Attention Treasury Solutions Clients

Business Online Banking ACH files must be received by Thursday, February 14 in order to settle before the upcoming federal holiday (Washington’s Birthday). ACH files received on Friday, February 15 will not settle until Tuesday, February 19.

First Time Login Setup

Welcome to First Interstate Bank. For your convenience, your Inland Northwest Bank accounts have been automatically transitioned to First Interstate and are now accessible through First Interstate’s Online Banking platform.

Test your browser to ensure it is compatible with Online Banking.

Need help? Call our support center: 855-342-3400

Mon - Fri 7:30 a.m. to 7 p.m. MST (6:30 a.m. to 6 p.m. PST), Sat 10 a.m. to 2 p.m. MST (9 a.m. to 1 p.m. PST) or Contact Us Online.