UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                -----------------

                                    FORM 10-Q

                Quarterly Report Pursuant to Section 13 or 15(d)
                     of the Securities Exchange Act of 1934

                  For the quarterly period ended June 30, 2005
                           Commission File No. 2-80070

                                -----------------

                         CASS INFORMATION SYSTEMS, INC.

                     Incorporated under the laws of MISSOURI
                  I.R.S. Employer Identification No. 43-1265338

                13001 HOLLENBERG DRIVE, BRIDGETON, MISSOURI 63044

                            Telephone: (314) 506-5500

                                -----------------

      Indicate by check mark whether the registrant 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, and has been subject to such filing
requirements for the past 90 days.

                                 Yes |X|   No |_|

      Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Exchange Act).

                                 Yes |X|   No |_|

      The number of shares outstanding of registrant's only class of stock as of
August 5, 2005: Common stock, par value $.50 per share - 3,685,594 shares
outstanding.

- --------------------------------------------------------------------------------
      This document constitutes part of a prospectus covering securities that
have been registered under the Securities Act of 1933.
- --------------------------------------------------------------------------------



                                TABLE OF CONTENTS

PART I - Financial Information

      Item 1. FINANCIAL STATEMENTS

            Consolidated Balance Sheets June 30, 2005 and December 31,
               2004 ........................................................   3

            Consolidated Statements of Income Three and six months ended
               June 30, 2005 and 2004 ......................................   4

            Consolidated Statements of Cash Flows Six months ended June
               30, 2005 and 2004 ...........................................   5

            Notes to Consolidated Financial Statements .....................   6

      Item 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
                 AND RESULTS OF OPERATIONS .................................  11

      Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK ...  23

      Item 4. CONTROLS AND PROCEDURES ......................................  23

PART II - Other Information - Items 1. - 6. ................................  23

      SIGNATURES ...........................................................  25

Forward-looking Statements - Factors That May Affect Future Results

This report may contain or incorporate by reference forward-looking statements
made pursuant to the safe harbor provisions of Section 27A of the Securities Act
of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as
amended. Forward-looking statements are not guarantees of future performance and
involve risks, uncertainties, and other factors which may cause future
performance to vary from expected performance summarized in the forward-looking
statements, including those set forth in this paragraph. Important factors that
could cause our actual results, performance, or achievements to be materially
different from any future results, performance, or achievements expressed or
implied by those statements include, but are not limited to: the failure to
successfully execute our corporate plan, the loss of key personnel or inability
to attract additional qualified personnel, the loss of key customers, increased
competition, the inability to remain current with rapid technological change,
risks related to acquisitions, risks associated with business cycles and
fluctuations in interest rates, utility and system interruptions or processing
errors, rules and regulations governing financial institutions and changes in
such rules and regulations, credit risk related to borrowers' ability to repay
loans, concentration of loans to certain segments such as commercial
enterprises, churches and borrowers in the St. Louis area which creates risks
associated with adverse factors that may affect these groups and volatility of
the price of our common stock. We undertake no obligation to publicly update or
revise any forward-looking statements to reflect changed assumptions, the
occurrence of anticipated or unanticipated events, or changes to future results
over time.


                                      -2-


PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

                 CASS INFORMATION SYSTEMS, INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
                                   (Unaudited)
             (Dollars in Thousands except Share and Per Share Data)



                                                                June 30     December 31
                                                                 2005          2004
                                                                       
Assets
Cash and due from banks                                        $  25,582     $  23,131
Federal funds sold and other short-term investments              117,950        64,412
                                                               ---------     ---------
     Cash and cash equivalents                                   143,532        87,543
                                                               ---------     ---------

Investment in debt and equity securities
     available-for-sale, at fair value                            64,124        77,130

Loans                                                            514,083       500,448
     Less: Allowance for loan losses                               6,009         6,037
                                                               ---------     ---------
           Loans, net                                            508,074       494,411
                                                               ---------     ---------
Premises and equipment, net                                       11,918        12,187
Investment in bank owned life insurance                           11,312        11,090
Payments in excess of funding                                      8,886         6,998
Goodwill                                                           7,357         7,360
Other intangible assets, net                                       2,141         2,383
Other assets                                                      17,416        17,419
                                                               ---------     ---------
           Total assets                                        $ 774,760     $ 716,521
                                                               =========     =========

Liabilities and Shareholders' Equity
Liabilities:
Deposits:
     Noninterest-bearing                                       $  99,478     $  96,362
     Interest-bearing                                            195,851       179,267
           Total deposits                                        295,329       275,629
Accounts and drafts payable                                      393,721       358,473
Short-term borrowings                                                193           127
Subordinated convertible debentures                                3,700         3,700
Other liabilities                                                  9,087         9,003
                                                               ---------     ---------
           Total liabilities                                     702,030       646,932
                                                               ---------     ---------

Shareholders' Equity:
Preferred stock, par value $.50 per share; 2,000,000
     shares authorized and no shares issued                           --            --
Common Stock, par value $.50 per share;
     20,000,000 shares authorized and 4,494,510
     shares issued at June 30, 2005 and
     December 31, 2004, respectively                               2,247         2,247
Additional paid-in capital                                        18,477        18,370
Retained earnings                                                 68,491        64,685
Common shares in treasury, at cost (813,384 shares at
     June 30, 2005 and 807,262 shares at December 31, 2004)      (16,473)      (16,096)
Unamortized stock bonus awards                                      (235)         (160)
Accumulated other comprehensive income                               223           543
                                                               ---------     ---------
           Total shareholders' equity                             72,730        69,589
                                                               ---------     ---------
              Total liabilities and shareholders' equity       $ 774,760     $ 716,521
                                                               =========     =========


See accompanying notes to unaudited consolidated financial statements.


                                      -3-


                 CASS INFORMATION SYSTEMS, INC. AND SUBSIDIARIES
                        CONSOLIDATED STATEMENTS OF INCOME
                                   (Unaudited)
             (Dollars in Thousands except Share and Per Share Data)



                                                           Three Months Ended            Six Months Ended
                                                                 June 30                     June 30
                                                         ------------------------    ------------------------
                                                            2005          2004         2005          2004
                                                                                       
Fee Revenue and Other Income:
Information services payment and processing revenue      $    8,737    $    7,621    $   17,329    $   15,219
Software revenue                                              1,920         1,134         3,600         2,313
Bank service fees                                               387           430           745           844
Gains on sales of investment securities                          --            --           547           441
Other                                                           159           177           343           312
                                                         ----------    ----------    ----------    ----------
         Total fee revenue and other income                  11,203         9,362        22,564        19,129
                                                         ----------    ----------    ----------    ----------

Interest Income:
Interest and fees on loans                                    7,936         6,432        15,362        12,886
Interest and dividends on debt and equity securities:
     Taxable                                                    202           116           375           213
     Exempt from federal income taxes                           329           465           722           892
Interest on federal funds sold and
     other short-term investments                               722           199         1,248           361
                                                         ----------    ----------    ----------    ----------
         Total interest income                                9,189         7,212        17,707        14,352
                                                         ----------    ----------    ----------    ----------

Interest Expense:
Interest on deposits                                          1,166           738         2,108         1,305
Interest on short-term borrowings                                 1            --             2            --
Interest on subordinated convertible debentures                  49            --            98            --
                                                         ----------    ----------    ----------    ----------
     Total interest expense                                   1,216           738         2,208         1,305
                                                         ----------    ----------    ----------    ----------
         Net interest income                                  7,973         6,474        15,499        13,047
Provision for loan losses                                       200           150           400           350
                                                         ----------    ----------    ----------    ----------
         Net interest income after provision
           for loan losses                                    7,773         6,324        15,099        12,697
                                                         ----------    ----------    ----------    ----------

Operating Expense:
Salaries and employee benefits                               10,610         9,301        20,954        18,458
Occupancy                                                       571           436         1,071           894
Equipment                                                       830           986         1,667         2,011
Amortization of intangible assets                               121            77           242           155
Other operating                                               2,866         2,513         5,606         5,277
                                                         ----------    ----------    ----------    ----------
     Total operating expense                                 14,998        13,313        29,540        26,795
                                                         ----------    ----------    ----------    ----------
         Income before income tax expense                     3,978         2,373         8,123         5,031
Income tax expense                                            1,394           673         2,772         1,484
                                                         ----------    ----------    ----------    ----------
         Net income                                      $    2,584    $    1,700    $    5,351    $    3,547
                                                         ==========    ==========    ==========    ==========

Earnings per share:
         Basic                                           $      .71    $      .47    $     1.46    $      .97
         Diluted                                         $      .68    $      .45    $     1.42    $      .95

Weighted average shares outstanding:
         Basic                                            3,670,868     3,674,409     3,672,698     3,671,401
         Effect of dilutive stock options,awards
           and debentures                                   126,906        51,490       124,696        45,758
         Diluted                                          3,797,774     3,725,899     3,797,394     3,717,159


See accompanying notes to unaudited consolidated financial statements.


                                      -4-


                 CASS INFORMATION SYSTEMS, INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (Unaudited)
                             (Dollars in Thousands)



                                                                     Six Months Ended
                                                                          June 30
                                                                  -----------------------
                                                                    2005          2004
                                                                          
Cash Flows From Operating Activities:
Net income                                                        $   5,351     $   3,547
Adjustments to reconcile net income to net cash provided
     by operating activities:
         Depreciation and amortization                                1,427         2,071
         Gains on sales of investment securities                       (547)         (441)
         Provision for loan losses                                      400           350
         Amortization of stock bonus awards                              63            45
         Deferred income tax benefit                                   (252)       (1,287)
         Decrease in income tax liability                              (973)         (689)
         Increase in pension liability                                  774           697
         Increase in payments in excess of funding                   (1,888)       (1,960)
         Change in other assets                                         203           896
         Change in other liabilities                                    282           188
                                                                  ---------     ---------
         Net cash provided by operating activities                    4,840         3,417
                                                                  ---------     ---------

Cash Flows From Investing Activities:
Proceeds from sales of debt securities available-for-sale            12,952        12,052
Proceeds from maturities of debt and equity securities
available-for-sale                                                   38,000         9,200
Purchase of debt and equity securities available-for-sale           (37,865)      (41,247)
Net increase in loans                                               (14,063)       (5,894)
Purchases of premises and equipment, net                               (936)         (836)
                                                                  ---------     ---------
         Net cash used in investing activities                       (1,912)      (26,725)
                                                                  ---------     ---------

Cash Flows From Financing Activities:
Net increase (decrease) in noninterest-bearing demand deposits        3,116       (11,646)
Net increase in interest-bearing demand and savings deposits          7,115        24,063
Net increase in time deposits                                         9,469        12,855
Net increase in accounts and drafts payable                          35,248        22,004
Net increase (decrease) in short-term borrowings                         66           (16)
Cash proceeds from exercise of stock options                            134           151
Tax benefit from exercise of stock options and bonuses                   44            99
Cash paid for stock dividend fractional shares                           --            (4)
Cash dividends paid                                                  (1,545)       (1,476)
Purchase of common shares for treasury                                 (586)           --
                                                                  ---------     ---------
         Net cash provided by financing activities                   53,061        46,030
                                                                  ---------     ---------
Net increase in cash and cash equivalents                            55,989        22,722
Cash and cash equivalents at beginning of period                     87,543        62,367
                                                                  ---------     ---------
Cash and cash equivalents at end of period                        $ 143,532     $  85,089
                                                                  =========     =========

Supplemental information:

         Cash paid for interest                                   $   2,036     $   1,238
         Cash paid for income taxes                               $   3,396         2,658
         Transfer of loans to other real estate owned                    --           375


See accompanying notes to unaudited consolidated financial statements.


                                      -5-


                 CASS INFORMATION SYSTEMS, INC. AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Unaudited)

Note 1 - Basis of Presentation

The accompanying unaudited consolidated financial statements have been prepared
in accordance with U.S. generally accepted accounting principles for interim
financial information and with the instructions to Form 10-Q and Rule 10-01 of
Regulation S-X. Accordingly, they do not include all of the information and
footnotes required by U.S. generally accepted accounting principles for complete
financial statements. In the opinion of management all adjustments, consisting
of normal recurring accruals, considered necessary for a fair presentation have
been included. Certain amounts in the 2004 consolidated financial statements
have been reclassified to conform to the 2005 presentation. Such
reclassifications have no effect on previously reported net income or
shareholders' equity. For further information, refer to the audited consolidated
financial statements and related footnotes included in Cass Information System,
Inc.'s ("the Company" or "Cass") Annual Report on Form 10-K for the year ended
December 31, 2004.

Note 2 - Intangible Assets

The Company accounts for intangible assets in accordance with SFAS 142,
"Goodwill and Other Intangible Assets," which requires that intangibles with
indefinite useful lives be tested annually for impairment and those with finite
useful lives be amortized over their useful lives. Intangible assets for the
periods ended June 30, 2005 and December 31, 2004 are as follows:



                                             June 30, 2005                        December 31, 2004
===========================================================================================================
                                     Gross Carrying     Accumulated        Gross Carrying       Accumulated
(In Thousands)                           Amount        Amortization            Amount          Amortization
===========================================================================================================
                                                                                     
Amortized intangible assets:
   Customer list                        $   823          $  (137)             $   823            $  (110)
   Acquired software                      1,886             (784)               1,886               (569)
- -----------------------------------------------------------------------------------------------------------
       Total amortized intangibles        2,709             (921)               2,709               (679)
- -----------------------------------------------------------------------------------------------------------
Unamortized intangible assets:
   Goodwill                               7,584             (227)*              7,587               (227)*
   Minimum pension liability                353               --                  353                 --
- -----------------------------------------------------------------------------------------------------------
       Total unamortized intangibles      7,937             (227)               7,940               (227)
- -----------------------------------------------------------------------------------------------------------
Total intangible assets                 $10,646          $(1,148)             $10,649            $  (906)
- -----------------------------------------------------------------------------------------------------------


*Amortization through December 31, 2001 prior to adoption of SFAS 142.

Customer list and software are amortized over 15 years and 4-5 years,
respectively. The minimum pension liability was recorded in accordance with SFAS
87, "Employers' Accounting for Pensions", which requires the Company to record
an additional minimum pension liability by the amount of which the accumulated
benefit obligation exceeds the sum of the fair value of plan assets and accrued
amount previously recorded and offset this liability by an intangible asset to
the extent of previously unrecognized prior service costs. The liability and
corresponding intangible asset are adjusted annually.

Amortization of intangible assets amounted to $121,000 and $77,000 for the
three-month periods and $242,000, and $155,000 for the six-month periods ended
June 30, 2005 and 2004, respectively. Estimated amortization of intangibles over
the next five years is as follows: $483,000 in 2005 and 2006, $227,000 for 2007
and 2008 and $170,000 in 2009.

Note 3 - Equity Investments in Non-Marketable Securities

The Company has invested $3,100,000 in a private imaging company in return for a
19.99% ownership interest. The remaining 80.01% ownership interest is owned by
another investor. In addition, the Company has extended a $4,000,000 secured
line of credit for working capital purposes to this entity. A 50% interest in
any borrowings under this line of credit has been sold to the other investor. As
of June 30, 2005 the Company's interest in borrowings under this line amounted
to $1,602,000 and all payments are current.

This business has performed poorly during the past few years and the majority
owner is currently in the process of improving its marketing focus and financial
performance. However, should this business fail to meet its objectives, the
Company's investment could be subject to future impairment.


                                      -6-


This investment, along with $493,000 of other investments in non-marketable
securities, is included in other assets on the Company's consolidated balance
sheets.

Note 4 - Earnings Per Share

Basic earnings per share is computed by dividing net income by the
weighted-average number of common shares outstanding. Diluted earnings per share
is computed by dividing net income, adjusted for the net income effect of the
interest expense on the outstanding convertible debentures, by the sum of the
weighted-average number of common shares outstanding and the weighted-average
number of potential common shares outstanding. The calculations of basic and
diluted earnings per share for the periods ended June 30, 2005 and 2004 are as
follows:



                                                              Three Months Ended           Six Months Ended
                                                                   June 30                     June 30
                                                           ------------------------    ------------------------
(Dollars In Thousands)                                        2005          2004          2005          2004
===============================================================================================================
                                                                                         
Calculation of basic earnings per share:
   Net income                                              $    2,584    $    1,700    $    5,351    $    3,547
   Weighted-average number of common shares outstanding     3,670,868     3,674,409     3,672,698     3,671,401
- ---------------------------------------------------------------------------------------------------------------
     Basic earnings per share                              $      .71    $      .47    $     1.46    $      .97
===============================================================================================================
Calculation of diluted earnings per share:
   Net income                                              $    2,584    $    1,700    $    5,351    $    3,547
   Net income effect of 5.33% convertible debentures               27            --            54            --
- ---------------------------------------------------------------------------------------------------------------
   Net income assuming dilution                            $    2,611    $    1,700    $    5,405    $    3,547
- ---------------------------------------------------------------------------------------------------------------
   Weighted-average number of common shares outstanding     3,670,868     3,674,409     3,672,698     3,671,401
     Effect of dilutive stock options and awards               50,143        51,490        47,933        45,758
     Effect of 5.33% convertible debentures                    76,763            --        76,763            --
- ---------------------------------------------------------------------------------------------------------------
   Weighted-average number of common shares
     assuming dilution                                      3,797,774     3,725,899     3,797,394     3,717,159
- ---------------------------------------------------------------------------------------------------------------
     Diluted earning per share                             $      .68    $      .45    $     1.42    $      .95
===============================================================================================================


Note 5 - Stock Repurchases

The following table sets forth information about the Company's purchases of its
$.50 par value Common Stock, its only class of stock registered pursuant to
Section 12 of the Exchange Act.



                                                              Total Number of        Maximum
                                                             Shares Purchased      Number that
                              Total Number     Average      As part of Publicly    May Yet Be
                                of Shares     Price Paid         Announced       Purchased Under
Period                          Purchased     per Share           Program          the Program
- ------------------------------------------------------------------------------------------------
                                                                         
January 1-31, 2005                1,545          $34.98             1,545            98,455
February 1 -28, 2005             15,000           35.49            15,000            83,455
March 1-31, 2005                     --              --                --            83,455
April 1-30, 2005                     --              --                --            83,455
May 1-31, 2005                       --              --                --            83,455
June 1-30, 2005                      --              --                --            83,455
- ------------------------------------------------------------------------------------------------
         Total                   16,545          $35.44            16,545            83,455
- ------------------------------------------------------------------------------------------------


The Company maintains a treasury stock buyback program and repurchases are made
in the open market or through negotiated transactions from time to time
depending on market conditions. The Company did not repurchase any stock during
the six months ended June 30, 2004.

Note 6 - Comprehensive Income

For the three and six month periods ended June 30, 2005 and 2004, unrealized
gains and losses on debt and equity securities available-for-sale were the
Company's only other comprehensive income component. Comprehensive income for
the three and six month periods ended June 30, 2005 and 2004 is summarized as
follows:


                                      -7-




                                                                 Three Months Ended      Six Months Ended
                                                                      June 30                June 30
                                                                 ------------------     -------------------
(In Thousands)                                                    2005       2004        2005        2004
- -----------------------------------------------------------------------------------------------------------
                                                                                        
Net Income                                                       $ 2,584    $ 1,700     $ 5,351     $ 3,547

Other comprehensive income:

     Net unrealized gain (loss) on debt and equity
       securities available-for-sale, net of tax                     185     (1,579)         41      (1,027)

     Less: reclassification adjustment for realized gains on
       sales of debt and equity securities,
       available-for-sale, included in net income, net of tax         --         --        (361)       (291)
- -----------------------------------------------------------------------------------------------------------
       Total other comprehensive income (loss)                       185     (1,579)       (320)     (1,318)
- -----------------------------------------------------------------------------------------------------------
         Total comprehensive income                              $ 2,769    $   121     $ 5,031     $ 2,229
- -----------------------------------------------------------------------------------------------------------


Note 7 - Industry Segment Information

The services provided by the Company are classified into three reportable
segments: Information Services, Banking Services and Government Software
Services. Each of these segments provides distinct services that are marketed
through different channels. They are managed separately due to their unique
service, processing and capital requirements.

The Information Services segment provides freight, utility and telecommunication
invoice processing and payment services to large corporations. The Banking
Services segment provides banking services primarily to privately-held
businesses and churches. The Government Software Services segment provides
integrated financial, property and human resource management systems to cities,
counties, and other public entities.

The Company's accounting policies for segments are the same as those described
in the summary of significant accounting policies in the Company's Annual Report
on Form 10-K for the year ended December 31, 2004. Management evaluates segment
performance based on net income after allocations for corporate expenses and
income taxes. Transactions between segments are accounted for at what management
believes to be market value. Information for prior periods has been restated to
reflect changes in the composition of the Company's segments.

All revenue originates from and all long-lived assets are located within the
United States and no revenue from any customer of any segment exceeds 10% of the
Company's consolidated revenue.

Summarized information about the Company's operations in each industry segment
for the three and six month periods ended June 30, 2005 and 2004, is as follows:


                                      -8-




                                                                            Government       Corporate
                                        Information        Banking           Software           And
In Thousands)                             Services         Services          Services       Eliminations         Total
- ------------------------------------------------------------------------------------------------------------------------
                                                                                                 
Quarter Ended June 30, 2005
     Total Revenues:
       Revenue from customers             $ 13,486         $  3,570         $  1,920          $     --          $ 18,976
       Intersegment revenue                     14              429               --              (443)               --
     Net Income (Loss)                       1,564            1,046              (26)               --             2,584
     Total Assets                          437,570          338,698            5,203            (6,711)          774,760
     Goodwill                                4,262              168            2,927                --             7,357
     Other intangibles, net                    718               --            1,070               353             2,141

Quarter Ended June 30, 2004
     Total Revenues:
       Revenue from customers             $ 11,459         $  3,093         $  1,134          $     --            15,686
     Intersegment revenue                        9              355               --              (364)               --
     Net Income (Loss)                       1,489              862             (651)               --             1,700
     Total Assets                          359,983          334,260            5,980            (3,881)          696,342
     Goodwill                                  223               --            2,927                --             3,150
     Other intangibles, net                     --               --            1,380               404             1,784

- ------------------------------------------------------------------------------------------------------------------------
Six Months Ended June 30, 2005
     Total Revenues:
       Revenue from customers             $ 26,974         $  7,089         $  3,600          $     --          $ 37,663
       Intersegment revenue                     40              780               --              (820)               --
     Net Income (Loss)                       3,522            2,039             (210)               --             5,351
     Total Assets                          437,570          338,698            5,203            (6,711)          774,760
     Goodwill                                4,262              168            2,927                --             7,357
     Other intangible assets, net              718               --            1,070               353             2,141

Six Months Ended June 30, 2004
     Total Revenues:
       Revenue from customers             $ 23,250         $  6,263         $  2,313          $     --          $ 31,826
       Intersegment revenue                     28              710               --              (738)               --
     Net Income (Loss)                       2,903            1,721           (1,077)               --             3,547
     Total Assets                          359,983          334,260            5,980            (3,881)          696,342
     Goodwill                                  223               --            2,927                --             3,150
     Other intangible assets, net               --               --            1,380               404             1,784
- ------------------------------------------------------------------------------------------------------------------------


Note 8 - Loans by Type

(In Thousands)                             June 30, 2005       December 31, 2004
- --------------------------------------------------------------------------------
Commercial and industrial                    $127,105              $117,777
Real estate:
   Mortgage                                   178,232               182,476
   Mortgage - churches & related              175,893               164,235
   Construction                                10,291                16,694
   Construction - churches & related           13,365                 9,144
Industrial revenue bonds                        4,860                 4,955
Installment                                     1,408                 1,741
Other                                           2,929                 3,426
- --------------------------------------------------------------------------------
Total loans                                  $514,083              $500,448
- --------------------------------------------------------------------------------

Note 9 - Commitments and Contingencies

In the normal course of business, the Company is party to activities that
contain credit, market and operational risks that are not reflected in whole or
in part in the Company's consolidated financial statements. Such activities
include traditional off-balance sheet credit-related financial instruments and
commitments under operating and capital leases. These financial instruments
include commitments to extend credit, commercial letters of credit and standby
letters of credit. The Company's maximum potential exposure to credit loss in
the event of nonperformance by the other party to the financial instrument for
commitments to extend credit, commercial letters of credit and standby letters
of credit is represented by the contractual amounts of those instruments. At
June 30, 2005, no amounts have been accrued for any estimated losses for these
instruments.

Commitments to extend credit are agreements to lend to a customer as long as
there is no violation of any condition established in the contract. Commercial
and standby letters of credit are conditional commitments issued by the Company
or its subsidiaries to guarantee the performance of a customer to a third party.
These off-balance sheet financial instruments generally have fixed expiration
dates or other termination clauses and may require payment of a fee. At June 30,
2005 the balance of unused loan commitments, standby and commercial letters of
credit were $26,064,000, $6,466,000, and $1,479,000, respectively. Since some of
the financial instruments may expire without being drawn upon, the total amounts
do not necessarily represent future cash requirements. Commitments to extend
credit and letters of credit are subject to the same underwriting standards as
those financial instruments included on the consolidated balance sheets. The
Company evaluates each customer's credit worthiness on a case-by-case basis. The
amount of collateral obtained, if deemed necessary upon extension of the credit,
is based on management's credit evaluation of the borrower. Collateral held
varies, but is generally accounts receivable, inventory, residential or
income-producing commercial property or equipment. In the event of
nonperformance, the Company or its subsidiaries may obtain and liquidate the
collateral to recover amounts paid under its guarantees on these financial
instruments.


                                      -9-


The following table summarizes contractual cash obligations of the Company
related to operating and capital lease commitments and convertible subordinated
debentures at June 30, 2005:



                                           Amount of Commitment Expiration per Period
                                           ------------------------------------------
                                                 Less than       1-3        3-5      Over 5
(Dollars in thousands)                Total       1 Year        Years      Years      Years
- -------------------------------------------------------------------------------------------
                                                                      
Operating lease commitments           $3,991         $682      $1,002       $667     $1,640
Capital lease commitments                 16           14           2         --         --
Convertible subordinated debentures*   3,700                       --         --      3,700
- -------------------------------------------------------------------------------------------
     Total                            $7,707         $696      $1,004       $667     $5,340
- -------------------------------------------------------------------------------------------


* Includes principal payments only.

The Company and its subsidiaries are involved in various pending legal actions
and proceedings in which claims for damages are asserted. Management, after
discussion with legal counsel, believes the ultimate resolution of these legal
actions and proceedings will not have a material effect upon the Company's
consolidated financial position or results of operations.

Note 10 - Stock-Based Compensation

The Company maintains stock bonus and stock option plans. Upon issuance of
shares in the stock bonus plan a contra shareholders' equity amount is recorded
for the fair value of the shares at the time of issuance and this amount is
amortized to expense over the three-year vesting period. The stock option plan
is accounted for under APB 25, "Accounting for Stock Issued to Employees", and
accordingly the Company recognizes no compensation expense as the price of the
Company's employee stock options equals the market price of the underlying stock
on the date of grant. The Company elected not to adopt the recognition
provisions of SFAS 123, "Accounting for Stock-Based Compensation", as amended.
An entity that continues to apply APB 25 must disclose certain pro forma
information as if the fair value-based accounting method in SFAS 123 had been
used to account for all stock-based compensation costs. The required disclosure
provisions of SFAS 123 are provided in the table below. The Company uses the
Black-Scholes option-pricing model to determine the fair value of the stock
options at the date of grant. There were no options granted in the Second
Quarter of 2005 and 2,759 options granted in the Second Quarter of 2004. There
were 5,885 options granted in the First Half of 2005 and 8,630 options granted
in the First Half of 2004. The following table represents the effect on basic
and diluted earnings per share and weighted average assumptions used for the
periods ended June 30, 2005 and 2004:



                                                                Three Months Ended                       Six Months Ended
                                                                     June 30                                  June 30
                                                           ----------------------------           -----------------------------
(In Thousands, except per share data)                         2005               2004                2005                2004
- --------------------------------------------------------------------------------------------------------------------------------
                                                                                                           
 Net income:
    As reported                                            $    2,584          $   1,700           $   5,351           $   3,547
       Add: Stock based compensation expense
       included in reported net income, net of tax                 23                 16                  41                  29
     Less: Stock based compensation expense
       determined under the fair value based method
       for all awards, net of tax                                 (28)               (23)                (52)                (43)
- --------------------------------------------------------------------------------------------------------------------------------
Pro forma net income                                        $   2,579          $   1,693           $   5,340           $   3,533
- --------------------------------------------------------------------------------------------------------------------------------
     Net income per common share:
     Basic, as reported                                     $     .71          $     .47           $    1.46           $     .97
     Basic, proforma                                              .70                .46                1.45                 .96

     Diluted, as reported                                         .68                .45                1.42                 .95
     Diluted, proforma                                            .68                .45                1.42                 .95
- --------------------------------------------------------------------------------------------------------------------------------
Weighted average assumptions:
     Risk-free interest rate                                       --               4.11%               3.97%               3.58%
     Expected life                                                 --             7 yrs.              7 yrs.              7 yrs.
     Expected volatility                                           --                 15%                 15%                 15%
     Dividend yield                                                --               2.34%               2.32%               2.46%
- --------------------------------------------------------------------------------------------------------------------------------



                                      -10-


Note 11 - Defined Pension Plans

The Company has a noncontributory defined benefit pension plan, which covers
most of its employees. The Company accrues and makes contributions designed to
fund normal service costs on a current basis using the projected unit credit
with service proration method to amortize prior service costs arising from
improvements in pension benefits and qualifying service prior to the
establishment of the plan over a period of approximately 30 years. Disclosure
information is based on a measurement date of December 31 of the corresponding
year.

The following table represents the components of the net periodic pension costs
for 2004 and an estimate for 2005:

                                                        Estimated       Actual
      (In Thousands)                                      2005           2004
      -------------------------------------------------------------------------
      Service cost - benefits earned during the year     $ 1,292        $ 1,186
      Interest cost on projected benefit obligation        1,384          1,237
      Expected return on plan assets                      (1,399)        (1,233)
      Net amortization                                       109             60
      -------------------------------------------------------------------------
      Net periodic pension cost                          $ 1,386        $ 1,250
      -------------------------------------------------------------------------

Pension costs recorded to expense were $381,000 and $365,000 for the Second
Quarter of 2005 and 2004, respectively. Pension costs recorded to expense were
$693,000 and $625,000 for the First Half of 2005 and 2004, respectively. The
Company has not made any contribution to the plan during the six-month period
ended June 30, 2005, but expects to contribute approximately $1,360,000 in 2005.

In addition to the above funded benefit plan, the Company has an unfunded
supplemental executive retirement plan which covers key executives of the
Company. This is a noncontributory plan in which the Company and its
subsidiaries make accruals designed to fund normal service costs on a current
basis using the same method and criteria as its defined benefit plan. The
following table represents the components of the net periodic pension costs for
2004 and an estimate for 2005:

                                                            Estimated    Actual
      (In Thousands)                                          2005        2004
      -------------------------------------------------------------------------
      Service cost - benefits earned during the year         $ (34)       $ (57)
      Interest cost on projected benefit obligation            161          117
      Net amortization                                          62           50
      -------------------------------------------------------------------------
      Net periodic pension cost                              $ 189        $ 110
      -------------------------------------------------------------------------

Pension costs recorded to expense were $65,000 and $37,000 for the Second
Quarter of 2005 and 2004, respectively and were $95,000 and $73,000 for the
First Half of 2005 and 2004, respectively.

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

Overview

Cass Information Systems, Inc. (the "Company" or "Cass") provides payment and
information processing services to national manufacturing, distribution and
retail enterprises from its processing centers in St. Louis, Missouri, Columbus,
Ohio, Boston, Massachusetts and Greenville, South Carolina. The Company's
services include freight invoice rating, payment processing, auditing, and the
generation of cost accounting and transportation information. Cass also
processes and pays utility invoices, including electricity, gas and
telecommunications. The Company significantly enhanced its telecommunication
payment processing and audit capabilities with the acquisition of its Telecom
Information Services division located in Greenville, South Carolina in August
2004. Cass extracts, stores and presents information from freight, utility and
telecommunication invoices, assisting our customers' transportation, energy and
information technology managers in making decisions that will enable them to
improve operating performance. The Company receives data from multiple sources,
electronic and otherwise, and processes the data to accomplish the specific
operating requirements of its customers. It then provides the data in a central
repository for access and archiving. The data is finally transformed into
information through the Company's databases that allow client interaction as
required and provide Internet-based tools for analytical processing. The Company
also, through its St Louis, Missouri based bank subsidiary, Cass Commercial Bank
(the "Bank"), provides banking services in the St Louis metropolitan area and
other selected cities in the United States. The Company acquired Franklin
Bancorp located in Orange County, California in November 2004 and merged its
subsidiary bank, Franklin Bank of California into the Bank. This acquisition
will allow the company to establish branches in California to better serve
existing customers and expand the Bank's customer base. In addition to
supporting the Company's payment operations, the Bank also provides banking
services to its target markets, which include privately owned businesses and
churches and church-related ministries. The Company, through the Bank's
subsidiary, Government e-Management Solutions, Inc. ("GEMS"), also develops and
licenses integrated financial, property and human resource management systems to
the public sector.


                                      -11-


The specific payment and information processing services provided to each
customer are developed individually to meet each customer's specific
requirements. These requirements can vary greatly from customer to customer. In
addition, the degree of automation such as electronic data interchange ("EDI"),
imaging, and web-enhanced solutions varies greatly among customers and
industries. These factors combine so that pricing varies greatly among the
customer base. In general however, Cass is compensated for its processing
services through service fees and account balances that are generated during the
payment process. The amount, type and calculation of service fees vary greatly
by service offering, but generally follow the volume of transactions processed.
Interest income from the balances generated during the payment processing cycle
is affected by the amount of time Cass holds the funds prior to payment and the
dollar volume processed. Both the number of transactions processed and the
dollar volume processed are therefore key metrics followed by management. Other
factors will also influence revenue and profitability, such as changes in the
general level of interest rates which have a significant effect on net interest
income. The funds generated by these processing activities are invested in
overnight investments, investment grade securities and loans generated by the
Bank. The Bank earns most of its revenue from net interest income, or the
difference between the interest earned on its loans and investments and the
interest expense on its deposits. The Bank also assesses fees on other services
such as cash management services. GEMS earns most of its revenue from the
license of its enterprise software solutions and its installation and
maintenance services.

Industry-wide factors that impact the Company include the acceptance by large
corporations of the outsourcing of key business functions such as freight,
utility and telecommunication payment and audit. The benefits that can be
achieved by outsourcing transaction processing and the management information
generated by Cass' systems can be influenced by factors such as the competitive
pressures within industries to improve profitability, the general level of
transportation costs, deregulation of energy costs and consolidation of
telecommunication providers. Economic factors that impact the Company include
the general level of economic activity that can affect the volume and size of
invoices processed, the ability to hire and retain qualified staff and the
growth and quality of our loan portfolio. The general level of interest rates
has a significant effect on the revenue of the Company. Finally, the general
fiscal condition of the counties and municipalities that can benefit from GEMS'
enterprise software can impact licenses sold and related revenue.

Currently, management views Cass' most significant opportunity as the continued
expansion of its payment and information processing service offerings and
customer base. Management intends to accomplish this by maintaining the
Company's lead in applied technology, which, when combined with the security and
processing controls of the Bank, makes Cass unique in the industry. This trend
has been positive over the past years and management anticipates that this
should continue through 2005. The low level of interest rates has had a
significant negative impact on net income over the past few years. The general
level of interest rates, particularly short term interest rates, began to
increase during 2004 and this has had a positive effect on net interest income.
If these rates continue to rise, this positive impact on net interest income and
net earnings should continue. Management had been pleased prior to 2004 with the
growth in revenue generated by GEMS. However, during 2004 the sales of new
systems declined sharply due mainly to a sluggish marketplace. In the Second
Quarter and First Half of 2005, revenues for GEMS increased 69% or $786,000 and
56% or $1,287,000, respectively. The Company continues to invest in GEMS through
system improvements and product enhancements and anticipates that the remainder
of 2005 should continue to reflect improved results.

Critical Accounting Policies

The Company has prepared all of the consolidated financial information in this
report in accordance with U.S. generally accepted accounting principles ("U.S.
GAAP"). In preparing the consolidated financial statements in accordance with
U.S. GAAP, management makes estimates and assumptions that affect the reported
amount of assets and liabilities, disclosure of contingent assets and
liabilities at the date of the financial statements, and the reported amounts of
revenue and expenses during the reporting period. These estimates have been
generally accurate and consistent in the past and have not required any material
changes. There can be no assurances that actual results will not differ from
those estimates. Certain accounting policies that require significant management
estimates and are deemed critical to our results of operations or financial
position have been discussed with the Audit Committee of the Board of Directors
and are described below.


                                      -12-


Allowance for Loan Losses. The Company performs periodic and systematic detailed
reviews of its loan portfolio to assess overall collectability. The level of the
allowance for loan losses reflects management's estimate of the collectability
of the loan portfolio. Although these estimates are based on established
methodologies for determining allowance requirements, actual results can differ
significantly from estimated results. These policies affect all segments of the
Company with the exception of governmental software services. The impact and
associated risks related to these policies on our business operations are
discussed in the "Allowance and Provision for Loan Losses" section of this
report.

Impairment of Assets. Management periodically evaluates certain long-term assets
such as intangible assets including goodwill, foreclosed assets, internally
developed software and investments in private equity securities for impairment.
Generally, these assets are initially recorded at cost, and recognition of
impairment is required when events and circumstances indicate that the carrying
amounts of these assets will not be recoverable in the future. If impairment
occurs, various methods of measuring impairment may be called for depending on
the circumstances and type of asset, including quoted market prices, estimates
based on similar assets, and estimates based on valuation techniques such as
discounted projected cash flows. Assets held for sale are carried at the lower
of cost or fair value less costs to sell. These policies affect all segments of
the Company and require significant management assumptions and estimates that
could result in materially different results if conditions or underlying
circumstances change.

Results of Operations

The following paragraphs more fully discuss the results of operations and
changes in financial condition for the three-month period ended June 30, 2005
(the "Second Quarter of 2005") compared to the three-month period ended June 30,
2004 (the "Second Quarter of 2004") and the six-month period ended June 30, 2005
(the "First Half of 2005") compared to the six-month period ended June 30, 2004
(the "First Half of 2004"). The following discussion and analysis should be read
in conjunction with the consolidated financial statements and related notes and
with the statistical information and financial data appearing in this report as
well as the Company's 2004 Annual Report on Form 10-K. Results of operations for
the Second Quarter of 2005 are not necessarily indicative of the results to be
attained for any other period.

Net Income

The following table summarizes the Company's operating results:



                                                 Three Months Ended                                  Six Months Ended
                                                      June 30                                             June 30
                                   ------------------------------------------         ---------------------------------------------
                                                                         %                                                     %
                                      2005              2004           Change           2005                2004             Change
- -----------------------------------------------------------------------------         ---------------------------------------------
                                                                                                            
Net income (In thousands)          $    2,584        $    1,700         52.0%         $   5,351          $    3,547           50.9%
Diluted earnings per share         $      .68        $      .45         51.1%         $    1.42          $      .95           49.5%
Return on average assets                 1.37%              .99%          --               1.44%               1.06%            --
Return on average equity                14.65%            10.60%          --              15.39%              11.06%            --


Fee Revenue and Other Income

The Company's fee revenue is derived mainly from payment and processing fees. As
the Company provides its processing and payment services, it is compensated by
service fees which are typically calculated on a per-item basis and by the
accounts and drafts payable balances generated in the payment process which can
be used to generate interest income. Processing volumes related to fees and
accounts and drafts payable for the three and six-month periods ended June 30,
2005 and 2004 are as follows:



                                                 Three Months Ended                                  Six Months Ended
                                                      June 30                                             June 30
                                   ------------------------------------------         ---------------------------------------------
                                                                         %                                                     %
                                      2005              2004           Change           2005                2004             Change
- -----------------------------------------------------------------------------         ---------------------------------------------
                                                                                                            
Freight Transaction Volume              7,503             5,921         26.7%             14,635             11,350           28.9%
Freight Dollar Volume              $2,869,289        $2,416,168         18.8%         $5,437,379         $4,637,814           17.2%
Utility Transaction Volume              1,401             1,286          8.9%              2,804              2,570            9.1%
Utility Dollar Volume              $  989,180        $  895,730         10.4%         $2,018,415         $1,830,091           10.3%
Payment and processing fees        $    8,737        $    7,621         14.6%         $   17,329         $   15,219           13.9%



                                      -13-


Second Quarter of 2005 compared to Second Quarter of 2004:

Freight transaction volume and total dollar volume processed increased for the
Second Quarter of 2005 mainly due to increased activity from existing clients
and new accounts. The increase in volume and processing dollars from the Utility
Information Services division increased primarily due to new customers as the
growth of this segment continues. Fees for the period grew due to the increased
volume and additional services provided in both segments. Revenues from the
Telecom Information Services division, acquired in August 2004, were $504,000.

Software revenue from GEMS was up $786,000 or 69% primarily due to additional
licenses sold. Bank service fees decreased $43,000 or 10% primarily due to a
reduction in bank account analysis fees. This decrease was due primarily to the
fact that service fees decrease as the credit allowance for non-interest bearing
deposits increases with the general level of interest rates.

First Half of 2005 compared to First Half of 2004:

Freight and Utility transaction volume and dollar volume were up and fee revenue
increased for the First Half of 2005 compared to 2004 due to the same factors
discussed above for the Second Quarter. Revenues from the Telecom Information
Services division were $990,000.

Software revenue from GEMS was up $1,287,000 or 56% during the First Half of
2005 primarily due to additional licenses sold. Bank service fees decreased
$99,000 or 12% primarily due to a reduction in bank account analysis fees.

Net Interest Income

Net interest income is the difference between interest earned on loans,
investments, and other earning assets and interest expense on deposits and other
interest-bearing liabilities. Net interest income is a significant source of the
Company's revenues. The following table summarizes the changes in net interest
income and related factors for the three and six month periods ended June 30,
2005 compared with June 30, 2004:



                                                 Three Months Ended                                  Six Months Ended
                                                      June 30                                             June 30
                                   ------------------------------------------         ---------------------------------------------
                                                                         %                                                     %
                                      2005              2004           Change           2005                2004             Change
- -----------------------------------------------------------------------------         ---------------------------------------------
                                                                                                            
Average earning assets             $680,850          $  627,453          8.5%         $  672,765         $  613,338            9.7%
Net interest income*                 $8,185          $    6,749         21.3%             15,940         $   13,575           17.4%
Net interest margin                    4.82%               4.33%          --                4.78%              4.45%            --
Yield on earning assets                5.54%               4.80%          --                5.44%              4.88%            --
Rate on interest bearing
   liabilities                         2.43%               1.59%          --                2.26%              1.47%            --


*Net interest income is presented on a tax-equivalent basis assuming a tax rate
of 35%.

Second Quarter of 2005 compared to Second Quarter of 2004:

The increase in net interest income was primarily due to a significant increase
in earning assets and an increase in yields on earning assets that exceeded the
counteracting effect of increases in rates paid on deposit accounts. The
increase in earning assets was funded by both an increase in accounts and drafts
payable due to the increase in dollar volume processed and an increase in bank
deposits due to the expansion of the Bank's customer base. Yields on earning
assets and rates paid on deposit accounts both increased as the general level of
interest rates increased. However, as the balances of earning assets greatly
exceed the balances of interest-bearing deposits, the net effect on net interest
margin was positive.

Total average loans increased $47,228,000 or 10% to $514,520,000. This increase
was attributable to new business relationships and was funded by the increase in
accounts and drafts payable and growth in bank deposits. Total average
investment in debt and equity securities decreased $9,511,000 or 13% to
$63,659,000. Total average federal funds sold and other short-term investments
increased $15,680,000 or 18% to $102,671,000. This increase provides additional
liquidity to the Company for future loan growth or investment activity. For more
information on the changes in net interest income please refer to the tables on
the pages that follow.


                                      -14-


First Half of 2005 compared to First Half of 2004:

The increase in net interest income was primarily due to a significant increase
in earning assets and an increase in yields on earning assets that exceeded the
counteracting effect of increases in rates paid on deposit accounts. The
increase in earning assets was funded by both an increase in accounts and drafts
payable due to the increase in dollar volume processed and an increase in bank
deposits due to the expansion of the Bank's customer base. Yields on earning
assets and rates paid on deposit accounts both increased as the general level of
interest rates increased. However, as the balances of earning assets greatly
exceed the balances of interest-bearing deposits, the net effect on net interest
margin was positive.

Total average loans increased $42,980,000 or 9% to $508,355,000. As discussed
above this increase was attributable to new business relationships and was
funded by the increase in accounts and drafts payable and growth in bank
deposits. Total average investment in debt and equity securities decreased
$2,135,000 or 3% to $66,769,000. Total average federal funds sold and other
short-term investments increased $18,582,000 or 24% to $97,641,000. For more
information on the changes in net interest income please refer to the tables on
the pages that follow.

The Company is positively affected by increases in the level of interest rates
due to the fact that its rate sensitive assets significantly exceed its rate
sensitive liabilities. This is primarily due to the noninterest-bearing
liabilities generated by the Company in the form of accounts and drafts payable.
Changes in interest rates will affect some earning assets such as federal funds
sold and floating rate loans immediately and some earning assets, such as fixed
rate loans and municipal bonds, over time.

Distribution of Assets, Liabilities and Stockholders' Equity; Interest Rate and
Interest Differential

The following table shows the condensed average balance sheets for each of the
periods reported, the tax-equivalent interest income and expense on each
category of interest-earning assets and interest-bearing liabilities, and the
average yield on such categories of interest-earning assets and the average
rates paid on such categories of interest-bearing liabilities for each of the
periods reported.



                                                 Second Quarter 2005                       Second Quarter 2004
                                          ---------------------------------       -----------------------------------
                                                        Interest                                Interest
                                           Average       Income/     Yield/        Average       Income/       Yield/
(Dollars in thousands)                     Balance       Expense       Rate        Balance       Expense         Rate
- ---------------------------------------------------------------------------------------------------------------------
                                                                                               
Assets (1)
Earning assets:
     Loans (2),(3):
       Taxable                            $ 509,637     $   7,884      6.20%      $  461,990    $   6,366        5.54%
       Tax-exempt (4)                         4,883            80      6.57            5,302          100        7.59
Debt and equity securities (5):
       Taxable                               28,749           203      2.83           26,621          116        1.75
       Tax-exempt (4)                        34,910           512      5.88           46,549          705        6.09
   Federal funds sold and other
     short-term investments                 102,671           722      2.82           86,991          200         .92
- ---------------------------------------------------------------------------------------------------------------------
Total earning assets                        680,850         9,401      5.54          627,453        7,487        4.80
Nonearning assets:
   Cash and due from banks                   26,922                                   25,601
   Premises and equipment, net               11,902                                   13,108
   Bank owned life insurance                 11,239                                   10,829
   Goodwill and other intangibles             9,573                                    4,985
   Other assets                              23,238                                   21,487
   Allowance for loan losses                 (5,860)                                  (5,764)

- ---------------------------------------------------------------------------------------------------------------------
Total assets                              $ 757,864                               $  697,699
- ---------------------------------------------------------------------------------------------------------------------
Liabilities And Shareholders' Equity (1)
Interest-bearing liabilities:
   Interest-bearing demand
     deposits                             $  85,141     $     385      1.81%      $   64,755    $     165        1.02%
   Savings deposits                          24,468           101      1.66           29,507           77        1.05
   Time deposits of
     $100 or more                            46,259           360      3.12           55,083          304        2.22
   Other time deposits                       41,412           320      3.10           37,231          192        2.07
- ---------------------------------------------------------------------------------------------------------------------
Total interest-bearing deposits             197,280         1,166      2.37          186,576          738        1.59
   Short-term borrowings                        143             1      2.80               94           --          --
   Subordinated debentures                    3,700            49      5.31               --           --          --
- ---------------------------------------------------------------------------------------------------------------------
Total interest-bearing
   liabilities                              201,123         1,216      2.43          186,670          738        1.59
Noninterest-bearing liabilities:
   Demand deposits                           98,729                                  104,913
   Accounts and drafts payable              378,199                                  333,185
   Other liabilities                          9,040                                    8,422
- ---------------------------------------------------------------------------------------------------------------------

Total liabilities                           687,091                                  633,190
Shareholders' equity                         70,773                                   64,509
Total liabilities and
   shareholders' equity                   $ 757,864                               $  697,699
- ---------------------------------------------------------------------------------------------------------------------
Net interest income                                     $   8,185                               $   6,749
Interest spread                                                        3.11%                                     3.21%
Net interest margin                                                    4.82%                                     4.33%
- ---------------------------------------------------------------------------------------------------------------------


1.    Balances shown are daily averages.
2.    For purposes of these computations, nonaccrual loans are included in the
      average loan amounts outstanding. Interest on nonaccrual loans is recorded
      when received as discussed further in Note 1 to the Company's 2004
      Consolidated Financial Statements, filed with the Company's 2004 Annual
      Report on Form 10-K.
3.    Interest income on loans includes net loan fees of $32,000 and $49,000 for
      the Second Quarter of 2005 and 2004, respectively.
4.    Interest income is presented on a tax-equivalent basis assuming a tax rate
      of 35%. The tax-equivalent adjustment was approximately $212,000 and
      $275,000 for the Second Quarter of 2005 and 2004, respectively.
5.    For purposes of these computations, yields on investment securities are
      computed as interest income divided by the average amortized cost of the
      investments.

                                      -15-



                                                   First Half of 2005                      First Half of 2004
                                          ---------------------------------       -----------------------------------
                                                        Interest                                Interest
                                           Average       Income/     Yield/        Average       Income/       Yield/
(Dollars in thousands)                     Balance       Expense       Rate        Balance       Expense         Rate
- ---------------------------------------------------------------------------------------------------------------------
                                                                                               
Assets (1)
Earning assets:
     Loans (2),(3):
       Taxable                            $ 503,450     $  15,259      6.11%      $  460,052    $  12,753        5.57%
       Tax-exempt (4)                         4,905           158      6.50            5,323          201        7.59

Debt and equity securities (5):
       Taxable                               28,659           375      2.64           25,203          213        1.70
       Tax-exempt (4)                        38,110         1,108      5.86           43,701        1,351        6.22
   Federal funds sold and other
     short-term investments                  97,641         1,248      2.58           79,059          362         .92
- ---------------------------------------------------------------------------------------------------------------------
Total earning assets                        672,765        18,148      5.44          613,338       14,880        4.88
Nonearning assets:
   Cash and due from banks                   25,496                                   22,229
   Premises and equipment, net               11,994                                   13,291
   Bank owned life insurance                 11,184                                   10,790
   Goodwill and other intangibles             9,635                                    5,024
   Other assets                              23,387                                   21,237
   Allowance for loan losses                 (5,963)                                  (5,662)
- ---------------------------------------------------------------------------------------------------------------------
Total assets                                748,498                               $  680,247
- ---------------------------------------------------------------------------------------------------------------------
Liabilities And Shareholders' Equity (1)
Interest-bearing liabilities:
   Interest-bearing demand
     deposits                             $  84,601     $     716      1.71%      $   60,683    $     244         .81%
   Savings deposits                          24,091           185      1.55           29,947          128         .86
   Time deposits of
     $100 or more                            47,415           684      2.91           51,768          571        2.22
   Other time deposits                       36,819           523      2.86           35,951          362        2.02
- ---------------------------------------------------------------------------------------------------------------------
Total interest-bearing deposits             192,926         2,108      2.20          178,349        1,305        1.47
   Short-term borrowings                        182             2      2.22              106
   Subordinated debentures                    3,700            98      5.34               --           --          --
- ---------------------------------------------------------------------------------------------------------------------
Total interest-bearing
   liabilities                              196,808         2,208      2.26          178,455        1,305        1.47
Noninterest-bearing liabilities:
   Demand deposits                           98,043                                  102,675
   Accounts and drafts payable              374,447                                  326,248
   Other liabilities                          9,089                                    8,383
- ---------------------------------------------------------------------------------------------------------------------
Total liabilities                           678,387                                  615,761
Shareholders' equity                         70,111                                   64,486
Total liabilities and
   shareholders' equity                     748,498                               $  680,247
- ---------------------------------------------------------------------------------------------------------------------
Net interest income                                     $  15,940                               $  13,575
Interest spread                                                        3.18%                                     3.41%
Net interest margin                                                    4.78%                                     4.45%
- ---------------------------------------------------------------------------------------------------------------------


1.    Balances shown are daily averages.
2.    For purposes of these computations, nonaccrual loans are included in the
      average loan amounts outstanding. Interest on nonaccrual loans is recorded
      when received as discussed further in Note 1 to the Company's 2004
      Consolidated Financial Statements, filed with the Company's 2004 Annual
      Report on Form 10-K.
3.    Interest income on loans includes net loan fees of $68,000 and $90,000 for
      the First Half of 2005 and 2004, respectively.
4.    Interest income is presented on a tax-equivalent basis assuming a tax rate
      of 35%. The tax-equivalent adjustment was approximately $441,000 and
      $528,000 for the First Half of 2005 and 2004, respectively.
6.    For purposes of these computations, yields on investment securities are
      computed as interest income divided by the average amortized cost of the
      investments.


                                      -16-


                     Analysis of Net Interest Income Changes

The following table presents the changes in interest income and expense between
periods due to changes in volume and interest rates. That portion of the change
in interest attributable to the combined rate/volume variance has been allocated
to rate and volume changes in proportion to the absolute dollar amounts of the
change in each.

                                                         Second Quarter
                                                         2005 Over 2004
                                               --------------------------------
(In Thousands)                                  Volume        Rate       Total
- -------------------------------------------------------------------------------
Increase (decrease) in interest income:
   Loans (1), (2):
     Taxable                                   $   703     $    815     $ 1,518
     Tax-exempt (3)                                 (7)         (13)        (20)
   Debt and equity securities:
     Taxable                                        10           77          87
     Tax-exempt (3)                               (170)         (23)       (193)
   Federal funds sold and other
     short-term investments                         42          480         522
- -------------------------------------------------------------------------------
Total interest income                              578        1,336       1,914
- -------------------------------------------------------------------------------
Interest expense on:
   Interest-bearing demand deposits                 64          155         219
   Savings deposits                                (15)          39          24
   Time deposits of $100 or more                   (54)         110          56
   Other time deposits                              24          104         128
   Short-term borrowings                             0            1           1
   Subordinated debentures                          25           24          49
- -------------------------------------------------------------------------------
Total interest expense                              44          433         477
- -------------------------------------------------------------------------------
Net interest income                            $   534     $    903     $ 1,437
- -------------------------------------------------------------------------------
1.    Average balances include nonaccrual loans.
2.    Interest income includes net loan fees.
3.    Interest income is presented on a tax-equivalent basis assuming a tax rate
      of 35%.


                                      -17-


                                                          First Half
                                                         2005 Over 2004
                                               --------------------------------
(In Thousands)                                  Volume        Rate       Total
- -------------------------------------------------------------------------------
Increase (decrease) in interest income:
   Loans (1), (2):
     Taxable                                   $ 1,239     $  1,267     $ 2,506
     Tax-exempt (3)                                (15)         (28)        (43)
   Debt and equity securities:
     Taxable                                        32          130         162
     Tax-exempt (3)                               (168)         (75)       (243)
   Federal funds sold and other
     short-term investments                        102          784         886
- -------------------------------------------------------------------------------
Total interest income                            1,190        2,078       3,268
- -------------------------------------------------------------------------------
Interest expense on:
   Interest-bearing demand deposits                124          348         472
   Savings deposits                                (29)          86          57
   Time deposits of $100 or more                   (51)         164         113
   Other time deposits                               9          152         161
   Short-term borrowings                             0            2           2
   Subordinated debentures                          49           49          98
- -------------------------------------------------------------------------------
Total interest expense                             102          801         903
- -------------------------------------------------------------------------------
Net interest income                            $ 1,088     $  1,277     $ 2,365
- -------------------------------------------------------------------------------
1.    Average balances include nonaccrual loans.
2.    Interest income includes net loan fees.
3.    Interest income is presented on a tax-equivalent basis assuming a tax rate
      of 35%.

Allowance and Provision for Loan Losses

A significant determinant of the Company's operating results is the provision
for loan losses and the level of loans charged off. There was a $200,000
provision made for loan losses during the Second Quarter of 2005 and $150,000
provision made in the Second Quarter of 2004. There was a $400,000 provision
made for the First Half of 2005 compared with a $350,000 provision for the First
Half of 2004. Net loans recovered for the Second Quarter of 2005 and 2004 were
$3,000 and $6,000 respectively. Net loans charged off for the First Half of 2005
were $428,000 compared to net loans recovered of $9,000 for the First Half of
2004. Of the amount charged off in 2005, $425,000 was related to one commercial
borrower that ceased operations. The provision for loan losses can vary over
time based on an ongoing assessment of the adequacy of the allowance for loan
losses.

The allowance for loan losses at June 30, 2005 was $6,009,000 and at December
31, 2004 was $6,037,000. The ratio of allowance for loan losses to total loans
outstanding at June 30, 2005 was 1.17% compared to 1.21% at December 31, 2004.
Nonperforming loans were $658,000 or .13% of total loans at June 30, 2005
compared to $538,000 or .11% of total loans at December 31, 2004.

At June 30, 2005, impaired loans totaled $2,798,000, which included $658,000 of
nonperforming loans and one other loan with a balance of $2,140,000 that was
renegotiated in 2003. Although current under the new terms of the agreement, due
to the financial condition of the borrower there still remains risk as to the
collectability of all amounts due under the renegotiated agreement. Impaired
loans at December 31, 2004 were $2,718,000, which included $538,000 of
nonperforming loans and $2,180,000 related to the loan renegotiated in 2003
mentioned above. The allowance for loan losses on impaired loans was $1,115,000
as of June 30, 2005 and there were no impaired loans without an allowance for
loan losses.

Total impaired loans decreased $829,000 from June 30, 2004 to June 30, 2005.
This decrease was primarily due to one loan that had a balance of $713,000 last
year that is now current under the terms of the loan agreement. The remaining
decrease is due primarily to reductions in principal balance of various impaired
loans. These reductions were partially offset by two loans on nonaccrual and in
the process of liquidation at June 30, 2005. The first loan, with a balance of
$285,000, is expected to be collected once the company is fully liquidated. The
second loan, with a balance of $150,000, has a specific reserve set up for the
amount of the expected shortfall.


                                      -18-


The allowance for loan losses has been established and is maintained to absorb
losses inherent in the loan portfolio. An ongoing assessment of risk of loss is
performed to determine if the current balance of the allowance is adequate to
cover probable losses in the portfolio. A charge or credit is made to expense to
cover any deficiency or reduce any excess. The current methodology employed to
determine the appropriate allowance consists of two components, specific and
general. The Company develops specific valuation allowances on commercial,
commercial real estate, and construction loans based on individual review of
these loans and our estimate of the borrower's ability to repay the loan given
the availability of collateral, other sources of cash flow and collection
options available to us. The general component relates to all other loans, which
are evaluated based on loan grade. The loan grade assigned to each loan is
typically evaluated on an annual basis, unless circumstances require interim
evaluation. The Company assigns a reserve amount consistent with each loan's
rating category. The reserve amount is based on derived loss experience over
prescribed periods. In addition to the amounts derived from the loan grades, a
portion is added to the general reserve to take into account other factors
including national and local economic conditions, downturns in specific
industries including loss in collateral value, trends in credit quality at the
Company and the banking industry, and trends in risk rating changes. As part of
their examination process, federal and state agencies review the Company's
methodology for maintaining the allowance for loan losses and the balance in the
account. These agencies may require the Company to increase the allowance for
loan losses based on their judgments and interpretations about information
available to them at the time of their examination.

Summary of Asset Quality

The following table presents information as of and for the three and six-month
periods ended June 30, 2005 and 2004 pertaining to the Company's provision for
loan losses and analysis of the allowance for loan losses.



                                                               Three Months Ended             Six Months Ended
                                                                     June 30                       June 30
(Dollars in Thousands)                                         2005           2004           2005          2004
- -----------------------------------------------------------------------------------------------------------------
                                                                                            
Allowance at beginning of period                            $   5,806      $   5,709      $   6,037     $   5,506

Provision charged to expense                                      200            150            400           350

     Loans charged off                                             --             --            448             1
     Recoveries on loans previously charged off                     3              6             20            10
- -----------------------------------------------------------------------------------------------------------------
Net loans (recovered) charged-off                                  (3)            (6)           428            (9)

Allowance at end of period                                  $   6,009      $   5,865      $   6,009     $   5,865
- -----------------------------------------------------------------------------------------------------------------
Loans outstanding:
     Average                                                $ 514,520      $ 467,292      $ 508,355     $ 463,375
     June 30                                                  514,083        474,560        514,083       474,560
Ratio of allowance for loan losses to loans outstanding:
     Average                                                     1.17%          1.26%          1.18%         1.26%
     June 30                                                     1.17           1.24           1.17          1.24
Nonperforming loans:
     Nonaccrual loans                                       $     658      $   1,057      $     658     $   1,057
     Loans past due 90 days or more                                --             --             --            --

     Renegotiated loans                                             0          2,410              0         2,410
- -----------------------------------------------------------------------------------------------------------------
     Total non performing loans                             $     658      $   3,467      $     658     $   3,467
     Other impaired loans                                       2,140      $     160      $   2,140     $     160
     Foreclosed assets                                             --      $   1,234      $      --     $   1,234
- -----------------------------------------------------------------------------------------------------------------
Nonperforming loans as percentage of average loans                .13%           .74%           .13%          .74%
- -----------------------------------------------------------------------------------------------------------------


The Bank sold the two properties it had been carrying as other real estate owned
as of June 30, 2004. One property with a balance of $859,000 was sold in
December 2004 at a net loss of $59,000. The second property with a balance of
$375,000 was sold during the First Quarter of 2005 at a net gain of $38,000.

Operating Expense

Total operating expense for the Second Quarter of 2005 increased $1,685,000 or
13% to $14,998,000 compared to the Second Quarter of 2004. Total operating
expense for the First Half of 2005 increased $2,745,000 or 10% to $29,540,000
from the First Half of 2004. The increases were due primarily to operating
expenses of the Telecom Information Services division which was acquired in
August 2004 and expenses related to the growth in processing activity. Operating
expenses of the Telecom division were $681,000 and $1,403,000 for the Second
Quarter of 2005 and the First Half of 2005, respectively.


                                      -19-


Salaries and benefits expense increased $1,309,000 or 14% to $10,610,000 in the
Second Quarter of 2005 compared with the Second Quarter of 2004 and increased
$2,496,000 or 14% for the First Half of 2005 compared with the First Half of
2004. Salaries and benefits expense related to the Telecom division were
$482,000 and $929,000 for the Second Quarter of 2005 and the First Half of 2005,
respectively. The balance of the increase was primarily due to increases in
profit-sharing expense and additional salaries and benefits necessary to support
the increase in processing volume.

Occupancy expense for the Second Quarter of 2005 increased $135,000 or 31% to
$571,000 from the Second Quarter of 2004 and increased $177,000 or 20% in the
First Half of 2005 compared with the First Half of 2004. Occupancy expense
related to the Telecom division was $22,000 and $42,000 for the Second Quarter
of 2005 and the First Half of 2005, respectively. The remaining increase is due
primarily to an increase in rent expense from the Bank expansion into Southern
California and moving of two of its existing bank branches to new locations in
Missouri.

Equipment expense for the Second Quarter of 2005 decreased $156,000 or 16%
compared to the Second Quarter of 2004 and decreased $344,000 or 17% for the
First Half of 2005 compared with the First Half of 2004. Equipment expense
related to Telecom division was $17,000 and $38,000 for the Second Quarter of
2005 and the First Half of 2005, respectively. The decreases relate primarily to
software that was capitalized in 2000 and 2001 that is now fully amortized.

Amortization of intangible assets increased $44,000 or 57% to $121,000 for the
Second Quarter of 2005 and increased $87,000 or 56% to $242,000 for the First
Half of 2005. This increase related to the software acquired from the
acquisition of the Telecom division.

Other operating expense for the Second Quarter of 2005 increased $353,000 or 14%
compared to the Second Quarter of 2004 and increased $329,000 or 6% for the
First Half of 2005 compared with the First Half of 2004. Other operating
expenses of the Telecom division were $193,000 for the Second Quarter of 2005
and $394,000 for the First Half of 2005. Outside services and supplies increased
during the Second Quarter of 2005 offsetting reductions in postage and
promotional expense for the First Half of 2005.

Income tax expense for the Second Quarter of 2005 increased $721,000 or 107%
compared to the Second Quarter of 2004 and increased $1,288,000 or 87% for the
First Half of 2005 compared with the First Half of 2004. The effective tax rate
for the Second Quarter of 2005 was 35% compared with 28% in the Second Quarter
of 2004 and was 34% for the First Half of 2005 compared with 29% in 2004. The
increase in the effective tax rate was primarily due to the lower relative
effect of tax-exempt investment income to total income.

Financial Condition

Total assets at June 30, 2005 increased $58,239,000 or 8% from December 31,
2004. The most significant changes in asset balances during this period were
federal funds sold and other short-term investments that increased $53,538,000
or 83%, investments in debt and equity securities that decreased $13,006,000 or
17% and loans, net of the allowance for loan losses, that increased $13,663,000
or 3%. Loans increased as the Bank continues to expand its customer base.
Investments in debt and equity securities decreased as the Company sold
$12,952,000 in securities as part of the Company's ongoing asset/liability
program to manage liquidity and interest rate risk. Changes in federal funds
sold and other short-term investments reflect the Company's daily liquidity
position and is affected by the changes in the asset balances listed above and
also changes in deposit and accounts and drafts payable balances detailed below.

Total liabilities were $702,030,000, an increase of $55,098,000 or 9% from
December 31, 2004. Total deposits at June 30, 2005 were $295,329,000, an
increase of $19,700,000 or 7%. Accounts and drafts payable were $393,721,000, an
increase of $35,248,000 or 10%. Total shareholders' equity at June 30, 2005 was
$72,730,000 a $3,141,000 or 5% increase from December 31, 2004.

The increase in deposits reflects the Bank's ongoing marketing efforts to
attract deposits. Accounts and drafts payable will fluctuate from period-end to
period-end due to the payment processing cycle, which results in lower balances
on days when checks clear and higher balances on days when checks are issued.
For this reason, average balances are a more meaningful measure of accounts and
drafts payable (for average balances refer to the tables under the "Distribution
of Assets, Liabilities and Stockholders' Equity; Interest Rate and Interest
Differential" section of this report).


                                      -20-


The increase in total shareholders' equity resulted from net income of
$5,351,000; cash received on the exercise of stock options of $134,000; a
$44,000 tax benefit on stock awards, $63,000 from the amortization of stock
bonus awards offset by dividends paid of $1,545,000 ($.42 per share), the
repurchase of 16,545 shares of treasury stock for $586,000 and a decrease in
other comprehensive income of $320,000.

Liquidity and Capital Resources

The balance of liquid assets, or cash and cash equivalents, which include cash
and due from banks, federal funds sold and money market funds, was $143,532,000
at June 30, 2005, an increase of $55,989,000 or 64% from December 31, 2004. At
June 30, 2005 these assets represented 19% of total assets. These funds are the
Company's and its subsidiaries' primary source of liquidity to meet future
expected and unexpected loan demand, depositor withdrawals or reductions in
accounts and drafts payable.

Secondary sources of liquidity include the investment portfolio and borrowing
lines. Total investment in debt and equity securities was $64,124,000 at June
30, 2005, a decrease of $13,006,000 or 17% from December 31, 2004. These assets
represented 8% of total assets at June 30, 2005. Of this total, 56% were state
and political subdivision securities, 34% were U.S. Treasury securities and 10%
were U.S. government agencies. Of the total portfolio, 38% matures in one year,
29% matures in one to five years and 33% matures in five or more years. During
the First Half of 2005 the Company sold securities with a market value of
$12,952,000 and a portion of these funds were reinvested in U.S. Treasury and
agency securities.

The Bank has unsecured lines at correspondent banks to purchase federal funds up
to a maximum of $29,000,000. Additionally, the Bank maintains a line of credit
at an unaffiliated financial institution in the maximum amount of $84,535,000
collateralized by securities sold under repurchase agreements.

The deposits of the Company's banking subsidiary have historically been stable,
consisting of a sizable volume of core deposits related to customers that
utilize many other commercial products of the Bank. The accounts and drafts
payable generated by the Company has also historically been a stable source of
funds.

Net cash flows provided by operating activities were $4,840,000 for the First
Half of 2005 compared with $3,417,000 for the First Half of 2004. This increase
is primarily attributable to $1,804,000 additional net income and other normal
fluctuations in other asset and liability accounts. Net cash flows from
investing and financing activities fluctuate greatly as the Company actively
manages its investment and loan portfolios and customer activity influences
changes in deposit and accounts and drafts payable balances. Further analysis of
the changes in these account balances is discussed earlier in this report. Due
to the daily fluctuations in these account balances, the analysis of changes in
average balances, also discussed earlier in this report, can be more indicative
of underlying activity than the period-end balances used in the statements of
cash flows. Management anticipates that cash and cash equivalents, maturing
investments and cash from operations will continue to be sufficient to fund the
Company's operations and capital expenditures in 2005.

The Company faces market risk to the extent that its net interest income and
fair market value of equity are affected by changes in market interest rates.
For information regarding the market risk of the Company's financial
instruments, see Item 3. "QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET
RISK".

Risk-based capital guidelines require the Company and the Bank to meet a minimum
total capital ratio of 8.0% of which at least 4.0% must consist of Tier 1
capital. Tier 1 capital generally consists of (a) common shareholders' equity
(excluding the unrealized market value adjustments on the available-for-sale
securities), (b) qualifying perpetual preferred stock and related surplus
subject to certain limitations specified by the FDIC, (c) minority interests in
the equity accounts of consolidated subsidiaries less (d) goodwill, (e) mortgage
servicing rights within certain limits, and (f) any other intangible assets and
investments in subsidiaries that the FDIC determines should be deducted from
Tier 1 capital. The FDIC also requires a minimum leverage ratio of 3.0%, defined
as the ratio of Tier 1 capital less purchased mortgage servicing rights to total
assets, for banking organizations deemed the strongest and most highly rated by
banking regulators. A higher minimum leverage ratio is required of less highly
rated banking organizations. Total capital, a measure of capital adequacy,
includes Tier 1 capital, allowance for loan losses, and debt considered equity
for regulatory capital purposes.

The Company and the Bank continue to exceed all regulatory capital requirements,
as evidenced by the following capital amounts and ratios at June 30, 2005 and
December 31, 2004:


                                      -21-


June 30, 2005 (In Thousands)                                Amount        Ratio
- -------------------------------------------------------------------------------
Total capital (to risk-weighted assets)
         Cass Information Systems, Inc.                    $ 72,912       11.94%
         Cass Commercial Bank                                37,363       12.46
Tier I capital (to risk-weighted assets)
         Cass Information Systems, Inc.                    $ 63,203       10.35%
         Cass Commercial Bank                                33,217       11.08
Tier I capital (to average assets)
         Cass Information Systems, Inc.                    $ 63,203        8.44%
         Cass Commercial Bank                                33,217        9.83
- -------------------------------------------------------------------------------

December 31, 2004 (In Thousands)                            Amount        Ratio
- -------------------------------------------------------------------------------
Total capital (to risk-weighted assets)
         Cass Information Systems, Inc.                    $ 69,238       11.86%
         Cass Commercial Bank                                36,634       12.01
Tier I capital (to risk-weighted assets)
         Cass Information Systems, Inc.                    $ 59,501       10.19%
         Cass Commercial Bank                                32,817       10.76
Tier I capital (to average assets)
         Cass Information Systems, Inc.                    $ 59,501        7.91%
         Cass Commercial Bank                                32,817        9.46
- -------------------------------------------------------------------------------

Inflation

The Company's assets and liabilities are primarily monetary, consisting of cash,
cash equivalents, securities, loans, payables and deposits. Monetary assets and
liabilities are those that can be converted into a fixed number of dollars. The
Company's consolidated balance sheet reflects a net positive monetary position
(monetary assets exceed monetary liabilities). During periods of inflation, the
holding of a net positive monetary position will result in an overall decline in
the purchasing power of a company. Management believes that replacement costs of
equipment, furniture, and leasehold improvements will not materially affect
operations. The rate of inflation does affect certain expenses, such as those
for employee compensation, which may not be readily recoverable in the price of
the Company's services.

Impact of New Accounting Pronouncements

In 2003, the Emerging Issues Task Force ("EITF") reached a consensus on, "The
Meaning of Other-Than-Temporary Impairment and Its Application to Certain
Investments" ("EITF 03-1"), which provides guidance to assess whether there have
been any events or economic circumstances to indicate that a security is
impaired on an other-than-temporary basis. Factors to consider include the
length of time the security has had a market value less than the cost basis, the
intent and ability of the company to hold the security for a period of time
sufficient for a recovery in value, recent events specific to the issuer or
industry and for debt securities, external credit rating and recent downgrades.
Securities on which there is an unrealized loss that is deemed to be
other-than-temporary are written down to fair value with the write-down recorded
as a realized loss. In December 2004, the Financial Accounting Standards Board
("FASB") announced that it will reconsider in its entirety all guidance on
disclosing, measuring and recognizing other-than-temporary impairments of debt
and equity securities. In June 2005, the FASB decided not to provide additional
guidance on the meaning of other than temporary impairment and to issue proposed
FSP EITF 03-1-a as final. Until new guidance is issued, companies must continue
to comply with the disclosure requirements of EITF 03-1 and all relevant
measurement and recognition requirements in other accounting literature.

In December 2004, the FASB issued SFAS 123 (revised 2004), "Share-Based Payment"
("SFAS 123R"), which replaced, "Accounting for Stock-Based Compensation" ("SFAS
123") and supersedes Accounting Principles Board Opinion No. 25, "Accounting for
Stock Issued to Employees" ("APB 25"). SFAS 123R requires the measurement of all
employee share-based payments to employees, including grants of employee stock
options, using a fair-value-based method and the recording of such expense in
our consolidated statements of income. The accounting provisions of SFAS 123R
are effective for fiscal years beginning after June 15, 2005. The pro forma
disclosures previously permitted under SFAS 123 will no longer be an alternative
to financial statement recognition. See Note 10 of this report for the pro forma
net income and net income per share amounts, for Second Quarter 2005 and 2004,
as if we had used a fair-value-based method similar to the methods required
under SFAS 123R to measure compensation expense for employee stock incentive
awards. Although we have not yet determined whether the adoption of SFAS 123R
will result in amounts that are similar to the current pro forma disclosures
under SFAS 123, we are evaluating the requirements under SFAS 123R and do not
expect the adoption to have a significant adverse impact on our consolidated
statements of income and net income per share.


                                      -22-


In May 2005, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 154 "Accounting Changes and Error
Corrections" as a replacement of APB Opinion No. 20 and FASB Statement No 3.
This Statement applies to all voluntary changes in accounting principle and
changes required by an accounting pronouncement in the unusual instance that the
pronouncement does not include specific transition provisions. This Statement
carries forward without change the guidance contained in APB Opinion No. 20 for
reporting the correction of an error in previously issued financial statements
and a change in accounting estimate. This Statement also carries forward the
guidance in APB Opinion No. 20 requiring justification of a change in accounting
principle on the basis of preferability. This Statement shall be effective for
accounting changes and corrections of errors made in fiscal years beginning
after December 15, 2005. The Company is not currently aware of any accounting
changes or errors to which the provisions of this Statement will apply.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

As described in the Company's Annual Report on Form 10-K for the year ended
December 31, 2004, the Company manages its interest rate risk through
measurement techniques that include gap analysis and a simulation model. As part
of the risk management process, asset/liability management policies are
established and monitored by management. The policy objective is to limit the
change in annualized net interest income to 15% from an immediate and sustained
parallel change in interest rates of 200 basis points. Based on the Company's
most recent evaluation, management does not believe the Company's risk position
at June 30, 2005 has changed materially from that at December 31, 2004.

ITEM 4. CONTROLS AND PROCEDURES

The Company maintains disclosure controls and procedures designed to provide
reasonable assurance that the information it is required to disclose in the
reports it files with the Securities and Exchange Commission ("SEC") is fairly
recorded, processed, summarized and reported to management, including the Chief
Executive Officer and Principal Financial Officer, within the time periods
specified in the rules of the SEC. The Company's Chief Executive and Principal
Financial Officers have reviewed and evaluated the Company's disclosure controls
and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities
Exchange Act of 1934, as amended) as of June 30, 2005 and based on their
evaluation, believe that these procedures are adequate and effective to ensure
that the Company is able to collect, process and disclose the information it is
required to disclose in the reports it files with the SEC within the required
time periods.

There were no changes in the Second Quarter of 2005 in the Company's internal
controls identified by the Chief Executive and Principal Financial Officers in
connection with their evaluation that materially affected or are reasonably
likely to materially affect the Company's internal controls over financial
reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act).

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

      The Company and its subsidiaries are not involved in any pending
      proceedings other than ordinary routine litigation incidental to its
      businesses. Management believes none of these proceedings, if determined
      adversely, would have a material effect on the business or financial
      condition of the Company or its subsidiaries.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

      The Company maintains a treasury stock buyback program and as of June 30,
      2005 was authorized by the Board of Directors to repurchase up to 83,455
      shares of its Common Stock. No shares of the Company's common stock were
      repurchased in the Second Quarter of 2005.


                                      -23-


ITEM 3. DEFAULTS UPON SENIOR SECURITIES

      None.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

      At the annual meeting of the shareholders of Cass Information Systems,
      Inc. held on April 18, 2005, the following proposal was voted on and
      approved:

      The following is a summary of votes cast. No broker non-votes were
      received.

      Proposal to elect four Directors for a term
        of three years ending 2008;                                    Withheld
                                                           For         Authority
                                                        ---------      ---------
        K. Dane Brooksher                               2,608,676       51,087
        Eric H. Brunngraber                             2,611,839       47,924
        Bryan S. Chapell                                2,599,736       60,027
        Benjamin F. Edwards, IV                         2,593,486       66,277

ITEM 5. OTHER INFORMATION

      None

ITEM 6. EXHIBITS

      Exhibit 31.1 Certification Pursuant to Rules 13a-14 and 15d-14 under the
      Securities Exchange Act of 1934, as amended, as adopted pursuant to
      Section 302 of the Sarbanes-Oxley Act of 2002.

      Exhibit 31.2 Certification Pursuant to Rules 13a-14 and 15d-14 under the
      Securities Exchange Act of 1934, as amended, as adopted pursuant to
      Section 302 of the Sarbanes-Oxley Act of 2002.

      Exhibit 32.1 Certification Pursuant to 18 U.S.C. Section 1350, as Adopted
      Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

      Exhibit 32.2 Certification Pursuant to 18 U.S.C. Section 1350, as Adopted
      Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.


                                      -24-


                                   SIGNATURES

      Pursuant to the requirements 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.

                                            CASS INFORMATION SYSTEMS, INC.


DATE: August 5, 2005                        By /s/ Lawrence A. Collett
                                               ---------------------------------
                                               Lawrence A. Collett
                                            Chairman and Chief Executive Officer


DATE: August 5, 2005                         By /s/ Eric H. Brunngraber
                                               ---------------------------------
                                                Eric H. Brunngraber
                                              Vice President-Secretary
                                    (Principal Financial and Accounting Officer)


                                      -25-