Comparison of Operating Results for the Three and Nine Months Ended September 30, 2022 and 2021
Net Income. Net income for the three months ended September 30, 2022 decreased $578,000, or 21.5%, to $2.1 million, or $0.19 per diluted share, compared to net income of $2.7 million, or $0.25 per diluted share, for the three months ended September 30, 2021. Interest and dividend income increased $1.5 million, or 13.5%, interest expense increased $456,000, or 45.6%, the provision for loan losses increased $1.5 million, non-interest income decreased $250,000, or 15.3%, non-interest expense increased $101,000, or 1.1%, and taxes decreased $234,000, or 28.2%, between comparable quarters.
Net income for the nine months ended September 30, 2022 decreased $2.4 million, or 27.8%, to $6.2 million, or $0.56 per diluted share, compared to net income of $8.6 million, or $0.79 per diluted share, for the nine months ended September 30, 2021. Interest and dividend income increased $2.9 million, or 9.0%, interest expense decreased $190,000, or 5.6%, the provision for loan losses increased $3.3 million, or 151.2%, non-interest income decreased $1.1 million, or 19.8%, non-interest expense increased $1.9 million, or 7.2%, and taxes decreased $788,000, or 33.7%, between the comparable nine-month periods.
Net Interest Income. Net interest income increased $1.0 million, or 10.3%, to $11.1 million for the three months ended September 30, 2022, compared to $10.1 million for the quarter ended September 30, 2021. The ratio of average interest-earning assets to average interest-bearing liabilities decreased 2.0% to 142.62% while our net interest margin increased by 19 basis points to 3.61% when comparing the third quarter of 2022 to the same period in 2021.
Net interest income increased $3.1 million, or 10.7%, to $32.1 million for the nine months ended September 30, 2022, compared to $29.0 million for the nine months ended September 30, 2021. The ratio of average interest-earning assets to average interest-bearing liabilities decreased 0.6% to 143.50% while our net interest margin increased by 11 basis points to 3.55% for the nine months ended September 30, 2022, compared to 3.44% for the same nine month period in 2021.
Interest Income. Interest income increased $1.5 million, or 13.5%, to $12.6 million for the three months ended September 30, 2022 from $11.1 million for the comparable 2021 period. Both interest and fees on loans and interest and dividends on securities increased as the average balances both increased. For the three months ended September 30, 2022, the average balance of loans increased $93.7 million, while the average balance of available for sale securities increased $21.7 million when compared to the three months ended September 30, 2021. The average yield on loans decreased 6 basis points, while the average yield on available for sale securities increased 52 basis points. Loan yields were driven lower mainly due to the reduction in the overall risk rating of our indirect loan portfolio as both competition for higher yielding loans and our desire to manage long term credit quality had some negative impact on interest revenue. The average yield of interest-earning assets increased by 32 basis points to 4.08% and the average balances of interest-earning assets increased $51.3 million, or 4.4%.
Interest income increased $2.9 million, or 9.0%, to $35.3 million for the nine months ended September 30, 2022 from $32.3 million for the comparable 2021 period. Interest and dividends on securities and interest and fees on loans both increased. For the nine months ended September 30, 2022, the average balance of loans increased $35.8 million, while the average balance of available for sale securities increased $87.4 million when compared to the nine months ended September 30, 2021. The average yield on loans increased 3 basis points, while the average yield on available for sale securities increased 26 basis points. The average yield of interest-earning assets increased by 7 basis points to 3.91% while the average balances of interest-earning assets increased $80.3 million, or 7.1%.
Interest Expense. Interest expense increased $456,000, or 45.6%, from $1.0 million for the quarter ended September 30, 2021, to $1.5 million for the quarter ended September 30, 2022. The average cost of interest-bearing liabilities increased 19 basis points to 0.68% for the quarter ended September 30, 2022 while the average balance of total interest-bearing liabilities increased $52.0 million, or 6.5%, to $855.2 million. For the three months ended September 30, 2022 and 2021, the average cost of interest-bearing deposits increased by 17 basis points. An increase of $95.4 million, or 16.1%, in the average balance of our core deposits was partially offset by a decrease of $48.8 million, or 28.2%, in the average balance of certificates of deposit.