Columbia Banking System, Inc. operates as the bank holding company for Columbia Bank that provides banking, private banking, mortgage, and other financial services in the United States. The company offers deposit products, including business, non-interest-bearing checking, interest-bearing checking and savings, money market, insured cash sweep and other investment sweep solutions, and certificates of deposit. It also provides commercial lending products, such as commercial lines of credit and term loans, accounts receivable and inventory financing, international trade finance, commercial property loans, multifamily loans, equipment loans, commercial equipment leases, real estate construction loans, permanent financing, small business administration program financing, and capital markets services.