1st Source is the holding company for 1st Source Bank, which operates more than 60 banking offices in northeastern Indiana and southwestern Michigan. The bank provides checking, money market, savings, and individual retirement accounts, as well as certificates of deposit. The company's subsidiaries include 1st Source Insurance, a provider of general insurance through an agency in South Bend, Indiana; 1st Source Capital, a provider of small business capital; and Trustcorp Mortgage, a mortgage originator that operates eight offices in Indiana, Ohio, and Kentucky.