First Interstate Bank Online Banking Login

If you are a First Interstate Bank customer and already have an online banking account, it’s really easy to access your account and use all online banking services offered by Interstate. Follow the steps in order to complete the login.

How to Login

Step 1 – In order to login into your online banking account. Go the the bank’s homepage click on the small lock located on the right upper side of the page. Then select which kind of service you would like to login in to. Enter you Access ID, then verify your security image and passphrase, enter your password and you’ll be logged in.

** Bank’s Note: Starting August 31st, you’ll be able to sign in with only your Access ID and Passcode. You’ll no longer need to verify your security image and passphrase.



How to Enroll

Step 1 – If you have a First Interstate account but still have not enrolled into an online banking account, its easy to apply. Click on the link ´Enroll´ below the ´Online Banking Login´.


Step 2 – You’ll be directed to another page where you must fill in the blanks and click “Submit” to proceed with your online enrollment.

Required Information:

  • Email
  • Account Number
  • Account Type
  • Last four digits of SSN/Ta ID number/Telephone banking PIN