Timberland Bancorp, Inc. is a bank holding company that operates Timberland Bank, providing retail and commercial banking services to individuals, families, and small-to-medium-sized businesses across western Washington through a branch network. The bank's core business revolves around gathering deposits in various forms—including demand, savings, and money market accounts—and deploying those funds into residential mortgages, commercial real estate loans, construction loans, and consumer loans, with real estate exposure comprising the majority of its loan portfolio. The company generates revenue primarily through net interest income on the spread between yields earned on loans and securities and the cost of deposits and borrowings, supplemented by non-interest income from service charges, ATM and debit card fees, loan servicing, and gains on secondary market loan sales.