First Interstate Bank is a regional bank headquartered in Billings, Montana. It offers a variety of financial services, including personal banking, business banking, and investment services. The bank operates branches primarily in the Western United States, focusing on providing customer-friendly banking solutions. Founded in 1968, First Interstate Bank has grown through a series of mergers and acquisitions. It is known for its commitment to community involvement and customer service. The bank is a member of the FDIC, ensuring that deposits are protected up to the insured limit.