Results of Operation and Financial Condition
We continue to monitor the impact of the COVID-19 pandemic on our results of operations and financial condition. For the year ended December 31, 2020, we determined it prudent to increase our allowance for credit losses to $33.9 million, driven by both our adoption of the Current Expected Credit Losses (“CECL”) methodology and the expected impact of the COVID-19 pandemic and market interest rate reductions in anticipation of continued market risk and uncertainty. In 2021, due to the lack of significant net charge-offs projected with the 2020 forecast, and a more favorable forecast for the estimated life of loans, we reversed $9.5 million of our legacy allowance for credit losses, but recorded $12.1 million of Day One credit marks to the allowance for credit losses, as well as $12.2 million of Day Two adjustments on non-purchase credit deteriorated life of loan loss estimates, each stemming from the West Suburban acquisition. In the first quarter of 2022, we recorded provision expense of $320,000 based on our assessment of nonperforming loan metrics and trends and estimated future credit losses. We recorded net charge-offs of $293,000 in the first quarter of 2022, which reduced the ACL.
We also adjust our investment securities portfolio to fair value each period end and review for any impairment that would require a provision for credit losses. At this time, we have determined there is no need for a provision for credit losses related to our investment securities portfolio. Because of changing economic and market conditions affecting issuers, we may be required to recognize impairments in the future on the securities we hold as well as experience reductions in other comprehensive income. We cannot currently determine the ultimate impact of the pandemic on the long-term value of our portfolio.
As of March 31, 2022 and December 31, 2021, we had $86.3 million of goodwill. At November 30, 2021, we performed our recurring annual review for any goodwill impairment. We determined no goodwill impairment existed, however, continued delayed recovery or further deterioration in market conditions related to the general economy, financial markets, and the associated impacts on our customers, employees and vendors, among other factors, could significantly impact the impairment analysis and may result in future goodwill impairment charges that, if incurred, could have a material adverse effect on our results of operations and financial condition.
Lending Operations and Accommodations to Borrowers
To more fully support our customers during the pandemic, we established client assistance programs, including offering commercial, consumer, and mortgage loan payment deferrals for certain clients. During 2020 and 2021, we executed 509 of these deferrals on loan balances of $242.7 million. As of March 31, 2022, over 97% of the loan balances previously in deferral status had resumed payments or paid off.
During 2020 and 2021, as part of the SBA Paycheck Protection Program (“PPP”), we processed 1,320 PPP loan applications, representing a total of $199.0 million, and we acquired $20.8 million PPP loans from our acquisition of West Suburban. We started the application process for loan forgiveness for PPP loans in October 2020, and we continued to receive funds for forgiven loans from both the first and second round of PPP loans through March 2022. As of March 31, 2022, we had 80 loans, which totaled $11.2 million, still outstanding under the PPP program. We expect the application process for loan forgiveness to continue through the third quarter of 2022, with funds to be received from the SBA for the forgiven loans through the remainder of 2022.
Capital and Liquidity
As of March 31, 2022, all of our capital ratios were in excess of all regulatory requirements. While we believe that we have sufficient capital to withstand an extended economic recession brought about by the COVID-19 pandemic, our reported and regulatory capital ratios could be adversely impacted by credit losses.
We believe there could be potential stresses on liquidity management as a result of the COVID-19 pandemic. For instance, as customers manage their own liquidity stress, we could experience an increase in the utilization of existing lines of credit. However, to date, due in part to federal government stimulus funds received by our customers, as well as a higher volume of loan paydowns than periods prior to COVID-19, our liquidity has increased.
Financial Overview
Net income for the first quarter of 2022 was $12.0 million, or $0.27 per diluted share, compared to $11.9 million, or $0.40 per diluted share, for the first quarter of 2021. Our 2022 net income increased primarily as a result of the impact of a full quarter of earnings, following our acquisition of West Suburban, which resulted in growth in net interest income and noninterest income, partially offset by higher noninterest expense, which included $5.6 million in acquisition-related costs in the first quarter of 2022. Adjusted net income, a non-GAAP financial measure that excludes acquisition-related costs, was $16.1 million for the first quarter of 2022. See the discussion