022, with the Consolidated Appropriations Act of 2021. The banking regulators issued similar guidance, which also clarified that a COVID-19-related modification should not be considered a TDR if the borrower was current on payments at the time the underlying loan modification program was implemented and if the modification was considered to be short-term. Modifications are considered impaired loans.first evaluated for eligibility under the CARES Act, then the interagency guidance if they do not qualify for the CARES Act relief. Modifications that are not eligible for either program continue to follow the Corporation’s established TDR policy. Additionally, loans with deferrals granted due to COVID-19 are not generally reported as past due or nonaccrual.
Effective January 1, 2020, the Corporation adopted ASU No. 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting,” (ASU 2020-04). Typically, entities must evaluate
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whether a loan contract modification results in a modified loan or a new loan for accounting purposes. Topic 848 allows entities to bypass this evaluation for qualifying modifications related to reference rate reform. The Corporation will apply the relief provided by Topic 848 to qualifying contract modifications.
Loan Origination Fees and Costs
Substantially all loan origination fees and costs are deferred and amortized to net interest income over the life of the related loan or over the commitment period as a yield adjustment. Net deferred income on originated loans, including unearned income and unamortized costs, fees, premiums and discounts, totaled $115$102 million and $113$145 million at December 31, 20182021 and 2017,2020, respectively. Net deferred income at December 31, 2021 and 2020 included $10 million and $55 million of net fees from PPP loans, respectively.
Loan fees on unused commitments and net origination fees related to loans sold are recognized in noninterest income.
Allowance for Credit Losses
The allowance for credit losses includes both the allowance for loan losses and the allowance for credit losses on lending-related commitments.
The Corporation disaggregates the loan portfolio into segments for purposes of determining the allowance for credit losses. These segments are based on the level at which the Corporation develops, documents and applies a systematic methodology to determine the allowance for credit losses. The Corporation's portfolio segments are business loans and retail loans. Business loans include the commercial, real estate construction, commercial mortgage, lease financing and international loan portfolios. Retail loans consist of traditional residential mortgage and consumer loans, including home equity and other consumer loans.
Current expected credit losses are estimated over the contractual life of the loan portfolio, considering all available relevant information, including historical and current conditions as well as reasonable and supportable forecasts of future events.
Effective January 1, 2020, the Corporation adopted the provisions of Accounting Standards Update (ASU) No. 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments," commonly referred to as the current expected credit loss (CECL) model, for all financial assets, except those accounted for at fair value through net income, using the modified retrospective approach. See Note 1 to the Corporation's 2020 Annual Report for further details. For further information on the Allowance for Credit Losses, refer to Note 4.
Allowance for Loan Losses
The allowance for loan losses is estimated on a quarterly basis and represents management’s assessmentestimates of probable, estimablecurrent expected credit losses inherent in the Corporation’s loan portfolio. The allowance for loan losses includes specific allowances, based on individual evaluations of certain loans, and allowances for homogeneous poolsPools of loans with similar risk characteristics.characteristics are collectively evaluated while loans that no longer share risk characteristics with loan pools are evaluated individually.
The Corporation individually evaluates certain impaired loans on a quarterly basis and establishes specific allowances for such loans, if required. A loan is considered impaired when it is probable that interest or principal payments will not be made in accordance withCollective loss estimates are determined by applying loss factors, designed to estimate current expected credit losses, to amortized cost balances over the remaining contractual termslife of the loan agreement. Consistent with this definition, all loans for which the accrual of interest has been discontinued (nonaccrual loans) are considered impaired. The Corporation individually evaluates nonaccrual loans with book balances of $2 million or more and loans whose terms have been modified in a TDR with book balances of $1 million or more. The threshold for individual evaluation is revised on an infrequent basis, generally when economic circumstances change significantly. Specific allowances for impaired loans are estimated using one of several methods, including the estimated fair value of underlying collateral, observable market value of similar debt or discounted expected future cash flows. Collateral values supporting individuallycollectively evaluated impaired loans are evaluated quarterly. At least annually, appraisals are obtained or appraisal assumptions are updated, unless conditions dictate increased frequency. The Corporation may reduce the collateral value based upon the age of the appraisal and adverse developments in market conditions.
portfolio. Loans which do not meet the criteria to be evaluated individually are evaluated in homogeneous pools of loans with similar risk characteristics.characteristics are aggregated into homogeneous pools. Business loans are assigned to pools based primarily on business line and the Corporation'sCorporation’s internal risk rating system. Internal risk ratingsFor retail loans, pools are assigned to each businessbased on loan at the time of approvaltype, past due status and are subjected to subsequent periodic reviews by the Corporation’s senior management, generally at least annually or more frequently upon the occurrence of a circumstance that affects the credit risk of the loan. For business loans not individually evaluated, losses inherent to the pool are estimated by applying standard reserve factors to outstanding principal balances. Standard reservescores. Loss factors are based on estimated probabilitiesprobability of default for each internal risk rating,pool, set to a default horizon based on an estimated loss emergence period,contractual life, and loss given default. TheseHistorical estimates are calibrated to economic forecasts over the reasonable and supportable forecast period based on the projected performance of specific economic variables that statistically correlate with each of the probability of default and loss given default pools. At least annually, management considers different models when estimating credit losses, selecting ones that most reasonably forecast credit losses in the relevant economic environment.
The calculation of current expected credit losses is inherently subjective, as it requires management to exercise judgment in determining appropriate factors used to determine the allowance. Some of the most significant factors in the quantitative allowance estimate are assigning internal risk ratings to loans, selecting the economic forecasts used to calibrate the reserve factors and determining the reasonable and supportable forecast period.
Internal Risk Ratings: Loss factors are evaluated quarterlydependent on loan risk ratings for business loans. Risk ratings are assigned at origination, based on inherent credit risk, and may be updated annually, unless economic conditions necessitatebased on new information that becomes available, periodic reviews of credit quality, a change giving considerationin borrower performance or modifications to count-based borrower risk rating migration experiencelending agreements.
Economic Forecasts: Management selects economic variables it believes to be most relevant based on the composition of the loan portfolio and trends, recent charge-off experience, currentcustomer base, including forecasted levels of employment, gross domestic product, corporate bond and treasury spreads, industrial production levels, consumer and commercial real estate price indices as well as housing
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statistics. Different economic conditionsforecast scenarios ranging from more benign to more severe are evaluated each reporting period to forecast losses over the contractual life of the loan portfolio.
Forecast Period: Economic forecasts are applied over the period management believes it can estimate reasonable and trends,supportable forecasts. Forecast periods may be adjusted in response to changes in collateral values of properties securing loans, and trends with respectthe economic environment. To estimate losses for contractual periods that extend beyond the forecast horizon, the Corporation reverts to past due and nonaccrual amounts.an average historical loss experience. The Corporation typically forecasts economic variables over a two-year horizon, followed by an immediate reversion to an average historical loss experience that generally incorporates a full economic cycle. Management reviews this methodology on at least an annual basis.
The allowance for business loans not individually evaluatedloan losses also includes qualitative adjustments to bring the allowance to the level management believes is appropriate based on factors that have not otherwise been fully accounted for, including adjustments for foresight risk, input imprecision and model imprecision. Foresight risk reflects the inherent imprecision in forecasting economic variables, including determining the depth and duration of economic cycles and their impact to relevant economic variables. The Corporation may make qualitative adjustments based on its evaluation of different forecast scenarios and known recent events impacting relevant economic variables. Input imprecision factors address the risk that certain model inputs may not reflect all available information including (i) risk factors that have not been fully addressed in internal risk ratings, (ii) imprecisionchanges in the risk rating system resulting from inaccuracy in assigning and/or entering risk ratings in the loan accounting system,lending policies and procedures, (iii) market conditions and (iv) model imprecision. Risk factors that have not been fully addressed in internal risk ratings may include portfolios where recent historical losses exceed expected losses or known recent events are expected to alter risk ratings once evidence is acquired, portfolios where a certain level of concentration introduces added risk, or changes in the level and quality of experience held by lending management. An additional allowance formanagement, (iv) imprecision in the risk rating errors is calculated based onsystem and (v) limitations in data available for certain loan portfolios. Model imprecision considers known model limitations and model updates not yet fully reflected in the results of risk rating accuracy assessments performed on samples of business loans conducted by the Corporation's asset quality review function, a function independent ofquantitative estimate.

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the lending and credit groups responsible for assigning the initial internal risk rating at the time of approval. Qualitative adjustments for market conditions are determined based on an established framework. The determination of the appropriate qualitative adjustment is based on management's analysis of observable macroeconomic metrics, including consideration of regional metrics withincurrent and expected economic conditions and their impact to the Corporation's footprint,portfolio, as well as internal credit risk movementmovements and a qualitative assessment of the lending environment, including underwriting standards, current economic and political conditions, and other factors affecting credit quality.standards. Management recognizes the sensitivity of various assumptions made in the quantitative modeling of expected losses and may adjust reserves depending upon the level of uncertainty that currently exists in one or more assumption.assumptions.
Credit losses for loans that no longer share risk characteristics with the loan pools are estimated on an individual basis. Individual credit loss estimates are typically performed for nonaccrual loans and modified loans classified as TDRs and are based on one of several methods, including the estimated fair value of the underlying collateral, observable market value of similar debt or the present value of expected cash flows. The allowanceCorporation considers certain loans to be collateral-dependent if the borrower is experiencing financial difficulty and management expects repayment for retailthe loan to be substantially through the operation or sale of the collateral. For collateral-dependent loans, notloss estimates are based on the fair value of collateral, less estimated cost to sell (if applicable). Collateral values supporting individually evaluated is determined by applying estimated loss rates to various pools of loans within the portfolios with similar risk characteristics. Estimated loss rates for all pools are updatedassessed quarterly incorporating quantitative and qualitative factors such as recent charge-off experience, current economic conditions and trends, changes in collateral values of properties securing loans (using index-based estimates), and trends with respect to past due and nonaccrual amounts.appraisals are typically obtained at least annually.
The total allowance for loan losses is sufficient to absorb incurredexpected credit losses inherent inover the totalcontractual life of the portfolio. Unanticipated economic events impacting the economy, including political economic and regulatory instability in countries whereor global events affecting the Corporation has loans,U.S. economy, could cause changes in the credit characteristics of the portfolioto expectations for current conditions and economic forecasts that result in an unanticipated increase in the allowance. Significant increases in current portfolio exposures as well as the inclusion of additional industry-specific portfolio exposuresor changes in the allowance,credit characteristics could also increase the amount of the allowance. Any of theseSuch events, or some combination thereof,others of similar nature, may result in the need for additional provision for credit losses in order to maintain an allowance that complies with credit risk and accounting policies.
Loans deemed uncollectible are charged off and deducted from the allowance. Recoveries on loans previously charged off are added to the allowance.
Credit losses are not estimated for accrued interest receivable as interest that is deemed uncollectible is written off through interest income.
Allowance for Credit Losses on Lending-Related Commitments
The allowance for credit losses on lending-related commitments provides for probable losses inherent in lending-related commitments, including unused commitments to extend credit and letters of credit. The allowance forestimates current expected credit losses on lending-related commitments includes allowances based on homogeneouscollective pools of letters of credit and unused commitments to extend credit within each internal risk rating. Abased on reserve factors, determined in a manner similar to business loans, multiplied by a probability of draw estimate, isbased on historical experience and credit risk, applied to the commitment amount, and the result is multiplied by standard reserve factors consistent with business loans. In general, the probability of draw for letters of credit is considered certain for all letters of credit supporting loans and for letters of credit assigned an internal risk rating generally consistent with regulatory defined substandard or doubtful. Other letters of credit and all unfunded commitments have a lower probability of draw.amounts. The allowance for credit losses on lending-related commitments is included in accrued expenses and other liabilities on the Consolidated Balance Sheets, with the corresponding charge reflectedincluded in the provision for credit losses on the Consolidated Statements of Comprehensive Income.
Nonperforming Assets
Nonperforming assets consist of nonaccrual loans, reduced-rate loans and foreclosed property.
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A loan is considered past due when the contractually required principal or interest payment is not received by the specified due date or, for certain loans, when a scheduled monthly payment is past due and unpaid for 30 days or more. Business loans are generally placed on nonaccrual status when management determines full collection of principal or interest is unlikely or when principal or interest payments are 90 days past due, unless the loan is fully collateralized and in the process of collection. The past-due status of a business loan is one of many indicative factors considered in determining the collectabilitycollectibility of the credit. The primary driver of when the principal amount of a business loan should be fully or partially charged-off is based on a qualitative assessment of the recoverability of the principal amount from collateral and other cash flow sources. Residential mortgage and home equity loans are generally placed on nonaccrual status once they become 90 days past due and are charged off to current appraised values less costs to sell no later than 180 days past due. In addition, junior lien home equity loans less than 90 days past due are placed on nonaccrual status if they have underlying risk characteristics that place full collection of the loan in doubt, such as when the related senior lien position is identified as seriously delinquent. Residential mortgage and consumer loans in bankruptcy for which the court has discharged the borrower's obligation and the borrower has not reaffirmed the debt are placed on nonaccrual status and written down to estimated collateral value, without regard to the actual payment status of the loan, and are classified as TDRs. All other consumer loans are generally placed on nonaccrual status at 90 days past due and are charged off at no later than 120 days past due, or earlier if deemed uncollectible. Loans with payment deferrals granted due to COVID-19 were not considered past due or nonaccrual at December 31, 2021.
At the time a loan is placed on nonaccrual status, interest previously accrued but not collected is charged against current income. Principal and interest payments received on such loans are generally first applied as a reduction of principal. Income on nonaccrual loans is then recognized only to the extent that cash is received after principal has been fully repaid or future collection of principal is probable. Generally, a loan may be returned to accrual status when all delinquent principal and interest have been

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received and the Corporation expects repayment of the remaining contractual principal and interest, or when the loan or debt security is both well secured and in the process of collection.
Foreclosed property (primarily real estate) is initially recorded at fair value, less costs to sell, at the date of legal title transfer to the Corporation and subsequently carried at the lower of cost or fair value, less estimated costs to sell. Loans are reclassified to foreclosed property upon obtaining legal title to the collateral. Independent appraisals are obtained to substantiate the fair value of foreclosed property at the time of foreclosure and updated at least annually or upon evidence of deterioration in the property’s value. At the time of foreclosure, the adjustment for the difference between the related loan balance and fair value (less estimated costs to sell) of the property acquired is charged or credited to the allowance for loan losses. Subsequent write-downs, operating expenses and losses upon sale, if any, are charged to noninterest expenses. Foreclosed property is included in accrued income and other assets on the Consolidated Balance Sheets.
Premises and Equipment
Premises and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation, computed using the straight-line method, is charged to operationsoccupancy expenses in the Consolidated Statements of Income over the estimated useful lives of the assets. Estimated useful lives are generally 3 years to 33 years for premises that the Corporation owns and 3 years to 8 years for furniture and equipment. Leasehold improvements are generally amortized over the terms of their respective leases or 10 years, whichever is shorter.
Operating Leases
Operating leases with a term greater than one year are recognized as lease liabilities, measured as the present value of unpaid lease payments for operating leases where the Corporation is the lessee, and corresponding right-of-use (ROU) assets for the right to use the leased properties. Operating lease liabilities, recorded in accrued expenses and other liabilities, reflect the Corporation’s obligation to make future lease payments, primarily for real estate locations. Lease terms typically comprise contractual terms but may include extension options reasonably certain of being exercised at lease inception for certain strategic locations such as regional headquarters. Payments are discounted using the Corporation's incremental borrowing rate, or the rate it would pay to borrow amounts equal to the lease payments over the lease term. The Corporation does not separate lease and non-lease components for contracts in which it is the lessee. ROU assets, recorded in accrued income and other assets, are measured based on lease liabilities adjusted for incentives as well as accrued and prepaid rent. Operating lease expense is recognized on a straight-line basis over the lease term, while variable lease payments are recognized as incurred. Common area maintenance and other executory costs are the main components of variable lease payments. Operating and variable lease expenses are recorded in net occupancy expense on the Consolidated Statements of Income.
Software
Capitalized software, is stated at cost less accumulated amortization. Capitalized softwareamortization, includes purchased software, capitalizable application development costs associated with internally-developedinternally developed software and cloud computing arrangements, including an in-substance
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capitalizable implementation costs associated with hosting arrangements that are service contracts. Cloud computing arrangements include software license. Amortization, computed on the straight-line method, is chargedas a service (SaaS), platform as a service (PaaS), infrastructure as a service (IaaS) and other similar hosting arrangements. The Corporation primarily utilizes SaaS and IaaS arrangements. Capitalized implementation costs of hosting arrangements that are service contracts were $21 million at December 31, 2021, which included accumulated depreciation related to operations over the estimated useful lifethese costs of the software, generally 5 years. $3 million. Capitalized implementation costs of hosting arrangements that are service contracts were $7 million at December 31, 2020. There was no accumulated depreciation for capitalized implementation costs at December 31, 2020.
Capitalized software is included in accrued income and other assets on the Consolidated Balance Sheets. Amortization expense, generally computed on the straight-line method, is charged to software expense in the Consolidated Statements of Income over the estimated useful life of the software, generally five years, or the term of the hosting arrangement for implementation costs related to service contracts.
Goodwill and Core Deposit Intangibles
Goodwill, included in accrued income and other assets on the Consolidated Balance Sheets, is initially recorded as the excess of the purchase price over the fair value of net assets acquired in a business combination and is subsequently evaluated at least annually for impairment. Goodwill impairment testing is performed at the reporting unit level, equivalent to a business segment or one level below. The Corporation has three3 reporting units: the BusinessCommercial Bank, the Retail Bank and Wealth Management.
The Corporation performs its annual evaluation of goodwill impairment in the third quarter of each year and may elect to perform a quantitative impairment analysis or first conduct a qualitative analysis to determine if a quantitative analysis is necessary. Additionally, the Corporation evaluates goodwill impairment on an interim basis if events or changes in circumstances between annual tests suggestindicate additional testing may be warranted to determine if goodwill might be impaired. TheFactors considered in the assessment of the likelihood of impairment include macroeconomic conditions, industry and market considerations, stock performance of the Corporation and its peers, financial performance of the reporting units, and previous results of goodwill impairment tests, amongst other factors. Based on the results of the qualitative analysis, the Corporation determines whether a quantitative test is a two-step test.necessary. The first step of the goodwill impairmentquantitative test compares the estimated fair value of identified reporting units with their carrying amount, including goodwill. If the estimated fair value of the reporting unit is less than the carrying value, the second step must be performed to determine the implied fair value of the reporting unit's goodwill and the amount of goodwill impairment, if any. The implied fair value of goodwill is determined as if the reporting unit were being acquired in a business combination. If the implied fair value of goodwill exceeds the goodwill assigned to the reporting unit, there is no impairment. If the goodwill assigned to a reporting unit exceeds the implied fair value of goodwill, an impairment charge would be recorded for the excess.
The Corporation may chooseexcess, not to perform a qualitative assessment to determine whetherexceed the first step of the impairment test should be performed in future periods if certain factors indicate that impairment is unlikely. Factors which could be considered in the assessment of the likelihood of impairment include macroeconomic conditions, industry and market considerations, stock performance of the Corporation and its peers, financial performance, events affecting the Corporation as a whole or its reporting units individually and previous resultsamount of goodwill impairment tests.allocated to the reporting unit.
Core deposit intangibles are amortized on an accelerated basis, based on the estimated period the economic benefits are expected to be received. Core deposit intangibles are reviewed for impairment when events or changes in circumstances indicate that their carrying amounts may not be recoverable. Impairment for a finite-lived intangible asset exists if the sum of the undiscounted cash flows expected to result from the use of the asset exceeds its carrying value.
Additional information regarding goodwill and core deposit intangibles can be found in Note 7.7.
Nonmarketable Equity Securities
The Corporation has certain investments that are not readily marketable. These investments include a portfolio of investments in indirect private equity and venture capital funds and restricted equity investments, which are securities the Corporation is required to hold for various reasons, primarily Federal Home Loan Bank of Dallas (FHLB) and Federal Reserve Bank (FRB) stock. These investments are accounted for on the cost or equity method and are included in accrued income and other

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assets on the Consolidated Balance Sheets. The investments are individually reviewed for impairment on a quarterly basis. Indirect private equity and venture capital funds are evaluated for impairment by comparing the carrying value to the estimated fair value. The amount by which the carrying value exceeds the fair value that is determined to be other-than-temporary impairmentImpairment is charged to current earnings and the carrying value of the investment is written down accordingly. FHLB and FRB stock are recorded at cost (par value) and evaluated for impairment based on the ultimate recoverability of the par value. If the Corporation does not expect to recover the full par value, the amount by which the par value exceeds the ultimately recoverable value would be charged to current earnings and the carrying value of the investment would be written down accordingly.
Derivative Instruments and Hedging Activities
Derivative instruments are carried at fair value in either accrued income and other assets or accrued expenses and other liabilities on the Consolidated Balance Sheets. The accounting for changes in the fair value (i.e., gains or losses) of a derivative instrument is determined by whether it has been designated and qualifies as part of a hedging relationship and, further, by the type of hedging relationship. The Corporation presents derivative instruments at fair value inon the Consolidated Balance Sheets on a net basis when a right of offset exists, based on transactions with a single counterparty and any cash collateral paid to and/or received from that counterparty for derivative contracts that are subject to legally enforceable master netting arrangements.
The Corporation adopted ASU No. 2017-12 effective January 1, 2018. ASU 2017-12 better aligns the accounting
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Comerica Incorporated and reporting of hedging relationships with the economics of risk management activities and provides administrative reliefs to simplify the application of hedge accounting, including expanding the application of the shortcut method, eliminating the separate measurement and reporting of hedge ineffectiveness and generally requiring the entire effect of the hedging instrument and the hedged item to be presented in the same income statement line item.Subsidiaries

For derivative instruments designated and qualifying as fair value hedges (i.e., hedging the exposure to changes in the fair value of an asset or a liability or an identified portion thereof that is attributable to a particular risk), the gain or loss on the derivative instrument, as well as the offsetting loss or gain on the hedged item attributable to the hedged risk, are recognized in the same consolidated statement of income line that is used to present the earnings effect of the hedged item during the period of the change in fair values. For derivative instruments that are designated and qualify as cash flow hedges (i.e., hedging the exposure to variability in expected future cash flows that is attributable to a particular risk), the gain or loss on the derivative instrument is reported as a component of other comprehensive income and reclassified into earnings in the same consolidated statement of income line item as the earnings effect of the hedged item in the same period or periods during which the hedged transaction affects earnings. For derivative instruments not designated as hedging instruments, the gain or loss is recognized in current earnings during the period of change.
The Corporation’s derivative instruments used for risk management predominately comprise swaps converting fixed-rate long-term debt to variable rates. An ineffectiveness net gain of $1 million and net loss of $2 million were included in other noninterest income in the consolidated statements of income for the years ended December 31, 2017 and 2016, respectively. Under ASU 2017-12, beginning January 1, 2018, gains or losses relating to hedge ineffectiveness are no longer separately measured or reported.
To qualify for the use of hedge accounting, a derivative must be effective at inception and expected to be continuously effective in offsetting the risk being hedged. For derivatives designated as hedging instruments at inception, the Corporation uses either the short-cut method or applies statistical regression analysis to assess effectiveness. The short-cut method is used for $1$2.1 billion of notional of fair value hedges of medium- and long-term debt. This method allows for the assumption of perfect effectiveness and eliminates the requirement to further assess hedge effectiveness on these transactions. For hedge relationships to which the Corporation does not apply the short-cut method, statistical regression analysis is used at inception to assess whether the derivative used is expected to be highly effective in offsetting changes in the fair value or cash flows of the hedged item. A statistical regression or qualitative analysis is performed at each reporting period thereafter to evaluate hedge effectiveness. As part of the adoption of Topic 848, certain hedge accounting requirements for qualifying modifications to derivative instruments due to reference rate reform are temporarily suspended. For further information on Topic 848, refer to the "Loans" policy in this Note.
Upon adopting ASU 2017-12, the Corporation elected to change the measurement methodology of all long-haul fair value hedges existing at December 31, 2017. The prior period effect of this election was a $1 million reduction to opening retained earnings, included in cumulative effect of change in accounting principles in the Consolidated Statements of Shareholders' Equity.
Further information on the Corporation’s derivative instruments and hedging activities is included in Note 8.8.
Short-Term Borrowings
Securities sold under agreements to repurchase are treated as collateralized borrowings and are recorded at amounts equal to the cash received. The contractual terms of the agreements to repurchase may require the Corporation to provide additional collateral if the fair value of the securities underlying the borrowings declines during the term of the agreement.

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Financial Guarantees
Certain guarantee contracts or indemnification agreements that contingently require the Corporation, as guarantor, to make payments to the guaranteed party are initially measured at fair value and included in accrued expenses and other liabilities on the Consolidated Balance Sheets. The subsequent accounting for the liability depends on the nature of the underlying guarantee. The release from risk is accounted for under a particular guarantee when the guarantee expires or is settled, or by a systematic and rational amortization method.
Further information on the Corporation’s obligations under guarantees is included in Note 8.8.
Share-Based Compensation
The Corporation recognizes share-based compensation expense using the straight-line method over the requisite service period for all stock awards, including those with graded vesting. The requisite service period is the period an employee is required to provide service in order to vest in the award, which cannot extend beyond the date at which the employee is no longer required to perform any service to receive the share-based compensation (i.e., the retirement-eligible date). Forfeiture of stock awards and dividend equivalents are accounted for as they occur.
Certain awards are contingent upon performance and/or market conditions, which affect the number of shares ultimately issued. The Corporation periodically evaluates the probable outcome of the performance conditions and makes cumulative adjustments to compensation expense as appropriate. Market conditions are included in the determination of the fair value of the award on the date of grant. Subsequent to the grant date, market conditions have no impact on the amount of compensation expense the Corporation will recognize over the life of the award.
Further information on the Corporation’s share-based compensation plans is included in Note 16.16.
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Revenue Recognition
Effective January 1, 2018, the Corporation adopted the provision of Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 606, "Revenue from Contracts with Customers" (Topic 606), using the modified retrospective method applied to all open contracts as of January 1, 2018.
Under Topic 606, card fee revenue from certain products is generally presented net of network costs, including interchange costs, surcharge fees and assessment fees, as opposed to the previous presentation of associated network costs in outside processing fee expense in the Consolidated Statements of Income. Similar adjustments were made for other revenue streams that resulted in certain costs being recognized in the same category as the associated revenues in noninterest income.
The adoption of Topic 606 resulted in decreases of $140 million in card fees and $5 million in service charges on deposits accounts, included in noninterest income, and a corresponding $145 million decrease in outside processing fee expense included in noninterest expenses, in the Consolidated Statements of Income for 2018.
The Corporation previously deferred recognition of certain treasury management fees included in service charges on deposit accounts in the Consolidated Statements of Income until the amount of compensation was considered fixed and determinable. Under the new guidance, the portion of these fees that are based on agreed-upon rates less estimated credits expected to be earned by the customer is recognized as services are rendered. As a result, the Corporation recorded a transition adjustment of $14 million, after tax, to retained earnings, included in cumulative effect of change in accounting principles in the accompanying Consolidated Statements of Changes in Shareholders' Equity. Similar adjustments were made for other revenue streams that resulted in an additional cumulative transition after-tax adjustment to retained earnings of $2 million.
Revenue from contracts with customers comprises the noninterest income earned by the Corporation in exchange for services provided to customers and areis recognized when services are completecompleted or as they are rendered, although contracts are generally short-term by nature. Services provided over a period of time are typically transferred to customers evenly over the term of the contracts and revenue is recognized evenlyaccordingly over the period services are provided. Contract receivables are included in accrued income and other assets on the Consolidated Balance Sheets. Payment terms vary by services offered, and the time between completion of performance obligations and payment is typically not significant.
Card Fees
Card fees comprise interchange and other fee income earned on government card, commercial card, debit/automated teller machine card and merchant payment processing programs. Card fees are presented net of network costs, as performance obligations for card services are limited to transaction processing and settlement with the card network on behalf of the customers. Fees for these services are primarily based on interchange rates set by the network and transaction volume. The Corporation also provides ongoing card program support services, for which fees are based on contractually agreedagreed-upon prices and customer demand for services.

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Service Charges on Deposit Accounts
Service charges on deposit accounts comprise charges on retail and business accounts, including fees for treasury management services. Treasury management services include transaction-based services related to payment processing, overdrafts, non-sufficient funds and other deposit account activity, as well as account management services that are provided over time. Business customers can earn credits depending on deposit balances maintained with the Corporation, which may be used to offset fees. Fees and credits are based on predetermined, agreed-upon rates.
Fiduciary Income
Fiduciary income includes fees and commissions from asset management, custody, recordkeeping, investment advisory and other services provided primarily to personal and institutional trust customers. Revenue is recognized as the services are performed and is based either on the market value of the assets managed or the services provided, as well as agreed-upon rates.
Commercial Lending Fees
Commercial lending fees include both revenue from contracts with customers (primarily loan servicing fees) and other sources of revenue. Commercial loan servicing fees are based on contractually agreed-upon prices and when the services are provided. Other sources of revenue in commercial lending fees primarily include fees assessed on the unused portion of commercial lines of credit (unused commitment fees) and syndication arrangements.
Brokerage Fees    
Brokerage fees are commissions earned for facilitating securities transactions for customers, as well as other brokerage services provided. Revenue is recognized when services are completecompleted and is based on the type of services provided and agreed-upon rates. The Corporation pays commissions based on brokerage fee revenue. These are typically recognized when incurred because the amortization period is one year or less and are included in salaries and benefits expense inon the Consolidated Statements of Income.
Other Revenues    
Other revenues, consisting primarily of other retail fees, investment banking fees and insurance commissions, are typically recognized when services or transactions are completed and are based on the type of services provided and agreed-upon rates.
Except as discussed above, commissions and other incentives paid to employees are generally based on several internal and external metrics and, as a result, are not solely dependent on revenue generating activities.
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Defined Benefit Pension and Other Postretirement Costs
Defined benefit pension costs are funded consistent with the requirements of federal laws and regulations. Inherent in the determination of defined benefit pension costs are assumptions concerning future events that will affect the amount and timing of required benefit payments under the plans. These assumptions include demographic assumptions such as retirement age and mortality, a compensation rate increase, a discount rate used to determine the current benefit obligation, form of payment election and a long-term expected rate of return on plan assets. Net periodic defined benefit pension expense includes service cost, interest cost based on the assumed discount rate, an expected return on plan assets based on an actuarially derived market-related value of assets (MRVA), amortization of prior service cost or credit and amortization of net actuarial gains or losses. The market-relatedMRVA for fixed income securities and private placement assets is based on the fair value of plan assets, whereas the MRVA for other plan assets is determined by amortizing the current year’s investment gains and losses (the actual investment return net of the expected investment return) over 5 years. The amortization adjustment cannot exceed 10 percent of the fair value of assets. Prior service costs or credits include the impact of plan amendments on the liabilities and are amortized over the future service periods of active employees expected to receive benefits under the plan. Actuarial gains and losses result from experience different from that assumed and from changes in assumptions (excluding asset gains and losses not yet reflected in market-related value). Amortization of actuarial gains and losses is included as a component of net periodic defined benefit pension cost for a year if the actuarial net gain or loss exceeds 10 percent of the greater of the projected benefit obligation or the market-related value of plan assets. If amortization is required, the excess is amortized over the average remaining service period of participating employees expected to receive benefits under the plan. Service costs are included in salaries and benefits expense, while the other components of net periodic defined benefit pension expense are included in other noninterest expenses on the Consolidated Statements of Income.
Postretirement benefit costs includes service cost, interest cost based on the assumed discount rate, an expected return on plan assets based on an actuarially derived MRVA, amortization of prior service cost or credit and amortization of net actuarial gains or losses. The components of postretirement benefit costs follow similar policies and methodologies as defined benefit pensions costs. Postretirement benefits are recognized in other noninterest expenses on the Consolidated Statements of Income duringIncome.
Effective January 1, 2021, the Corporation elected to change the accounting methodology for determining the MRVA for certain asset classes in the qualified defined benefit pension plan. The MRVA is used to calculate the Corporation's expected return on plan assets, a component of defined pension benefit cost (credit). These classes are currently comprised of the fixed income securities and private placement assets held in the portfolio, utilized by the Corporation to mitigate the impacts to financial results from changes in fair value of the pension liability. Previously, MRVA was measured using a historical five-year average remaining service periodfair value. Under the new methodology, the Corporation calculates MRVA using fair value of participating employees expected to receive benefitsplan assets. Although both methods are permitted under U.S. GAAP, the plan orCorporation believes the average remaining future lifetimenew policy is preferable for these classes of retired participants currently receiving benefits underassets as it results in more timely recognition of the plan.performance of pension assets in the results from operations.
The Corporationchange in accounting methodology is applied retrospectively adoptedto all prior periods presented in the provisionsconsolidated financial statements. The impact of ASU No. 2017-07, “Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost” (ASU 2017-07)change to the qualified defined benefit plan on January 1, 2018, which requires employers to report service costthe Corporation's consolidated financial statements is as part of compensation expense and the other components of net benefit cost separately from service cost. As a result, $49 million and $28 million of benefit from the other components offollows:

Consolidated Balance Sheets
 December 31, 2021December 31, 2020
(in millions)Change ImpactPreviously ReportedChange ImpactRecast
Amounts
Accumulated other comprehensive (loss) income$(14)$168 $(104)$64 
Retained earnings14 9,623 104 9,727 





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net benefit cost was reclassified from salaries and benefits expense to other noninterest expenses in the Consolidated Statements of Income for 2017 and 2016, respectively. The Corporation based the adjustment to the prior periods on amounts disclosed in Note 17.
Years Ended December 31,
 202120202019
(in millions)Change ImpactPreviously ReportedChange ImpactRecast AmountsPreviously ReportedChange ImpactRecast Amounts
Other noninterest expenses$(18)$96 $(30)$66 $81 $(6)$75 
Provision for income taxes$$117 $$124 $334 $$336 
Net income$14 $474 $23 $497 $1,198 $$1,202 
Earnings per common share:
Basic$0.10 $3.29 $0.16 $3.45 $7.95 $0.03 $7.98 
Diluted0.11 3.27 0.16 3.43 7.87 0.03 7.90 
Consolidated Statements of Cash Flows
Years Ended December 31,
 202120202019
(in millions)Change ImpactPreviously ReportedChange ImpactRecast AmountsPreviously ReportedChange ImpactRecast Amounts
Net income$14 $474 $23 $497 $1,198 $$1,202 
Provision (benefit) for deferred income taxes4(89)(82)12 14 
Net periodic defined benefit credit(18)(25)(30)(55)(29)(6)(35)
See Note 17 for further information regarding the Corporation’s defined benefit pension and other postretirement plans.
Income Taxes
The provision for income taxes is the sum of income taxes due for the current year and deferred taxes. The Corporation classifies interest and penalties on income tax liabilities and beginning January 1, 2017, excess tax benefits and deficiencies resulting from employee stock awards in the provision for income taxes on the Consolidated Statements of Income.
Deferred taxes arise from temporary differences between the income tax basis and financial accounting basis of assets and liabilities. Deferred tax assets are evaluated for realization based on available evidence of projected future reversals of existing taxable temporary differences, foreign tax credit limitations, assumptions made regarding future events and, when applicable, state loss carryback capacity. A valuation allowance is provided when it is more likely than not that some portion of the deferred tax asset will not be realized.
The Tax Cuts and Jobs Act (the "Act"), enacted on December 22, 2017, reduced the U.S. federal corporate tax rate from 35 percent to 21 percent. Also, on December 22, 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 118 (SAB 118), which provides guidance on accounting for tax effects of the Act. SAB 118 provided a measurement period of up to one year from the enactment date to complete the accounting. The amount recorded related to the remeasurement of the Corporation's deferred tax balance was a reduction of $99 million, including a provisional adjustment of $107 million recognized in 2017 and an $8 million revision to the impact recorded in 2018.
Earnings Per Share
Basic net income per common share is calculated using the two-class method. The two-class method is an earnings allocation formula that determines earnings per share for each share of common stock and participating securities according to dividends declared (distributed earnings) and participation rights in undistributed earnings. Distributed and undistributed earnings are allocated between common and participating security shareholders based on their respective rights to receive dividends. Nonvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents are considered participating securities (e.g., nonvested restricted stock and certain service-based restricted stock units). Undistributed net losses are not allocated to nonvested restricted shareholders, as these shareholders do not have a contractual obligation to fund the losses incurred by the Corporation. Net income attributable to common shares is then divided by the weighted-average number of common shares outstanding during the period.
Diluted net income per common share is calculated using the more dilutive of either the treasury method or the two-class method. The dilutive calculation considers common stock issuable under the assumed exercise of stock options and warrants, as well as service- and performance-based restricted stock units granted under the Corporation’s stock plans using the
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treasury stock method, if dilutive. Net income attributable to common shares is then divided by the total of weighted-average number of common shares and common stock equivalents outstanding during the period.
Statements of Cash Flows
Cash and cash equivalents are defined as those amounts included in cash and due from banks and interest-bearing deposits with banks on the Consolidated Balance Sheets.
The Corporation adopted ASU No. 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” (ASU 2016-15) on January 1, 2018 and, as a result, reclassified $18 million and $16 million of proceeds from settlement of bank-owned life insurance policies from operating activities to investing activities for 2017 and 2016, respectively.
Comprehensive Income (Loss)
The Corporation presents on an annual basis the components of net income and other comprehensive income in two separate, but consecutive statements and presents on an interim basis the components of net income and a total for comprehensive income in one continuous consolidated statement of comprehensive income.
Pending Accounting Pronouncements
In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842),” (ASU 2016-02), to increase the transparency and comparability of lease recognition and disclosure. ASU 2016-02 requires lessees to recognize lease contracts on the balance sheet, while recognizing expenses on the income statement in a manner similar to current guidance. The Corporation will adopt Topic 842 in the first quarter 2019 for all open leases with a term greater than one year as of the adoption date using the modified


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retrospective approach and will elect the hindsight practical expedient in determining its lease terms. This is expected to result in increases of $330 million and $345 million to total assets and total liabilities, respectively, and a reduction to retained earnings of approximately $15 million. The increase to total assets was primarily due to the recognition of a right-of-use asset recorded in accrued income and other assets, while the increase in total liabilities was primarily due to recognition of the lease payment liability recorded in accrued expenses and other liabilities. A similar increase in assets at December 31, 2018 would have caused a 5-basis-point decrease in the common equity tier 1 capital (CET1) ratio.
In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments," (ASU 2016-13), which addresses concerns regarding the perceived delay in recognition of credit losses under the existing incurred loss model. The amendment introduces a new, single model for recognizing credit losses on all financial instruments presented on a cost basis. Under the new model, entities must estimate current expected credit losses by considering all available relevant information, including historical and current conditions, as well as reasonable and supportable forecasts of future events. The update also requires additional qualitative and quantitative disclosure to allow users to better understand the credit risk within the portfolio and the methodologies for determining the allowance for credit losses.
ASU 2016-13 is effective for the Corporation on January 1, 2020 and must be applied using the modified retrospective approach with limited exceptions. In preparation, the Corporation has developed new credit estimation models, processes and controls. Internal validation of the models is underway and expected to be completed early in 2019. The Corporation has performed test runs of the new processes and controls and expects to begin full parallel runs by mid-2019. The impact of the standard will depend on the composition of the Corporation’s portfolio as well as economic conditions and forecasts at the time of adoption. The Corporation expects to adopt the standard in the first quarter of 2020.
In August 2018, the FASB issued ASU No. 2018-15, "Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract," (ASU 2018-15), to align the requirements for capitalizing implementation costs in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs relating to internal-use software. The update requires entities in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation costs to capitalize as an asset and which costs to expense. ASU 2018-15 is effective for the Corporation on January 1, 2020 and may be applied using either the retrospective or prospective approach. Early adoption is permitted. The Corporation is currently evaluating the impact of adoption.
In October 2018, the FASB issued ASU No. 2018-16, “Derivatives and Hedging (Topic 815):  Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes,” (ASU 2018-16), to permit the use of SOFR as an eligible benchmark interest rate for hedge accounting. SOFR has been identified by the Federal Reserve Board and the Alternative Reference Rates Committee as the preferred alternative reference rate to the London Interbank Offered Rate (LIBOR).  The Corporation will adopt ASU 2018-16 prospectively in the first quarter of 2019. As of December 31, 2018, there were no active SOFR-based contracts.

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NOTE 2 – FAIR VALUE MEASUREMENTS
Note 1 contains information about the fair value hierarchy, descriptions of the valuation methodologies and key inputs used to measure financial assets and liabilities recorded at fair value, as well as a description of the methods and significant assumptions used to estimate fair value disclosures for financial instruments not recorded at fair value in their entirety on a recurring basis.
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Assets and Liabilities Recorded at Fair Value on a Recurring Basis
The following tables present the recorded amount of assets and liabilities measured at fair value on a recurring basis as of December 31, 20182021 and 2017.2020.
(in millions)TotalLevel 1Level 2Level 3
December 31, 2021
Deferred compensation plan assets$113 $113 $ $ 
Equity securities62 62   
Investment securities available-for-sale:
U.S. Treasury securities2,993 2,993   
Residential mortgage-backed securities (a)13,288  13,288  
Commercial mortgage-backed securities (a)705  705  
Total investment securities available-for-sale16,986 2,993 13,993  
Derivative assets:
Interest rate contracts239  213 26 
Energy contracts670  670  
Foreign exchange contracts19  19  
Total derivative assets928  902 26 
Total assets at fair value$18,089 $3,168 $14,895 $26 
Derivative liabilities:
Interest rate contracts$69 $ $69 $ 
Energy contracts662  662  
Foreign exchange contracts16  16  
Other financial derivative13   13 
Total derivative liabilities760  747 13 
Deferred compensation plan liabilities113 113   
Total liabilities at fair value$873 $113 $747 $13 
December 31, 2020
Deferred compensation plan assets$107 $107 $— $— 
Equity securities50 50 — — 
Investment securities available-for-sale:
U.S. Treasury securities4,658 4,658 — — 
Residential mortgage-backed securities (a)10,370 — 10,370 — 
Total investment securities available-for-sale15,028 4,658 10,370 — 
Derivative assets:
Interest rate contracts531 — 492 39 
Energy contracts151 — 151 — 
Foreign exchange contracts18 — 18 — 
Total derivative assets700 — 661 39 
Total assets at fair value$15,885 $4,815 $11,031 $39 
Derivative liabilities:
Interest rate contracts$61 $— $61 $— 
Energy contracts149 — 149 — 
Foreign exchange contracts19 — 19 — 
Other financial derivative11 — — 11 
Total derivative liabilities240 — 229 11 
Deferred compensation plan liabilities107 107 — — 
Total liabilities at fair value$347 $107 $229 $11 
(in millions)Total Level 1 Level 2 Level 3 
December 31, 2018        
Deferred compensation plan assets$88
 $88
 $
 $
 
Equity securities43
 43
 
 
 
Investment securities available-for-sale:        
U.S. Treasury and other U.S. government agency securities2,727
 2,727
 
 
 
Residential mortgage-backed securities (a)9,318
 
 9,318
 
 
Total investment securities available-for-sale12,045
 2,727
 9,318
 
 
Derivative assets:        
Interest rate contracts67
 
 58
 9
 
Energy derivative contracts189
 
 189
 
 
Foreign exchange contracts19
 
 19
 
 
Total derivative assets275
 
 266
 9
 
Total assets at fair value$12,451
 $2,858
 $9,584
 $9
 
Derivative liabilities:        
Interest rate contracts$70
 $
 $70
 $
 
Energy derivative contracts186
 
 186
 
 
Foreign exchange contracts13
 
 13
 
 
Total derivative liabilities269
 
 269
 
 
Deferred compensation plan liabilities88
 88
 
 
 
Total liabilities at fair value$357
 $88
 $269
 $
 
(a)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.

(a)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.

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(in millions)Total Level 1 Level 2 Level 3 
December 31, 2017        
Trading securities:        
Deferred compensation plan assets$92
 $92
 $
 $
 
Investment securities available-for-sale:        
U.S. Treasury and other U.S. government agency securities2,727
 2,727
 
 
 
Residential mortgage-backed securities (a)8,124
 
 8,124
 
 
State and municipal securities5
 
 
 5
(b)
Equity and other non-debt securities82
 38
 
 44
(b)
Total investment securities available-for-sale10,938
 2,765
 8,124
 49
 
Derivative assets:        
Interest rate contracts57
 
 43
 14
 
Energy derivative contracts93
 
 93
 
 
Foreign exchange contracts42
 
 42
 
 
Total derivative assets192
 
 178
 14
 
Total assets at fair value$11,222
 $2,857
 $8,302
 $63
 
Derivative liabilities:        
Interest rate contracts$59
 $
 $59
 $
 
Energy derivative contracts91
 
 91
 
 
Foreign exchange contracts40
 
 40
 
 
Total derivative liabilities190
 
 190
 
 
Deferred compensation plan liabilities92
 92
 
 
 
Total liabilities at fair value$282
 $92
 $190
 $
 
(a)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
(b)Auction-rate securities.
There were no transfers of assets or liabilities recorded at fair value on a recurring basis into or out of Level 1, Level 2 and Level 3 fair value measurements during the years ended December 31, 20182021 and 2017.

2020.
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The following table summarizes the changes in Level 3 assets measured at fair value on a recurring basis for the years ended December 31, 20182021 and 2017.2020.
Net Realized/Unrealized Gains (Pretax) Recorded in Earnings (a)
Balance at Beginning of PeriodSalesBalance at End of Period
(in millions)RealizedUnrealized
Year Ended December 31, 2021
Derivative assets:
Interest rate contracts$39 $ $(13)$ $26 
Derivative liabilities:
Other financial derivative(11) (2) (13)
Year Ended December 31, 2020
Derivative assets:
Interest rate contracts$22 — $17 — $39 
Derivative liabilities:
Other financial derivative(9)— (2)— (11)
     Net Realized/Unrealized Gains (Losses) (Pretax)    
         
 
Balance 
at
Beginning
of Period
   Recorded in Earnings (b)Recorded in Other Comprehensive Income (c)   
Balance 
at
End of 
Period
  Change in Classification (a)      Sales & Redemptions 
(in millions)  RealizedUnrealized  
Year Ended December 31, 2018             
Equity securities$
 $44
 $
 $
 $  $(44) $
Investment securities available-for-sale:             
State and municipal securities (d)5
 
 
 
   (5) 
Equity and other non-debt securities (d)44
 (44) 
 
   
 
Total investment securities
available-for-sale
49
 (44) 
 
  
(5) 
Derivative assets:             
Interest rate contracts14
 
 
 (5)   
 9
Year Ended December 31, 2017             
Investment securities available-for-sale:             
State and municipal securities (d)$7
 $
 $
 $
 $  $(2) $5
Equity and other non-debt securities (d)47
 
 
 
 (2) (1) 44
Total investment securities
available-for-sale
54
 
 
 
 (2)
(3) 49
Derivative assets:             
Interest rate contracts11
 
 
 3
   
 14
(a)Realized and unrealized gains and losses due to changes in fair value recorded in other noninterest income on the Consolidated Statements of Income.
(a)Reflects the reclassification of equity securities resulting from the adoption of ASU 2016-01.
(b)Realized and unrealized gains and losses due to changes in fair value recorded in other noninterest income on the Consolidated Statements of Income.
(c)Recorded in net unrealized holding losses arising during the period in the Consolidated Statements of Comprehensive Income.
(d)Auction-rate securities.
Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis
The Corporation may be required to record certain assets and liabilities at fair value on a nonrecurring basis. These include assets that are recorded at the lower of cost or fair value, and were recognized at fair value since it was less than cost at the end of the period.
The following table presents assets recorded at fair value on a nonrecurring basis at December 31, 20182021 and 2017.2020. No liabilities were recorded at fair value on a nonrecurring basis at December 31, 20182021 and 2017.2020.
(in millions)Level 3
December 31, 2021
Loans:
Commercial$125
Real estate construction4
Commercial mortgage17
International4
Total assets at fair value$150
December 31, 2020
Loans:
Commercial$134 
Commercial mortgage16 
Total assets at fair value$150 
(in millions)Level 3
December 31, 2018 
Loans: 
Commercial$33
Commercial mortgage2
Total assets at fair value$35
December 31, 2017 
Loans: 
Commercial$111
Commercial mortgage5
Total assets at fair value$116
Level 3 assets recorded at fair value on a nonrecurring basis at December 31, 20182021 and 20172020 included both nonaccrual loans and TDRs for which a specific allowance was established based on the fair value of collateral. The unobservable inputs were the additional adjustments applied by management to the appraised values to reflect such factors as non-current appraisals and revisions to estimated time to sell. These adjustments are determined based on qualitative judgments made by management on a case-by-case basis and are not quantifiableobservable inputs, although they are used in the determination of fair value.

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Estimated Fair Values of Financial Instruments Not Recorded at Fair Value on a Recurring Basis
The Corporation typically holds the majority of its financial instruments until maturity and thus does not expect to realize many of the estimated fair value amounts disclosed. The disclosures also do not include estimated fair value amounts for items that are not defined as financial instruments, but which have significant value. These include such items as core deposit intangibles, the future earnings potential of significant customer relationships and the value of trust operations and other fee generating businesses. The Corporation believes the imprecision of an estimate could be significant.
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The carrying amount and estimated fair value of financial instruments not recorded at fair value in their entirety on a recurring basis on the Corporation’s Consolidated Balance Sheets are as follows:
 Carrying
Amount
Estimated Fair Value
(in millions)TotalLevel 1Level 2Level 3
December 31, 2021
Assets
Cash and due from banks$1,236 $1,236 $1,236 $ $ 
Interest-bearing deposits with banks21,443 21,443 21,443   
Other short-term investments16 16 16   
Loans held-for-sale6 6  6  
Total loans, net of allowance for loan losses (a)48,697 49,127   49,127 
Customers’ liability on acceptances outstanding5 5 5   
Restricted equity investments92 92 92   
Nonmarketable equity securities (b)5 10 
Liabilities
Demand deposits (noninterest-bearing)45,800 45,800  45,800  
Interest-bearing deposits34,566 34,566  34,566  
Customer certificates of deposit1,973 1,968  1,968  
Total deposits82,339 82,334  82,334  
Acceptances outstanding5 5 5   
Medium- and long-term debt2,796 2,854  2,854  
Credit-related financial instruments(59)(59)  (59)
December 31, 2020
Assets
Cash and due from banks$1,031 $1,031 $1,031 $— $— 
Interest-bearing deposits with banks14,736 14,736 14,736 — — 
Other short-term investments10 10 10 — — 
Loans held-for-sale— — 
Total loans, net of allowance for loan losses (a)51,343 50,601 — — 50,601 
Customers’ liability on acceptances outstanding— — 
Restricted equity investments207 207 207 — — 
Nonmarketable equity securities (b)
Liabilities
Demand deposits (noninterest-bearing)39,420 39,420 — 39,420 — 
Interest-bearing deposits31,316 31,316 — 31,316 — 
Customer certificates of deposit2,133 2,133 — 2,133 — 
Total deposits72,869 72,869 — 72,869 — 
Acceptances outstanding— — 
Medium- and long-term debt5,728 5,790 — 5,790 — 
Credit-related financial instruments(74)(74)— — (74)
(a)Included $150 million of loans recorded at fair value on a nonrecurring basis at both December 31, 2021 and 2020.
(b)Certain investments that are measured at fair value using the net asset value have not been classified in the fair value hierarchy. The fair value amounts presented in the table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the Consolidated Balance Sheets.
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Carrying
Amount
 Estimated Fair Value
(in millions) Total Level 1 Level 2 Level 3
December 31, 2018         
Assets         
Cash and due from banks$1,390
 $1,390
 $1,390
 $
 $
Interest-bearing deposits with banks3,171
 3,171
 3,171
 
 
Loans held-for-sale3
 3
 
 3
 
Total loans, net of allowance for loan losses (a)49,492
 48,889
 
 
 48,889
Customers’ liability on acceptances outstanding4
 4
 4
 
 
Restricted equity investments248
 248
 248
 
 
Nonmarketable equity securities (b)6
 11
 

 

 

Liabilities         
Demand deposits (noninterest-bearing)28,690
 28,690
 
 28,690
 
Interest-bearing deposits24,740
 24,740
 
 24,740
 
Customer certificates of deposit2,131
 2,100
 
 2,100
 
Total deposits55,561
 55,530
 
 55,530
 
Short-term borrowings44
 44
 44
 
 
Acceptances outstanding4
 4
 4
 
 
Medium- and long-term debt6,463
 6,436
 
 6,436
 
Credit-related financial instruments(57) (57) 
 
 (57)
December 31, 2017         
Assets         
Cash and due from banks$1,438
 $1,438
 $1,438
 $
 $
Interest-bearing deposits with banks4,407
 4,407
 4,407
 
 
Investment securities held-to-maturity1,266
 1,246
 
 1,246
 
Loans held-for-sale4
 4
 
 4
 
Total loans, net of allowance for loan losses (a)48,461
 48,153
 
 
 48,153
Customers’ liability on acceptances outstanding2
 2
 2
 
 
Restricted equity investments207
 207
 207
 
 
Nonmarketable equity securities (b)6
 9
 
 
 
Liabilities         
Demand deposits (noninterest-bearing)32,071
 32,071
 
 32,071
 
Interest-bearing deposits23,667
 23,667
 
 23,667
 
Customer certificates of deposit2,165
 2,142
 
 2,142
 
Total deposits57,903
 57,880
 
 57,880
 
Short-term borrowings10
 10
 10
 
 
Acceptances outstanding2
 2
 2
 
 
Medium- and long-term debt4,622
 4,636
 
 4,636
 
Credit-related financial instruments(67) (67) 
 
 (67)
(a)Included $35 million and $116 million of impaired loans recorded at fair value on a nonrecurring basis at December 31, 2018 and 2017, respectively.
(b)Certain investments that are measured at fair value using the net asset value have not been classified in the fair value hierarchy. The fair value amounts presented in the table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the Consolidated Balance Sheets.

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NOTE 3 - INVESTMENT SECURITIES
A summary of the Corporation’s investment securities follows:
(in millions)Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair Value
December 31, 2021
Investment securities available-for-sale:
U.S. Treasury securities$3,010 $22 $39 $2,993 
Residential mortgage-backed securities (a)13,397 67 176 13,288 
Commercial mortgage-backed securities (a)709 2 6 705 
Total investment securities available-for-sale$17,116 $91 $221 $16,986 
December 31, 2020
Investment securities available-for-sale:
U.S. Treasury securities$4,583 $76 $$4,658 
Residential mortgage-backed securities (a)10,169 203 10,370 
Total investment securities available-for-sale$14,752 $279 $$15,028 
(in millions)
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 Fair Value
December 31, 2018       
Investment securities available-for-sale:       
U.S. Treasury and other U.S. government agency securities$2,732
 $14
 $19
 $2,727
Residential mortgage-backed securities (a)9,493
 22
 197
 9,318
Total investment securities available-for-sale$12,225
 $36
 $216
 $12,045
        
December 31, 2017       
Investment securities available-for-sale:       
U.S. Treasury and other U.S. government agency securities$2,743
 $
 $16
 $2,727
Residential mortgage-backed securities (a)8,230
 22
 128
 8,124
State and municipal securities5
 
 
 5
Equity and other non-debt securities83
 1
 2
 82
Total investment securities available-for-sale (b)$11,061
 $23
 $146
 $10,938
        
Investment securities held-to-maturity (c):       
Residential mortgage-backed securities (a)$1,266
 $
 $20
 $1,246
(a)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
(b)Included auction-rate securities at amortized cost and fair value of $51 million and $49 million, respectively, as of December 31, 2017.
(c)The amortized cost of investment securities held-to-maturity included the net unrealized losses of $9 million at December 31, 2017 related to securities transferred from available-for-sale in 2014, which are included in accumulated other comprehensive loss.
In connection with the adoption of ASU 2016-01 on January 1, 2018, cumulative unrealized gains and losses on available-for-sale equity and other non-debt securities were reclassified to retained earnings and the carrying value was reclassified to other short-term investments. Additionally, the Corporation transferred residential mortgage-backed securities with a book value of approximately $1.3 billion from held-to-maturity to available-for-sale upon the adoption of ASU 2017-12. For additional information about the adoption of ASU 2016-01 and ASU 2017-12, refer to Note 1.(a)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
A summary of the Corporation’s investment securities in an unrealized loss position as of December 31, 20182021 and 20172020 follows:
 Less than 12 Months12 Months or moreTotal
(in millions)Fair
Value
Unrealized
Losses
Fair
Value
Unrealized
Losses
Fair
Value
Unrealized
Losses
December 31, 2021
U.S. Treasury securities$465 $6 $1,334 $33 $1,799 $39 
Residential mortgage-backed securities (a)7,197 128 1,128 48 8,325 176 
Commercial mortgage-backed securities (a)346 6   346 6 
Total temporarily impaired securities$8,008 $140 $2,462 $81 $10,470 $221 
December 31, 2020
U.S. Treasury securities$1,119 $$— $— $1,119 $
Residential mortgage-backed securities (a)952 — — 952 
Total temporarily impaired securities$2,071 $$— $— $2,071 $
 Temporarily Impaired
 Less than 12 Months 12 Months or more Total
(in millions)
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
December 31, 2018             
U.S. Treasury and other U.S. government agency securities$
 $
 $1,457
 $19
  $1,457
 $19
 
Residential mortgage-backed securities (a)1,008
 9
 6,412
 188
  7,420
 197
 
Total temporarily impaired securities$1,008
 $9
 $7,869

$207
  $8,877
 $216
 
December 31, 2017             
U.S. Treasury and other U.S. government agency securities$2,727
 $16
 $
 $
  $2,727
 $16
 
Residential mortgage-backed securities (a)3,845
 32
 4,003
 125
  7,848
 157
 
State and municipal securities (b)
 
 5
 
(c) 5
 
(c)
Equity and other non-debt securities (b)
 
 44
 2
  44
 2
 
Total temporarily impaired securities$6,572
 $48
 $4,052
 $127
  $10,624
 $175
 
(a)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
(b)Primarily auction-rate securities.
(c)Unrealized losses less than $0.5 million.

(a)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.

Unrealized losses resulted from changes in market interest rates and liquidity. The Corporation’s portfolio is comprised of securities issued or guaranteed by the U.S. government or government-sponsored enterprises. As such, it is expected that the securities would not be settled at a price less than the amortized cost of the investments. Further, the Corporation does not intend to sell the investments, and it is not more-likely-than-not that it will be required to sell the the investments before recovery of amortized costs. At December 31, 2021, the Corporation had 461 securities in an unrealized loss position with no allowance for credit losses, comprised of 20 U.S. Treasury securities, 406 residential mortgage-backed securities and 35 commercial mortgage-backed securities.
Interest receivable on investment securities totaled $23 million and $18 million at December 31, 2021 and 2020 and was included in accrued income and other assets on the Consolidated Balance Sheets.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries



At December 31, 2018, the Corporation had 375 securities in an unrealized loss position with no credit impairment, including 16 U.S. Treasury securities and 359 residential mortgage-backed securities. The unrealized losses for these securities resulted from changes in market interest rates and liquidity, not changes in credit quality. The Corporation ultimately expects full collection of the carrying amount of these securities, does not intend to sell the securities in an unrealized loss position, and it is not more-likely-than-not that the Corporation will be required to sell the securities in an unrealized loss position prior to recovery of amortized cost. The Corporation does not consider these securities to be other-than-temporarily impaired at December 31, 2018.
Sales, primarily from repositioning $1.3 billion of lower-yielding treasury securities, calls and write-downs of investment securities available-for-sale, primarily from repositioning $1.0 billion of lower-yielding treasury securities in the year ended December 31, 2019, resulted in the following gains and losses recorded in net securities losses on the Consolidated Statements of Income, computed based on the adjusted cost of the specific security. There were no securities gains or losses for the years ended December 31, 2017 and 2016.
(in millions) (in millions)
Year Ended December 312018Year Ended December 31202120202019
Securities gains$2
Securities gains$ $$
Securities losses(21)Securities losses (1)(8)
Net securities losses$(19)Net securities losses$ $— $(7)
The following table summarizes the amortized cost and fair values of debt securities by contractual maturity. Securities with multiple maturity dates are classified in the period of final maturity. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
(in millions) (in millions)
December 31, 2018Amortized Cost Fair Value
December 31, 2021December 31, 2021Amortized CostFair Value
Contractual maturity   Contractual maturity
Within one year$100
 $100
Within one year$170 $172 
After one year through five years2,647
 2,642
After one year through five years3,098 3,088 
After five years through ten years1,522
 1,502
After five years through ten years1,290 1,297 
After ten years7,956
 7,801
After ten years12,558 12,429 
Total investment securities$12,225
 $12,045
Total investment securities$17,116 $16,986 
Included in the contractual maturity distribution in the table above were residential mortgage-backed securities with a total amortized cost of $9.5$13.4 billion and a fair value of $9.3 billion.$13.3 billion and commercial mortgage-backed securities with a total amortized cost of $709 million and a fair value of $705 million. The actual cash flows of mortgage-backed securities may differ from contractual maturity as the borrowers of the underlying loans may exercise prepayment options.
At December 31, 2018,2021, investment securities with a carrying value of $396 million$2.7 billion were pledged where permitted or required by law, including $1.7 billion pledged to the Federal Home Loan Bank (FHLB) as collateral for potential future borrowings of approximately $1.6 billion and $1.0 billion to secure $274$946 million of liabilities, primarily public and other deposits of state and local government agencies and derivative instruments. For information on FHLB borrowings, refer to Note 12.



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries



NOTE 4 – CREDIT QUALITY AND ALLOWANCE FOR CREDIT LOSSES
The following table presents an aging analysis of the recorded balanceamortized cost basis of loans.
Loans Past Due and Still Accruing   
(in millions)30-59
Days
60-89 
Days
90 Days
or More
TotalNonaccrual
Loans
Current
Loans (a)
Total 
Loans
December 31, 2021
Business loans:
Commercial$35 $18 $6 $59 $173 $29,134 $29,366 
Real estate construction:
Commercial Real Estate business line (b)     2,391 2,391 
Other business lines (c)15 1  16 6 535 557 
Total real estate construction15 1  16 6 2,926 2,948 
Commercial mortgage:
Commercial Real Estate business line (b)    1 3,337 3,338 
Other business lines (c)18 4 16 38 31 7,848 7,917 
Total commercial mortgage18 4 16 38 32 11,185 11,255 
Lease financing5   5  635 640 
International5 8 1 14 5 1,189 1,208 
Total business loans78 31 23 132 216 45,069 45,417 
Retail loans:
Residential mortgage4   4 36 1,731 1,771 
Consumer:
Home equity4 3  7 12 1,514 1,533 
Other consumer32 1 4 37  527 564 
Total consumer36 4 4 44 12 2,041 2,097 
Total retail loans40 4 4 48 48 3,772 3,868 
Total loans$118 $35 $27 $180 $264 $48,841 $49,285 
December 31, 2020
Business loans:
Commercial$62 $115 $33 $210 $252 $32,291 $32,753 
Real estate construction:
Commercial Real Estate business line (b)31 — — 31 — 3,626 3,657 
Other business lines (c)— — 415 425 
Total real estate construction40 — — 40 4,041 4,082 
Commercial mortgage:
Commercial Real Estate business line (b)51 — 52 2,218 2,273 
Other business lines (c)48 40 93 26 7,520 7,639 
Total commercial mortgage99 41 145 29 9,738 9,912 
Lease financing14 — 15 578 594 
International— — — — — 926 926 
Total business loans215 156 39 410 283 47,574 48,267 
Retail loans:
Residential mortgage11 — 15 47 1,768 1,830 
Consumer:
Home equity— 17 1,563 1,588 
Other consumer10 — 16 — 590 606 
Total consumer17 24 17 2,153 2,194 
Total retail loans28 39 64 3,921 4,024 
Total loans$243 $161 $45 $449 $347 $51,495 $52,291 
 Loans Past Due and Still Accruing      
(in millions)
30-59
Days
 
60-89 
Days
 
90 Days
or More
 Total 
Nonaccrual
Loans
 
Current
Loans
 
Total 
Loans
December 31, 2018             
Business loans:             
Commercial$34
 $26
 $8
 $68
 $141
 $31,767
 $31,976
Real estate construction:             
Commercial Real Estate business line (a)6
 
 
 6
 
 2,681
 2,687
Other business lines (b)6
 
 
 6
 
 384
 390
Total real estate construction12
 
 
 12
 
 3,065
 3,077
Commercial mortgage:             
Commercial Real Estate business line (a)4
 
 
 4
 2
 1,737
 1,743
Other business lines (b)32
 5
 8
 45
 18
 7,300
 7,363
Total commercial mortgage36
 5
 8
 49
 20
 9,037
 9,106
Lease financing
 
 
 
 2
 505
 507
International
 
 
 
 3
 1,010
 1,013
Total business loans82
 31
 16
 129
 166
 45,384
 45,679
Retail loans:             
Residential mortgage11
 3
 
 14
 36
 1,920
 1,970
Consumer:             
Home equity4
 1
 
 5
 19
 1,741
 1,765
Other consumer1
 
 
 1
 
 748
 749
Total consumer5
 1
 
 6
 19
 2,489
 2,514
Total retail loans16
 4
 
 20
 55
 4,409
 4,484
Total loans$98
 $35
 $16
 $149
 $221
 $49,793
 $50,163
December 31, 2017             
Business loans:             
Commercial$79
 $134
 $12
 $225
 $309
 $30,526
 $31,060
Real estate construction:             
Commercial Real Estate business line (a)3
 
 
 3
 
 2,627
 2,630
Other business lines (b)4
 
 
 4
 
 327
 331
Total real estate construction7
 
 
 7
 
 2,954
 2,961
Commercial mortgage:             
Commercial Real Estate business line (a)14
 
 
 14
 9
 1,808
 1,831
Other business lines (b)27
 6
 22
 55
 22
 7,251
 7,328
Total commercial mortgage41
 6
 22
 69
 31
 9,059
 9,159
Lease financing
 
 
 
 4
 464
 468
International13
 
 
 13
 6
 964
 983
Total business loans140
 140
 34
 314
 350
 43,967
 44,631
Retail loans:             
Residential mortgage10
 2
 
 12
 31
 1,945
 1,988
Consumer:             
Home equity5
 1
 
 6
 21
 1,789
 1,816
Other consumer4
 
 1
 5
 
 733
 738
Total consumer9
 1
 1
 11
 21
 2,522
 2,554
Total retail loans19
 3
 1
 23
 52
 4,467
 4,542
Total loans$159
 $143
 $35
 $337
 $402
 $48,434
 $49,173
(a)Includes $22 million and $141 million of loans with deferred payments not considered past due in accordance with the CARES Act, at December 31, 2021 and 2020, respectively.
(a)Primarily loans to real estate developers.
(b)Primarily loans secured by owner-occupied real estate.

(b)Primarily loans to real estate developers.
(c)Primarily loans secured by owner-occupied real estate.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries



The following table presents loans by credit quality indicator (CQI) and vintage year. CQI is based on internal risk ratings assigned to each business loan at the time of approval and subjected to subsequent reviews, generally at least annually, and to pools of retail loans with similar risk characteristics. Vintage year is the year of origination or major modification.
 December 31, 2021
Vintage Year
(in millions)20212020201920182017PriorRevolversRevolvers Converted to TermTotal
Business loans:
Commercial:
Pass (a)$5,270 (b)$1,740 (b)$1,528 $947 $713 $763 $17,241 $10 $28,212 
Criticized (c)101 120 105 86 26 94 620 2 1,154 
Total commercial5,371 1,860 1,633 1,033 739 857 17,861 12 29,366 
Real estate construction
Pass (a)458 858 849 424 158 34 132  2,913 
Criticized (c) 3  13 8 8 3  35 
Total real estate construction458 861 849 437 166 42 135  2,948 
Commercial mortgage
Pass (a)2,491 1,932 1,444 1,343 1,018 2,298 481  11,007 
Criticized (c)17 44 50 22 23 87 5  248 
Total commercial mortgage2,508 1,976 1,494 1,365 1,041 2,385 486  11,255 
Lease financing
Pass (a)166 88 97 50 38 179   618 
Criticized (c) 2 10 8 1 1   22 
Total lease financing166 90 107 58 39 180   640 
International
Pass (a)381 141 103 29 1 16 480  1,151 
Criticized (c)20 10 3 5 4 8 7  57 
Total international401 151 106 34 5 24 487  1,208 
Total business loans8,904 4,938 4,189 2,927 1,990 3,488 18,969 12 45,417 
Retail loans:
Residential mortgage
Pass (a)443 527 164 83 111 407   1,735 
Criticized (c)5  1 2 7 21   36 
Total residential mortgage448 527 165 85 118 428   1,771 
Consumer:
Home equity
Pass (a)     11 1,460 45 1,516 
Criticized (c)     1 12 4 17 
Total home equity     12 1,472 49 1,533 
Other consumer
Pass (a)101 68 13 9 1 31 337  560 
Criticized (c)      4  4 
Total other consumer101 68 13 9 1 31 341  564 
Total consumer101 68 13 9 1 43 1,813 49 2,097 
Total retail loans549 595 178 94 119 471 1,813 49 3,868 
Total loans$9,453 $5,533 $4,367 $3,021 $2,109 $3,959 $20,782 $61 $49,285 
Table continues on the following page.
F-67
 Internally Assigned Rating  
(in millions)Pass (a) 
Special
Mention (b)
 Substandard (c) Nonaccrual (d) Total
December 31, 2018         
Business loans:         
Commercial$30,817
 $464
 $554
 $141
 $31,976
Real estate construction:         
Commercial Real Estate business line (e)2,664
 23
 
 
 2,687
Other business lines (f)382
 8
 
 
 390
Total real estate construction3,046
 31
 
 
 3,077
Commercial mortgage:         
Commercial Real Estate business line (e)1,682
 14
 45
 2
 1,743
Other business lines (f)7,157
 118
 70
 18
 7,363
Total commercial mortgage8,839
 132
 115
 20
 9,106
Lease financing500
 3
 2
 2
 507
International996
 4
 10
 3
 1,013
Total business loans44,198
 634
 681
 166
 45,679
Retail loans:         
Residential mortgage1,931
 3
 
 36
 1,970
Consumer:         
Home equity1,738
 
 8
 19
 1,765
Other consumer748
 1
 
 
 749
Total consumer2,486
 1
 8
 19
 2,514
Total retail loans4,417
 4
 8
 55
 4,484
Total loans$48,615
 $638
 $689
 $221
 $50,163
December 31, 2017         
Business loans:         
Commercial$29,263
 $591
 $897
 $309
 $31,060
Real estate construction:         
Commercial Real Estate business line (e)2,630
 
 
 
 2,630
Other business lines (f)327
 4
 
 
 331
Total real estate construction2,957
 4
 
 
 2,961
Commercial mortgage:         
Commercial Real Estate business line (e)1,759
 20
 43
 9
 1,831
Other business lines (f)7,099
 115
 92
 22
 7,328
Total commercial mortgage8,858
 135
 135
 31
 9,159
Lease financing440
 23
 1
 4
 468
International946
 11
 20
 6
 983
Total business loans42,464
 764
 1,053
 350
 44,631
Retail loans:         
Residential mortgage1,955
 2
 
 31
 1,988
Consumer:         
Home equity1,786
 1
 8
 21
 1,816
Other consumer737
 1
 
 
 738
Total consumer2,523
 2
 8
 21
 2,554
Total retail loans4,478
 4
 8
 52
 4,542
Total loans$46,942
 $768
 $1,061
 $402
 $49,173
(a)Includes all loans not included in the categories of special mention, substandard or nonaccrual.
(b)Special mention loans are accruing loans that have potential credit weaknesses that deserve management’s close attention, such as loans to borrowers who may be experiencing financial difficulties that may result in deterioration of repayment prospects from the borrower at some future date. This category is generally consistent with the "special mention" category as defined by regulatory authorities.
(c)Substandard loans are accruing loans that have a well-defined weakness, or weaknesses, such as loans to borrowers who may be experiencing losses from operations or inadequate liquidity of a degree and duration that jeopardizes the orderly repayment of the loan. Substandard loans also are distinguished by the distinct possibility of loss in the future if these weaknesses are not corrected. This category is generally consistent with the "substandard" category as defined by regulatory authorities.
(d)Nonaccrual loans are loans for which the accrual of interest has been discontinued. For further information regarding nonaccrual loans, refer to the Nonperforming Assets subheading in Note 1 - Basis of Presentation and Accounting Policies. A significant majority of nonaccrual loans are generally consistent with the "substandard" category and the remainder are generally consistent with the "doubtful" category as defined by regulatory authorities.
(e)Primarily loans to real estate developers.
(f)Primarily loans secured by owner-occupied real estate.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries



December 31, 2020
Vintage Year
20202019201820172016PriorRevolversRevolvers Converted to TermTotal
Business loans:
Commercial:
Pass (a)$5,991 (b)$2,316 $1,563 $1,051 $429 $755 $18,416 $17 $30,538 
Criticized (c)30 281 191 116 64 166 1,365 2,215 
Total commercial6,021 2,597 1,754 1,167 493 921 19,781 19 32,753 
Real estate construction:
Pass (a)433 1,080 1,244 631 335 141 171 — 4,035 
Criticized (c)28 — — 47 
Total real estate construction436 1,108 1,249 639 335 142 173 — 4,082 
Commercial mortgage:
Pass (a)2,053 1,559 1,146 1,120 818 2,272 431 — 9,399 
Criticized (c)47 130 42 45 41 193 15 — 513 
Total commercial mortgage2,100 1,689 1,188 1,165 859 2,465 446 — 9,912 
Lease financing
Pass (a)109 122 71 50 14 201 — — 567 
Criticized (c)17 — — — 27 
Total lease financing111 139 76 52 15 201 — — 594 
International
Pass (a)274 161 103 11 64 245 — 861 
Criticized (c)13 18 13 — 65 
Total international287 169 121 15 10 66 258 — 926 
Total business loans8,955 5,702 4,388 3,038 1,712 3,795 20,658 19 48,267 
Retail loans:
Residential mortgage
Pass (a)639 230 119 197 196 398 — — 1,779 
Criticized (c)32 — — 51 
Total residential mortgage646 232 121 203 198 430 — — 1,830 
Consumer:
Home equity
Pass (a)— — — — — 15 1,489 63 1,567 
Criticized (c)— — — — — 13 21 
Total home equity— — — — — 16 1,502 70 1,588 
Other consumer
Pass (a)113 23 12 41 404 — 598 
Criticized (c)— — — — — — 
Total other consumer113 23 14 41 410 — 606 
Total consumer113 23 14 57 1,912 70 2,194 
Total retail loans759 255 135 205 201 487 1,912 70 4,024 
Total loans$9,714 $5,957 $4,523 $3,243 $1,913 $4,282 $22,570 $89 $52,291 
(a)Includes all loans not included in the categories of special mention, substandard or nonaccrual.
(b)Includes Small Business Administration Paycheck Protection Program (PPP) loans of $292 million and $166 million originating in 2021 and 2020, respectively, at December 31, 2021, and PPP loans of $3.5 billion originating in 2020 at December 31, 2020.
(c)Includes loans with an internal rating of special mention, substandard loans for which the accrual of interest has not been discontinued and nonaccrual loans. Special mention loans have potential credit weaknesses that deserve management’s close attention, such as loans to borrowers who may be experiencing financial difficulties that may result in deterioration of repayment prospects from the borrower at some future date. Accruing substandard loans have a well-defined weakness, or weaknesses, such as loans to borrowers who may be experiencing losses from operations or inadequate liquidity of a degree and duration that jeopardizes the orderly repayment of the loan. Substandard loans are also distinguished by the distinct possibility of loss in the future if these weaknesses are not corrected. Nonaccrual loans are loans for which the accrual of interest has been discontinued. For further information regarding nonaccrual loans, refer to the Nonperforming Assets subheading in Note 1 - Basis of Presentation and Accounting Policies. These categories are generally consistent with the "special mention" and "substandard" categories as defined by regulatory authorities. A minority of nonaccrual loans are consistent with the "doubtful" category.
Loan interest receivable totaled $120 million and $141 million at December 31, 2021 and 2020, respectively, and was included in accrued income and other assets on the Consolidated Balance Sheets.
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Comerica Incorporated and Subsidiaries

Allowance for Credit Losses
The following table summarizes nonperforming assets.details the changes in the allowance for credit losses.
 202120202019
(in millions)Business LoansRetail LoansTotalBusiness LoansRetail LoansTotalBusiness LoansRetail LoansTotal
Years Ended December 31,
Balance at beginning of period:
Allowance for loan losses$895 $53 $948 $601 $36 $637 $627 $44 $671 
Allowance for credit losses on lending-related commitments35 9 44 28 31 26 30 
Allowance for credit losses930 62 992 629 39 668 653 48 701 
Cumulative effect of change in accounting principle   (42)25 (17)— — — 
Loan charge-offs(67)(3)(70)(233)(5)(238)(147)(5)(152)
Recoveries on loans previously charged-off76 4 80 38 42 40 45 
Net loan recoveries (charge-offs)9 1 10 (195)(1)(196)(107)— (107)
Provision for credit losses:
Provision for loan losses(373)3 (370)531 (7)524 81 (8)73 
Provision for credit losses on lending-related commitments(11)(3)(14)13 (1)
Provision for credit losses(384) (384)538 (1)537 83 (9)74 
Balance at end of period:
Allowance for loan losses531 57 588 895 53 948 601 36 637 
Allowance for credit losses on lending-related commitments24 6 30 35 44 28 31 
Allowance for credit losses$555 $63 $618 $930 $62 $992 $629 $39 $668 
Allowance for loan losses as a percentage of total loans1.17 %1.47 %1.19 %1.85 %1.32 %1.81 %1.30 %0.84 %1.27 %
Allowance for loan losses as a percentage of total loans excluding PPP loans1.18 n/a1.20 2.00n/a1.94n/an/an/a
Allowance for credit losses as a percentage of total loans1.22 1.63 1.26 1.93 1.55 1.90 1.37 0.91 1.33 
Allowance for credit losses as a percentage of total loans excluding PPP loans1.24 n/a1.27 2.08n/a2.03n/an/an/a
(in millions)December 31, 2018 December 31, 2017
Nonaccrual loans$221
 $402
Reduced-rate loans (a)8
 8
Total nonperforming loans229
 410
Foreclosed property (b)1
 5
Total nonperforming assets$230
 $415
n/a - not applicable
(a)There were no reduced-rate business loans at both December 31, 2018 and 2017. Reduced-rate retail loans were $8 million at both December 31, 2018 and 2017.
(b)













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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Nonaccrual Loans
The following table presents additional information regarding nonaccrual loans. No interest income was recognized on nonaccrual loans for the years ended December 31, 2021, 2020 and 2019.
(in millions)Nonaccrual Loans with No Related AllowanceNonaccrual Loans with Related AllowanceTotal
Nonaccrual
Loans
December 31, 2021
Business loans:
Commercial$8 $165 $173 
Real estate construction:
Other business lines (a) 6 6 
Commercial mortgage:
Commercial Real Estate business line (b) 1 1 
Other business lines (a)4 27 31 
Total commercial mortgage4 28 32 
International 5 5 
Total business loans12 204 216 
Retail loans:
Residential mortgage36  36 
Consumer:
Home equity12  12 
Total retail loans48  48 
Total nonaccrual loans$60 $204 $264 
December 31, 2020
Business loans:
Commercial$57 $195 $252 
Real estate construction:
Other business lines (a)— 
Commercial mortgage:
Commercial Real Estate business line (b)
Other business lines (a)21 26 
Total commercial mortgage23 29 
Lease financing— 
Total business loans63 220 283 
Retail loans:
Residential mortgage47 — 47 
Consumer:
Home equity17 — 17 
Total retail loans64 — 64 
Total nonaccrual loans$127 $220 $347 
(a)Primarily loans secured by owner-occupied real estate.
(b)Primarily loans to real estate developers.
Foreclosed Properties
Foreclosed properties totaled $1 million and $8 million at December 31, 2021 and 2020, respectively. There were no foreclosed residential real estate properties at December 31, 2018 and $4 million at December 31, 2017.
There were $1 million of retail loans secured by residential real estate properties in process of foreclosure included in nonaccrual loans at bothin either of the years ended December 31, 20182021 and 2017.2020.
Allowance for Credit Losses
The following table details the changes in the allowance for loan losses and related loan amounts.



F-70
 2018 2017 2016
(in millions)Business LoansRetail Loans Total Business LoansRetail Loans Total Business LoansRetail Loans Total
               
Years Ended December 31              
Allowance for loan losses:              
Balance at beginning of period$661
$51
 $712
 $682
$48
 $730
 $579
$55
 $634
Loan charge-offs(99)(4) (103) (143)(6) (149) (207)(7) (214)
Recoveries on loans previously charged-off47
5
 52
 50
7
 57
 63
5
 68
Net loan (charge-offs) recoveries(52)1
 (51) (93)1
 (92) (144)(2) (146)
Provision for loan losses19
(8) 11
 71
2
 73
 246
(5) 241
Foreign currency translation adjustment(1)
 (1) 1

 1
 1

 1
Balance at end of period$627
$44
 $671
 $661
$51
 $712
 $682
$48
 $730
               
As a percentage of total loans1.37%0.97% 1.34% 1.48%1.12% 1.45% 1.53%1.08% 1.49%
               
December 31              
Allowance for loan losses:              
Individually evaluated for impairment$27
$
 $27
 $67
$
 $67
 $86
$3
 $89
Collectively evaluated for impairment600
44
 644
 594
51
 645
 596
45
 641
Total allowance for loan losses$627
$44
 $671
 $661
$51
 $712
 $682
$48
 $730
Loans:              
Individually evaluated for impairment$240
$36
 $276
 $443
$34
 $477
 $566
$48
 $614
Collectively evaluated for impairment45,439
4,448
 49,887
 44,188
4,508
 48,696
 44,058
4,416
 48,474
Total loans evaluated for impairment$45,679
$4,484
 $50,163
 $44,631
$4,542
 $49,173
 $44,624
$4,464
 $49,088


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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries



Changes in the allowance for credit losses on lending-related commitments, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, are summarized in the following table.
(in millions)     
Years Ended December 312018 2017 2016
Balance at beginning of period$42
 $41
 $45
Charge-offs on lending-related commitments (a)
 
 (11)
Provision for credit losses on lending-related commitments(12) 1
 7
Balance at end of period$30
 $42
 $41
(a)    Charge-offs result from the sale of unfunded lending-related commitments.
Individually Evaluated Impaired Loans
The following table presents additional information regarding individually evaluated impaired loans.
 Recorded Investment In:    
(in millions)
Impaired
Loans with
No Related
Allowance
 
Impaired
Loans with
Related
Allowance
 
Total
Impaired
Loans
 
Unpaid
Principal
Balance
 
Related
Allowance
for Loan
Losses
December 31, 2018         
Business loans:         
Commercial$50
 $130
 $180
 $227
 $24
Commercial mortgage:         
Commercial Real Estate business line (a)39
 
 39
 49
 
Other business lines (b)2
 16
 18
 23
 3
Total commercial mortgage41
 16
 57
 72
 3
International2
 1
 3
 8
 
Total business loans93
 147
 240
 307
 27
Retail loans:         
Residential mortgage16
 8
 24
 25
 
Consumer:         
Home equity11
 
 11
 13
 
Other consumer1
 
 1
 1
 
Total consumer12
 
 12
 14
 
Total retail loans (c)28
 8
 36
 39
 
Total individually evaluated impaired loans$121
 $155
 $276
 $346
 $27
December 31, 2017         
Business loans:         
Commercial$105
 $267
 $372
 $460
 $63
Commercial mortgage:         
Commercial Real Estate business line (a)39
 1
 40
 49
 
Other business lines (b)3
 22
 25
 29
 3
Total commercial mortgage42
 23
 65
 78
 3
International
 6
 6
 17
 1
Total business loans147
 296
 443
 555
 67
Retail loans:         
Residential mortgage14
 8
 22
 22
 
Consumer:         
Home equity11
 
 11
 14
 
Other consumer1
 
 1
 2
 
Total consumer12
 
 12
 16
 
Total retail loans (c)26
 8
 34
 38
 
Total individually evaluated impaired loans$173
 $304
 $477
 $593
 $67
(a)Primarily loans to real estate developers.
(b)Primarily loans secured by owner-occupied real estate.
(c)Individually evaluated retail loans generally have no related allowance for loan losses, primarily due to policy which results in direct write-downs of most restructured retail loans.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries


The following table presents information regarding average individually evaluated impaired loans and the related interest recognized. Interest income recognized for the period primarily related to performing restructured loans.
 Individually Evaluated Impaired Loans
 2018 2017 2016
(in millions)Average Balance for the Period Interest Income Recognized for the Period Average Balance for the Period Interest Income Recognized for the Period Average Balance for the Period Interest Income Recognized for the Period
Years Ended December 31           
Business loans:           
Commercial$262
 $5
 $451
 $8
 $550
 $10
Commercial mortgage:           
Commercial Real Estate business line (a)40
 4
 21
 2
 9
 
Other business lines (b)23
 
 31
 
 31
 1
Total commercial mortgage63
 4
 52
 2
 40
 1
International4
 
 8
 
 18
 
Total business loans329
 9
 511
 10
 608
 11
Retail loans:           
Residential mortgage21
 
 24
 
 15
 
Consumer:           
Home equity11
 
 13
 
 13
 
Other consumer1
 
 3
 
 4
 
Total consumer12
 
 16
 
 17
 
Total retail loans33
 
 40
 
 32
 
Total individually evaluated impaired loans$362
 $9
 $551
 $10
 $640
 $11
(a)Primarily loans to real estate developers.
(b)Primarily loans secured by owner-occupied real estate.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries


Troubled Debt Restructurings
The following tables detailtable details the recorded balanceamortized cost basis at December 31, 20182021 and 20172020 of loans considered to be TDRs that were restructured during the years ended December 31, 20182021 and 2017,2020, by type of modification. In cases of loans with more than one type of modification, the loans were categorized based on the most significant modification.
20212020
Type of ModificationType of Modification
(in millions)Principal Deferrals (a)Interest Rate ReductionsTotal ModificationsPrincipal Deferrals (a)Interest Rate ReductionsTotal Modifications
Years Ended December 31,
Business loans:
Commercial$8 $ $8 $18 $— $18 
Commercial mortgage:
Other business lines (b)   — 
Total business loans8  8 20 — 20 
Retail loans:
Consumer:
Home equity (c) 2 2 — 
Total retail loans 2 2 — 
Total loans$8 $2 $10 $20 $$22 
 2018 2017
 Type of Modification  Type of Modification 
(in millions)Principal Deferrals (a)Interest Rate ReductionsTotal Modifications Principal Deferrals (a)Interest Rate ReductionsAB Note Restructures (b)Total Modifications
Years Ended December 31          
Business loans:          
Commercial$27
 $
$27
 $77
 $18
$21
$116
Commercial mortgage:          
Commercial Real Estate business line (c)
 

 37
 

37
Other business lines (d)2
 
2
 3
 

3
Total commercial mortgage2
 
2
 40
 

40
International1
 
1
 
 


Total business loans30
 
30
 117
 18
21
156
Retail loans:          
Consumer:          
Home equity (e)
 3
3
 1
 2

3
Total loans$30
 $3
$33
 $118
 $20
$21
$159
(a)Primarily represents loan balances where terms were extended by more than an insignificant time period, typically more than 180 days, at or above contractual interest rates. Also includes commercial loans restructured in bankruptcy.
(a)Primarily represents loan balances where terms were extended 90 days or more at or above contractual interest rates.
(b)Loan restructurings whereby the original loan is restructured into two notes: an "A" note, which generally reflects the portion of the modified loan which is expected to be collected; and a "B" note, which is fully charged off.
(c)Primarily loans to real estate developers.
(d)Primarily loans secured by owner-occupied real estate.
(e)
(b)Primarily loans secured by owner-occupied real estate.
(c)Includes bankruptcy loans for which the court has discharged the borrower's obligation and the borrower has not reaffirmed the debt.
At December 31, 2018 and 2017, commitments to lend additional funds to borrowers whose terms have been modified in TDRs totaled $20 million and $31 million, respectively.the borrower has not reaffirmed the debt.
The majority of the modifications considered to be TDRs that occurred during the years ended December 31, 2018 and 2017 were principal deferrals. The Corporation charges interest on principal balances outstanding during deferral periods. Additionally, none of the modifications involved forgiveness of principal. As a result, the current and future financial effects of the recorded balance of loans consideredThere were no commitments to belend additional funds to borrowers whose terms have been modified in TDRs that were restructured during the years endedat December 31, 20182021 and 2017 were insignificant.
2020. On an ongoing basis, the Corporation monitors the performance of modified loans to their restructured terms. The allowance for loan losses continues to be reassessed on the basis of an individual evaluation of the loan. Loans with terms extended by more than an insignificant time period in accordance with the provisions of the CARES Act, primarily retail loans, were $22 million and $72 million at December 31, 2021 and 2020, respectively and not reported as TDRs.
For principal deferrals, incremental deterioration in the credit quality of the loan, represented by a downgrade in the risk rating of the loan, for example, due to missed interest payments or a reduction of collateral value, is considered a subsequent default. For interest rate reductions, and AB note restructures, a subsequent payment default is defined in terms of delinquency, when a principal or interest payment is 90 days past due. ThereOf the TDRs modified during the years ended December 31, 2021 and 2020, there were no subsequent defaults of principal deferrals duringor interest rate reductions for the year ended December 31, 20182021, compared to $10 million of principal deferrals and $3 million during the year ended December 31, 2017. There were no subsequent payment defaults of interest rate reductions or AB note restructures duringin the December 31, 2018 and 2017.comparable period in 2020.

NOTE 5 - SIGNIFICANT GROUP CONCENTRATIONS OF CREDIT RISK
Concentrations of credit risk may exist when a number of borrowers are engaged in similar activities, or activities in the same geographic region, and have similar economic characteristics that would cause them to be similarly impacted by changes in economic or other conditions. Concentrations of both on-balance sheet and off-balance sheet credit risk are controlled and monitored as part of credit policies. The Corporation is a regional financial services holding company with a geographic concentration of its on-balance-sheet and off-balance-sheet activities in Michigan, California and Texas.
As outlined below,At December 31, 2021, the Corporation has aCorporation's concentration of credit risk with the automotive industry. Loans to automotive dealerscommercial real estate industry, which includes a portfolio of real estate construction and to borrowers involved with automotive production are reported as automotive, as management believes thesecommercial mortgage loans, have similar economic characteristics that might cause them to react similarly to changes in economic conditions. This aggregation

represented 29 percent of total loans. The following table summarizes the Corporation's commercial real estate loan portfolio by loan category.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries



(in millions)  
December 3120212020
Real estate construction loans:
Commercial Real Estate business line (a)$2,391 $3,657 
Other business lines (b)557 425 
Total real estate construction loans2,948 4,082 
Commercial mortgage loans:
Commercial Real Estate business line (a)3,338 2,273 
Other business lines (b)7,917 7,639 
Total commercial mortgage loans11,255 9,912 
Total commercial real estate loans$14,203 $13,994 
Total unused commitments on commercial real estate loans$4,030 $3,272 
involves(a)Primarily loans to real estate developers.
(b)Primarily loans secured by owner-occupied real estate.
The Corporation also has a concentration of credit risk with the exercise of judgment. Included in automotive production are: (a) original equipment manufacturers and Tier 1 and Tier 2 suppliers that produce components used in vehicles and whose primary revenue source is automotive-related (“primary” defined as greater than 50%) and (b) other manufacturers that produce components used in vehicles and whose primary revenue source is automotive-related. Loans less than $1 million and loans recorded in the Small Business loan portfolio were excluded from the definition.industry. Outstanding loans, included in commercial loans on the Consolidated Balance Sheets, and total exposure (outstanding loans, unused commitments and standby letters of credit) to companies related to the automotive industry were as follows:
(in millions)  
December 3120212020
Automotive loans:
Production (a)$1,112 $1,093 
Dealer4,162 5,692 
Total automotive loans$5,274 $6,785 
Total automotive exposure:
Production (a)$2,041 $2,267 
Dealer10,665 9,653 
Total automotive exposure$12,706 $11,920 
(in millions)   
December 312018 2017
Automotive loans:   
Production$1,331
 $1,344
Dealer8,097
 7,592
Total automotive loans$9,428
 $8,936
Total automotive exposure:   
Production$2,396
 $2,439
Dealer10,044
 9,405
Total automotive exposure$12,440
 $11,844
(a)Excludes PPP loans.
Further, the Corporation’s portfolio of commercial real estate loans, which includes real estate construction and commercial mortgage loans, was as follows.
(in millions)   
December 312018 2017
Real estate construction loans:   
Commercial Real Estate business line (a)$2,687
 $2,630
Other business lines (b)390
 331
Total real estate construction loans3,077
 2,961
Commercial mortgage loans:   
Commercial Real Estate business line (a)1,743
 1,831
Other business lines (b)7,363
 7,328
Total commercial mortgage loans9,106
 9,159
Total commercial real estate loans$12,183
 $12,120
Total unused commitments on commercial real estate loans$3,146
 $3,018
(a)
Primarily loans to real estate developers.
(b)
Primarily loans secured by owner-occupied real estate.
NOTE 6 - PREMISES AND EQUIPMENT
A summary of premises and equipment by major category follows:
(in millions)   (in millions)  
December 312018 2017December 3120212020
Land$85
 $85
Land$85 $86 
Buildings and improvements842
 813
Buildings and improvements852 847 
Furniture and equipment492
 484
Furniture and equipment516 485 
Total cost1,419
 1,382
Total cost1,453 1,418 
Less: Accumulated depreciation and amortization(944) (916)Less: Accumulated depreciation and amortization(999)(959)
Net book value$475
 $466
Net book value$454 $459 
The Corporation conducts a portion of its business from leased facilities and leases certain equipment. Rental expenseRefer to Note 26 for more information on leased propertiesfacilities and equipment amounted to $75 million, $78 million and $80 million in 2018, 2017 and 2016, respectively.
As of December 31, 2018, future minimum rental payments under operating leases were as follows:equipment.
F-72
(in millions) 
Years Ending December 31  
2019$67
202059
202150
202240
202334
Thereafter127
Total$377

Table of Contents
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 7 - GOODWILL AND CORE DEPOSIT INTANGIBLES
The following table summarizes the carrying value of goodwill by reporting unit for the years ended December 31, 20182021 and 2017.2020.
(in millions)   (in millions)
December 312018 2017December 3120212020
Business Bank$473
 $380
Commercial BankCommercial Bank$473 $473 
Retail Bank101
 194
Retail Bank101 101 
Wealth Management61
 61
Wealth Management61 61 
Total$635
 $635
Total$635 $635 
The Corporation performs its annual evaluation of goodwill impairment in the third quarter of each year and may elect to perform a quantitative impairment analysis or first conduct a qualitative analysis to determine if a quantitative analysis is necessary. In addition, the Corporation evaluates goodwill impairment on an interim basis if events or changes in circumstances between annual tests indicate additional testing may be warranted to determine if goodwill might be impaired.
In 20182021 and 2017,2020, the annual test of goodwill impairment was performed as of the beginning of the third quarter. In 2018,quarter, and in both periods, a qualitative assessment was performed resultingresulted in the Corporation determining goodwill was not impaired, as it was more likely than not that the fair value of each reporting unit exceeded its carrying value.
Due to significant deterioration of economic conditions and the spread of the coronavirus global pandemic in first quarter 2020, the Corporation assessed impairment indicators and determined it was more likely than not that the fair value of each reporting unit exceeded its carrying value. In 2017,second quarter 2020, the Corporation performed an interim quantitative impairment test in response to continued macroeconomic deterioration as a result of the global pandemic and the ongoing impacts to the banking industry and markets in which the Corporation operates. At the conclusion of the second quarter 2020 quantitative assessment was performed andtest, the Corporation determined that the estimated fair values of all reporting units substantially exceeded their carrying amounts,values, including goodwill, indicating goodwill was not impaired.
During 2018 the Corporation reorganized certain reporting structures. As a result, Small Business, formerly a component of the Retail Bank, became a component of the Business Bank. Accordingly, the Corporation reallocated $93 million of goodwill from the Retail Bank to the Business Bank. The Corporation subsequently performed an additional qualitative impairment analysis and again determined that it was more-likely-than-not that the fair value of each reporting unit exceeded its carrying value and that performing a quantitative impairment test was not necessary. There have been no events since the annual test performed in the third quarter 2018 that would indicate that it was more-likely-than-not that goodwill had become impaired.goodwill.
A summary of core deposit intangible carrying value and related accumulated amortization follows:
(in millions)
December 3120212020
Gross carrying amount$34 $34 
Accumulated amortization$(34)$(33)
Net carrying amount$— $
(in millions)   
December 312018 2017
Gross carrying amount$34
 $34
Accumulated amortization(30) (28)
Net carrying amount$4
 $6
The Corporation recorded amortization expense related to the core deposit intangible of $1 million, $1 million and $2 million for both the years ended December 31, 20182021, 2020 and 2017. At 2019, respectively. The core deposit intangible was fully amortized at December 31, 2018, estimated future amortization expense was as follows:2021.
(in millions) 
Years Ending December 31 
2019$2
20201
20211
Total$4
NOTE 8 - DERIVATIVE AND CREDIT-RELATED FINANCIAL INSTRUMENTS
In the normal course of business, the Corporation enters into various transactions involving derivative and credit-related financial instruments to manage exposure to fluctuations in interest rate, foreign currency and other market risks and to meet the financing needs of customers (customer-initiated derivatives). These financial instruments involve, to varying degrees, elements of market and credit risk. Market and credit risk are included in the determination of fair value.
Market risk is the potential loss that may result from movements in interest rates, foreign currency exchange rates or energy commodity prices that cause an unfavorable change in the value of a financial instrument. The Corporation manages this risk by establishing monetary exposure limits and monitoring compliance with those limits. Market risk inherent in interest rate and energy contracts entered into on behalf of customers is mitigated by taking offsetting positions, except in those circumstances when the amount, tenor and/or contract rate level results in negligible economic risk, whereby the cost of purchasing an offsetting contract is not economically justifiable. The Corporation mitigates most of the inherent market risk in foreign exchange contracts entered into on behalf of customers by taking offsetting positions and manages the remainder through individual foreign currency position limits and aggregate value-at-risk limits. These limits are established annually and positions are monitored quarterly.

F-71

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries


Market risk inherent in derivative instruments held or issued for risk management purposes is typically offset by changes in the fair value of the assets or liabilities being hedged.
Credit risk is the possible loss that may occur in the event of nonperformance by the counterparty to a financial instrument. The Corporation attempts to minimize credit risk arising from customer-initiated derivatives by evaluating the creditworthiness of each customer, adhering to the same credit approval process used for traditional lending activities and
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

obtaining collateral as deemed necessary. Derivatives with dealer counterparties are either cleared through a clearinghouse or settled directly with a single counterparty. For derivatives settled directly with dealer counterparties, the Corporation utilizes counterparty risk limits and monitoring procedures as well as master netting arrangements and bilateral collateral agreements to facilitate the management of credit risk. Master netting arrangements effectively reduce credit riskvaluation adjustments by permitting settlement of positive and negative positions and offset cash collateral held with the same counterparty on a net basis. Bilateral collateral agreements require daily exchange of cash or highly rated securities issued by the U.S. Treasury or other U.S. government entities to collateralize amounts due to either party. At December 31, 2018,2021, counterparties with bilateral collateral agreements had pledged $1 million of marketable investment securities and deposited $180$18 million of cash with the Corporation to secure the fair value of contracts in an unrealized gain position, and the Corporation had pledged $54 million of marketable investment securities and posted $2$494 million of cash as collateral for contracts in an unrealized loss position. For those counterparties not covered under bilateral collateral agreements, collateral is obtained, if deemed necessary, based on the results of management’s credit evaluation of the counterparty. Collateral varies, but may include cash, investment securities, accounts receivable, equipment or real estate. Included in the fair value of derivative instruments are credit valuation adjustments reflecting counterparty credit risk. These adjustments are determined by applying a credit spread for the counterparty or the Corporation, as appropriate, to the total expected exposure of the derivative. There were no derivative instruments with credit-risk-related contingent features that were in a liability position at December 31, 2018.
Derivative Instruments
Derivative instruments utilized by the Corporation are negotiated over-the-counter and primarily include swaps, caps and floors, forward contracts and options, each of which may relate to interest rates, energy commodity prices or foreign currency exchange rates. Swaps are agreements in which two parties periodically exchange cash payments based on specified indices applied to a specified notional amount until a stated maturity. Caps and floors are agreements which entitle the buyer to receive cash payments based on the difference between a specified reference rate or price and an agreed strike rate or price, applied to a specified notional amount until a stated maturity. Forward contracts are over-the-counter agreements to buy or sell an asset at a specified future date and price. Options are similar to forward contracts except the purchaser has the right, but not the obligation, to buy or sell the asset during a specified period or at a specified future date.
Over-the-counter contracts are tailored to meet the needs of the counterparties involved and, therefore, contain a greater degree of credit risk and liquidity risk than exchange-traded contracts, which have standardized terms and readily available price information. The Corporation reduces exposure to market and liquidity risks from over-the-counter derivative instruments entered into for risk management purposes, and transactions entered into to mitigate the market risk associated with customer-initiated transactions, by conducting hedging transactionstaking offsetting positions with investment grade domestic and foreign financial institutions and subjecting counterparties to credit approvals, limits and collateral monitoring procedures similar to those used in making other extensions of credit. In addition, certain derivative contracts executed bilaterally with a dealer counterparty in the over-the-counter market are cleared through a clearinghouse, whereby the clearinghouse becomes the counterparty to the transaction.


F-72

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries


The following table presents the composition of the Corporation’s derivative instruments held or issued for risk management purposes or in connection with customer-initiated and other activities at December 31, 20182021 and 2017.2020. The table excludes commitmentsa derivative related to the Corporation's 2008 sale of its remaining ownership of Visa shares.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and warrants accounted for as derivatives.Subsidiaries

December 31, 2018 December 31, 2017 December 31, 2021December 31, 2020
  Fair Value   Fair Value  Fair Value Fair Value
(in millions)
Notional/
Contract
Amount (a)
 Gross Derivative Assets Gross Derivative Liabilities 
Notional/
Contract
Amount (a)
 Gross Derivative Assets Gross Derivative Liabilities(in millions)Notional/
Contract
Amount (a)
Gross Derivative AssetsGross Derivative LiabilitiesNotional/
Contract
Amount (a)
Gross Derivative AssetsGross Derivative Liabilities
Risk management purposes           Risk management purposes
Derivatives designated as hedging instruments           Derivatives designated as hedging instruments
Interest rate contracts:           Interest rate contracts:
Swaps - fair value - receive fixed/pay floating$2,625
 $
 $2
 $1,775
 $
 $2
Fair value swaps - receive fixed/pay floatingFair value swaps - receive fixed/pay floating$2,650 $ $ $2,650 $— $— 
Cash flow swaps - receive fixed/
pay floating (b)
Cash flow swaps - receive fixed/
pay floating (b)
8,050   5,550 — — 
Derivatives used as economic hedges           Derivatives used as economic hedges
Foreign exchange contracts:           Foreign exchange contracts:
Spot, forwards and swaps302
 1
 1
 650
 
 2
Spot, forwards and swaps452  2 442 
Total risk management purposes2,927
 1
 3
 2,425
 
 4
Total risk management purposes11,152  2 8,642 
Customer-initiated and other activities           Customer-initiated and other activities
Interest rate contracts:           Interest rate contracts:
Caps and floors written885
 
 1
 635
 
 
Caps and floors written809  3 869 — — 
Caps and floors purchased885
 1
 
 635
 
 
Caps and floors purchased809 3  869 — — 
Swaps13,115
 66
 67
 13,119
 57
 57
Swaps19,382 236 66 19,783 531 61 
Total interest rate contracts14,885
 67
 68
 14,389
 57
 57
Total interest rate contracts21,000 239 69 21,521 531 61 
Energy contracts:           Energy contracts:
Caps and floors written278
 
 26
 164
 
 11
Caps and floors written1,779  203 503 33 
Caps and floors purchased278
 26
 
 164
 11
 
Caps and floors purchased1,779 204  503 33 
Swaps2,094
 163
 160
 1,519
 82
 80
Swaps4,212 466 459 2,115 117 115 
Total energy contracts2,650
 189
 186
 1,847
 93
 91
Total energy contracts7,770 670 662 3,121 151 149 
Foreign exchange contracts:           Foreign exchange contracts:
Spot, forwards, options and swaps1,095
 18
 12
 1,884
 42
 38
Spot, forwards, options and swaps1,716 19 14 1,901 17 15 
Total customer-initiated and other activities18,630
 274
 266
 18,120
 192
 186
Total customer-initiated and other activities30,486 928 745 26,543 699 225 
Total gross derivatives$21,557
 275
 269
 $20,545
 192
 190
Total gross derivatives$41,638 928 747 $35,185 700 229 
Amounts offset in the Consolidated Balance Sheets:           Amounts offset in the Consolidated Balance Sheets:
Netting adjustment - Offsetting derivative assets/liabilities  (45) (45)   (49) (49)Netting adjustment - Offsetting derivative assets/liabilities(187)(187)(83)(83)
Netting adjustment - Cash collateral received/posted  (174) (1)   (1) (39)Netting adjustment - Cash collateral received/posted(15)(452)(17)(48)
Net derivatives included in the Consolidated Balance Sheets (b)(c)
 56
 223
 


142
 102
726 108 600 98 
Amounts not offset in the Consolidated Balance Sheets:           Amounts not offset in the Consolidated Balance Sheets:
Marketable securities pledged under bilateral collateral agreements  (1) 
   (3) (24)Marketable securities pledged under bilateral collateral agreements (52)— (42)
Net derivatives after deducting amounts not offset in the Consolidated Balance Sheets

 $55
 $223
 

 $139
 $78
Net derivatives after deducting amounts not offset in the Consolidated Balance Sheets$726 $56 $600 $56 
(a)Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected in the Consolidated Balance Sheets.
(a)Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected on the Consolidated Balance Sheets.
(b)December 31, 2021 included $3.0 billion of forward starting swaps that will become effective on their contractual start dates in 2022 and 2023.
(c)Net derivative assets are included in accrued income and other assets and net derivative liabilities are included in accrued expenses and other liabilities on the Consolidated Balance Sheets. Included in the fair value of net derivative assets and net derivative liabilities are credit valuation adjustments reflecting counterparty credit risk and credit risk of the Corporation. The fair value of net derivative assets included credit valuation adjustments for counterparty credit risk of $2$9 million and $4$27 million at December 31, 20182021 and 2017,2020, respectively.
Risk Management
The Corporation's derivative instruments used for managing interest rate risk currently comprise swaps convertinginclude cash flow hedging strategies that convert variable-rate loans to fixed raterates and fair value hedging strategies that convert fixed-rate medium-and long-term debt to variable rates. Interest and fees on loans included $95 million and $70 million of cash flow hedge income for the years ended
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December 31, 2021 and 2020, respectively. There was no cash flow hedge income for the year ended December 31, 2019. Interest rate swap agreements with a notional amount of $500 million outstanding matured in 2021. In the fourth quarter of 2021, the Corporation entered into $3.0 billion of forward starting receive fixed interest rate swaps that will become effective on their contractual start dates in 2022 and 2023.
The following table details the effects of fair value hedging on the Consolidated Statements of Income.

(in millions)Interest on Medium- and Long-Term Debt
Years Ended December 31202120202019
Total interest on medium-and long-term debt (a)$35 $80 $197 
Fair value hedging relationships:
Interest rate contracts:
Hedged items102 109 110 
Derivatives designated as hedging instruments(68)(51)(4)

(a)Includes the effects of hedging.
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(in millions)Interest on Medium- and Long-Term Debt
Years Ended December 312018 2017
Total interest on medium-and long-term debt (a)$144
 $76
    
Fair value hedging relationships:   
Interest rate contracts:   
Hedged items74
 79
Derivatives designated as hedging instruments(7) (32)
(a)Includes the effects of hedging.
The following table summarizes the expected weighted average remaining maturity of the notional amount of risk management interest rate swaps, the carrying amount of the related hedged itemitems and the weighted average interest rates associated with amounts expected to be received or paid on interest rate swap agreements as of December 31, 20182021 and 2017.2020.
Cash flow swaps - receive fixed/pay floating rate on variable-rate loans
     Weighted Average
(dollar amounts in millions)
Derivative Notional
Amount
 Carrying Value of Hedged Items (a) 
Remaining
Maturity
(in years)
 Receive Rate Pay Rate (b)
December 31, 2018         
Swaps - fair value - receive fixed/pay floating rate         
Medium- and long-term debt designation$2,625
 $2,663
 3.9 3.40% 3.45%
December 31, 2017         
Swaps - fair value - receive fixed/pay floating rate         
Medium- and long-term debt designation1,775
 1,822
 4.6 3.26
 2.35
(dollar amounts in millions)December 31, 2021December 31, 2020
Weighted average:
   Time to maturity (in years)2.1 2.3 
   Receive rate (a)1.84 %1.87 %
   Pay rate (a), (b)0.10 0.15 
(a)
Included $49 million and $56 million of cumulative hedging adjustments at December 31, 2018 and 2017, respectively, which
included $8(a)December 31, 2021 excludes $3.0 billion of forward starting receive fixed swaps that will become effective on their contractual start dates in 2022 and 2023.
(b)Variable rates paid on receive fixed swaps designated as cash flow hedges are based on one-month LIBOR rates in effect at December 31, 2021 and 2020. Derivative contracts with maturity dates beyond the LIBOR cessation date will fall back to the daily Secured Overnight Financing Rate (SOFR) with a spread adjustment.
Fair value swaps - receive fixed/pay floating rate on medium- and long-term debt
(dollar amounts in millions)December 31, 2021December 31, 2020
Carrying value of hedged items (a)2,796 2,928 
Weighted average:
   Time to maturity (in years)3.6 4.6 
   Receive rate3.68 %3.68 %
   Pay rate (b)1.08 1.16 
(a)Included $145 million and $9$279 million of cumulative hedging adjustments at December 31, 2021 and 2020, respectively, which included $5 million and $6 million, respectively, of hedging adjustment on a discontinued hedging relationship.
(b)
Variable rates paid on receive fixed swaps are based on one- and six-month
(b)Floating rates paid on receive fixed swaps designated as fair value hedges are based on one-month LIBOR rates in effect at December 31, 2018 and six-month LIBOR rates in effect at December 31, 2017.
Foreign exchange rate risk arises from changes in effect at December 31, 2021 and 2020. Derivative contracts with maturity dates beyond the value of certain assets and liabilities denominated in foreign currencies. The Corporation employs spot and forward contracts in additionLIBOR cessation date will fall back to swap contracts to manage exposure to these and other risks. These instruments are used as economic hedges and net gains or losses are included in other noninterest income in the Consolidated Statements of Income.daily SOFR with a spread adjustment.
Customer-Initiated and Other
The Corporation enters into derivative transactions at the request of customers and generally takes offsetting positions with dealer counterparties to mitigate the inherent market risk. Income primarily results from the spread between the customer derivative and the offsetting dealer position.
For customer-initiated foreign exchange contracts where offsetting positions have not been taken, the Corporation manages the remaining inherent market risk through individual foreign currency position limits and aggregate value-at-risk limits. These limits are established annually and reviewed quarterly. For those customer-initiated derivative contracts which were not offset or where the Corporation holds a position within the limits described above, the Corporation recognized no0 net gains and losses in other noninterest income inon the Consolidated Statements of Income for the years endedending December 31, 2018 2021, 2020 and 2017,2019, respectively.
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Fair values of customer-initiated and other derivative instruments represent the net unrealized gains or losses on such contracts and are recorded inon the Consolidated Balance Sheets. Changes in fair value are recognized inon the Consolidated Statements of Income. The net gains recognized in income on customer-initiated derivative instruments, net of the impact of offsetting positions included in derivative income, were as follows:
(in millions)     
Years Ended December 31 Location of Gain2018 2017
Interest rate contracts Other noninterest income$26
 $24
Energy contracts Other noninterest income4
 2
Foreign exchange contracts Foreign exchange income47
 45
Total  $77
 $71


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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries


Years Ended December 31,
(in millions)202120202019
Interest rate contracts$36 $26 $27 
Energy contracts18 
Foreign exchange contracts45 40 44 
Total$99 $67 $76 
Credit-Related Financial Instruments
The Corporation issues off-balance sheet financial instruments in connection with commercial and consumer lending activities. The Corporation’s credit risk associated with these instruments is represented by the contractual amounts indicated in the following table.
(in millions)
December 3120212020
Unused commitments to extend credit:
Commercial and other$25,910 $23,443 
Bankcard, revolving check credit and home equity loan commitments3,554 3,297 
Total unused commitments to extend credit$29,464 $26,740 
Standby letters of credit$3,378 $3,273 
Commercial letters of credit44 30 
(in millions)   
December 312018 2017
Unused commitments to extend credit:   
Commercial and other$24,266
 $22,636
Bankcard, revolving check credit and home equity loan commitments3,001
 2,833
Total unused commitments to extend credit$27,267
 $25,469
Standby letters of credit$3,244
 $3,228
Commercial letters of credit39
 39
The Corporation maintains an allowance to cover probablecurrent expected credit losses inherent in lending-related commitments, including unused commitments to extend credit, letters of credit and financial guarantees. The allowance for credit losses on lending-related commitments, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, was $30$30 million and $42$44 million at December 31, 20182021 and 20172020, respectively.
Unused Commitments to Extend Credit
Commitments to extend credit are legally binding agreements to lend to a customer, provided there is no violation of any condition established in the contract. These commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many commitments expire without being drawn upon, the total contractual amount of commitments does not necessarily represent future cash requirements of the Corporation. Commercial and other unused commitments are primarily variable rate commitments. The allowance for credit losses on lending-related commitments included $24 million and $27 million and $37 million at December 31, 20182021 and 2017,2020, respectively, for probableexpected credit losses inherent in the Corporation’s unused commitments to extend credit.
Standby and Commercial Letters of Credit
Standby letters of credit represent conditional obligations of the Corporation which guarantee the performance of a customer to a third party. Standby letters of credit are primarily issued to support public and private borrowing arrangements, including commercial paper, bond financing and similar transactions. Commercial letters of credit are issued to finance foreign or domestic trade transactions. These contracts expire in decreasing amounts through the year 2028.2028. The Corporation may enter into participation arrangements with third parties that effectively reduce the maximum amount of future payments which may be required under standby and commercial letters of credit. These risk participations covered $136$98 million and $127$150 million at December 31, 20182021 and 2017,2020, respectively, of the $3.4 billion and $3.3 billion of standby and commercial letters of credit outstanding at both December 31, 20182021 and 2017.2020, respectively.
The carrying value of the Corporation’s standby and commercial letters of credit, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, totaled $34$32 million at December 31, 2018,2021, including $28$29 million in deferred fees and $6$3 million in the allowance for credit losses on lending-related commitments. At December 31, 2017,2020, the comparable amounts were $40$37 million,, $25 $30 million and $15$7 million,, respectively.
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The following table presents a summary of criticized standby and commercial letters of credit at December 31, 20182021 and December 31, 2017.2020. The Corporation's criticized list is consistent with the Special Mention, Substandard and Doubtful categories defined by regulatory authorities. The Corporation manages credit risk through underwriting, periodically reviewing and approving its credit exposures using Board committee approved credit policies and guidelines.
(dollar amounts in millions)December 31, 2018 December 31, 2017(dollar amounts in millions)December 31, 2021December 31, 2020
Total criticized standby and commercial letters of credit$49
 $88
Total criticized standby and commercial letters of credit$37 $73 
As a percentage of total outstanding standby and commercial letters of credit1.5% 2.7%As a percentage of total outstanding standby and commercial letters of credit1.1 %2.2 %
Other Credit-Related Financial Instruments
The Corporation enters into credit risk participation agreements, under which the Corporation assumes credit exposure associated with a borrower’s performance related to certain interest rate derivative contracts. The Corporation is not a party to the interest rate derivative contracts and only enters into these credit risk participation agreements in instances in which the Corporation is also a party to the related loan participation agreement for such borrowers. The Corporation manages its credit risk on the credit risk participation agreements by monitoring the creditworthiness of the borrowers, which is based on the normal credit review process as if the Corporation had it entered into the derivative instruments directly with the borrower. The notional amount of such credit risk participation


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agreement agreements reflects the pro-rata share of the derivative instrument, consistent with its share of the related participated loan. As of December 31, 2018 and 2017, theThe total notional amount of the credit risk participation agreements was approximately $703 million$1.1 billion at both December 31, 2021 and $549 million, respectively,2020, and the fair value was insignificant for both periods.$1 million at December 31, 2021 and $3 million at December 31, 2020, respectively. The maximum estimated exposure to these agreements, as measured by projecting a maximum value of the guaranteed derivative instruments, assuming 100 percent default by all obligors on the maximum values, was $7$30 million and insignificant$62 million at December 31, 20182021 and 2017,2020, respectively. In the event of default, the lead bank has the ability to liquidate the assets of the borrower, in which case the lead bank would be required to return a percentage of the recouped assets to the participating banks. As of December 31, 2018,2021, the weighted average remaining maturity of outstanding credit risk participation agreements was 3.54.2 years.
In 2008, the Corporation sold its remaining ownership of Visa Class B shares and entered into a derivative contract. Under the terms of the derivative contract, the Corporation will compensate the counterparty primarily for dilutive adjustments made to the conversion factor of the Visa Class B shares to Class A shares based on the ultimate outcome of litigation involving Visa. Conversely, the Corporation will be compensated by the counterparty for any increase in the conversion factor from anti-dilutive adjustments. The notional amount of the derivative contract was equivalent to approximately 780,000 Visa Class B Shares. The fair value of the derivative liability, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, was $13 million and $11 million at December 31, 2021 and 2020, respectively.
NOTE 9 - VARIABLE INTEREST ENTITIES (VIEs)
The Corporation evaluates its interest in certain entities to determine if these entities meet the definition of a VIE and whether the Corporation is the primary beneficiary and should consolidate the entity based on the variable interests it held both at inception and when there is a change in circumstances that requires a reconsideration.
The Corporation holds ownership interests in funds in the form of limited partnerships or limited liability companies (LLCs) investing in affordable housing projects that qualify for the low-income housing tax credit (LIHTC). The Corporation also directly invests in limited partnerships and LLCs which invest in community development and other projects, which generate similar tax credits to investors (other tax credit entities). As an investor, the Corporation obtains income tax credits and deductions from the operating losses of these tax credit entities. These tax credit entities meet the definition of a VIE; however, the Corporation is not the primary beneficiary of the entities, as the general partner or the managing member has both the power to direct the activities that most significantly impact the economic performance of the entities and the obligation to absorb losses or the right to receive benefits that could be significant to the entities.
The Corporation accounts for its interests in LIHTC entities using the proportional amortization method. Exposure to loss as a result of the Corporation’s involvement with LIHTC entities at December 31, 2018 was limited to $425 million. Ownership interests in other tax credit entities are accounted for under either the cost or equity method. Exposure to loss as a result of the Corporation'sCorporation’s involvement in LIHTC entities and other tax credit entities at December 31, 20182021 was limited to $6 million.$451 million and $20 million, respectively.
Investment balances, including all legally binding commitments to fund future investments, are included in accrued income and other assets on the Consolidated Balance Sheets. A liability is recognized in accrued expenses and other liabilities on the Consolidated Balance Sheets for all legally binding unfunded commitments to fund tax credit entities ($165169 million at December 31, 2018)2021). Amortization and other write-downs of LIHTC investments are presented on a net basis as a component of the provision for income taxes on the Consolidated Statements of Income, while amortization and write-downs of other tax
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credit investments are recorded in other noninterest income. The income tax credits and deductions are recorded as a reduction of income tax expense and a reduction of federal income taxes payable.
The Corporation provided no financial or other support that was not contractually required to any of the above VIEs during the years ended December 31, 2018, 20172021, 2020 and 2016.2019.
The following table summarizes the impact of these tax credit entities on line items on the Corporation’s Consolidated Statements of Income.
(in millions) (in millions)
Years Ended December 312018 2017 2016Years Ended December 31202120202019
Other noninterest income:     Other noninterest income:
Sales (amortization) of other tax credit investments$5
 $2
 $(1)
Amortization of other tax credit investmentsAmortization of other tax credit investments$1 $$
Provision for income taxes:     Provision for income taxes:
Amortization of LIHTC Investments65
 67
 66
Amortization of LIHTC Investments71 $67 65 
Low income housing tax credits(62) (63) (62)Low income housing tax credits(68)(63)(62)
Other tax benefits related to tax credit entities(14) (24) (26)Other tax benefits related to tax credit entities(17)(16)(13)
Total provision for income taxes$(11) $(20) $(22)Total provision for income taxes$(14)$(12)$(10)
For further information on the Corporation’s consolidation policy, see Note 1.


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NOTE 10 - DEPOSITS
At December 31, 2018,2021, the scheduled maturities of certificates of deposit and other deposits with a stated maturity were as follows:
(in millions) (in millions) 
Years Ending December 31
  
Years Ending December 31
  
2019$1,614
2020434
202138
202217
2022$1,837 
202311
2023115 
2024202420 
2025202520 
2026202618 
Thereafter25
Thereafter13 
Total$2,139
Total$2,023 
A maturity distribution of domestic certificates of deposit of $100,000 and over follows:
(in millions)  
December 3120212020
Three months or less$436 $366 
Over three months to six months314 246 
Over six months to twelve months319 387 
Over twelve months74 205 
Total$1,143 $1,204 
(in millions)   
December 312018 2017
Three months or less$363
 $355
Over three months to six months146
 207
Over six months to twelve months278
 319
Over twelve months297
 130
Total$1,084
 $1,011
The aggregate amount of domestic certificates of deposit that meet or exceed the current FDIC insurance limit of $250,000 was $543$627 million and $462$632 million at December 31, 20182021 and 2017,2020, respectively. All foreign office time deposits of $8 million and $15 million at December 31, 2018 and 2017, respectively, were in denominations of $250,000 or more.more and totaled $50 million and $66 million at December 31, 2021 and 2020, respectively.
NOTE 11 - SHORT-TERM BORROWINGS
Federal funds purchased and securities sold under agreements to repurchase generally mature within one to four days from the transaction date. Other short-term borrowings, which may consist of borrowed securities and short-term notes, generally mature within one to 120 days from the transaction date.
At December 31, 2018,2021, Comerica Bank (the Bank), a wholly-owned subsidiary of the Corporation, had pledged loans totaling $22.8$21.2 billion which provided for up to $18.9$17.0 billion of available collateralized borrowing with the FRB.

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The following table provides a summary of short-term borrowings.
(dollar amounts in millions)Federal Funds Purchased
and Securities Sold Under
Agreements to Repurchase
Other
Short-term
Borrowings
December 31, 2021
Amount outstanding at year-end$ $ 
Weighted average interest rate at year-end % %
Maximum month-end balance during the year$2 $ 
Average balance outstanding during the year2  
Weighted average interest rate during the year0.06 % %
December 31, 2020
Amount outstanding at year-end$— $— 
Weighted average interest rate at year-end— %— %
Maximum month-end balance during the year$1,513 $1,250 
Average balance outstanding during the year30 284 
Weighted average interest rate during the year0.97 %0.25 %
December 31, 2019
Amount outstanding at year-end$71 $— 
Weighted average interest rate at year-end1.50 %— %
Maximum month-end balance during the year$835 $1,200 
Average balance outstanding during the year113 256 
Weighted average interest rate during the year2.28 %2.44 %
(dollar amounts in millions)
Federal Funds Purchased
and Securities Sold Under
Agreements to Repurchase
 
Other
Short-term
Borrowings
December 31, 2018   
Amount outstanding at year-end$44
 $
Weighted average interest rate at year-end2.39% %
Maximum month-end balance during the year$182
 $250
Average balance outstanding during the year59
 3
Weighted average interest rate during the year1.91% 1.75%
December 31, 2017   
Amount outstanding at year-end$10
 $
Weighted average interest rate at year-end1.43% %
Maximum month-end balance during the year$41
 $1,024
Average balance outstanding during the year20
 257
Weighted average interest rate during the year1.02% 1.15%
December 31, 2016   
Amount outstanding at year-end$25
 $
Weighted average interest rate at year-end0.54% %
Maximum month-end balance during the year$25
 $501
Average balance outstanding during the year15
 123
Weighted average interest rate during the year0.47% 0.45%
NOTE 12 - MEDIUM- AND LONG-TERM DEBT
Medium- and long-term debt is summarized as follows:
(in millions)
December 3120212020
Parent company
Subordinated notes:
3.80% subordinated notes due 2026 (a)$265 $280 
Medium- and long-term notes:
3.70% notes due 2023 (a)877 905 
4.00% notes due 2029 (a)594 633 
Total medium- and long-term notes1,471 1,538 
Total parent company1,736 1,818 
Subsidiaries
Subordinated notes:
4.00% subordinated notes due 2025 (a)363 380 
7.875% subordinated notes due 2026 (a)190 207 
Total subordinated notes553 587 
Medium- and long-term notes:
2.50% notes due 2024 (a)507 523 
Total medium- and long-term notes507 523 
Federal Home Loan Bank (FHLB) advances:
Floating-rate based on FHLB auction rate due 2026 2,800 
Total FHLB advances 2,800 
Total subsidiaries1,060 3,910 
Total medium- and long-term debt$2,796 $5,728 
(in millions)   
December 312018 2017
Parent company   
Subordinated notes:   
3.80% subordinated notes due 2026 (a)$250
 $255
Medium-term notes:
  
2.125% notes due 2019 (a)348
 347
3.70% notes due 2023 (a)861
 
Total medium-term notes1,209
 347
Total parent company1,459
 602
Subsidiaries   
Subordinated notes:   
4.00% subordinated notes due 2025 (a)343
 347
7.875% subordinated notes due 2026 (a)198
 208
Total subordinated notes541
 555
Medium-term notes:   
2.50% notes due 2020 (a)663
 665
FHLB advances:   
Floating-rate based on FHLB auction rate due 20262,800
 2,800
Floating-rate based on FHLB auction rate due 20281,000
 
Total FHLB advances3,800
 2,800
Total subsidiaries5,004
 4,020
Total medium- and long-term debt$6,463
 $4,622
(a)The fixed interest rates on these notes have been swapped to a variable rate and designated in a hedging relationship. Accordingly, carrying value has been adjusted to reflect the change in the fair value of the debt as a result of changes in the benchmark rate.
(a)
The fixed interest rates on these notes have been swapped to a variable rate and designated in a hedging relationship. Accordingly, carrying value has been adjusted to reflect the change in the fair value of the debt as a result of changes in the benchmark rate.
Subordinated notes with remaining maturities greater than one year qualify as Tier 2 capital.
The Bank, a wholly-owned subsidiary of the Corporation, is a member of the FHLB, which provides short- and long-term funding to its members through advances collateralized by real-estate relatedreal estate-related assets. In the first quarter 2018, the Bank borrowed an additional $1 billion of 10-year, floating-rateThe interest rates on FHLB advances due January 26, 2028. The interest rate on the FHLB advances resetsreset between four and eight weeks, based

on the FHLB auction rate. Each note may be prepaid in full, without penalty, at each
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Comerica Incorporated and Subsidiaries



on the FHLB auction rate. Atscheduled reset date. The Bank held no outstanding long-term advances at December 31, 2018, the weighted-average rate on the2021. FHLB advances was 2.55%. Each note may be prepaidoutstanding at December 31, 2020 were paid in full without penalty, at each scheduled reset date.in the first quarter of 2021. Borrowing capacity is contingent uponon the amount of collateral available to be pledged to the FHLB. At December 31, 2018, $15.72021, $18.3 billion of real estate-related loans were pledged to the FHLB as blanket collateral providing $10.2 billion for current and potential future borrowings of approximately $5.0 billion.
In the third quarter 2018, the Corporation issued $850 million of 3.70% senior notes maturing in 2023, swapped to a floating rate at 30-day LIBOR plus 80 basis points.borrowings.
Unamortized debt issuance costs deducted from the carrying amount of medium- and long-term debt totaled $8$7 million and $5$10 million at December 31, 20182021 and 2017,2020, respectively.
At December 31, 2018,2021, the principal maturities of medium- and long-term debt were as follows:
(in millions) 
Years Ending December 31
  
2022$ 
2023850 
2024500 
2025350 
2026400 
Thereafter550 
Total$2,650 
(in millions) 
Years Ending December 31
  
2019$350
2020675
2021
2022
2023850
Thereafter4,550
Total$6,425
NOTE 13 - SHAREHOLDERS’ EQUITY
On July 6, 2018,In March 2020, as the Board of Governors ofeconomic climate grew increasingly uncertain, the Federal Reserve System issued a statement announcing that, consistent with the recently enacted Economic Growth, Regulatory Relief and Consumer Protection Act (EGRRCPA), bank holding companies with less than $100 billion in total assets are no longer subject to certain regulations and reporting requirements, such as Dodd-Frank Act stress testing and the Comprehensive Capital Analysis and Review, effective immediately.
Repurchases of common stock under the equityCorporation temporarily suspended its share repurchase program, initially authorized in 2010 by the Board of Directors of the Corporation, with a focus on deploying capital to meet customers' growing financial requirements. In the second quarter 2021, share repurchases were resumed under the share repurchase program, including an Accelerated Share Repurchase transaction (ASR). On April 27, 2021, the Corporation's Board of Directors approved the authorization to repurchase up to an additional 10 million shares of its outstanding common stock, including the ASR.
Repurchases of common stock under the share repurchase program totaled 14.89.5 million shares at an average price paid of $89.21$75.82 in 2018, 7.32021, 3.2 million shares at an average price paid of $72.44$58.55 per share in 20172020 and 6.618.6 million shares at an average price paid of $46.09$73.60 per share in 2016.2019. There is no expiration date for the Corporation's equityshare repurchase program. During the year ended December 31, 2018,2021, the Corporation repurchased $1.3 billion$720 million under the equityshare repurchase program.
At December 31, 2018,2021, the Corporation had no outstanding warrants as all remaining warrants to purchase common stock expired during the fourth quarter of 2018. Approximately 585,000, 1.8 million and 2.3 million shares of common stock were issued upon exercise of warrants in 2018, 2017 and 2016, respectively.
At December 31, 2018, the Corporation had 4.04.4 million shares of common stock reserved for stock option exercises and restricted stock unit vesting and 869,00041,000 shares of restricted stock outstanding to employees and directors under share-based compensation plans.

In May 2020, the Corporation issued and sold 400,000 depositary shares, each representing a 1/100th ownership interest in a share of 5.625% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series A, without par value, with a liquidation preference of $100,000 per share (equivalent of 1,000 per depositary share). Holders of the depositary shares will be entitled to all proportional rights and preferences of the Series A preferred stock (including dividend, voting, redemption and liquidation rights). The $400 million issuance yielded $394 million in proceeds net of underwriting discounts and offering expenses. Dividends on the Series A preferred stock accrue on a non-cumulative basis and are payable in arrears when, as and if authorized by the Corporation’s Board of Directors or a duly authorized committee of the Board and declared by the Corporation, on the first day of January, April, July and October of each year, and commenced on October 1, 2020. Under the terms of the Series A preferred stock, the ability of the Corporation to pay dividends on, make distributions with respect to, or to repurchase, redeem or acquire its common stock or any other stock ranking on parity with or junior to the Series A preferred stock, is subject to restrictions in the event that the Corporation does not declare and either pay or set aside a sum sufficient for payment of dividends on the Series A preferred stock for the immediately preceding dividend period. The Series A preferred stock is perpetual and has no maturity date, but is redeemable by the Corporation at specified times subject to regulatory considerations.
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NOTE 14 - ACCUMULATED OTHER COMPREHENSIVE LOSS(LOSS)INCOME
The following table presents a reconciliation of the changes in the components of accumulated other comprehensive loss(loss) income and details the components of other comprehensive (loss) income (loss) for the yearyears ended December 31, 2018, 20172021, 2020 and 2016,2019, including the amount of income tax expense (benefit) allocated to each component of other comprehensive income (loss). income.
(in millions)
Years Ended December 31202120202019
Accumulated net unrealized (losses) gains on investment securities:
Balance at beginning of period, net of tax$211 $65 $(138)
Net unrealized holding (losses) gains arising during the period(406)191 257 
Less: (Benefit) provision for income taxes(96)45 60 
Net unrealized holding (losses) gains arising during the period, net of tax(310)146 197 
Less:
Net realized losses included in net securities losses — (8)
Less: Benefit for income taxes — (2)
Reclassification adjustment for net securities losses included in net income, net of tax — (6)
Change in net unrealized (losses) gains on investment securities, net of tax(310)146 203 
Balance at end of period, net of tax$(99)$211 $65 
Accumulated net gains on cash flow hedges:
Balance at beginning of period, net of tax$155 $34 $— 
Net cash flow hedge (losses) gains arising during the period(35)229 44 
Less: (Benefit) provision for income taxes(8)56 10 
Change in net cash flow hedge gains arising during the period, net of tax(27)173 34 
Less:
Net cash flow hedge gains included in interest and fees on loans95 70 — 
Less: Provision for income taxes22 18 — 
Reclassification adjustment for net cash flow hedge gains included in net income, net of tax73 52 — 
Change in net cash flow hedge gains, net of tax(100)121 34 
Balance at end of period, net of tax (a)$55 $155 $34 
Accumulated defined benefit pension and other postretirement plans adjustment:
Balance at beginning of period, net of tax (b)$(302)$(415)$(548)
Actuarial gain arising during the period (b)159 128 157 
Prior service credit arising during the period1 — — 
Net defined benefit pension and other postretirement plans adjustment arising during the period160 128 157 
Less: Provision for income taxes (b)38 31 36 
Net defined benefit pension and other postretirement plans adjustment arising during the period, net of tax (b)122 97 121 
Amounts recognized in other noninterest expenses:
Amortization of actuarial net loss (b)40 47 42 
Amortization of prior service credit(25)(27)(27)
Total amounts recognized in other noninterest expenses (b)15 20 15 
Less: Provision for income taxes (b)3 
Adjustment for amounts recognized as components of net periodic benefit cost during the period, net of tax (b)12 16 12 
Change in defined benefit pension and other postretirement plans adjustment, net of tax (b)134 113 133 
Balance at end of period, net of tax (b)$(168)$(302)$(415)
Total accumulated other comprehensive (loss) income at end of period, net of tax$(212)$64 $(316)
(a)The Corporation expects to reclassify $47 million of net gains, net of tax, from accumulated other comprehensive loss to earnings over the next twelve months if interest yield curves and notional amounts remain at December 31, 2021 levels.
(b)Balances at beginning and end of period, net of tax, and changes for the years ended December 31, 2020 and 2019 have been recast to reflect the retrospective application of the Corporation's election to change the accounting method for certain components of the qualified defined benefit pension plan as of January 1, 2021. Refer to Note 1 for further information.
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(in millions)     
Years Ended December 312018 2017 2016
Accumulated net unrealized (losses) gains on investment securities:     
Balance at beginning of period, net of tax$(101) $(33) $9
      
Cumulative effect of change in accounting principle1
 
 
Net unrealized holding losses arising during the period(69) (81) (70)
Less: Benefit for income taxes(16) (27) (26)
Net unrealized holding losses arising during the period, net of tax(53)
(54)
(44)
Less:     
Net realized losses included in net securities losses(20) 
 
Less: Benefit for income taxes(5) 
 
Reclassification adjustment for net securities losses included in net income, net of tax(15) 
 
Less:     
Net losses realized as a yield adjustment in interest on investment securities
 (3) (3)
Less: Benefit for income taxes
 (1) (1)
Reclassification adjustment for net losses realized as a yield adjustment included in net income, net of tax
 (2) (2)
Change in net unrealized losses on investment securities, net of tax(38) (52) (42)
Reclassification of certain deferred tax effects (a)
 (16) 
Balance at end of period, net of tax$(138) $(101) $(33)
      
Accumulated defined benefit pension and other postretirement plans adjustment:     
Balance at beginning of period, net of tax$(350) $(350) $(438)
      
Actuarial (loss) gain arising during the period(191) 72
 (134)
Prior service credit arising during the period
 
 234
Net defined benefit pension and other postretirement adjustment arising during the period(191) 72
 100
Less: (Benefit) provision for income taxes(44) 17
 37
Net defined benefit pension and other postretirement adjustment arising during the period, net of tax(147)
55

63
Amounts recognized in other noninterest expense:     
Amortization of actuarial net loss61
 51
 46
Amortization of prior service credit(27) (27) (7)
Total amounts recognized in other noninterest expense34
 24
 39
Less: Provision for income taxes8
 8
 14
Adjustment for amounts recognized as other components of net benefit cost during the period, net of tax26
 16
 25
Change in defined benefit pension and other postretirement plans adjustment, net of tax(121) 71
 88
Reclassification of certain deferred tax effects (a)


 (71) 
Balance at end of period, net of tax$(471) $(350) $(350)
Total accumulated other comprehensive loss at end of period, net of tax$(609) $(451) $(383)
(a)Amounts reclassified to retained earnings due to early adoption of ASU 2018-02. For further information, refer to Note 1.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 15 - NET INCOME PER COMMON SHARE
Basic and diluted net income per common share are presented in the following table.
(in millions, except per share data)
Years Ended December 31202120202019
Basic and diluted
Net income$1,168 $497 $1,202 
Less:
Income allocated to participating securities5 
Preferred stock dividends23 13 — 
Net income attributable to common shares$1,140 $482 $1,195 
Basic average common shares135 139 150 
Basic net income per common share$8.45 $3.45 $7.98 
Basic average common shares135 139 150 
Dilutive common stock equivalents:
Net effect of the assumed exercise of stock awards2 
Diluted average common shares137 140 151 
Diluted net income per common share$8.35 $3.43 $7.90 
(in millions, except per share data)     
Years Ended December 312018 2017 2016
Basic and diluted     
Net income$1,235
 $743
 $477
Less: Income allocated to participating securities8
 5
 4
Net income attributable to common shares$1,227
 $738
 $473
      
Basic average common shares168
 174
 172
      
Basic net income per common share$7.31
 $4.23
 $2.74
      
Basic average common shares168
 174
 172
Dilutive common stock equivalents:     
Net effect of the assumed exercise of stock options2
 3
 2
Net effect of the assumed exercise of warrants1
 1
 3
Diluted average common shares171
 178
 177
      
Diluted net income per common share$7.20
 $4.14
 $2.68
Declared dividends on preferred stock are excluded from net income attributable to common shares. Refer to Note 13 for further information on preferred stock.
The following average shares related to outstanding options to purchase shares of common stock were not included in the computation of diluted net income per common share because the options were anti-dilutive for the period. There were no anti-dilutive options for the year ended December 31, 2017.
(average outstanding options in thousands)
Years Ended December 31202120202019
Average outstanding options4381,498543
Range of exercise prices$79.01 - $95.25$49.20 - $95.25$67.53 - $95.25
(shares in millions)   
Years Ended December 312018 2016
Average outstanding options0.2 3.3
Range of exercise prices$95.25 $37.26 - $59.86

NOTE 16 - SHARE-BASED COMPENSATION
Share-based compensation expense is charged to salaries and benefits expense on the Consolidated Statements of Income. The components of share-based compensation expense for all share-based compensation plans and related tax benefits are as follows:
(in millions)     (in millions)
Years Ended December 312018 2017 2016Years Ended December 31202120202019
Total share-based compensation expense$48
 $39
 $34
Total share-based compensation expense$41 $24 $39 
Related tax benefits recognized in net income$11
 $14
 $13
Related tax benefits recognized in net income$10 $$
The following table summarizes unrecognized compensation expense for all share-based plans.
(dollar amounts in millions)December 31, 2021
Total unrecognized share-based compensation expense$37
Weighted-average expected recognition period (in years)2.2
(dollar amounts in millions)December 31, 2018
Total unrecognized share-based compensation expense$40
Weighted-average expected recognition period (in years)2.5
The Corporation has share-based compensation plans under which it awards shares of restricted stock units to executive officers, directors and key personnel and stock options to executive officers and key personnel of the Corporation and its subsidiaries. Additionally, the Corporation has awarded restricted stock and restricted stock units to executive officers directors and key personnel under a previous share-based compensation plansplan that remain unvested. Restricted stock and restricted stock units fully vest after a period ranging from three years to five years, and stock options fully vest after four years. A majority of share-based compensation awards include a retirement eligibility clause where qualified employees are exempt from the service requirements of the award. This generally results in the recognition of compensation expense at the grant date for retirement eligible employees. The maturity of each option is determined at the date of grant; however, no options may be exercised later
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than ten years from the date of grant. The options may have restrictions regarding exercisability. The plans provide for a grant of up to 6.17.7 million common shares, plus shares under certain plans that are forfeited, expire or are canceled, which become available for re-grant. At December 31, 2018,2021, over 64.8 million shares were available for grant.

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Comerica Incorporated and Subsidiaries


The Corporation used a binomial model to value stock options granted in the periods presented. Option valuation models require several inputs, including the expected stock price volatility, and changes in input assumptions can materially affect the fair value estimates. The model used may not necessarily provide a reliable single measure of the fair value of stock options. The risk-free interest rate assumption used in the binomial option-pricing model as outlined in the table below was based on the federal ten-year treasury interest rate. The expected dividend yield was based on the historical and projected long-term dividend yield patterns of the Corporation’s common shares. Expected volatility assumptions considered both the historical volatility of the Corporation’s common stock over a ten-year period and implied volatility based on actively traded options on the Corporation’s common stock with pricing terms and trade dates similar to the stock options granted. Expected option life was based on historical exercise activity over the contractual term of the option grant (10(ten years), excluding certain forced transactions.
The estimated weighted-average grant-date fair value per option and the underlying binomial option-pricing model assumptions are summarized in the following table:
Years Ended December 31202120202019
Weighted-average grant-date fair value per option$18.36 $13.03 $22.27 
Weighted-average assumptions:
Risk-free interest rates1.05 %1.65 %2.74 %
Expected dividend yield4.00 4.14 3.00 
Volatility39 27 30 
Expected option life (in years)7.8 8.4 7.6 
Years Ended December 312018 2017 2016
Weighted-average grant-date fair value per option$30.32
 $19.61
 $9.94
Weighted-average assumptions:     
 Risk-free interest rates2.63% 2.47% 2.01%
 Expected dividend yield3.00
 3.00
 3.00
Expected volatility factors of the market price of
   Comerica common stock
36
 34
 38
Expected option life (in years)7.4
 7.0
 6.9
A summary of the Corporation’s stock option activity and related information for the year ended December 31, 20182021 follows:
  Weighted-Average 
  Number of
Options
(in thousands)
Exercise Price
per Share
Remaining
Contractual
Term (in years)
Aggregate
Intrinsic Value
(in millions)
Outstanding-January 1, 20212,879 $52.81 
Granted233 60.20 
Forfeited or expired(33)69.42 
Exercised(835)41.60 
Outstanding-December 31, 20212,244 57.50 5.5 $68 
Exercisable-December 31, 20211,487 $53.02 4.2 $52 
   Weighted-Average  
  
Number of
Options
(in thousands)
 
Exercise Price
per Share
 
Remaining
Contractual
Term (in years)
 
Aggregate
Intrinsic Value
(in millions)
Outstanding-January 1, 20184,173
 $40.06
    
Granted196
 95.25
    
Forfeited or expired(24) 49.75
    
Exercised(1,402) 37.86
    
Outstanding-December 31, 20182,943
 44.70
 5.6
 $76
Exercisable-December 31, 20181,707
 $38.62
 4.3
 $51
The aggregate intrinsic value of outstanding options shown in the table above represents the total pretax intrinsic value at December 31, 2018,2021, based on the Corporation’s closing stock price of $68.69$87.00 at December 31, 2018.2021.
The total intrinsic value of stock options exercised was $81$29 million, $104$6 million and $46$20 million for the years ended December 31, 2018, 20172021, 2020 and 2016,2019, respectively.
A summary of the Corporation’s restricted stock activity and related information for the year ended December 31, 20182021 follows:
Number of
Shares
(in thousands)
Weighted-Average
Grant-Date Fair 
Value per Share
Outstanding-January 1, 202117648.85 
Forfeited(4)67.87 
Vested(131)44.38 
Outstanding-December 31, 202141 $61.64 
 
Number of
Shares
(in thousands)
 
Weighted-Average
Grant-Date Fair 
Value per Share
Outstanding-January 1, 20181,243
 $43.59
Forfeited(44) 44.05
Vested(330) 41.55
Outstanding-December 31, 2018869
 $44.34
The total fair value of restricted stock awards that fully vested was $14$8 million, $19$17 million and $22$31 million for the years ended December 31, 2018, 20172021, 2020 and 2016,2019, respectively.
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A summary of the Corporation's restricted stock unit activity and related information for the year ended December 31, 20182021 follows:

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Service-Based UnitsPerformance-Based Units
Service-Based Units Performance-Based UnitsNumber of
Units
(in thousands)
Weighted-Average
Grant-Date Fair 
Value per Share
Number of
Units
(in thousands)
Weighted-Average
Grant-Date Fair 
Value per Share
Outstanding-January 1, 2021Outstanding-January 1, 20211,048 $61.52 690 $73.48 
GrantedGranted456 60.92 332 58.64 
Number of
Units
(in thousands)
 
Weighted-Average
Grant-Date Fair 
Value per Share
 
Number of
Units
(in thousands)
 
Weighted-Average
Grant-Date Fair 
Value per Share
Outstanding-January 1, 2018199
 $43.00
 718
 $42.39
Granted194
 96.55
 184
 92.80
Forfeited(26) 86.54
 (1) 93.26
Forfeited(41)62.09 (17)64.38 
Vested
 
 (239) 41.59
Vested(117)86.13 (189)93.02 
Outstanding-December 31, 2018367
 68.14
 662
 56.64
Outstanding-December 31, 2021Outstanding-December 31, 20211,346 59.18 816 63.12 
The total fair value of restricted stock units that fully vested was $10$21 million, $10$12 million and $11$37 million for the years ended December 31, 2018, 20172021, 2020 and 2016,2019, respectively.
The Corporation expects to satisfy the exercise of stock options, the vesting of restricted stock units and future grants of restricted stock by issuing shares of common stock out of treasury. At December 31, 2018,2021, the Corporation held 68.197 million shares in treasury.
For further information on the Corporation’s share-based compensation plans, refer to Note 1.
NOTE 17 - EMPLOYEE BENEFIT PLANS
Defined Benefit Pension and Postretirement Benefit Plans
The Corporation has a qualified and non-qualified defined benefit pension plan. Prior to January 1, 2017, the plans were in effect for substantially all salaried employees hired before January 1, 2007. In October 2016, the Corporation modified its defined benefit pension plans to freeze final average pay benefits as of December 31, 2016, other than for participants who were age 60 or older as of December 31, 2016, and added a cash balance plan provision effective January 1, 2017. Active pension plan participants 60 years or older as of December 31, 2016 receive the greater of the final average pay formula or the frozen final average pay benefit as of December 31, 2016 plus the cash balance benefit earned after January 1, 2017. Employees participating in the retirement account plan as of December 31, 2016 were eligible to participate in the cash balance pension plan effective January 1, 2017. Benefits earned under the cash balance pension formula, in the form of an account balance, include contribution credits based on eligible pay earned each month, age and years of service and monthly interest credits based on the 30-year Treasury rate.
The Corporation’s postretirement benefit plan provides postretirement health care and life insurance benefits for retirees as of December 31, 1992. The plan also provides certain postretirement health care and life insurance benefits for a limited number of retirees who retired prior to January 1, 2000. For all other employees hired prior to January 1, 2000, a nominal benefit is provided. Employees hired on or after January 1, 2000 and prior to January 1, 2007 are eligible to participate in the plan on a full contributory basis until Medicare-eligible based on age and service. Employees hired on or after January 1, 2007 are not eligible to participate in the plan. The Corporation funds the pre-1992 retiree plan benefits with bank-owned life insurance.

Effective January 1, 2022, the plan will move from the current self-insured plan to the Medicare and pre-65 individual marketplace with a funded Health Reimbursement Arrangement account for those with subsidized coverage. This change did not have a material impact on the Corporation's consolidated financial condition, results of operations or cash flows.
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The following table sets forth reconciliations of plan assets and the projected benefit obligation, the weighted-average assumptions used to determine year-end benefit obligations, and the amounts recognized in accumulated other comprehensive (loss) income (loss) for the Corporation’s defined benefit pension plans and postretirement benefit plan at December 31, 20182021 and 2017.2020. The Corporation used a measurement date of December 31, 20182021 for these plans.
Defined Benefit Pension Plans
QualifiedNon-QualifiedPostretirement Benefit Plan
(dollar amounts in millions)202120202021202020212020
Change in fair value of plan assets:
Fair value of plan assets at January 1$3,350 $2,933 $ $— $57 $57 
Actual return on plan assets291 537  — (1)
Plan participants' contributions —  — 1 
Benefits paid(179)(120) — (4)(4)
Fair value of plan assets at December 31$3,462 $3,350 $ $— $53 $57 
Change in projected benefit obligation:
Projected benefit obligation at January 1$2,327 $2,131 $252 $235 $35 $48 
Service cost38 32 2  — 
Interest cost61 70 7 1 
Actuarial (gain) loss(69)214 (3)22 (1)(11)
Plan participants' contributions —  — 1 
Benefits paid(179)(120)(15)(14)(4)(4)
Plan amendments (a)36 — (36)— (1)— 
Projected benefit obligation at December 31$2,214 $2,327 $207 $252 $31 $35 
Accumulated benefit obligation$2,199 $2,312 $204 $251 $31 $35 
Funded status at December 31 (b) (c)$1,248 $1,023 $(207)$(252)$22 $22 
Weighted-average assumptions used:
Discount rate2.96 %2.71 %2.96 %2.71 %2.79 %2.43 %
Rate of compensation increase4.00 4.00 4.00 4.00 n/an/a
Interest crediting rate3.79 - 5.003.79 - 5.003.79 - 5.003.79 - 5.00n/an/a
Healthcare cost trend rate:
Cost trend rate assumed for next yearn/an/an/an/an/a6.00 
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)n/an/an/an/an/a4.50 
Year when rate reaches the ultimate trend raten/an/an/an/an/a2027
Amounts recognized in accumulated other comprehensive (loss) income before income taxes:
Net actuarial loss (d)$(205)$(392)$(92)$(106)$(11)$(9)
Prior service credit (d)48 103 47 17 2 
Balance at December 31 (d)$(157)$(289)$(45)$(89)$(9)$(8)
 Defined Benefit Pension Plans    
 Qualified Non-Qualified Postretirement Benefit Plan
(dollar amounts in millions)2018 2017 2018 2017 2018 2017
Change in fair value of plan assets:           
Fair value of plan assets at January 1$2,747
 $2,453
 $
 $
 $60
 $62
Actual return on plan assets(167) 396
 
 
 (1) 2
Employer contributions
 
 
 
 1
 1
Benefits paid(122) (102) 
 
 (4) (5)
Fair value of plan assets at December 31$2,458
 $2,747
 $
 $
 $56
 $60
Change in projected benefit obligation:           
Projected benefit obligation at January 1$2,061
 $1,902
 $212
 $201
 $51
 $55
Service cost29
 29
 2
 2
 
 
Interest cost75
 78
 8
 8
 2
 2
Actuarial (gain) loss(142) 154
 
 12
 (3) (1)
Benefits paid(122) (102) (11) (11) (4) (5)
Projected benefit obligation at December 31$1,901
 $2,061
 $211
 $212
 $46
 $51
Accumulated benefit obligation$1,893
 $2,052
 $209
 $209
 $46
 $51
Funded status at December 31 (a) (b)$557
 $686
 $(211) $(212) $10
 $9
Weighted-average assumptions used:           
Discount rate4.37% 3.74% 4.37% 3.74% 4.26% 3.55%
Rate of compensation increase4.00
 3.75
 4.00
 3.75
 n/a
 n/a
Healthcare cost trend rate:           
Cost trend rate assumed for next yearn/a
 n/a
 n/a
 n/a
 6.50
 6.50
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)n/a
 n/a
 n/a
 n/a
 4.50
 4.50
Year when rate reaches the ultimate trend raten/a
 n/a
 n/a
 n/a
 2027
 2027
Amounts recognized in accumulated other comprehensive income (loss) before income taxes:           
Net actuarial loss$(687) $(548) $(76) $(85) $(19) $(19)
Prior service credit140
 159
 34
 42
 1
 1
Balance at December 31$(547) $(389) $(42) $(43) $(18) $(18)
(a)The qualified defined benefit pension plan was amended in 2021 to include a flat dollar benefit for specified participants that would otherwise have been payable from the non-qualified defined benefit pension plan, resulting in a shift in projected benefit obligation from the non-qualified plan to the qualified plan.
(a)Based on projected benefit obligation for defined benefit pension plans and accumulated benefit obligation for postretirement benefit plan.
(b)
(b)Based on projected benefit obligation for defined benefit pension plans and accumulated benefit obligation for postretirement benefit plan.
(c)The Corporation recognizes the overfunded and underfunded status of the plans in accrued income and other assets and accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheets.
(d)The qualified defined benefit pension plan for the year ending December 31, 2020 has been recast to reflect the retrospective application of the Corporation's election to change the accounting method for certain components of defined pension benefit credit, effective January 1, 2021. For further information, refer to Note 1.
The Corporation recognizes the overfunded and underfunded status of the plans in accrued income and other assets and accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheets.
n/a - not applicable
Because the non-qualified defined benefit pension plan has no assets, the accumulated benefit obligation exceeded the fair value of plan assets at December 31, 20182021 and December 31, 2017.2020.
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The following table details the changes in plan assets and benefit obligations recognized in other comprehensive income (loss)loss for the year ended December 31, 2018.2021.
 Defined Benefit Pension Plans    
(in millions)Qualified Non-Qualified Postretirement Benefit Plan Total
Actuarial (loss) gain arising during the period$(190) $
 $(1) $(191)
Amortization of net actuarial loss51
 9
 1
 61
Amortization of prior service credit(19) (8) 
 (27)
Total recognized in other comprehensive income (loss)$(158) $1
 $
 $(157)

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Defined Benefit Pension Plans 
(in millions)QualifiedNon-QualifiedPostretirement Benefit PlanTotal
Actuarial gain (loss) arising during the period$158 $3 $(2)$159 
Prior service (cost) credit arising during the period(36)36 1 1 
Amortization of net actuarial loss29 11  40 
Amortization of prior service credit(19)(6) (25)
Total recognized in other comprehensive loss$132 $44 $(1)$175 
Components of net periodic defined benefit (credit) cost and postretirement benefit cost,credit, the actual return on plan assets and the weighted-average assumptions used were as follows:
 Defined Benefit Pension Plans
(dollar amounts in millions)QualifiedNon-Qualified
Years Ended December 3120212020 (a)2019 (a)202120202019
Service cost (b)$38 $32 $31 $2 $$
Other components of net benefit (credit) cost:
Interest cost61 70 80 7 
Expected return on plan assets(202)(185)(172) — — 
Amortization of prior service credit(19)(19)(19)(6)(8)(8)
Amortization of net actuarial loss29 38 34 11 
Total other components of net benefit (credit) cost (c)(131)(96)(77)12 
Net periodic defined benefit (credit) cost$(93)$(64)$(46)$14 $10 $11 
Actual return on plan assets$291 $537 $579 n/an/an/a
Actual rate of return on plan assets8.92 %18.72 %24.07 %n/an/an/a
Weighted-average assumptions used:
Discount rate2.71 %3.43 %4.37 %2.71 %3.43 %4.37 %
Expected long-term return on plan assets6.50 6.50 6.50 n/an/an/a
Rate of compensation increase4.00 4.00 4.00 4.00 4.00 4.00 
 Defined Benefit Pension Plans
(dollar amounts in millions)Qualified Non-Qualified
Years Ended December 312018 2017 2016 2018 2017 2016
Service cost (a)$29
 $29
 $31
 $2
 $2
 $3
            
Other components of net benefit (credit) cost:           
Interest cost75
 78
 87
 8
 8
 10
Expected return on plan assets(165) (159) (163) 
 
 
Amortization of prior service credit(19) (19) (2) (8) (8) (5)
Amortization of net loss51
 43
 38
 9
 8
 7
Total other components of net benefit (credit) cost (b)(58) (57) (40) 9
 8
 12
Net periodic defined benefit (credit) cost$(29) $(28) $(9) $11
 $10
 $15
Actual return on plan assets$(167) $396
 $200
 n/a
 n/a
 n/a
Actual rate of return on plan assets(6.21)% 16.48% 8.66% n/a
 n/a
 n/a
Weighted-average assumptions used:           
Discount rate3.74 % 4.23% 4.53% 3.74% 4.23% 4.53%
Expected long-term return on plan assets6.50
 6.50
 6.75
 n/a
 n/a
 n/a
Rate of compensation increase3.75
 3.50
 3.75
 3.75
 3.50
 3.75
(a)Recast to reflect the retrospective application of the Corporation's election to change the accounting method for certain components of defined pension benefit credit, effective January 1, 2021. For 2020, expected return on plan assets increased $14 million and amortization of net loss was reduced by $16 million, resulting in an increase of $30 million to total other components of net benefit credit. For 2019, expected return on plan assets increased $6 million, resulting in a corresponding increase to total other components of net benefit credit.
(a)Included in salaries and benefits expense on the Consolidated Statements of Income.
(b)Included in other noninterest expenses on the Consolidated Statements of Income.
(b)Included in salaries and benefits expense on the Consolidated Statements of Income.
(c)Included in other noninterest expenses on the Consolidated Statements of Income.
n/a - not applicable
(dollar amounts in millions)Postretirement Benefit Plan
Years Ended December 31202120202019
Other components of net benefit credit:
Interest cost$1 $$
Expected return on plan assets(3)(2)(3)
Amortization of actuarial net loss — 
Net periodic postretirement benefit credit$(2)$(1)$— 
Actual return on plan assets$(1)$$
Actual rate of return on plan assets(2.25 %)6.00 %9.14 %
Weighted-average assumptions used:
Discount rate2.43%3.26 %4.26 %
Expected long-term return on plan assets5.005.00 5.00 
Healthcare cost trend rate:
Cost trend rate assumed6.006.25 6.50 
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)4.504.50 4.50 
Year that the rate reaches the ultimate trend rate202720272027
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Comerica Incorporated and Subsidiaries

(dollar amounts in millions)Postretirement Benefit Plan
Years Ended December 312018 2017 2016
Other components of net benefit cost:     
Interest cost$2
 $2
 $3
Expected return on plan assets(3) (3) (4)
Amortization of net loss1
 1
 1
Net periodic postretirement benefit cost$
 $
 $
Actual return on plan assets$(1) $2
 $2
Actual rate of return on plan assets(2.05)% 3.52% 2.83%
Weighted-average assumptions used:     
Discount rate3.55 % 3.92% 4.53%
Expected long-term return on plan assets5.00
 5.00
 5.00
Healthcare cost trend rate:     
Cost trend rate assumed6.50
 6.50
 7.00
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)4.50
 4.50
 5.00
Year that the rate reaches the ultimate trend rate2027
 2027
 2027
The expected long-term rate of return of plan assets is the average rate of return expected to be realized on funds invested or expected to be invested over the life of the plan, which has an estimated duration of approximately 11 years as of December 31, 2018.2021. The expected long-term rate of return on plan assets is set after considering both long-term returns in the general market and long-term returns experienced by the assets in the plan. The returns on the various asset categories are blended to derive onean equity and a fixed income long-term rate of return. The Corporation reviews its pension plan assumptions on an annual basis with its actuarial consultants to determine if assumptions are reasonable and adjusts the assumptions to reflect changes in future expectations.
The estimated portion of balances remaining in accumulated other comprehensive income (loss) that are expected to be recognized as a component of net periodic benefit cost in the year ended December 31, 2019 are as follows:
 Defined Benefit Pension Plans    
(in millions)Qualified Non-Qualified 
Postretirement
Benefit Plan
 Total
Net loss$34
 $8
 $1
 $43
Prior service credit(19) (8) 
 (27)

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Assumed healthcare cost trend rates have a significant effect on the amounts reported for the postretirement benefit plan. A one-percentage-point change in 2018 assumed healthcare and prescription drug cost trend rates would result in a two-percentage-point change in the postretirement benefit obligation.
Plan Assets
The Corporation’s overall investment goals for the qualified defined benefit pension plan are to maintain a portfolio of assets of appropriate liquidity and diversification; to generate investment returns (net of all operating costs) that are reasonably anticipated to maintain the plan’s fully funded status or to reduce a funding deficit, after taking into account various factors, including reasonably anticipated future contributions, and expense and the interest rate sensitivity of the plan’s assets relative to that of the plan’s liabilities; and to generate investment returns (net of all operating costs) that meet or exceed a customized benchmark as defined in the planplan's investment policy. Derivative instruments are permissible for hedging and transactional efficiency, but only to the extent that the derivative use enhances the efficient execution of the plan’s investment policy. The plan does not directly invest in securities issued by the Corporation and its subsidiaries. The Corporation’s target allocations for plan investments are 45 percent to 55 percent for both equity securities and fixed income, including cash. Equity securities include collective investment and mutual funds and common stock. Fixed income securities include U.S. Treasury and other U.S. government agency securities, mortgage-backed securities, corporate bonds and notes, municipal bonds, collateralized mortgage obligations and money market funds.
Fair Value Measurements
The Corporation’s qualified defined benefit pension plan utilizes fair value measurements to record fair value adjustments and to determine fair value disclosures. The Corporation’s qualified benefit pension plan categorizes investments recorded at fair value into a three-level hierarchy, based on the markets in which the investment are traded and the reliability of the assumptions used to determine fair value. Refer to Note 1 for a description of the three-level hierarchy.
Following is a description of the valuation methodologies and key inputs used to measure the fair value of the Corporation’s qualified defined benefit pension plan investments, including an indication of the level of the fair value hierarchy in which the investments are classified.
Mutual funds
Fair value measurement is based upon the net asset value (NAV) provided by the administrator of the fund. Mutual fund NAVs are quoted in an active market exchange, such as the New York Stock Exchange, and are included in Level 1 of the fair value hierarchy.
Common stock
Fair value measurement is based upon the closing price quoted in an active market exchange, such as the New York Stock Exchange. Level 1 common stock includes domestic and foreign stock and real estate investment trusts.
U.S. Treasury and other U.S. government agency securities
Level 1 securities include U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets. Fair value measurement is based upon quoted prices in an active market exchange, such as the New York Stock Exchange. Level 2 securities include debt securities issued by U.S. government agencies and U.S. government-sponsored entities. The fair value of Level 2 securities is determined using quoted prices of securities with similar characteristics, or pricing models based on observable market data inputs, primarily interest rates and spreads.
Corporate and municipal bonds and notes
Fair value measurement is based upon quoted prices of securities with similar characteristics or pricing models based on observable market data inputs, primarily interest rates, spreads and prepayment information. Level 2 securities include corporate bonds, municipal bonds, foreign bonds and foreign notes.
Mortgage-backed securities
Fair value measurement is based upon independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security's credit rating, prepayment assumptions and other factors, such as credit loss and liquidity assumptions, and are included in Level 2 of the fair value hierarchy.
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Comerica Incorporated and Subsidiaries

Private placements
Fair value is measured using the NAV provided by fund management as quoted prices in active markets are not available. Management considers additional discounts to the provided NAV for market and credit risk. Private placements are included in Level 3 of the fair value hierarchy.

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Collective investment funds
Fair value measurement is based upon the NAV provided by the administrator of the fund as a practical expedient to estimate fair value. There are no unfunded commitments or redemption restrictions on the collective investment funds. The investments are redeemable daily.
Fair Values
The fair values of the Corporation’s qualified defined benefit pension plan investments measured at fair value on a recurring basis at December 31, 20182021 and 2017,2020, by asset category and level within the fair value hierarchy, are detailed in the table below.
(in millions)TotalLevel 1Level 2Level 3
December 31, 2021
Fixed income securities:
U.S. Treasury and other U.S. government agency securities$599 $595 $4 $ 
Corporate and municipal bonds and notes893  893  
Mortgage-backed securities27  27  
Private placements50   50 
Total investments in the fair value hierarchy$1,569 $595 $924 $50 
Investments measured at net asset value:
Collective investment funds1,885 
Total investments at fair value$3,454 
December 31, 2020
Equity securities:
Mutual funds$$$— $— 
Common stock1,266 1,266 — — 
Fixed income securities:
U.S. Treasury and other U.S. government agency securities494 492 — 
Corporate and municipal bonds and notes861 — 861 — 
Mortgage-backed securities29 — 29 — 
Private placements58 — — 58 
Total investments in the fair value hierarchy$2,712 $1,762 $892 $58 
Investments measured at net asset value:
   Collective investment funds637 
Total investments at fair value$3,349 
(in millions)Total Level 1 Level 2 Level 3
December 31, 2018       
Equity securities:       
Mutual funds$3
 $3
 $
 $
Common stock803
 803
 
 
Fixed income securities:       
U.S. Treasury and other U.S. government agency securities496
 482
 14
 
Corporate and municipal bonds and notes679
 
 679
 
Mortgage-backed securities29
 
 29
 
Private placements60
 
 
 60
Total investments in the fair value hierarchy2,070

$1,288

$722

$60
        
Investments measured at net asset value:       
Collective investment funds392
 

 

 

Total investments at fair value$2,462
 

 

 

December 31, 2017       
Equity securities:       
     Mutual funds$1
 $1
 $
 $
Common stock961
 961
 
 
Fixed income securities:       
U.S. Treasury and other U.S. government agency securities456
 451
 5
 
Corporate and municipal bonds and notes765
 
 765
 
Mortgage-backed securities25
 
 25
 
Private placements80
 
 
 80
Total investments in the fair value hierarchy2,288
 $1,413
 $795
 $80
        
Investments measured at net asset value:       
   Collective investment funds455
      
Total investments at fair value$2,743
      
The table below provides a summary of changes in the Corporation’s qualified defined benefit pension plan’s Level 3 investments measured at fair value on a recurring basis for the years ended December 31, 20182021 and 2017.2020.
Balance at
Beginning
of Period
Balance at
End of Period
Net Gains (Losses)
(in millions)RealizedUnrealizedPurchasesSales
Year Ended December 31, 2021
Private placements$58 $2 $(4)$44 $(50)$50 
Year Ended December 31, 2020
Private placements$57 $$$57 $(60)$58 
 
Balance at
Beginning
of Period
         
Balance at
End of Period
  Net Gains (Losses)     
(in millions) Realized Unrealized Purchases Sales 
Year Ended December 31, 2018           
Private placements$80
 $(1) $(7) $70
 $(82) $60
Year Ended December 31, 2017           
Private placements$71
 $2
 $3
 $77
 $(73) $80
There were no assets in the non-qualified defined benefit pension plan at December 31, 20182021 and 2017.2020. The postretirement benefit plan is fully invested in bank-owned life insurance policies. The fair value of bank-owned life insurance policies is based on the cash surrender values of the policies as reported by the insurance companies and is classified in Level 2 of the fair value hierarchy.

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Cash Flows
The Corporation currently expects to make no employer contributions to the qualified and non-qualified defined benefit pension plans and postretirement benefit plan for the year ended December 31, 2019.2022.
Estimated Future Benefit Payments
(in millions)
Years Ended December 31
Qualified
Defined Benefit
Pension Plan
Non-Qualified
Defined Benefit
Pension Plan
Postretirement
Benefit Plan (a)
2022$215 $14 $4 
2023147 14 4 
2024148 14 3 
2025144 14 3 
2026144 14 3 
2027 - 2031687 68 9 
 Estimated Future Benefit Payments
(in millions)
Years Ended December 31
Qualified
Defined Benefit
Pension Plan
 
Non-Qualified
Defined Benefit
Pension Plan
 
Postretirement
Benefit Plan (a)
2019$125
 $12
 $5
2020125
 14
 5
2021128
 14
 5
2022131
 14
 5
2023133
 14
 4
2024 - 2028672
 73
 18
(a)Estimated benefit payments in the postretirement benefit plan are net of estimated Medicare subsidies.
(a)
Estimated benefit payments in the postretirement benefit plan are net of estimated Medicare subsidies.
Defined Contribution Plans
Substantially all of the Corporation’s employees are eligible to participate in the Corporation’s principal defined contribution plan (a 401(k) plan). Under this plan, the Corporation makes core matching cash contributions of 100 percent of the first 4 percent of qualified earnings contributed by employees (up to the current IRS compensation limit), invested based on employee investment elections. Employee benefits expense included expense for the plan of $21$24 million for both of the yearsyear ended December 31, 2018 and 20172021, $24 million for the year ended December 31, 2020 and $22 million for the year ended December 31, 2016.
Through December 31, 2016, the Corporation also provided a retirement account plan for the benefit of substantially all employees who worked at least 1,000 hours in a plan year and were not accruing a benefit in the defined benefit pension plan. Under the retirement account plan, the Corporation made an annual discretionary allocation to the individual account of each eligible employee ranging from 3 percent to 8 percent of annual compensation, determined based on combined age and years of service. The allocations were invested based on employee investment elections. Employees participating in the retirement account plan as of December 31, 2016 were eligible to participate in the cash balance pension plan effective January 1, 2017. Final retirement account plan balances were transferred to the Corporation's 401(k) plan in the first quarter of 2017. Contributions to the retirement account plan ceased for periods beginning after December 31, 2016. The Corporation recognized $10 million of employee benefits expense for the year ended December 31, 2016.2019.
Deferred Compensation Plans
The Corporation offers optional deferred compensation plans under which certain employees and non-employee directors (participants) may make an irrevocable election to defer incentive compensation and/or a portion of base salary until retirement or separation from the Corporation. The employeeparticipant may direct deferred compensation into one or more deemed investment options. Although not required to do so, the Corporation invests actual funds into the deemed investments as directed by employees,participants, resulting in a deferred compensation asset, recorded in other short-term investments on the Consolidated Balance Sheets that offsets the liability to employeesparticipants under the plan, recorded in accrued expenses and other liabilities. The earnings from the deferred compensation asset are recorded in interest on short-term investments and other noninterest income and the related change in the liability to employeesparticipants under the plan is recorded in salaries and benefits expense on the Consolidated Statements of Income.
NOTE 18 - INCOME TAXES AND TAX-RELATED ITEMS
The provision for income taxes is calculated as the sum of income taxes due for the current year and deferred taxes. Income taxes due for the current year isare computed by applying federal and state tax statutes to current year taxable income. Deferred taxes arise from temporary differences between the income tax basis and financial accounting basis of assets and liabilities. Tax-related interest and penalties and foreign taxes are then added to the tax provision.

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Comerica Incorporated and Subsidiaries


The current and deferred components of the provision for income taxes were as follows:
(in millions)   
December 31202120202019
Current:
Federal$212 $171 $267 
Foreign5 
State and local26 30 48 
Total current243 206 322 
Deferred:
Federal62 (73)17 
State and local17 (9)(3)
Total deferred79 (82)14 
Total$322 $124 $336 
(in millions)     
December 312018 2017 2016
Current:     
Federal$227
 $371
 $224
Foreign10
 5
 5
State and local39
 36
 15
Total current276
 412
 244
Deferred:     
Federal29
 (26) (49)
State and local3
 (2) (2)
Remeasurement of deferred taxes(8) 107
 
Total deferred24
 79
 (51)
Total$300
 $491
 $193
Income before income taxes of $1.5 billion for the year ended December 31, 20182021 included $38$25 million of foreign-sourceforeign taxable income.
The provision for income taxes included a $107 million charge for the year ended December 31, 2017 to adjust deferred taxes as a result
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Table of the enactment of the Tax CutsContents
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Jobs Act and an $8 million downward revision to the impact recorded in 2018. Refer to Note 1 for further details.Subsidiaries
The provision for income taxes for 2018 and 2017 included a benefit of $23 million and $35 million, respectively, related to employee stock transactions as a result of new accounting guidance for stock compensation. For the year ended December 31, 2016, tax effects of employee stock transactions of $4 million were recorded in shareholders' equity.
The provision for income taxes does not reflect the tax effects of unrealized gains and losses on investment securities available-for-sale, hedging transactions or the change in defined benefit pension and other postretirement plans adjustment included in accumulated other comprehensive loss.(loss) income. Refer to Note 14 for additional information on accumulated other comprehensive loss.(loss) income.
A reconciliation of expected income tax expense at the federal statutory rate to the Corporation’s provision for income taxes and effective tax rate follows:
(dollar amounts in millions)202120202019
Years Ended December 31AmountRateAmountRateAmountRate
Tax based on federal statutory rate$313 21.0 %$130 21.0 %$323 21.0 %
State income taxes35 2.4 18 2.9 34 2.2 
Affordable housing and historic credits(13)(0.9)(12)(1.9)(11)(0.7)
Bank-owned life insurance(10)(0.6)(10)(1.6)(9)(0.6)
FDIC insurance expense5 0.3 1.1 0.3 
Employee stock transactions(3)(0.2)(1)(0.2)(12)(0.8)
Tax-related interest and penalties  (2)(0.3)0.1 
Other(5)(0.4)(6)(1.0)0.3 
Provision for income taxes$322 21.6 %$124 20.0 %$336 21.8 %
(dollar amounts in millions)2018 2017 2016
Years Ended December 31Amount Rate Amount Rate Amount Rate
Tax based on federal statutory rate$323
 21.0 % $432
 35.0 % $235
 35.0 %
State income taxes35
 2.3
 22
 1.8
 8
 1.2
Employee stock transactions(23) (1.5) (35) (2.8) 
 
Capitalization and recovery positions (a)(17) (1.1) 
 
 
 
Affordable housing and historic credits(12) (0.8) (21) (1.7) (22) (3.3)
Bank-owned life insurance(9) (0.6) (16) (1.3) (15) (2.3)
Remeasurement of deferred taxes(8) (0.5) 107
 8.7
 
 
FDIC fees (b)8
 0.5
 
 
 
 
Other changes in unrecognized tax benefits4
 0.3
 
 
 
 
Tax-related interest and penalties(3) (0.2) 4
 0.3
 3
 0.5
Lease termination transactions
 
 (2) (0.2) (15) (2.2)
Other2
 0.1
 
 
 (1) (0.1)
Provision for income taxes$300
 19.5 % $491
 39.8 % $193
 28.8 %
(a)Tax benefits from the review of tax capitalization and recovery positions related to software and fixed assets included in the 2017 tax return.
(b)Beginning January 1, 2018, FDIC fees are no longer deductible as a result of the enactment of the Tax Cuts and Jobs Act.
The liability for tax-related interest and penalties, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, was $7 million and $10$6 million at both December 31, 20182021 and 2017,2020, respectively.
In the ordinary course of business, the Corporation enters into certain transactions that have tax consequences. From time to time, the Internal Revenue Service (IRS) may review and/or challenge specific interpretive tax positions taken by the Corporation with respect to those transactions. The Corporation believes that its tax returns were filed based upon applicable statutes, regulations and case law in effect at the time of the transactions. The IRS or other tax jurisdictions, an administrative authority or a court, if presented with the transactions, could disagree with the Corporation’s interpretation of the tax law.

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Comerica Incorporated and Subsidiaries


A reconciliation of the beginning and ending amount of net unrecognized tax benefits follows:
(in millions)2018 2017 2016(in millions)202120202019
Balance at January 1$10
 $15
 $22
Balance at January 1$19 $17 $14 
Increase as a result of tax positions taken during a prior period9
 4
 
Increase as a result of tax positions taken during a prior period1 
Decrease related to settlements with tax authorities(4) (8) (7)
Other(1) (1) 
Increase as a result of tax positions taken during the current periodIncrease as a result of tax positions taken during the current period3 — 
Decreases related to settlements with tax authoritiesDecreases related to settlements with tax authorities(3)(1)(1)
Reduction as a result of expiration of statute of limitationsReduction as a result of expiration of statute of limitations(2)— — 
Balance at December 31$14
 $10
 $15
Balance at December 31$18 $19 $17 
The Corporation anticipates it isdoes not anticipate any reasonably possible settlements with tax authorities that will result in a $1 million decreasechange in net unrecognized tax benefits within the next twelve months.
After consideration of the effect of the federal tax benefit available on unrecognized state tax benefits, the total amount of unrecognized tax benefits which, if recognized, would affect the Corporation’s effective tax rate was approximately $11 million and $8$14 million at December 31, 20182021 and 2017, respectively.$15 million at December 31, 2020.
The following tax years for significant jurisdictions remain subject to examination as of December 31, 2018:
2021:
JurisdictionTax Years
Federal2014-20172017-2020
California2006-20172006-2007, 2018-2020
Based on current knowledge and probability assessment of various potential outcomes, the Corporation believes current tax reserves are adequate, and the amount of any potential incremental liability arising is not expected to have a material adverse effect on the Corporation’s consolidated financial condition or results of operations. Probabilities and outcomes are reviewed as events unfold, and adjustments to the reserves are made when necessary.
The principal components of deferred tax assets and liabilities were as follows:
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Comerica Incorporated and Subsidiaries

(in millions)   (in millions)  
December 312018 2017December 3120212020
Deferred tax assets:   Deferred tax assets:
Allowance for depreciationAllowance for depreciation$7 $— 
Allowance for loan losses$141
 $150
Allowance for loan losses124 199 
Deferred compensation68
 49
Deferred compensation71 59 
Deferred loan origination fees and costs9
 6
Deferred loan origination fees and costs17 19 
Net unrealized losses on investment securities available-for-sale42
 31
Net unrealized losses on investment securities available-for-sale30 — 
Operating lease liabilitiesOperating lease liabilities74 72 
Other temporary differences, net42
 57
Other temporary differences, net21 51 
Total deferred tax asset before valuation allowance302
 293
Total deferred tax assets before valuation allowanceTotal deferred tax assets before valuation allowance344 400 
Valuation allowance(3) (3)Valuation allowance(5)(3)
Total deferred tax assets299
 290
Total deferred tax assets339 397 
Deferred tax liabilities:   Deferred tax liabilities:
Lease financing transactions(74) (76)Lease financing transactions(49)(70)
Defined benefit plans(41) (72)Defined benefit plans(198)(137)
Allowance for depreciation(18) (1)Allowance for depreciation (11)
Net hedging gainsNet hedging gains(17)(47)
Leasing Right of Use assetsLeasing Right of Use assets(66)(64)
Net unrealized gains on investment securities available-for-saleNet unrealized gains on investment securities available-for-sale (65)
Total deferred tax liabilities(133) (149)Total deferred tax liabilities(330)(394)
Net deferred tax asset$166
 $141
Net deferred tax assetsNet deferred tax assets$9 $
DeferredAt December 31, 2021, deferred tax assets included $3 million of federal foreign tax credit carryforwards expiring between 2028 and 2030. In addition, there were $3 million of state net operating loss (NOL) carryforwards of $4 million at both December 31, 20182021 and December 31, 2017, which expire2020, expiring between 20182022 and 2027.2030. The Corporation believes it is more likely than not that the benefit from federal foreign tax credits and certain of these state net operating lossNOL carryforwards will not be realized and, accordingly, maintainedmaintains a federal valuation allowance of $3 million and a state valuation allowance of $2 million at both December 31, 2018 and2021, compared to a $3 million state valuation allowance at December 31, 2017.2020. For further information on the Corporation’s valuation policy for deferred tax assets, refer to Note 1.

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NOTE 19 - TRANSACTIONS WITH RELATED PARTIES
The Corporation’s banking subsidiaries had, and expect to have in the future, transactions with the Corporation’s directors and executive officers, companies with which these individuals are associated and certain related individuals. Such transactions were made in the ordinary course of business and included extensions of credit, leases and professional services. With respect to extensions of credit, all were made on substantially the same terms, including interest rates and collateral, as those prevailing at the same time for comparable transactions with other customers and did not, in management’s opinion, involve more than normal risk of collectibility or present other unfavorable features. The aggregate amount of loans attributable to persons who were related parties at December 31, 2018,2021 totaled $66$73 million at the beginning of 20182021 and $109$74 million at the end of 2018.2021. During 2018,2021, new loans to related parties aggregated $716$155 million and repayments totaled $673$154 million.
NOTE 20 - REGULATORY CAPITAL AND RESERVE REQUIREMENTS
Reserves required to be maintained and/or deposited with the FRB are classifiedclassified in interest-bearing deposits with banks. These reserve balances vary, depending on the level of customer deposits in the Corporation’s banking subsidiaries. On March 15, 2020, the Federal Reserve Board announced the reserve requirement ratios would be reduced to zero effective March 26, 2020, eliminating reserve requirements for all depository institutions. The average required reserve balances were $599 million and $572balance was $135 million for the yearsyear ended December 31, 2018 and 2017, respectively.2020.
Banking regulations limit the transfer of assets in the form of dividends, loans or advances from the bank subsidiaries to the parent company. Under the most restrictive of these regulations, the aggregate amount of dividends which can be paid to the parent company, with prior approval from bank regulatory agencies, approximated $108$347 million at January 1, 2019,2022, plus 20192022 net profits. Substantially all the assets of the Corporation’s banking subsidiaries are restricted from transfer to the parent company of the Corporation in the form of loans or advances.
The Corporation’s subsidiary banks declared dividends of $1.1$852 million, $498 million and $1.2 billion $907 millionin 2021, 2020 and $545 million in 2018, 20172019, respectively.
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The Corporation and its U.S. banking subsidiaries are subject to various regulatory capital requirements administered by federal and state banking agencies. The U.S. adoption ofagencies under the Basel III regulatory capital framework (Basel III) became effective for the Corporation on January 1, 2015. Basel III sets forth two. This regulatory framework establishes comprehensive methodologies for calculating regulatory capital and risk-weighted assets (RWA), a. Basel III also set minimum capital ratios as well as overall capital adequacy standards.
Under Basel III, regulatory capital comprises Common Equity Tier 1 (CET1) capital, additional Tier 1 capital and Tier 2 capital. CET1 capital predominantly includes common shareholders' equity, less certain deductions for goodwill, intangible assets and deferred tax assets that arise from net operating losses and tax credit carry-forwards. Additionally, the Corporation has elected to permanently exclude capital in accumulated other comprehensive income (AOCI) related to debt and equity securities classified as available-for-sale as well as for cash flow hedges and defined benefit postretirement plans from CET1, an option available to standardized approach entities under Basel III. Tier 1 capital incrementally includes noncumulative perpetual preferred stock. Tier 2 capital includes Tier 1 capital as well as subordinated debt qualifying as Tier 2 and an advanced approach. Thequalifying allowance for credit losses. In addition to the minimum risk-based capital requirements, the Corporation and its U.S. bankingBank subsidiaries are subjectrequired to maintain a minimum capital conservation buffer, in the form of common equity, of 2.5 percent in order to avoid restrictions on capital distributions and discretionary bonuses.
The Corporation computes RWA using the standardized approach under the rules.approach. Under the standardized approach, RWA is generally based on supervisory risk-weightings which vary by counterparty type and asset class. Under the Basel III standardized approach, capital is required for credit risk RWA, to cover the risk of unexpected losses due to failure of a customer or counterparty to meet its financial obligations in accordance with contractual terms; and if trading assets and liabilities exceed certain thresholds, capital is also required for market risk RWA, to cover the risk of losses due to adverse market movements or from position-specific factors.
Under Basel III, there are three categories of risk-based capital: CET1 capital, Tier 1 capital and Tier 2 capital. CET1 capital predominantly includes common shareholders' equity, less certain deductions for goodwill, intangible assets and deferred tax assets that arise from net operating losses and tax credit carry-forwards. Additionally, the Corporation has elected to permanently exclude capital in accumulated other comprehensive income related to debt and equity securities classified as available-for-sale as well as for defined benefit postretirement plans from CET1, an option available to standardized approach entities under Basel III. Tier 1 capital incrementally includes noncumulative perpetual preferred stock. Tier 2 capital includes Tier 1 capital as well as subordinated debt qualifying as Tier 2 and qualifying allowance for credit losses. Total capital is Tier 1 capital plus Tier 2 capital. In addition to the minimum risk-based capital requirements, the Corporation is required to maintain a minimum capital conservation buffer, in the form of common equity, in order to avoid restrictions on capital distributions and discretionary bonuses. The required amount of the capital conservation buffer is being phased in and ultimately increasing to 2.5% on January 1, 2019.
Quantitative measures established by regulation to ensure capital adequacy require the maintenance of minimum amounts and ratios of CET1, Tier 1 and total capital (as defined in the regulations) to average and/or risk-weighted assets. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Corporation’s financial statements. At December 31, 20182021 and 2017,2020, the Corporation and its U.S. banking subsidiaries exceeded the ratios required for an institution to be considered “well capitalized”. For U.S. banking subsidiaries, those requirements were total risk-based capital, Tier 1 risk-based capital, CET1 risk-based capital and leverage ratios greater than 10 percent, 8 percent, 6.5 percent and 5 percent, respectively, at December 31, 20182021 and 2017.2020. For the Corporation, requirements to be considered "well capitalized" were total risk-based capital and Tier 1 risk-based capital ratios greater than 10 percent and 6 percent, respectively, at December 31, 20182021 and 2017.2020. There have been no conditions or events since December 31, 20182021 that management believes have changed the capital adequacy classification of the Corporation or its U.S. banking subsidiaries.

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The following is a summary of the capital position of the Corporation and Comerica Bank, its principal banking subsidiary.
(dollar amounts in millions)Comerica
Incorporated
(Consolidated)
Comerica
Bank
December 31, 2021
CET1 capital (minimum $3.1 billion (Consolidated))$7,064 $7,634 
Tier 1 capital (minimum $4.2 billion (Consolidated))7,458 7,634 
Total capital (minimum $5.6 billion (Consolidated))8,608 8,584 
Risk-weighted assets69,708 69,542 
Average assets (fourth quarter)96,417 96,216 
CET1 capital to risk-weighted assets (minimum-4.5%)10.13 %10.98 %
Tier 1 capital to risk-weighted assets (minimum-6.0%)10.70 10.98 
Total capital to risk-weighted assets (minimum-8.0%)12.35 12.34 
Tier 1 capital to average assets (minimum-4.0%)7.74 7.93 
Capital conservation buffer (minimum-2.5%)4.35 4.34 
December 31, 2020
CET1 capital (minimum $3.0 billion (Consolidated))$6,919 $7,278 
Tier 1 capital (minimum $4.0 billion (Consolidated))7,313 7,278 
Total capital (minimum $5.4 billion (Consolidated))8,833 8,547 
Risk-weighted assets66,931 66,759 
Average assets (fourth quarter)84,705 84,536 
CET1 capital to risk-weighted assets (minimum-4.5%)10.34 %10.90 %
Tier 1 capital to risk-weighted assets (minimum-6.0%)10.93 10.90 
Total capital to risk-weighted assets (minimum-8.0%)13.20 12.80 
Tier 1 capital to average assets (minimum-4.0%)8.63 8.61 
Capital conservation buffer (minimum-2.5%)4.93 4.80 
(dollar amounts in millions)
Comerica
Incorporated
(Consolidated)
 
Comerica
Bank
December 31, 2018   
CET1 capital (minimum $3.0 billion (Consolidated))$7,470
 $7,229
Tier 1 capital (minimum $4.0 billion (Consolidated))7,470
 7,229
Total capital (minimum $5.4 billion (Consolidated))8,855
 8,433
Risk-weighted assets67,047
 66,857
Average assets (fourth quarter)71,070
 70,905
CET1 capital to risk-weighted assets (minimum-4.5%)11.14% 10.81%
Tier 1 capital to risk-weighted assets (minimum-6.0%)11.14
 10.81
Total capital to risk-weighted assets (minimum-8.0%)13.21
 12.61
Tier 1 capital to average assets (minimum-4.0%)10.51
 10.20
Capital conservation buffer5.14
 4.61
December 31, 2017   
CET1 capital (minimum $3.0 billion (Consolidated))$7,773
 $7,121
Tier 1 capital (minimum $4.0 billion (Consolidated))7,773
 7,121
Total capital (minimum $5.3 billion (Consolidated))9,211
 8,378
Risk-weighted assets66,575
 66,447
Average assets (fourth quarter)71,372
 71,181
CET1 capital to risk-weighted assets (minimum-4.5%)11.68% 10.72%
Tier 1 capital to risk-weighted assets (minimum-6.0%)11.68
 10.72
Total capital to risk-weighted assets (minimum-8.0%)13.84
 12.61
Tier 1 capital to average assets (minimum-4.0%)10.89
 10.00
Capital conservation buffer5.68
 4.61
NOTE 21 - CONTINGENT LIABILITIES
Legal Proceedings and Regulatory Matters
ComericaAs previously reported, the Bank appealed a wholly-owned subsidiary of the Corporation, was namedcourt's decision in November 2011 as a third-party defendant in Butte Local Development v. Masters Group v. Comerica Bank, (the case), for lender liability. The case was tried in January 2014, in the Montana Second District Judicial Court for Silver Bow County in Butte, Montana. On January 17, 2014, a jury awarded Masters $52 million against the Bank. On July 1, 2015, after an appeal filed by the Corporation,6, 2021, the Montana Supreme Court affirmed in part, reversed in part the trial court's judgment againstin favor of Masters. The court reduced the amount of the award by $8 million.
Additionally, in second quarter 2021, the Corporation and remanded the case foragreed to a new trialproposed settlement in connection with instructions that Michigan contract law should apply and dismissing all other claims. The case was retrieda class action lawsuit filed in the same district court, withoutU.S. District Court in California and a jury,related Trustee claim pending in the U.S. Bankruptcy Court in Delaware. The net impact of this settlement, including the Corporation's insurance coverage, was $15 million and included in other noninterest expenses. The settlement was paid in January 2017,2022 and included in accrued expenses and other liabilities on the Corporation awaits a ruling. Management believes that current reserves related to this case are adequate in the eventConsolidated Balance Sheets as of a negative outcome.December 31, 2021.
The Corporation and certain of its subsidiaries are subject to various other pending or threatened legal proceedings arising out of the normal course of business or operations. The Corporation believes it has meritorious defenses to the claims asserted against it in its other currently outstanding legal proceedings and, with respect to such legal proceedings, intends to continue to defend itself vigorously, litigating or settling cases according to management’s judgment as to what is in the best interests of the Corporation and its shareholders. Settlement may result from the Corporation's determination that it may be more prudent financially to settle, rather than litigate, and should not be regarded as an admission of liability.
Further, from time to time, the Corporation is also subject to examinations, inquiries and investigations by regulatory authorities in areas including, but not limited to, compliance, risk management and consumer protection, which could lead to administrative or legal proceedings or settlements. For example, the Consumer Financial Protection Bureau (“CFPB”) is investigating certain of the Corporation's practices, and the Corporation has responded and continues to respond to the CFPB. We are unable to predict the outcome of these discussions at this time. Remedies in these proceedings or settlements may include fines, penalties, restitution or alterations in the Corporation's business practices and may result in increased operating expenses or decreased revenues.
On at least a quarterly basis, the Corporation assesses its potential liabilities and contingencies in connection with outstanding legal proceedings and regulatory matters utilizing the latest information available. On a case-by-case basis, reserves accruals
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are established for those legal claims and regulatory matters for which it is probable that a loss will be incurred either as a result of a settlement or judgment, and the amount of such loss can be reasonably estimated. The actual costs of resolving these claims and regulatory matters may be substantially higher or lower than the amounts reserved.accrued. Based on current knowledge, and after consultation with legal counsel, management believes current reservesaccruals are adequate, and the amount of any incremental liability arising from these matters is not expected to have a material adverse effect on the Corporation’s consolidated financial condition, results of operations or cash flows. Legal fees of $14 million, $17 million $15 million and $19$15 million for the years ended December 31, 2018, 20172021, 2020 and 2016,2019, respectively, were included in other noninterest expenses on the Consolidated Statements of Income.
For matters where a loss is not probable, the Corporation has not established legal reserves.an accrual. The Corporation believes the estimate of the aggregate range of reasonably possible losses, in excess of reserves established accruals, for all legal proceedings and regulatory matters in which it is involved is from zero to approximately $33$48 million at December 31, 2018.2021. This estimated aggregate range of reasonably

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possible losses is based upon currently available information for those legal proceedings and regulatory matters in which the Corporation is involved, taking into account the Corporation’s best estimate of such losses for those legal cases and regulatory matters for which such estimate can be made. For certain legal cases and regulatory matters, the Corporation does not believe that an estimate can currently be made. The Corporation’s estimate involves significant judgment, given the varying stages of the legal proceedings and regulatory matters (including the fact many are currently in preliminary stages), the existence in certain legal proceedings of multiple defendants (including the Corporation) whose share of liability has yet to be determined, the numerous yet-unresolved issues in many of the legal proceedings and regulatory matters (including issues regarding class certification and the scope of many of the claims) and the attendant uncertainty of the various potential outcomes of such proceedings.legal proceedings and regulatory matters. Accordingly, the Corporation’s estimate will change from time to time, and actual losses may be more or less than the current estimate.

In the event of unexpected future developments, it is possible that the ultimate resolution of these matters, if unfavorable, may be material to the Corporation's consolidated financial condition, results of operations or cash flows.
For information regarding income tax contingencies, refer to Note 18.

NOTE 22 - RESTRUCTURING CHARGESSTRATEGIC LINES OF BUSINESS
The Corporation launched an initiative in 2016 designed to reduce overhead and increase revenue (the "GEAR Up" initiative). The actions in the initiative include, but are not limited to, a reduction in workforce, a new retirement program, streamlining operational processes, real estate optimization including consolidating banking centers as well as reducing office and operations space, selective outsourcing of technology functions, reduction of technology system applications, enhanced sales tools and training, expanded product offerings and improved customer analytics to drive opportunities.
Certain actions associated with the GEAR Up initiative resulted in restructuring charges. Generally, costs associated with or incurred to generate revenue as part of the initiative were recorded according to the nature of the cost and were not included in restructuring charges. The Corporation considers the following costs associated with the initiative to be restructuring charges:
Employee costs: Primarily severance costs in accordance with the Corporation’s severance plan.
Facilities costs: Costs pertaining to consolidating banking centers and other facilities, such as lease termination costs and decommissioning costs. Also includes accelerated depreciation and impairment of owned property to be sold.
Technology costs: Impairment and other costs associated with optimizing technology infrastructure and reducing the number of applications.
Other costs: Includes primarily professional fees, as well as other contract termination fees and legal fees incurred in the execution of the initiative.

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Restructuring charges are recorded as a component of noninterest expenses on the Consolidated Statements of Income. The following table presents changes in restructuring reserves and cumulative charges incurred to date:
(in millions)Employee Costs Facilities Costs Technology Costs Other Costs Total
          
Year Ended December 31, 2018         
Balance at beginning of period$8
 $
 $6
 $1
 $15
Restructuring charges10
 4
 37
 2
 53
Payments(13) (3) (39) (3) (58)
Balance at end of period$5
 $1
 $4
 $
 $10
          
Year Ended December 31, 2017         
Balance at beginning of period$10
 $4

$

$4
 $18
Restructuring charges10
 2
 26
 7
 45
Payments(12) (6) (15) (10) (43)
Adjustments for non-cash charges (a)
 
 (5) 
 (5)
Balance at end of period$8
 $
 $6
 $1
 $15
          
Year Ended December 31, 2016         
Balance at beginning of period$
 $
 $
 $
 $
Restructuring charges52
 15
 
 26
 93
Payments(44) (6) 
 (22) (72)
Adjustments for non-cash charges (a)2
 (5) 
 
 (3)
Balance at end of period$10
 $4
 $
 $4
 $18
          
Total restructuring charges incurred (b)$72
 $21
 $63
 $35
 $191
(a)Adjustments for non-cash charges primarily relate to impairments of previously capitalized software costs in Technology Costs.
(b)Restructuring activities were completed as of 12/31/2018.
Restructuring charges directly attributable to a business segment are assigned to that business segment. For example, facilities costs pertaining to the consolidation of banking centers primarily impacted the Retail Bank. Restructuring charges incurred by areas whose services support the overall Corporation are allocated based on the methodology described in Note 23 to the consolidated financial statements. Total restructuring charges assigned to the Business Bank, Retail Bank and Wealth Management were $30 million, $16 million and $7 million, respectively, for the year ended December 31, 2018, $24 million, $15 million and $6 million, respectively, for the year ended December 31, 2017 and $43 million, $38 million and $12 million, respectively, for the year ended December 31, 2016.
NOTE 23 - BUSINESS SEGMENT INFORMATION
The Corporation has strategically aligned its operations into three3 major business segments: the BusinessCommercial Bank, the Retail Bank and Wealth Management. These business segments are differentiated based on the type of customer and the related products and services provided. In addition to the three3 major business segments, the Finance Division is also reported as a segment. Business segment results are produced by the Corporation’s internal management accounting system. This system measures financial results based on the internal business unit structure of the Corporation. The performance of the business segments is not comparable with the Corporation's consolidated results and is not necessarily comparable with similar information for any other financial institution. Additionally, because of the interrelationships of the various segments, the information presented is not indicative of how the segments would perform if they operated as independent entities. The management accounting system assigns balance sheet and income statement items to each business segment using certain methodologies, which are regularly reviewed and refined. From time to time, the Corporation may make reclassifications among the segments to more appropriately reflect management's current view of the segments, and methodologies may be modified as the management accounting system is enhanced and changes occur in the organizational structure and/or product lines. During the 2018, the Small Business component was reclassified from Retail Bank to Business Bank. For comparability purposes, amounts in all periods are based on business unit structure and methodologies in effect at December 31, 2018.2021.
Net interest income for each segment reflects the interest income generated by earning assets less interest expense on interest-bearing liabilities plus the net impact from associated internal funds transfer pricing (FTP) funding credits and charges. The FTP methodology allocates credits to each business segment for deposits and other funds provided as well as charges for loans and other assets being funded. This credit or charge is based on matching stated or implied maturities for these assets and liabilities. The FTP crediting rates foron deposits and other funds provided reflect the long-term value of deposits and other funding sources based on their implied maturity. Due to the longer-term nature of implied maturities, FTP crediting rates are generally less volatile than changes in interest rates observed in the market. FTP charge rates for funding loans and other assets reflect a matched cost of funds based on the pricing and duration characteristics of

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporatedapplying matched funding, interest revenue for each segment resulting from loans and Subsidiaries


other assets is generally not impacted by changes in interest rates. Therefore, net interest income for each segment primarily reflects the assets.volume of loans and other earning assets at the spread over the matched cost of funds, as well as the volume of deposits at the associated FTP crediting rates. For acquired loans and deposits, matched maturity funding is determined based on origination date. Accordingly, the FTP process reflects the transfer of interest rate risk exposures to the Corporate Treasury department within the Finance segment, where such exposures are centrally managed. Effective January 1, 2016, in conjunction with the effective date for regulatory Liquidity Coverage Ratio (LCR) requirements, the Corporation prospectively implemented an additional FTP charge, primarily for the cost of maintaining liquid assets to support potential draws on unfunded loan commitments and for the long-term economic cost of holding collateral for secured deposits. The allowance for loancredit losses is allocated to the business segments based on the
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methodology used to estimate the consolidated allowance for loancredit losses described in Note 1. The related provision for loancredit losses is assigned based on the amount necessary to maintain an allowance for loancredit losses appropriate for each business segment. Noninterest income and expenses directly attributable to a line of business are assigned to that business segment. Direct expenses incurred by areas whose services support the overall Corporation are allocated to the business segments as follows: product processing expenditures are allocated based on standard unit costs applied to actual volume measurements; administrative expenses are allocated based on estimated time expended; and corporate overhead is assigned 50 percent based on the ratio of the business segment’s noninterest expenses to total noninterest expenses incurred by all business segments and 50 percent based on the ratio of the business segment’s attributed equity to total attributed equity of all business segments. Equity is attributed based on credit, operational and interest rate risks. Most of the equity attributed relates to credit risk, which is determined based on the credit score and expected remaining life of each loan, letter of credit and unused commitment recorded in the business segments. Operational risk is allocated based on loans and letters of credit, deposit balances, non-earning assets, trust assets under management, certain noninterest income items, and the nature and extent of expenses incurred by business units. Virtually all interest rate risk is assigned to Finance, as are the Corporation’s hedging activities.
The following discussion provides information about the activities of each business segment. A discussion of the financial results and the factors impacting 20182021 performance can be found in the"Strategic Lines of Business" section entitled "Business Segments" inof the financial review.
The BusinessCommercial Bank meets the needs of small and middle market businesses, multinational corporations and governmental entities by offering various products and services including commercial loans and lines of credit, deposits, cash management, capital market products, international trade finance, letters of credit, foreign exchange management services and loan syndication services.
The Retail Bank includes a full range of personal financial services, consisting of consumer lending, consumer deposit gathering and mortgage loan origination. This business segment offers a variety of consumer products, including deposit accounts, installment loans, credit cards, student loans, home equity lines of credit and residential mortgage loans. In addition,
this business segment offers a subset of commercial products and services to micro-businesses whose primary contact is through the branch network.
Wealth Management offers products and services consisting of fiduciary services, private banking, retirement services, investment management and advisory services, investment banking and brokerage services. This business segment also offers the sale of annuity products, as well as life, disability and long-term care insurance products.
The Finance segment includes the Corporation’s securities portfolio and asset and liability management activities. This segment is responsible for managing the Corporation’s funding, liquidity and capital needs, performing interest sensitivity analysis and executing various strategies to manage the Corporation’s exposure to liquidity, interest rate risk and foreign exchange risk.
The Other category includes the income and expense impact of equity and cash, tax benefits not assigned to specific business segments, charges of an unusual or infrequent nature that are not reflective of the normal operations of the business segments and miscellaneous other expenses of a corporate nature.

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Business segment financial results are as follows:
(dollar amounts in millions)
Business
Bank
 
Retail
Bank
 Wealth Management Finance Other Total
Year Ended December 31, 2018
Earnings summary:           
Net interest income (expense)$1,613
 $548
 $181
 $(46) $56
 $2,352
Provision for credit losses6
 (1) (3) 
 (3) (1)
Noninterest income547
 136
 266
 27
 
 976
Noninterest expenses847
 602
 293
 (4) 56
 1,794
Provision (benefit) for income taxes283
 18
 36
 (14) (23)(a)300
Net income (loss)$1,024
 $65
 $121
 $(1) $26
 $1,235
Net credit-related charge-offs (recoveries)$52
 $
 $(1) $
 $
 $51
            
Selected average balances:           
Assets$43,207
 $2,633
 $5,214
 $13,705
 $5,965
 $70,724
Loans41,618
 2,067
 5,081
 
 
 48,766
Deposits30,116
 20,812
 3,941
 941
 125
 55,935
            
Statistical data:           
Return on average assets (b)2.37% 0.31% 2.32% N/M
 N/M
 1.75%
Efficiency ratio (c)39.22
 87.47
 65.60
 N/M
 N/M
 53.56
(dollar amounts in millions)
Business
Bank
 
Retail
Bank
 Wealth Management Finance Other Total(dollar amounts in millions)Commercial
Bank
Retail
Bank
Wealth ManagementFinanceOtherTotal
Year Ended December 31, 2017
Year Ended December 31, 2021Year Ended December 31, 2021Commercial
Bank
Retail
Bank
Wealth ManagementFinanceOtherTotal
Earnings summary:           Earnings summary:
Net interest income (expense)$1,513
 $453
 $169
 $(111) $37
 $2,061
Net interest income (expense)$1,577 $565 $166 $(471)$7 $1,844 
Provision for credit losses69
 2
 1
 
 2
 74
Provision for credit losses(346)(5)(32) (1)(384)
Noninterest income639
 154
 255
 49
 10
 1,107
Noninterest income663 123 279 41 17 1,123 
Noninterest expenses918
 615
 285
 (4) 46
 1,860
Noninterest expenses873 645 317 1 25 1,861 
Provision (benefit) for income taxes410
 (4) 51
 (35) 69
(a)491
Provision (benefit) for income taxes384 5 36 (100)(3)322 
Net income (loss)$755
 $(6) $87
 $(23) $(70) $743
Net income (loss)$1,329 $43 $124 $(331)$3 $1,168 
Net credit-related (recoveries) charge-offs$96
 $1
 $(5) $
 $
 $92
Net credit-related (recoveries) charge-offs$(12)$2 $ $ $ $(10)
           
Selected average balances:           Selected average balances:
Assets$42,653
 $2,626
 $5,401
 $13,954
 $6,818
 $71,452
Assets$43,874 $3,213 $5,028 $17,705 $20,332 $90,152 
Loans41,241
 2,061
 5,256
 
 
 48,558
Loans41,804 2,382 4,903  (6)49,083 
Deposits31,999
 20,775
 4,081
 241
 162
 57,258
Deposits45,587 25,682 5,218 965 229 77,681 
           
Statistical data:           Statistical data:
Return on average assets (b)1.77% (0.03)% 1.61% N/M
 N/M
 1.04%
Efficiency ratio (c)42.67
 100.72
 67.06
 N/M
 N/M
 58.64
Return on average assets (a)Return on average assets (a)2.71 %0.16 %2.24 %n/mn/m1.30 %
Efficiency ratio (b)Efficiency ratio (b)38.98 92.98 71.02 n/mn/m62.60 
Year Ended December 31, 2020Year Ended December 31, 2020
Earnings summary:Earnings summary:
Net interest income (expense)Net interest income (expense)$1,607 $503 $167 $(384)$18 $1,911 
Provision for credit lossesProvision for credit losses495 35 — — 537 
Noninterest incomeNoninterest income555 110 263 55 18 1,001 
Noninterest expenses (c)Noninterest expenses (c)815 607 295 35 1,754 
Provision (benefit) for income taxes (c)Provision (benefit) for income taxes (c)184 (3)22 (78)(1)124 
Net income (loss) (c)Net income (loss) (c)$668 $$78 $(253)$$497 
Net credit-related charge-offsNet credit-related charge-offs$192 $$$— $— $196 
Selected average balances:Selected average balances:
AssetsAssets$45,603 $3,281 $5,162 $15,418 $11,682 $81,146 
LoansLoans44,123 2,468 5,045 — (5)51,631 
DepositsDeposits36,603 22,832 4,402 1,026 175 65,038 
Statistical data:Statistical data:
Return on average assets (a), (c)Return on average assets (a), (c)1.47 %— %1.51 %n/mn/m0.61 %
Efficiency ratio (b), (c)Efficiency ratio (b), (c)37.70 98.52 68.47 n/mn/m60.13 
(Table continues on following page)

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries



(dollar amounts in millions)Commercial BankRetail
Bank
Wealth ManagementFinanceOtherTotal
Year Ended December 31, 2019
Earnings summary:
Net interest income (expense)$1,655 $568 $183 $(123)$56 $2,339 
Provision for credit losses88 (4)(14)— 74 
Noninterest income555 132 270 41 12 1,010 
Noninterest expenses (c)793 594 282 67 1,737 
Provision (benefit) for income taxes (c)307 25 44 (26)(14)336 
Net income (loss) (c)$1,022 $85 $141 $(57)$11 $1,202 
Net credit-related charge-offs (recoveries)$111 $$(5)$— $— $107 
Selected average balances:
Assets$44,946 $2,852 $5,083 $13,903 $4,704 $71,488 
Loans43,477 2,104 4,935 — (5)50,511 
Deposits29,047 20,743 3,833 1,673 185 55,481 
Statistical data:
Return on average assets (a), (c)2.28 %0.40 %2.78 %n/mn/m1.68 %
Efficiency ratio (b), (c)35.87 84.16 62.15 n/mn/m51.65 
(a)Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity.
(dollar amounts in millions)
Business
Bank
 
Retail
Bank
 Wealth Management Finance Other Total
Year Ended December 31, 2016
Earnings summary:           
Net interest income (expense)$1,506
 $393
 $158
 $(283) $23
 $1,797
Provision for credit losses254
 (2) (4) 
 
 248
Noninterest income608
 153
 243
 43
 4
 1,051
Noninterest expenses963
 643
 301
 (4) 27
 1,930
Provision (benefit) for income taxes284
 (34) 36
 (90) (3) 193
Net income (loss)$613
 $(61) $68
 $(146) $3
 $477
Net credit-related charge-offs$155
 $2
 $
 $
 $
 $157
            
Selected average balances:           
Assets$43,373
 $2,675
 $5,232
 $13,993
 $6,470
 $71,743
Loans41,954
 1,994
 5,048
 
 
 48,996
Deposits32,930
 20,332
 4,126
 88
 265
 57,741
            
Statistical data:           
Return on average assets (b)1.41% (0.29)% 1.32% N/M
 N/M
 0.67%
Efficiency ratio (c)45.52
 116.63
 75.03
 N/M
 N/M
 67.62
(b)Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding net losses from securities and a derivative contract tied to the conversion rate of Visa Class B shares.
(a)Primarily reflected discrete tax items, including a benefit of $48 million in 2018 and a net charge of $72 million in 2017.
(b)Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity.
(c)Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding gains (losses) from securities and a derivative contract tied to the conversion rate of Visa Class B shares.
N/M(c)See Defined Benefit Pension and Other Postretirement Costs in Note 1.
n/m – not meaningful
The Corporation operates in three primary markets - Texas, California, and Michigan, as well as in Arizona and Florida, with select businesses operating in several other states, and in Canada and Mexico. The Corporation produces market segment results for the Corporation’s three primary geographic markets as well as Other Markets. Other Markets includes Florida, Arizona, the International Finance division and businesses with a national perspective. The Finance & Other category includes the Finance segment and the Other category as previously described. Market segment results are provided as supplemental information to the business segment results and may not meet all operating segment criteria as set forth in GAAP. For comparability purposes, amounts in all periods are based on market segments and methodologies in effect at December 31, 2018.
A discussion of the financial results and the factors impacting performance can be found in the section entitled "Market Segments" in the financial review.
Market segment financial results are as follows:

F-98
(dollar amounts in millions)Michigan California Texas 
Other
Markets
 
Finance
& Other
 Total
Year Ended December 31, 2018
Earnings summary:           
Net interest income$727
 $788
 $475
 $352
 $10
 $2,352
Provision for credit losses30
 31
 (53) (6) (3) (1)
Noninterest income296
 164
 130
 359
 27
 976
Noninterest expenses577
 424
 365
 376
 52
 1,794
Provision (benefit) for income taxes90
 122
 64
 61
 (37)(a)300
Net income$326
 $375
 $229
 $280
 $25
 $1,235
Net credit-related charge-offs$7
 $27
 $12
 $5
 $
 $51
            
Selected average balances:           
Assets$13,207
 $18,532
 $10,389
 $8,925
 $19,671
 $70,724
Loans12,531
 18,283
 9,821
 8,131
 
 48,766
Deposits20,772
 16,964
 8,993
 8,141
 1,065
 55,935
            
Statistical data:           
Return on average assets (b)1.52% 2.02% 2.20% 3.14% N/M
 1.75%
Efficiency ratio (c)56.16
 44.58
 60.28
 52.95
 N/M
 53.56
(Table continues on following page)

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries



(dollar amounts in millions)Michigan California Texas 
Other
Markets
 
Finance
& Other
 Total
Year Ended December 31, 2017
Earnings summary:           
Net interest income (expense)$657
 $711
 $451
 $316
 $(74) $2,061
Provision for credit losses8
 104
 (72) 33
 1
 74
Noninterest income324
 171
 131
 423
 58
 1,107
Noninterest expenses589
 404
 375
 450
 42
 1,860
Provision for income taxes137
 145
 104
 71
 34
(a)491
Net income (loss)$247
 $229
 $175
 $185
 $(93) $743
Net credit-related (recoveries) charge-offs$(1) $33
 $46
 $14
 $
 $92
            
Selected average balances:           
Assets$13,395
 $18,264
 $10,443
 $8,578
 $20,772
 $71,452
Loans12,677
 18,008
 9,969
 7,904
 
 48,558
Deposits21,823
 17,533
 9,625
 7,874
 403
 57,258
            
Statistical data:           
Return on average assets (b)1.09% 1.24% 1.61% 2.14% N/M
 1.04%
Efficiency ratio (c)59.84
 45.82
 64.30
 60.99
 N/M
 58.64
(dollar amounts in millions)Michigan California Texas 
Other
Markets
 
Finance
& Other
 Total
Year Ended December 31, 2016
Earnings summary:           
Net interest income (expense)$616
 $678
 $444
 $319
 $(260) $1,797
Provision for credit losses9
 21
 225
 (7) 
 248
Noninterest income320
 162
 129
 393
 47
 1,051
Noninterest expenses618
 435
 408
 446
 23
 1,930
Provision (benefit) for income taxes99
 138
 (21) 70
 (93) 193
Net income (loss)$210
 $246
 $(39) $203
 $(143) $477
Net credit-related charge-offs$9
 $26
 $118
 $4
 $
 $157
            
Selected average balances:           
Assets$13,105
 $18,012
 $11,101
 $9,062
 $20,463
 $71,743
Loans12,457
 17,731
 10,637
 8,171
 
 48,996
Deposits21,777
 17,438
 10,168
 8,005
 353
 57,741
            
Statistical data:           
Return on average assets (b)0.93% 1.33% (0.32)% 2.24% N/M
 0.67%
Efficiency ratio (c)65.65
 51.84
 70.93
 62.67
 N/M
 67.62
(a)Primarily reflected discrete tax items, including a benefit of $48 million in 2018 and a net charge of $72 million in 2017.
(b)Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity.
(c)Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding gains (losses) from securities and a derivative contract tied to the conversion rate of Visa Class B shares.
N/M – not meaningful

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries


NOTE 2423 - PARENT COMPANY FINANCIAL STATEMENTS
BALANCE SHEETS - COMERICA INCORPORATED
(in millions, except share data)  
December 3120212020
(recast)
Assets
Cash and due from subsidiary banks$1,105 $1,489 
Other short-term investments113 107 
Receivable due from subsidiary bank (a)150 — 
Investment in subsidiaries, principally banks8,278 8,215 
Premises and equipment1 
Accrued income and other assets265 329 
Total assets$9,912 $10,141 
Liabilities and Shareholders’ Equity
Medium- and long-term debt$1,736 $1,818 
Accrued expenses and other liabilities279 273 
Total liabilities2,015 2,091 
Fixed-rate reset non-cumulative perpetual preferred stock, series A, no par value, $100,000 liquidation preference per share:
Authorized - 4,000 shares
Issued - 4,000 shares394 394 
Common stock - $5 par value:
Authorized - 325,000,000 shares
Issued - 228,164,824 shares1,141 1,141 
Capital surplus2,175 2,185 
Accumulated other comprehensive (loss) income (b)(212)64 
Retained earnings (b)10,494 9,727 
Less cost of common stock in treasury - 97,476,872 shares at 12/31/2021 and 88,997,430 shares at 12/31/2020(6,095)(5,461)
Total shareholders’ equity7,897 8,050 
Total liabilities and shareholders’ equity$9,912 $10,141 
(in millions, except share data)   
December 312018 2017
Assets   
Cash and due from subsidiary bank$1,524
 $1,059
Other short-term investments88
 92
Investment in subsidiaries, principally banks7,429
 7,467
Premises and equipment1
 2
Other assets169
 127
Total assets$9,211
 $8,747
Liabilities and Shareholders’ Equity   
Medium- and long-term debt$1,459
 $602
Other liabilities245
 182
Total liabilities1,704
 784
Common stock - $5 par value:   
Authorized - 325,000,000 shares   
Issued - 228,164,824 shares1,141
 1,141
Capital surplus2,148
 2,122
Accumulated other comprehensive loss(609) (451)
Retained earnings8,781
 7,887
Less cost of common stock in treasury - 68,081,176 shares at 12/31/18 and 55,306,483 shares at 12/31/17(3,954) (2,736)
Total shareholders’ equity7,507
 7,963
Total liabilities and shareholders’ equity$9,211
 $8,747
(a)In third quarter 2021 the Corporation issued a $150 million loan to Comerica Bank that, after an initial term of 13 months, will automatically extend at the end of each month to roll into a new 13 month plus one day term.
STATEMENTS OF INCOME - COMERICA INCORPORATED(b)Balances for the year ended December 31, 2020 have been recast to reflect the retrospective application of the Corporation's election to change the accounting method for certain components of the qualified defined benefit pension plan as of January 1, 2021. Refer to Note 1 for further information.

F-99
(in millions)     
Years Ended December 312018 2017 2016
Income     
Income from subsidiaries:     
Dividends from subsidiaries$1,135
 $915
 $549
Other interest income13
 3
 1
Intercompany management fees228
 136
 138
Other noninterest income
 8
 3
Total income1,376
 1,062
 691
Expenses     
Interest on medium- and long-term debt29
 13
 10
Salaries and benefits expense140
 127
 114
Net occupancy expense5
 5
 5
Equipment expense1
 1
 1
Restructuring charges2
 6
 33
Other noninterest expenses75
 80
 72
Total expenses252
 232
 235
Income before benefit for income taxes and equity in undistributed earnings of subsidiaries1,124
 830
 456
Benefit for income taxes(5) (26) (28)
Income before equity in undistributed earnings of subsidiaries1,129
 856
 484
Equity in undistributed earnings of subsidiaries, principally banks106
 (113) (7)
Net income1,235
 743
 477
Less income allocated to participating securities8
 5
 4
Net income attributable to common shares$1,227
 $738
 $473

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries



STATEMENTS OF INCOME - COMERICA INCORPORATED
(in millions) 
Years Ended December 31202120202019
(recast)(recast)
Income
Income from subsidiaries:
Dividends from subsidiaries$849 $498 $1,229 
Other interest income1 20 
Intercompany management fees235 209 224 
Total income1,085 711 1,473 
Expenses
Interest on medium- and long-term debt20 30 56 
Salaries and benefits expense170 141 143 
Other noninterest expenses72 66 79 
Total expenses262 237 278 
Income before benefit for income taxes and equity in undistributed earnings (losses) of subsidiaries823 474 1,195 
Benefit for income taxes(6)(6)(9)
Income before equity in undistributed earnings (losses) of subsidiaries829 480 1,204 
Equity in undistributed earnings (losses) of subsidiaries,
 principally banks (a)
339 17 (2)
Net income1,168 497 1,202 
Less income allocated to participating securities5 
Preferred stock dividends23 13  
Net income attributable to common shares$1,140 $482 $1,195 
(a) Amounts for the years ended December 31, 2020 and December 31, 2019 have been recast to reflect the retrospective application of the     Corporation's election to change the accounting method for certain components of the qualified defined benefit pension plan as of January 1, 2021. Refer to Note 1 for further information.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries


STATEMENTS OF CASH FLOWS - COMERICA INCORPORATED
(in millions)   
Years Ended December 31202120202019
(recast)(recast)
Operating Activities
Net income$1,168 $497 $1,202 
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed (losses) earnings of subsidiaries, principally banks(339)(17)
Depreciation and amortization — 
Net periodic defined benefit cost5 
Share-based compensation expense19 11 15 
Benefit for deferred income taxes(2)(1)(2)
Other, net3 28 
Net cash provided by operating activities854 496 1,250 
Investing Activities
Advance to subsidiary bank(150)— — 
Capital transactions with subsidiaries (21)— 
Other, net(1)— 
Net cash used in investing activities(151)(19)— 
Financing Activities
Medium- and long-term debt:
Maturities — (350)
Issuances — 550 
Preferred Stock:
Issuances 394 — 
Cash dividends paid(23)(8)— 
 Common Stock:
Repurchases(729)(199)(1,394)
  Cash dividends paid(369)(375)(402)
  Issuances under employee stock plans34 18 
Net cash provided by (used in) financing activities(1,087)(184)(1,578)
Net increase (decrease) in cash and cash equivalents(384)293 (328)
Cash and cash equivalents at beginning of period1,489 1,196 1,524 
Cash and cash equivalents at end of period$1,105 $1,489 $1,196 
Interest paid$21 $33 $55 
F-101
(in millions)     
Years Ended December 312018 2017 2016
Operating Activities     
Net income$1,235
 $743
 $477
Adjustments to reconcile net income to net cash provided by operating activities:     
Undistributed earnings of subsidiaries, principally banks(106) 113
 7
Depreciation and amortization1
 1
 1
Net periodic defined benefit cost (credit)4
 (2) 1
Share-based compensation expense21
 16
 14
Benefit for deferred income taxes(1) (10) (3)
Other, net10
 59
 6
Net cash provided by operating activities1,164
 920
 503
Financing Activities     
Medium- and long-term debt:     
Issuances850
 
 
Common Stock:     
Repurchases(1,338) (560) (320)
Cash dividends paid(263) (180) (152)
Issuances of common stock under employee stock plans52
 118
 157
Net cash used in financing activities(699) (622) (315)
Net increase (decrease) in cash and cash equivalents465
 298
 188
Cash and cash equivalents at beginning of period1,059
 761
 573
Cash and cash equivalents at end of period$1,524
 $1,059
 $761
Interest paid$11
 $12
 $9
Income taxes recovered$(155) $(331) $(139)

Table of Contents
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 2524 - SUMMARY OF QUARTERLY FINANCIAL STATEMENTS (UNAUDITED)
The following quarterly information is unaudited. However, in the opinion of management, the information reflects all adjustments, which are necessary for the fair presentation of the results of operations, for the periods presented.
2021
(in millions, except per share data)Fourth
Quarter
Third
Quarter
Second
Quarter
First
Quarter
Interest income$474 $489 $479 $459 
Interest expense13 14 14 16 
Net interest income461 475 465 443 
Provision for credit losses(25)(42)(135)(182)
Noninterest income289 280 284 270 
Noninterest expenses486 465 463 447 
Provision for income taxes61 70 93 98 
Net income228 262 328 350 
Less:
Income allocated to participating securities1 1 2 1 
Preferred stock dividends6 6 5 6 
Net income attributable to common shares$221 $255 $321 $343 
Earnings per common share:
Basic$1.69 $1.92 $2.35 $2.46 
Diluted1.66 1.90 2.32 2.43 
Comprehensive income223 175 313 181 
2020
(in millions, except per share data)Fourth
Quarter
(Recast)
Third
Quarter
(Recast)
Second
Quarter
(Recast)
First
Quarter
(Recast)
Interest income$489 $484 $511 $609 
Interest expense20 26 40 96 
Net interest income469 458 471 513 
Provision for credit losses(17)138 411 
Net securities gains (losses)— — (1)
Noninterest income excluding net securities gains (losses)265 252 246 238 
Noninterest expenses (a)465 438 434 417 
Provision (benefit) for income taxes (a)65 50 28 (19)
Net income (loss) (a)221 217 118 (59)
Less:
Income allocated to participating securities— — 
Preferred stock dividends— — 
Net income (loss) attributable to common shares (a)$215 $209 $117 $(59)
Earnings (loss) per common share:
Basic (a)$1.54 $1.49 $0.85 $(0.42)
Diluted (a)1.53 1.48 0.84 (0.42)
Comprehensive income267 169 97 344 
(a)Recast to reflect the retrospective application of the Corporation's election to change the accounting methodology for certain components of defined pension benefit credit. Refer to Note 1 for further information.
F-102
 2018
(in millions, except per share data)
Fourth
Quarter
 
Third
Quarter
 
Second
Quarter
 
First
Quarter
Interest income$704
 $675
 $650
 $590
Interest expense90
 76
 60
 41
Net interest income614
 599
 590
 549
Provision for credit losses16
 
 (29) 12
Net securities (losses) gains
 (20) 
 1
Noninterest income excluding net securities losses250
 254
 248
 243
Noninterest expenses448
 452
 448
 446
Provision for income taxes90
 63
 93
 54
Net income310
 318
 326
 281
Less income allocated to participating securities2
 2
 2
 2
Net income attributable to common shares$308
 $316
 $324
 $279
Earnings per common share:       
Basic$1.91
 $1.89
 $1.90
 $1.62
Diluted1.88
 1.86
 1.87
 1.59
Comprehensive income312
 296
 290
 178

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries



 2017
(in millions, except per share data)
Fourth
Quarter
 
Third
Quarter
 
Second
Quarter
 
First
Quarter
Interest income$578
 $579
 $529
 $496
Interest expense33
 33
 29
 26
Net interest income545
 546
 500
 470
Provision for credit losses17
 24
 17
 16
Noninterest income285
 275
 276
 271
Noninterest expenses483
 463
 457
 457
Provision for income taxes218
 108
 99
 66
Net income112
 226
 203
 202
Less income allocated to participating securities
 2
 1
 2
Net income attributable to common shares$112
 $224
 $202
 $200
Earnings per common share:       
Basic$0.65
 $1.29
 $1.15
 $1.15
Diluted0.63
 1.26
 1.13
 1.11
Comprehensive income107
 228
 221
 206


F-100

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries


NOTE 2625 - REVENUE FROM CONTRACTS WITH CUSTOMERS
Revenue from contracts with customers comprises the noninterest income earned by the Corporation in exchange for services provided to customers. The following table presents the composition of revenue from contracts with customers, segregated from other sources of noninterest income, by business segment.
Commercial
Bank
Retail
Bank
Wealth ManagementFinance & OtherTotal
(in millions)
Year Ended December 31, 2021
Revenue from contracts with customers:
Card fees$250 $44 $4 $ $298 
Fiduciary income  231  231 
Service charges on deposit accounts136 54 5  195 
Commercial loan servicing fees (a)19    19 
Brokerage fees  14  14 
Other noninterest income (b)5 17 17  39 
Total revenue from contracts with customers410 115 271  796 
Other sources of noninterest income253 8 8 58 327 
Total noninterest income$663 $123 $279 $58 $1,123 
Year Ended December 31, 2020
Revenue from contracts with customers:
Card fees$229 $38 $$— $270 
Fiduciary income— — 209 — 209 
Service charges on deposit accounts128 52 — 185 
Commercial loan servicing fees (a)18 — — — 18 
Brokerage fees— — 21 — 21 
Other noninterest income (b)28 10 17  55 
Total revenue from contracts with customers403 100 255  758 
Other sources of noninterest income152 10 73 243 
Total noninterest income555 110 263 73 1,001 
Year Ended December 31, 2019
Revenue from contracts with customers:
Card fees$213 $40 $$— $257 
Fiduciary income— — 206 — 206 
Service charges on deposit accounts130 68 — 203 
Commercial loan servicing fees (a)18 — — — 18 
Brokerage fees— — 28 — 28 
Other noninterest income (b)11 18 — 37 
Total revenue from contracts with customers369 119 261 — 749 
Other sources of noninterest income186 13 53 261 
Total noninterest income$555 $132 $270 $53 $1,010 
          
 
Business
Bank
 
Retail
Bank
 Wealth Management Finance & Other Total
(in millions)
Year Ended December 31, 2018         
Revenue from contracts with customers:         
Card fees (a)$201
 $39
 $4
 $
 $244
Service charges on deposit accounts (a)134
 72
 5
 
 211
Fiduciary income
 
 206
 
 206
Commercial loan servicing fees (b)18
 
 
 
 18
Brokerage fees
 
 27
 
 27
Other noninterest income (c)12
 19
 17
 1
 49
Total revenue from contracts with customers365
 130
 259
 1
 755
Other sources of noninterest income182
 6
 7
 26
 221
Total noninterest income$547
 $136
 $266
 $27
 $976
          
Year Ended December 31, 2017         
Card fees$285
 $43
 $5
 $
 $333
Service charges on deposit accounts143
 79
 5
 
 227
Fiduciary income
 
 198
 
 198
Commercial lending fees84
 
 1
 
 85
Letter of credit fees44
 
 1
 
 45
Bank-owned life insurance
 
 
 43
 43
Foreign exchange income43
 
 2
 
 45
Brokerage fees
 
 23
 
 23
Other noninterest income40
 32
 20
 16
 108
Total noninterest income$639
 $154
 $255
 $59
 $1,107
          
Year Ended December 31, 2016         
Card fees$257
 $42
 $4
 $
 $303
Services charges on deposit accounts136
 79
 4
 
 219
Fiduciary income
 
 190
 
 190
Commercial lending fees90
 
 
 (1) 89
Letter of credit fees49
 
 1
 
 50
Bank-owned life insurance
 
 
 42
 42
Foreign exchange income39
 1
 2
 
 42
Brokerage fees
 
 19
 
 19
Other noninterest income37
 31
 23
 6
 97
Total noninterest income$608
 $153
 $243
 $47
 $1,051
(a)Included in commercial lending fees on the Consolidated Statements of Income.
(a)Adoption of Topic 606 resulted in a change in presentation which records certain costs in the same category as the associated revenues. The effect of this change was to reduce card fees by $140 million and service charges on deposit accounts by $5 million for the twelve months ended December 31, 2018. Refer to Note 1 for further information.
(b)Included in commercial lending fees on the Consolidated Statements of Income.
(c)Excludes derivative, warrant and other miscellaneous income.
(b)Excludes derivative, warrant and other miscellaneous income.
Adjustments to revenue during the yearyears ended December 31, 20182021, 2020 and 2019 for refunds or credits relating to prior periods were not significant.
Revenue from contracts with customers did not generate significant contract assets and liabilities.



F-103

Table of Contents
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 26 - LEASES
As a lessee, the Corporation has entered into operating leases for the majority of its real estate locations, primarily retail and office space. Total lease expense for the years ended December 31, 2021, 2020 and 2019 were as follows:
(in millions)
Years Ended December 31202120202019
Operating lease expense$65 $64 $64 
Variable lease expense15 16 19 
Less sublease income(1)(1)(2)
Total lease expense$79 $79 $81 
Supplemental balance sheet information related to leases is summarized as follows:
(dollar amounts in millions)
Years Ended December 31202120202019
Included in accrued income and other assets
Right-of-use (ROU) assets$317 $306 $329 
Included in accrued expenses and other liabilities
Operating lease liabilities356 344 367 
Weighted average discount rate3.33 %3.61 %3.78 %
Weighted average lease term in years8 
Supplemental cash flow information related to leases is summarized as follows:
(dollar amounts in millions)
Years Ended December 31202120202019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases$66 $65 $67 
ROU assets obtained in exchange for new lease liabilities64 28 49 
As of December 31, 2021, the contractual maturities of operating lease liabilities were as follows:
(in millions)
Years Ending December 31
2022$60 
202362 
202456 
202549 
202641 
Thereafter144 
Total contractual maturities412 
Less imputed interest(56)
Total operating lease liabilities$356 
As a lessor, the Corporation leases certain types of manufacturing and warehouse equipment as well as public and private transportation vehicles to its customers. The Corporation recognized lease-related revenue, primarily interest income from sales-type and direct financing leases of $12 million, $13 million and $14 million for the years ended December 31, 2021, 2020 and 2019, respectively. The Corporation's net investment in sales-type and direct financing leases was $464 million and $391 million at December 31, 2021 and 2020, respectively.
F-104

Table of Contents
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

As of December 31, 2021, the contractual maturities of sales-type and direct financing lease receivables were as follows:
(in millions)
Years Ending December 31
2022$123 
202376 
202477 
202586 
202644 
Thereafter15 
Total lease payments receivable421 
Unguaranteed residual values64 
Less deferred interest income(21)
Total lease receivables (a)$464 
(a)Excludes net investment in leveraged leases of $176 million.
F-105

Table of Contents
REPORT OF MANAGEMENT
The management of Comerica Incorporated (the Corporation) is responsible for the accompanying consolidated financial statements and all other financial information in this Annual Report. The consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles and include amounts which of necessity are based on management’s best estimates and judgments and give due consideration to materiality. The other financial information herein is consistent with that in the consolidated financial statements.
In meeting its responsibility for the reliability of the consolidated financial statements, management develops and maintains effective internal controls, including those over financial reporting, as defined in the Securities and Exchange Act of 1934, as amended. The Corporation’s internal control over financial reporting includes policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Corporation; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles, and that receipts and expenditures of the Corporation are made only in accordance with authorizations of management and directors of the Corporation; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Corporation’s assets that could have a material effect on the consolidated financial statements.
Management assessed, with participation of the Corporation’s Chief Executive Officer and Chief Financial Officer, internal control over financial reporting as it relates to the Corporation’s consolidated financial statements presented in conformity with U.S. generally accepted accounting principles as of December 31, 2018.2021. The assessment was based on criteria for effective internal control over financial reporting described in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). Based on this assessment, management determined that internal control over financial reporting is effective as it relates to the Corporation’s consolidated financial statements presented in conformity with U.S. generally accepted accounting principles as of December 31, 2018.2021.
Because of inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
The Corporation's internal control over financial reporting as of December 31, 20182021 has been audited by Ernst & Young LLP, an independent registered public accounting firm, as stated in their accompanying report.
The Corporation’s Board of Directors oversees management’s internal control over financial reporting and financial reporting responsibilities through its Audit Committee as well as various other committees. The Audit Committee, which consists of directors who are not officers or employees of the Corporation, meets regularly with management, internal audit and the independent public accountants to assure that the Audit Committee, management, internal auditors and the independent public accountants are carrying out their responsibilities, and to review auditing, internal control and financial reporting matters.
Ralph W. Babb Jr.Curtis C. FarmerMuneera S. CarrJames J. HerzogMauricio A. Ortiz
Chairman, President andExecutive Vice President andSeniorExecutive Vice President and
Chief Executive OfficerChief Financial OfficerChief Accounting Officer

F-106


Table of Contents
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Shareholders and the Board of Directors of Comerica Incorporated


Opinion on Internal Control over Financial Reporting
We have audited Comerica Incorporated and subsidiaries’ internal control over financial reporting as of December 31, 2018,2021, based on criteria established in Internal Control-IntegratedControl—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, Comerica Incorporated and subsidiaries (the Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2018,2021, based on the COSO criteria.


We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheets of the Company as of December 31, 20182021 and 2017,2020, and the related consolidated statements of income, comprehensive income, changes in shareholders' equity and cash flows for each of the three years in the period ended December 31, 2018,2021, and the related notes of the Company and our report dated February 12, 201916, 2022 expressed an unqualified opinion thereon.


Basis for Opinion
The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Report of Management. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.


We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.


Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.


Definition and Limitations of Internal Control over Financial Reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company;company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the Companycompany are being made only in accordance with authorizations of management and directors of the Company;company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the Company’scompany’s assets that could have a material effect on the financial statements.


Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
/s/ Ernst & Young LLP
Dallas, TX
February 12, 201916, 2022





F-107

Table of Contents
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


To the Shareholders and the Board of Directors of Comerica Incorporated

Opinion on the Financial Statements
We have audited the accompanying consolidated balance sheets of Comerica Incorporated and subsidiaries (the Company) as of December 31, 20182021 and 2017,2020, and the related consolidated statements of income, comprehensive income, changes in shareholders' equity and cash flows for each of the three years in the period ended December 31, 2018,2021, and the related notes (collectively referred to as the “financial“consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the consolidated financial position of the Company at December 31, 20182021 and 2017,2020, and the consolidated results of theirits operations and theirits cash flows for each of the three years in the period ended December 31, 2018,2021, in conformity with U.S. generally accepted accounting principles.


We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2018,2021, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated February 12, 201916, 2022, expressed an unqualified opinion thereon.

Change in Accounting Principle
As discussed in Note 1 to the consolidated financial statements, the Company has elected to change its method of calculating the expected returns on the fixed income securities and private placement assets held within the plan assets of its qualified defined benefit plan during the year ended December 31, 2021.
Adoption of New Accounting Standard
As discussed in Note 1 to the consolidated financial statements, the Company changed its method for accounting for credit losses in 2020.
Basis for Opinion
These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.


We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.
Critical Audit Matter
The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.
F-108

Table of Contents
Allowance for credit losses
Description of the Matter
The Company’s loan portfolio and the associated allowance for credit losses (ACL) were $49 billion and $618 million as of December 31, 2021, respectively. The allowance for credit losses represents management’s estimate of expected credit losses over the contractual life of the loan portfolio at the balance sheet date. The allowance for credit losses includes credit loss estimates for loans evaluated on an individual basis, such as for certain nonaccrual loans and TDR loans and collective loss estimates for homogeneous pools of loans with similar risk characteristics. The Company determines the allowance for homogeneous pools of loans with similar risk characteristics by applying loss factors to amortized cost balances over the remaining contractual life. Loss factors are based on estimated probability of default, set to a default horizon based on contractual life, and loss given default. Through the use of various models, historical estimates are calibrated to economic forecasts over the reasonable and supportable forecast period based on economic variables that statistically correlate with each of the probability of default and loss given default pools. Qualitative adjustments are then made to bring the allowance to the level management believes is appropriate based on factors that have not otherwise been fully accounted for in the quantitative analysis. Examples of these adjustments include 1) foresight risk, 2) input imprecision, and 3) model imprecision.

Auditing management’s estimate of the allowance for credit losses involved a high degree of subjectivity due to the highly judgmental nature of the expected loss models and the qualitative adjustments included in the ACL. Management applies significant judgment when selecting the expected loss models to be used to determine the allowance and the inputs used in those models as well as in applying qualitative adjustments. These determinations could have a significant effect on the ACL.
How We Addressed the Matter in Our Audit
We obtained an understanding of the Company’s process for establishing the ACL, including selection of the models, inputs used in the models, monitoring of the models, and the qualitative adjustments made to the ACL. We evaluated the design and tested the operating effectiveness of the controls over 1) determining the appropriateness of the models used to estimate quantitative components of the ACL, 2) validating the models used to estimate quantitative components of the ACL, 3) selecting the appropriate inputs and assumptions within the models, 4) monitoring of the models including the assessment of the output, 5) determining the appropriateness of the qualitative reserve methodology, including the identification and the assessment for the need for qualitative adjustments, 6) validating the relevance and reliability of data used to estimate the various components of the qualitative reserves, and 7) performing management’s review and approval of qualitative adjustments and model output.

To test the appropriateness of the models used by management to estimate quantitative components of the ACL, with the support of specialists, we evaluated the model methodology and model performance, and tested key modeling assumptions including the economic forecast used within the models. To test the qualitative adjustments, we evaluated the identification and measurement of the qualitative adjustments, including the basis for concluding an adjustment was warranted when considering the potential impact of foresight risk, input imprecision and model imprecision, evaluated the appropriateness of the data used by the Company to estimate the qualitative adjustments, recalculated the analyses used by management to determine the qualitative adjustments, and analyzed the changes in assumptions and components of the qualitative reserves relative to changes in the Company’s loan portfolio. For example, we evaluated the data and information utilized by management to estimate the qualitative adjustments by independently obtaining and comparing to historical loan data, third-party macroeconomic data, and peer bank data to assess the appropriateness of the information and to consider whether new or contradictory information existed.


/s/ Ernst & Young LLP


We have served as the Company’s auditor since 1992.
Dallas, TX
February 12, 201916, 2022




HISTORICAL REVIEW - AVERAGE BALANCE SHEETS
Comerica Incorporated and Subsidiaries
CONSOLIDATED FINANCIAL INFORMATION
F-109
(in millions)         
Years Ended December 312018 2017 2016 2015 2014
ASSETS         
Cash and due from banks$1,135
 $1,209
 $1,146
 $1,059
 $934
          
Interest-bearing deposits with banks4,700
 5,443
 5,099
 6,158
 5,513
Other short-term investments134
 92
 102
 106
 109
          
Investment securities11,810
 12,207
 12,348
 10,237
 9,350
          
Commercial loans30,534
 30,415
 31,062
 31,501
 29,715
Real estate construction loans3,155
 2,958
 2,508
 1,884
 1,909
Commercial mortgage loans9,131
 9,005
 8,981
 8,697
 8,706
Lease financing470
 509
 684
 783
 834
International loans1,021
 1,157
 1,367
 1,441
 1,376
Residential mortgage loans1,983
 1,989
 1,894
 1,878
 1,778
Consumer loans2,472
 2,525
 2,500
 2,444
 2,270
Total loans48,766
 48,558
 48,996
 48,628
 46,588
Less allowance for loan losses(695) (728) (730) (621) (601)
Net loans48,071
 47,830
 48,266
 48,007
 45,987
Accrued income and other assets4,874
 4,671
 4,782
 4,680
 4,443
Total assets$70,724
 $71,452
 $71,743
 $70,247
 $66,336
LIABILITIES AND SHAREHOLDERS’ EQUITY         
Noninterest-bearing deposits$29,241
 $31,013
 $29,751
 $28,087
 $25,019
          
Money market and interest-bearing checking deposits22,378
 21,585
 22,744
 24,073
 22,891
Savings deposits2,199
 2,133
 2,013
 1,841
 1,744
Customer certificates of deposit2,092
 2,471
 3,200
 4,209
 4,869
Foreign office time deposits25
 56
 33
 116
 261
Total interest-bearing deposits26,694
 26,245
 27,990
 30,239
 29,765
Total deposits55,935
 57,258
 57,741
 58,326
 54,784
Short-term borrowings62
 277
 138
 93
 200
Accrued expenses and other liabilities1,076
 996
 1,273
 1,389
 1,016
Medium- and long-term debt5,842
 4,969
 4,917
 2,905
 2,963
Total liabilities62,915
 63,500
 64,069
 62,713
 58,963
Total shareholders’ equity7,809
 7,952
 7,674
 7,534
 7,373
Total liabilities and shareholders’ equity$70,724
 $71,452
 $71,743
 $70,247
 $66,336


HISTORICAL REVIEW - STATEMENTS OF INCOME
Comerica Incorporated and Subsidiaries
CONSOLIDATED FINANCIAL INFORMATION

Table of Contents
(in millions, except per share data)         
Years Ended December 312018 2017 2016 2015 2014
INTEREST INCOME         
Interest and fees on loans$2,262
 $1,872
 $1,635
 $1,551
 $1,525
Interest on investment securities265
 250
 247
 216
 211
Interest on short-term investments92
 60
 27
 17
 14
Total interest income2,619
 2,182
 1,909
 1,784
 1,750
INTEREST EXPENSE         
Interest on deposits122
 42
 40
 43
 45
Interest on short-term borrowings1
 3
 
 
 
Interest on medium- and long-term debt144
 76
 72
 52
 50
Total interest expense267
 121
 112
 95
 95
Net interest income2,352
 2,061
 1,797
 1,689
 1,655
Provision for credit losses(1) 74
 248
 147
 27
Net interest income after provision for loan losses2,353
 1,987
 1,549
 1,542
 1,628
NONINTEREST INCOME         
Card fees244
 333
 303
 276
 81
Service charges on deposit accounts211
 227
 219
 223
 215
Fiduciary income206
 198
 190
 187
 180
Commercial lending fees85
 85
 89
 99
 98
Letter of credit fees40
 45
 50
 53
 57
Bank-owned life insurance39
 43
 42
 40
 39
Foreign exchange income47
 45
 42
 40
 40
Brokerage fees27
 23
 19
 17
 17
Net securities losses(19) 
 
 (2) 1
Other noninterest income96
 108
 97
 102
 129
Total noninterest income976
 1,107
 1,051
 1,035
 857
NONINTEREST EXPENSES         
Salaries and benefits expense1,009
 961
 989
 1,000
 972
Outside processing fee expense255
 366
 336
 318
 111
Net occupancy expense152
 154
 157
 159
 171
Equipment expense48
 45
 53
 53
 57
Restructuring charges53
 45
 93
 
 
Software expense125
 126
 119
 99
 95
FDIC insurance expense42
 51
 54
 37
 33
Advertising expense30
 28
 21
 24
 23
Litigation-related expenses
 

 

 (32) 4
Gain on debt redemption
 
 
 
 (32)
Other noninterest expenses80
 84
 108
 169
 181
Total noninterest expenses1,794
 1,860
 1,930
 1,827
 1,615
Income before income taxes1,535
 1,234
 670
 750
 870
Provision for income taxes300
 491
 193
 229
 277
NET INCOME$1,235
 $743
 $477
 $521
 $593
Less income allocated to participating securities8
 5
 4
 6
 7
Net income attributable to common shares$1,227
 $738
 $473
 $515
 $586
Earnings per common share:         
Basic$7.31
 $4.23
 $2.74
 $2.93
 $3.28
Diluted7.20
 4.14
 2.68
 2.84
 3.16
          
Comprehensive income1,076
 762
 523
 504
 572
          
Cash dividends declared on common stock309
 193
 154
 148
 143
Cash dividends declared per common share1.84
 1.09
 0.89
 0.83
 0.79

HISTORICAL REVIEW - STATISTICAL DATA
Comerica Incorporated and Subsidiaries
CONSOLIDATED FINANCIAL INFORMATION
Years Ended December 312018 2017 2016 2015 2014
Average Rates         
Interest-bearing deposits with banks1.94% 1.09% 0.51% 0.26% 0.26%
Other short-term investments0.96
 0.64
 0.61
 0.81
 0.54
          
Investment securities2.19
 2.05
 2.02
 2.13
 2.25
          
Commercial loans4.64
 3.82
 3.25
 3.06
 3.11
Real estate construction loans5.21
 4.18
 3.63
 3.48
 3.41
Commercial mortgage loans4.69
 3.97
 3.49
 3.41
 3.75
Lease financing3.82
 2.63
 2.64
 3.15
 2.30
International loans4.97
 4.07
 3.63
 3.58
 3.65
Residential mortgage loans3.77
 3.70
 3.76
 3.77
 3.82
Consumer loans4.41
 3.70
 3.32
 3.26
 3.20
Total loans4.64
 3.85
 3.34
 3.19
 3.27
Interest income as a percentage of earning assets3.99
 3.29
 2.88
 2.75
 2.85
          
Domestic deposits0.45
 0.16
 0.14
 0.14
 0.14
Deposits in foreign offices1.19
 0.64
 0.35
 1.02
 0.82
Total interest-bearing deposits0.46
 0.16
 0.14
 0.14
 0.15
Short-term borrowings1.90
 1.14
 0.45
 0.05
 0.03
Medium- and long-term debt2.42
 1.51
 1.45
 1.80
 1.68
Interest expense as a percentage of interest-bearing sources0.82
 0.38
 0.34
 0.29
 0.29
Interest rate spread3.17
 2.91
 2.54
 2.46
 2.56
Impact of net noninterest-bearing sources of funds0.41
 0.20
 0.17
 0.14
 0.13
Net interest margin as a percentage of earning assets3.58% 3.11% 2.71% 2.60% 2.69%
          
Ratios         
Return on average common shareholders’ equity15.82% 9.34% 6.22% 6.91% 8.05%
Return on average assets1.75
 1.04
 0.67
 0.74
 0.89
Efficiency ratio (a)53.56
 58.64
 67.62
 67.03
 64.26
Common equity tier 1 capital as a percentage of risk weighted assets (b)11.14
 11.68
 11.09
 10.54
 n/a
Tier 1 capital as a percentage of risk-weighted assets (b)11.14
 11.68
 11.09
 10.54
 10.50
Total capital as a percentage of risk-weighted assets13.21
 13.84
 13.27
 12.69
 12.51
Common equity ratio10.60
 11.13
 10.68
 10.52
 10.70
Tangible common equity as a percentage of tangible assets (c)9.78
 10.32
 9.89
 9.70
 9.85
          
Per Common Share Data         
Book value at year-end$46.89
 $46.07
 $44.47
 $43.03
 $41.35
Market value at year-end68.69
 86.81
 68.11
 41.83
 46.84
Market value for the year         
High102.66
 88.22
 70.44
 53.45
 53.50
Low63.69
 64.04
 30.48
 39.52
 42.73
          
Other Data (share data in millions)         
Average common shares outstanding - basic168
 174
 172
 176
 179
Average common shares outstanding - diluted171
 178
 177
 181
 185
Number of banking centers436
 438
 458
 477
 481
Number of employees (full-time equivalent)7,865
 7,999
 7,960
 8,880
 8,876
(a)Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding net securities gains (losses) from securities and a derivative contract tied to the conversion rate of Visa Class B shares.
(b)Ratios calculated based on the risk-based capital requirements in effect at the time. The U.S. implementation of the Basel III regulatory capital framework became effective on January 1, 2015, with transitional provisions.
(c)See Supplemental Financial Data section for reconcilements of non-GAAP financial measures.
n/a - not applicable

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized as of February 12, 2019.
16, 2022.
COMERICA INCORPORATED
COMERICA INCORPORATEDBy:/s/ Curtis C. Farmer
By:/s/ Ralph W. Babb, Jr.
Ralph W. Babb, Jr.Curtis C. Farmer
Chairman, President and Chief Executive Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the registrant in the capacities indicated as of February 12, 2019.
16, 2022.
/s/ Curtis C. FarmerChairman, President and Chief Executive Officer and
Curtis C. FarmerDirector (Principal Executive Officer)
/s/ Ralph W. Babb, Jr.James J. HerzogChairman and Chief Executive Officer and
Ralph W. Babb, Jr.Director (Principal Executive Officer)
/s/ Muneera S. CarrExecutive Vice President and Chief Financial Officer
Muneera S. CarrJames J. Herzog(Principal Financial Officer)
/s/ Mauricio A. OrtizSeniorExecutive Vice President and Chief Accounting Officer
Mauricio A. Ortiz(Principal Accounting Officer)
/s/s Michael E. Collins
Michael E. CollinsDirector
/s/ Roger A. Cregg
Roger A. CreggDirector
/s/ T. Kevin DeNicola
T. Kevin DeNicolaDirector
/s/ Curtis C. FarmerNancy Flores
Curtis C. FarmerNancy FloresDirector
/s/ Jacqueline P. Kane
Jacqueline P. KaneDirector
/s/ Richard G. Lindner
 Richard G. LindnerDirector
/s/ Barbara R. Smith
Barbara R. SmithDirector
/s/ Robert S. Taubman
Robert S. TaubmanDirector
/s/ Reginald M. Turner, Jr.
Reginald M. Turner, Jr.Director
/s/ Nina G. Vaca
Nina G. VacaDirector
/s/ Michael G. Van de Ven
Michael G. Van de VenDirector


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