service charges and fees increased $20,000 to $87,000, while brokerage commissions decreased $13,000 to $234,000. The increase in net gain on sale of loans was primarily due earning higher agent fees on loans sold to the Federal Home Loan Bank of Chicago in the three months ending December 31, 2019, than in the three months ended December 31, 2018, while the increase in mortgage banking income, net, was due to a larger increase in the valuation of mortgage servicing rights in the three months ended December 31, 2019 than in the three months ended December 31, 2018. The increase in insurance commissions was due to higher commissions earned in the three months ended December 31, 2019, and the increase in other service charges and fees was due to an increase in the number of fees charged in the three months ended December 31, 2019. The decrease in brokerage commissions reflects decreased activity in the three months ended December 31, 2019.
Noninterest Expense. Noninterest expense decreased $64,000, or 1.5%, and was $4.3 million for both the three months ended December 31, 2019 and the three months ended December 31, 2018. The largest components of this decrease were other expenses, which decreased $85,000, or 15.0%, federal deposit insurance, which decreased $43,000, or 100.0%, and audit and accounting services, which decreased $27,000, or 60.0%. These decreases were partially offset by increases in equipment expense, which increased $47,000, or 13.8%, and professional services, which increased $61,000, or 64.9%. Other expenses decreased due to a decrease in expenses related to the foreclosed assets held for sale during the three months ended December 31, 2018. The federal deposit premium decreased as a result of receiving an FDIC small bank assessment credit in the three months ended December 31, 2019, while the decrease in audit and accounting was due to a slight change in the timing of the audit billing process. The increase in equipment expense was due to higher core processing and maintenance costs in the three months ended December 31, 2019, and the increase in professional services was due to additional legal services received during the three months ended December 31, 2019.
Income Tax Expense.We recorded a provision for income tax of $372,000 for the three months ended December 31, 2019, compared to a provision for income tax of $279,000 for the three months ended December 31, 2018, reflecting effective tax rates of 27.8% and 26.2%, respectively.
Asset Quality
At December 31, 2019, ournon-accrual loans totaled $270,000, including $191,000 inone- to four-family loans, $6,000 in commercial real estate loans, $17,000 in home equity lines of credit, $48,000 in commercial business loans, and $8,000 in consumer loans. At December 31, 2019, we had sixone- to four-family loans totaling $296,000 and one commercial business loan for $30,000, which were delinquent 90 days or greater and still accruing interest.
At December 31, 2019, loans classified as substandard equaled $3.1 million. Loans classified as substandard consisted of $1.6 million inone- to four-family loans, $274,000 in multi-family loans, $280,000 in commercial real estate loans, $17,000 in home equity lines of credit, $909,000 in commercial business loans and $8,000 in consumer loans. At December 31, 2019, no loans were classified as doubtful or loss.
At December 31, 2019, watch assets consisted of $1.1 million in commercial real estate loans, $137,000 in home equity lines of credit, and $1.6 million in commercial business loans.
Troubled Debt Restructurings. Troubled debt restructurings include loans for which economic concessions have been granted to borrowers with financial difficulties. We periodically modify loans to extend the term or make other concessions to help borrowers stay current on their loans and to avoid foreclosure. At both December 31, 2019 and June 30, 2019, we had $1.5 million of troubled debt restructurings. At December 31, 2019 our troubled debt restructurings consisted of $1.4 million inone- to four-family loans, $2,000 in commercial real estate loans, and $18,000 in home equity lines of credit.
Foreclosed Assets. At December 31 2019, we had $435,000 in foreclosed assets compared to $778,000 as of June 30, 2019. Foreclosed assets at December 31, 2019 consisted of $213,000 in residential real estate properties, $219,000 in commercialnon-occupied property, and $3,000 in business assets, while foreclosed assets at June 30, 2019 consisted of $539,000 in residential real estate properties, $219,000 in commercialnon-occupied property, and $20,000 in business assets.
45