First Interstate Bank specializes in providing financial services to its clients. Based in Billings, Mont., it offers an array of services under various categories, such as personal banking, business banking and corporate banking. Some of its personal banking services include online services, checking accounts, savings accounts, home loans, credit cards, overdraft protection and escrow services, to name a few. First Interstate Bank is a member of the Federal Deposit Insurance Corporation (FDIC) and an Equal Housing Lender.