MainStreet Bancshares, Inc. operates as the parent entity for MainStreet Bank, which delivers a comprehensive suite of financial products and services. Its diverse offerings cater to individuals, small to mid-sized businesses, and professional service organizations. The bank provides various deposit accounts, including checking (both standard and interest-bearing, for consumers and businesses), savings, money market, NOW, sweep accounts, and certificates of deposit. Beyond core banking, it offers cash management, wire transfer, check imaging, remote deposit capture, and courier services, alongside internet bill payment and robust online and mobile banking solutions. Lending activities encompass commercial loans for government contracts, plant and equipment, general working capital, contract administration, and acquisitions. Furthermore, MainStreet Bank extends financing for commercial, construction, and residential real estate, as well as consumer loans such as term loans and overdraft protection. Debit and credit cards are also available. Incorporated in 2003 and based in Fairfax, Virginia, the company maintained six branches in Herndon, Fairfax, McLean, Leesburg, Clarendon, and Washington D.C., and supported access to 55,000 automated teller machines as of March 18, 2022.