interest expense is $202,000 of additional interest expense that the Company had to recognize from the write-off of the unamortized issuance costs from the original debt instruments that the new sub debt replaced. The remaining portion of the favorable variance in borrowings interest expense between the nine months of 2022 and the nine months of 2021 is due to reduced interest expense from Federal Home Loan Bank (FHLB) borrowings. The average balance of total short-term and FHLB borrowings is lower in the first nine months of 2022 by $13.8 million, or 26.4%, as strength of the Company’s liquidity position allowed management to let higher cost FHLB term advances mature and not be replaced.
The Company recorded a $500,000 loan loss provision in the third quarter of 2022 as compared to a $350,000 provision expense recorded in the third quarter of 2021. For the nine months of 2022, the Company recorded a $225,000 provision recovery compared to an $850,000 provision expense recorded in the nine months of 2021 resulting in a net favorable change of $1.1 million. The increased third quarter 2022 provision expense reflects the transfer of one commercial real estate loan relationship into non-accrual status while the borrower pursues the sale of the property. However, the provision recovery for the nine-month time period in 2022 reflects improved credit quality for the overall portfolio due to several loan upgrades and increased payoff and paydown activity including two substandard credits. As a result, the Company also experienced lower levels of classified assets. As demonstrated historically, the Company continues its strategic conviction that a strong allowance for loan losses is needed, which has proven to be essential given the support provided to certain borrowers as they fully recover from the COVID-19 pandemic. Even with the third quarter increase, overall non-performing assets remain well controlled totaling $6.0 million, or 0.61% of total loans, on September 30, 2022. The Company continues to experience low net loan charge-offs, which were $111,000, or 0.02% of total average loans, in the nine months of 2022 and is only slightly higher than net loan charge-offs of $71,000, or 0.01% of total average loans, for the nine months of 2021. In summary, the allowance for loan losses provided 202% coverage of non-performing assets, and 1.23% of total loans, on September 30, 2022, compared to 373% coverage of non-performing assets, and 1.26% of total loans, on December 31, 2021.
Total non-interest income in the third quarter of 2022 decreased by $90,000, or 2.0%, from the prior year's third quarter and for the nine months of 2022 decreased by $630,000, or 4.7%, from the nine months of 2021. Net realized gains on loans held for sale decreased by $449,000, or 71.0%, for the nine months, due to the lower level of residential mortgage loan production which reflects a reduced level of mortgage loan refinance activity due to the rapid escalation of interest rates since the beginning of 2022. Residential mortgage loan production through nine months in 2022 totals $19.9 million representing a $56.2 million, or 73.8%, reduction from the 2021 production level. The reduced level of mortgage loan production also caused mortgage related fees to decline by $218,000, or 70.3%, for the nine months. Wealth management fees decreased by $324,000, or 10.3%, for the third quarter of 2022 and also declined by $77,000, or 0.9%, for the nine-month period between years. The decrease in both time periods reflects the unfavorable impact of the declining equity markets on wealth management fee income as well as the unfavorable impact that the move in the bond market is having on wealth management asset values. Both unfavorable items are being partially offset by new customer business growth. The fair market value of wealth management assets declined since the fourth quarter of 2021 by $422.0 million, or 15.6%, and totaled $2.3 billion at September 30, 2022. Service charges on deposit accounts increased by $139,000, or 20.3%, in the nine months of 2022 compared to the nine months of 2021, as consumers are more active this year, increasing their spending habits. Revenue from bank owned life insurance (BOLI) increased by $108,000, or 48.9%, for the third quarter of 2022 due to the receipt of a death claim. BOLI income for the nine months in 2022 is consistent with the 2021 level. Finally, other income is $113,000, or 16.1%, higher for the quarter and $61,000, or 3.2%, higher for the nine-month period due to the recognition of a positive credit valuation adjustment to the market value of the interest rate swap contracts that the Company executed to accommodate the needs of certain borrowers while managing our interest rate risk position.
The Company has demonstrated good expense control in this inflationary environment as total non-interest expense in the third quarter of 2022 increased by $207,000, or 1.8%, when compared to the third quarter of 2021 and increased in the nine months of 2022 by $453,000, or 1.3%, when compared to 2021. Salaries & employee benefits increased by $161,000, or 2.3%, for the quarter and are $721,000, or 3.5%, higher for the nine-month time period in 2022. Within total salaries & benefits expense, salaries costs are higher by $1.1 million, or 8.5%, through nine months due to merit increases and a higher level of full-time equivalent employees (FTEs). Total FTEs of 306 in the third quarter of 2022 are nine higher than they were in the third quarter of 2021 as the Company has been able to fill certain open positions this year. Also, contributing to the higher salaries & employee benefits costs were additional increases to health care and other employee benefits. Partially offsetting these higher costs within salaries & benefits through nine months was lower incentive compensation by $354,000, or 25.1%, due to the reduced level of loan production. Similar to what occurred in 2021, the Company was required to recognize a settlement charge in connection with its defined benefit pension plan in the second and third quarters of 2022. The amount of the charge in the third quarter was $230,000, bringing the total settlement charge recognized for the nine months to $1.2 million. A settlement charge must be recognized when the total dollar amount of lump sum distributions paid from the pension plan to retired employees exceeds a threshold of expected annual service and interest costs in the current year. The value of the lump sums continued to be elevated this year due to the low level where interest rates were late in 2021 when these lump sums were calculated. It is anticipated that the Company will be required to recognize additional settlement charges through year end as more people retire. However, since the retired employees have chosen to take the lump sum payments, these individuals are no longer included in the pension plan. Therefore, the Company’s normal annual pension expense is expected to be lower in the future. This has been evident so far in 2022 as the normal amount of pension expense required to be recognized is lower than the 2021 level. Specifically, pension expense in the third quarter of 2022 was $349,000, or 63.1%, lower than the 2021 third quarter level and was $687,000, or 34.9%, lower for the nine-month time period compared to last year. Professional fees were