First Interstate BancSystem, Inc. is a financial holding company headquartered in Billings, Montana. It operates as a holding company for First Interstate Bank, a community bank that provides a range of banking products and services to individuals, businesses, municipalities, and other entities in the United States. The bank offers personal banking services, such as checking and savings accounts, loans, mortgages, and credit cards; business banking services, including business checking and savings accounts, loans and lines of credit, merchant services, and cash management services; and wealth management services, such as investment management, trust and estate services, and retirement planning services. First Interstate BancSystem, Inc. was founded in 1971 and is headquartered in Billings, Montana.