Columbia Financial, Inc. operates as a bank holding company for Columbia Bank that provides banking and other financial services to businesses and consumers in the United States. The company offers commercial loans, including multifamily and commercial real estate, commercial business, and construction loans; residential loans, such as one-to-four family residential real estate and one-to-four family residential loans; and consumer loans, which includes home equity loans and advances, as well as automobile, personal, unsecured, and overdraft lines of credit. It also provides deposit products, including non-interest and interest-bearing demand accounts, savings and club deposits, money market accounts, and certificates of deposit.