Interest Expense. Total interest expense decreased $112,000, or 14.1%, to $683,000 for the year ended December 31, 2022, compared to $795,000 for the year ended December 31, 2021. Interest expense on deposits was $402,000 for the year ended December 31, 2022, down $121,000, or 23.1%, from $523,000 for the year ended December 31, 2021. Total average interest-bearing deposits were $147.3 million for the year ended December 31, 2022, up less than 1.0% compared to the prior year, while the average rate paid on interest-bearing deposits decreased by nine basis points to 0.27% for the year ended December 31, 2022, compared to 0.36% for the previous year.
Net Interest Income. Net interest income was $7.3 million for the year ended December 31, 2022, up $427,000, or 6.2%, compared to the year ended December 31, 2021. Our average interest rate spread was 2.56% and 2.73% for the years ended December 31, 2022 and 2021, respectively. Our net interest margin was 2.75% and 2.91% for the years ended December 31, 2022 and 2021, respectively. The decline in interest rate spread and net interest margin over the comparable periods was primarily the result of lower average yields on loans and a shift in the mix of our interest-earning assets as we grew our investment securities portfolio and experienced a decline in total average loans during 2022 compared to 2021.
Provision for Loan Losses. The allowance for loan losses is established through a provision for loan losses charged to earnings as losses related to our loan portfolio are determined to be probable and can be reasonably estimated. Loans, or portions of loans, are charged off against the allowance in the period that such loans, or portions thereof, are deemed uncollectible. Subsequent recoveries, if any, are credited to the allowance.
The allowance for loan losses is evaluated on a regular basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of the underlying collateral, and prevailing economic conditions. The evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available.
We recorded reversals to the allowance for loan losses of $375,000 and $660,000 for the years ended December 31, 2022 and 2021, respectively. The amounts recorded during both periods primarily reflect the release of reserve builds recorded during 2020 for the estimated effects of the COVID-19 pandemic on credit quality. While our initial assessment of the impact of the COVID-19 pandemic has improved during 2021 and 2022, uncertainty remains due to risks related to declining government stimulus availability, persistent inflation, rising market interest rates and a slowing economy.
The establishment of the allowance for loan losses is significantly affected by management judgment and uncertainties and there is a likelihood that different amounts would be reported under different conditions or assumptions. Various regulatory agencies, as an integral part of their examination process, periodically review our allowance for loan losses. While management is responsible for the establishment of the allowance for loan losses and for adjusting such allowance through provisions for loan losses, management may determine, as a result of such regulatory reviews, that an increase or decrease in the allowance or provision for loan losses may be necessary or that loan charge-offs are needed.
Non-interest Income. Non-interest income decreased $1.5 million, or 55.3%, to $1.2 million for the year ended December 31, 2022, from $2.6 million for the year ended December 31, 2021. In August 2021, the Bank was awarded a $1.8 million grant from the U.S. Treasury Department’s CDFI Rapid Response Program, which was recognized as non-interest income. During 2022, the Company received and recognized into non-interest income a $171,000 BEA Program grant from the CDFI Fund.
Income from bank-owned life insurance (“BOLI”) increased by $224,000 to $314,000 for the year ended December 31, 2022, compared to the prior year, largely due to an aggregate of $10.0 million in additional BOLI policies purchased in March and April of 2022. During 2022, the Company also recorded losses on the disposal of fixed assets with a total net book value of $77,000. Of the assets disposed, $55,000 was attributable to branch signage that was replaced due to the Bank’s rebranding.