First Interstate BancSystem Inc, headquartered in Billings, Montana, is a banking institution offering a wide array of financial services. It caters to individuals, businesses, and municipalities, providing checking, savings, and time deposits, along with real estate, consumer, commercial, and agricultural loans. The company also delivers trust, investment management, insurance, and custodial services. Emphasizing digital convenience, it offers online and mobile banking solutions. Established in 1971, First Interstate BancSystem has grown to support various sectors including agriculture, healthcare, and technology.