Total non-accrual loans at December 31, 2022 were $10.6 million, or 0.61% of total loans, compared to $12.3 million, or 0.76% of total loans at September 30, 2022 and $6.1 million, or 0.48% of total loans, at December 31, 2021. The allowance for loan losses as a percentage of total non-accrual loans amounted to 136%, 105% and 153% at December 31, 2022, September 30, 2022 and December 31, 2021, respectively.
The Company’s operating efficiency ratio was 49.6% for the three months ended December 31, 2022 versus 46.8% a year ago. The increase in the operating efficiency ratio was due to a $1.0 million decrease in non-interest income (primarily gain on sale of loans held-for-sale).
Critical Accounting Policies, Judgments and Estimates - To prepare financial statements in conformity with U.S. GAAP, the Company’s management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. Critical accounting estimates are accounting estimates where (a) the nature of the estimate is material due to levels of subjectivity and judgment necessary to account for highly uncertain matters or the susceptibility of such matters to change, and (b) the impact of the estimate on financial condition or operating performance is material.
The Company considers the determination of the allowance for loan losses its most critical accounting policy, practice and use of estimates. The Company uses available information to recognize probable and reasonably estimable losses on loans. Future additions to the allowance may be necessary based upon changes in economic, market or other conditions. Changes in estimates could result in a material change in the allowance. The allowance for loan losses is increased by a provision for loan losses charged against income and is decreased by charge-offs, net of recoveries. Loan losses are recognized in the period the loans, or portion thereof, are deemed uncollectible. The adequacy of the allowance to cover any inherent loan losses in the portfolio is evaluated on a quarterly basis.
Financial Condition – Total assets of the Company were $2.0 billion at December 31, 2022 versus $1.8 billion at September 30, 2022. Total loans at December 31, 2022 were $1.7 billion, compared to total loans of $1.6 billion at September 30, 2022. Total deposits were $1.5 billion at December 31, 2022 and September 30, 2022. Total borrowings and subordinated debt at December 31, 2022 were $262.9 million, including $224.8 million of outstanding FHLB advances, compared to $126.3 million at September 30, 2022.
For the three months ended December 31, 2022, the Company’s loan portfolio, net of sales, grew by $123.3 million to $1.7 billion. At December 31, 2022, the residential loan portfolio amounted to $576.5 million, or 33.0% of total loans. Commercial real estate loans, including multi-family loans and construction and land development loans, continue to make up a greater proportion of our loan portfolio and totaled $1.1 billion or 64.3% of total loans at December 31, 2022. Commercial loans, including PPP loans, totaled $46.2 million or 2.6% of total loans.
Total deposits were $1.5 billion at December 31, 2022 and September 30, 2022. Core deposit balances, which consist of demand, NOW, savings and money market deposits, represented 74.4% and 77.8% of total deposits at December 31, 2022 and September 30, 2022, respectively. At those dates, demand deposit balances represented 13.1% and 14.3% of total deposits. Beginning in late 2020, we began a municipal deposit program. The program is based upon relationships of our management team, rather than bid based transactions. At December 31, 2022, total municipal deposits were $383.6 million, representing 25.3% of total deposits, compared to $416.9 million at September 30, 2022, representing 27.3% of total deposits. The rate on the municipal deposit portfolio was 2.66% at December 31, 2022.
Borrowings at December 31, 2022 were $238.3 million, including $8.5 million in PPPLF funding, versus $101.8 million, including $9.0 million in PPPLF funding at September 30, 2022. PPPLF borrowings declined as borrowers had received forgiveness or have made payments on PPP loans. At December 31, 2022, the Company had $224.8 million of outstanding FHLB advances as compared to $92.8 million at September 30, 2022.