Javascript Required

In order for the login to function correctly, Javascript must be enabled in your browser.

System Requirements

Online Banking Login

Looking for another login?

Now Accepting Applications for One Class at a Time

One Class

First Interstate Bank branches in Billings, Bozeman, Great Falls, and Helena are now accepting One Class at a Time applications for the 2013-2014 school year.

Now Accepting Applications for 1+1 Program

1 + 1

First Interstate Bank and NewsCenter1 in Rapid City have formed a partnership to show our commitment to education through our “1+1” weekly program.

Mar 05, 2014

Mike Peck and Laramie Market Awarded at Chamber Banquet

news image First Interstate Bank was honored with two awards at the 2013 Annual Laramie Chamber of Commerce Awards Banquet, held each year to recognize businesses and leadership success in the Laramie...

more ›

Feb 13, 2014

Customer Survey Coming Soon!

news image First Interstate will soon be undertaking a comprehensive survey of our customer base to get feedback on how we’re doing.

more ›

Feb 10, 2014

First Interstate BancSystem, Inc. Agrees to Acquire Helena-Based Mountain West Financial Corp.

news image First Interstate BancSystem, Inc., parent company of First Interstate Bank, and Mountain West Financial Corp., parent company of Mountain West Bank, National Association, announced today that...

more ›

Apr 15, 2014

New Automated Message MasterCard Scam

First Interstate Bank has received several notifications that customers and employees have received automated phishing calls. The calls state that the recipients MasterCard has been locked, and...

more ›

Apr 09, 2014 Not Vulnerable to Heartbleed Bug

With news that the Heartbleed Bug causes vulnerability in the OpenSSL cryptographic library, we wanted to assure you that your information with First Interstate Bank is still secure.

more ›

Apr 04, 2014

New Text Message Phishing Scam

First Interstate has received numerous reports of customers receiving phishing text messages informing them that their card has been deactivated. These fraudulent texts are coming from...

more ›