Comparison of Operating Results for the Three Months Ended June 30, 2021 and 2020
General. Net income for the quarter ended June 30, 2021 was $369,000 as compared to $681,000 for the quarter ended June 30, 2020, a decrease of $312,000 or 45.8%. The decrease was due to a $243,000 increase in noninterest expense, a $45,000 increase in provision for loan losses, a $27,000 increase in income tax expense, and a $309,000 decrease in noninterest income, partially offset by a $312,000 increase in net interest income.
Interest and Dividend Income. Interest and dividend income decreased $11,000, or 0.3%, to $3.4 million for the quarter ended June 30, 2021. This decrease was primarily attributable to a net decrease of $59,000 in interest on investment securities, partially offset by a $45,000 increase in interest on loans receivable. The average balance of investment securities increased $1.1 million, or 3.2%, to $36.8 million for the quarter ended June 30, 2021 from $35.7 million for the quarter ended June 30, 2020, while the average yield on investment securities decreased 64 basis points to 2.49% for the 2021 period from 3.13% for the 2020 period. The average balance of loans increased $10.7 million, or 3.9%, to $284.5 million for the quarter ended June 30, 2021 from $273.8 million for the quarter ended June 30, 2020, while the average yield on loans decreased 10 basis points to 4.37% for the 2021 period from 4.47% for the 2020 period, reflecting the lower market interest rate environment period to period.
Interest Expense. Total interest expense decreased $323,000, or 42.7%, to $433,000 for the quarter ended June 30, 2021 from $756,000 for the quarter ended June 30, 2020. Interest expense on total interest-bearing deposits decreased $262,000, or 44.9%, to $322,000 for the quarter ended June 30, 2021 from $584,000 for the quarter ended June 30, 2020. The decrease was primarily attributable to a decrease of $20.1 million, or 19.8%, in the average balance of certificates of deposit to $81.6 million for the quarter ended June 30, 2021 from $101.7 million for the quarter ended June 30, 2020 in addition to a decrease in the average cost of 93 basis points to 0.83% for the quarter ended June 30, 2021 from 1.76% for the same period in 2020. Interest expense on borrowings decreased $61,000, or 35.5%, to $111,000 for the quarter ended June 30, 2021 from $172,000 for the quarter ended June 30, 2020, due to a 20 basis points decrease in average borrowing costs to 1.87% for the quarter ended June 30, 2021 from 2.07% for the quarter ended June 30, 2020 as a result of a decrease in the average balance of borrowings to $23.7 million for the quarter ended June 30, 2021 from $33.5 million for the quarter ended June 30, 2020.
Net Interest Income. Net interest income increased $312,000, or 11.9%, to $2.9 million for the quarter ended June 30, 2021 from $2.6 million for the quarter ended June 30, 2020. Our net interest rate spread increased to 3.45% for the quarter ended June 30, 2021 from 3.29% for the quarter ended June 30, 2020. Our net interest margin increased to 3.45% for the quarter ended June 30, 2021 from 3.27% for the same period in 2020. Net interest rate spread and net interest margin were affected primarily by the change in funding sources and the decrease in market interest rates between the comparable periods.
Provision for Loan Losses. Based on management’s analysis of the allowance for loan losses described in Note 6 of our interim consolidated financial statements “Allowance for Loan Losses,” we recorded a provision for loan losses of $135,000 for the quarter ended June 30, 2021 as compared to a provision for loan losses of $90,000 for the quarter ended June 30, 2020. The allowance for loan losses was $2.0 million, or 0.72%, of total loans at June 30, 2021 as compared to $1.8 million, or 0.65%, of total loans at December 31, 2020. The increase provision for loan losses in the 2021 period was due primarily to an increase in purchased loans secured by manufactured homes, automobiles, and recreational vehicles.
Noninterest Income. Noninterest income decreased $309,000, or 30.0%, to $720,000 for the quarter ended June 30, 2021 from $1.0 million for the quarter ended June 30, 2020. The decrease was primarily due to decreases in other income, realized gains on equity securities, and investment services commissions, partially offset by an increase in banking fees and service charges. Other income decreased $288,000, or 80.9%, to $68,000 for the quarter ended June 30, 2021 from $356,000 for the quarter ended June 30, 2021 primarily due to a $330,000 gain realized on the sale of the investment services book of business in June 2020. Realized gains on equity securities decreased $23,000, or 56.1%, to $18,000 for the quarter ended June 30, 2021 as compared to $41,000 for the quarter ended June 30, 2020 due to decreases in the fair market value. Investment services commissions decreased $27,000 to $0 for the quarter ended June 30, 2021 because we sold the investment services book of business in June 2020. Banking fees and service charges increased $59,000, or 17.4%, to $398,000 for the quarter ended June 30, 2021 from $339,000 for the quarter