Guaranty Financial Corporation operates as the bank holding company for Guaranty Bank that provides various banking services in Wisconsin, Illinois, Michigan, Minnesota, and Georgia. It accepts various checking and savings accounts, certificates of deposit, money market accounts, and individual retirement accounts. The company also offers mortgage loans; and debit and credit cards, online and mobile banking, bill pay, direct deposits, payroll, and merchant services. The company was founded in 1923 and is based in Glendale, Wisconsin.