Marathon Bancorp, Inc. is a bank holding company for Marathon Bank, providing banking products and services in the United States. It offers deposit accounts, including non-interest-bearing and interest-bearing checking, money market, savings, and certificate of deposit accounts. Its lending products include one-to-four family residential real estate, commercial real estate, construction, commercial and industrial, multifamily real estate, and consumer loans. The company also provides vehicle and equipment financing, Small Business Administration services, commercial checking, treasury management, and personal online and mobile banking. Founded in 1902, it is based in Wausau, Wisconsin.