Serving Montanans since 1919 - Find Us

Ourbank Blog  |    |  
Welcome Teton Banks!- Learn More

Cards that Work for You

Credit cards for your personal and business needs!  First Security Bank customers can apply online for a Personal Platinum, Rewards, or Secured card.  Business card applications available at your local branch.

Show Your School Spirit

Choose a school logo debit card and we will donate $5 to that school!  Designs for public high schools in Bozeman, Belgrade, Fort Benton,  West Yellowstone, Three Forks, and Big Sky are available. Fairfield and Choteau designs coming soon!

Fraud Defender

ID Theft Protection with credit monitoring services, resolution assistance, and expense reimbursement.  Choose the monthly package that's right for you.

Montana Home Loans

Success can mean a new home for your family, and we’re here to help.
Check Our Competitive Rates »

Business Solutions

Photo of Montana rancher

Whether a commercial loan or real estate, or agriculture loan, First Security Bank's lending expertise and local loan decisions create a tailored solution for your business needs.

Home Loans

Making it a home

Laying the groundwork for your new home is what we do.  Whether home mortgage, building lot purchase, or construction loan, we have a program to help.  Refinancing and home equity loan solutions, too.

Mobile Banking

Photo of woman using mobile app

Deposit checks, pay bills, transfer it all wherever your adventures take you.  More details here, or contact an Account Specialist for more information.