A significant portion of our banking assets are subject to changes in interest rates. As of December 31, 2024, approximately 81% of our loan portfolio was in fixed rate loans, while only 19% was in variable rate loans. Like most financial institutions, our earnings significantly depend on our net interest income, the principal component of our earnings, which is the difference between interest earned by us from our interest-earning assets, such as loans and investment securities, and interest paid by us on our interest-bearing liabilities, such as deposits and borrowings. We expect that we will periodically experience "gaps" in the interest rate sensitivities of our assets and liabilities, meaning that either our interest-bearing liabilities will be more sensitive to changes in market interest rates than our interest-earning assets, or vice versa. In either event, if market interest rates should move contrary to our position, this "gap" will negatively impact our earnings. Many factors beyond our control impact interest rates, including economic conditions, governmental monetary policies, inflation, recession, changes in unemployment, the money supply, and disorder and instability in domestic and foreign financial markets. Changes in monetary policies of the various government agencies could influence not only the interest we receive on loans and securities and the interest we pay on deposits and borrowings, but such changes could also affect our ability to originate loans and obtain deposits, the fair value of our financial assets and liabilities, and the average duration of our assets and liabilities.
In a declining interest rate environment, there may be an increase in prepayments on loans as borrowers refinance their loans at lower rates. In a rising interest rate environment, the interest rate increases often result in larger payment requirements for our floating interest rate borrowers, which increases the potential for default. At the same time, the marketability of the property securing a loan may be adversely affected by any reduced demand resulting from higher interest rates. An increase (or decrease) in interest rates also requires us to increase (or decrease) the interest rates that we pay on our deposits. Changes in interest rates also can affect the value of loans, securities and other assets. An increase in interest rates that adversely affects the ability of borrowers to pay the principal or interest on loans may lead to increases in nonperforming assets, charge-offs and delinquencies, further increases to the allowance for credit losses, and a reduction of income recognized, among others, which could have a material adverse effect on our results of operations and cash flows. Further, when we place a loan on non-accrual status, we reverse any accrued but unpaid interest receivable, which decreases interest income. At the same time, we continue to have a cost to fund the loan, which is reflected as interest expense, without any interest income to offset the associated funding expense. Thus, an increase in the amount of nonperforming assets could have a material adverse impact on our net interest income.
In March 2020, in response to the COVID-19 pandemic, the Federal Reserve reduced the target Federal Funds rate to between zero and 0.25%. However, starting in March 2022 and continuing through mid-2023, the Federal Reserve raised the target Federal Funds rate to between 5.25% and 5.50% in response to persistent inflationary pressures. As of 2025, interest rates remain elevated, and prolonged higher rates could result in net interest margin compression as interest-bearing liability rates continue to reprice upwards, while interest-earning assets may have already repriced to peak yields. Rapid changes in interest rates make it difficult for us to balance our loan and deposit portfolios, which may adversely affect our results of operations by, for example, reducing asset yields or spreads, creating operating and system issues, or having other adverse impacts on our business. When short-term interest rates are low for a prolonged period and assuming longer-term interest rates fall further, we could experience net interest margin compression as our interest-earning assets would continue to reprice downward while our interest-bearing liability rates could fail to decline in tandem, which would have an adverse effect on our net interest income and could have an adverse effect on our business, financial condition and results of operations. When interest-earning assets mature or reprice more quickly, or to a greater degree than interest-bearing liabilities, falling interest rates could reduce net interest income. When interest-bearing liabilities mature or reprice more quickly, or to a greater degree than interest-earning assets in a period, an increase in interest rates could reduce net interest income.
In addition, our mortgage operations provide a portion of our noninterest income. We generate mortgage revenues primarily from gains on the sale of residential mortgage loans pursuant to programs currently offered by Fannie Mae, Ginnie Mae or Freddie Mac. In this rising or higher interest rate environment, our originations of mortgage loans have decreased, resulting in fewer loans that are available to be sold to investors, which has decreased mortgage revenues in noninterest income. In addition, our results of operations are affected by the amount of noninterest expenses associated with mortgage activities, such as salaries and employee benefits, other loan expense, and other costs. During periods of reduced loan demand, our results of operations may be adversely affected to the extent that we are unable to reduce expenses commensurate with the decline in loan originations.