Mercantile Bank Corporation operates as the bank holding company for Mercantile Bank that provides commercial and retail banking services to small- to medium-sized businesses and individuals in the United States. The company accepts various deposit products, such as checking, savings, and term certificate accounts; time deposits; and certificates of deposit. It also provides commercial and industrial loans; vacant land, land development, and residential construction loans; owner and non-owner occupied real estate loans; multi-family and residential rental property loans; single-family residential real estate loans; home equity line of credit programs; consumer loans, such as new and used automobile and boat loans, and credit cards, as well as overdraft protection services; and residential mortgage and instalment loans. In addition, the company offers courier services and safe deposit boxes; and insurance products, such as private passenger automobile, homeowners, personal inland marine, boat owners, recreational vehicle, dwelling fire, umbrella policies, small business, and life insurance products.