Former Bank of the Cascades Clients:

If you haven’t already, be sure to update the phone number for First Interstate Bank’s Client Contact Center (1-855-342-3400). The phone numbers previously used to access Bank of the Cascades’ Customer Support Center will not work as of March 6, 2018.

Support Center


M-F, 7:30am-7:00pm MST and Sat 10:00am-2:00pm MST

Frequently Asked Questions

Routing Number


Telephone Banking

Enjoy the convenience of First Interstate Bank's 24 Hour Day & Night Telephone Banking.

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Report Lost/Stolen Card

Report your lost or stolen Credit/ATM/Debit card. Select your card from our lineup to get started.

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Debit Card Dispute Form

Fill out our convenient form to submit any dispute items on your ATM or Debit Card.


Wire Transfer Dispute Form

Fill out our convenient form to submit a wire transfer dispute.


Verification of Account Form

Third parties requesting account balance information to determine eligibility for loans or government subsidies may obtain information and form here.


Contact Form

Send us any general questions or comments. If you wish to include sensitive information, please login to your Online Banking account to send us a secure message.


Report Fraud Activity

Report any suspicious email, text message, or website to our corporate security department. Learn who to contact if your identity has been compromised.



Easily view all our disclosures and other important documents online in one easy location.


System Requirements

View a complete listing of system requirements for all of our online services.

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Online Product Tour

View an entire list of our product and service tours to learn more about each one.


Switch Kit

Switch your account(s) to First Interstate Bank in three easy steps.

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