Saturday, August 18

Online Banking will undergo routine maintenance from 10:30 p.m. Mountain on Saturday until 2:30 a.m. Mountain on Sunday. The system may be unavailable during this time. Thank you for your patience.

Contact Us

Please fill out the following form, which will be emailed directly to our customer support. Let us know about any questions or comments you may have. Please provide us with as much detail as you can, and we'll get back to you.

Note: If you are sending a message containing account numbers or other private financial information, please send it via a secure message within Online Banking

To send a secure message, please login to your Online Banking account. View our Support Center or Privacy Statement if you have questions about the types of information First Interstate Bank requests.

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Customer Information


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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).

Please ensure that you are not including any social security numbers or account numbers in this communication. Thank you.