MainStreet Bank, the Member FDIC, is a community bank headquartered in Fairfax, Virginia and serving the Washington, DC metropolitan area. MainStreet has 55,000 free ATMs across the United States and in Canada, Mexico and the UK. MainStreet has added third party payments as a specialized service along with its robust suite of commercial and business services. Bank offers: Commercial Real Estate, Construction Lending, Government Contract Lending, Third Party Payment Services, Merchant Services, Lock Box, SBA Lending, Commercial Banking, Mobile Banking.