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ACH Schedule for Memorial Day

Business Online Banking ACH files must be received by Thursday, May 23, in order to settle before the upcoming federal holiday (Memorial Day). ACH files received on Friday, May 24, will not settle until Tuesday, May 28.

Treasury Assist

Treasury Assist is a tool dedicated to helping you quickly and directly contact Treasury Management for support. Complete the form below. To help us route your request, please select the options that best describe your needs. Support requests received after hours will be addressed the next business day.

You may also call Treasury Solutions Support at 888-833-3450, option 2, for assistance. Representatives are available Monday through Friday, 7:00 a.m. to 6:00 p.m. Mountain Time.

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Customer Information

Thank You,

At First Interstate Bank, our goal is to provide you with products and services of the highest quality.

We will review and respond to your submission within 1-2 business days (Monday-Friday).