Serving Montanans since 1919 - Find Us

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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.

Insurance Questions?

First Security Insurance can help with business and personal insurance needs.  Montana residents can get an immediate health insuance quote.

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 »

Small Business Lending

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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.

Personal Deposits

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Let’s face it, sometimes it is hard to save. That is why First Security Bank offers savings accounts, CDs, and IRAs with low minimum balances and competitive interest rates.


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First Security Bank is proud to support non-profit organizations through donations and volunteerism. Offering Non-profit regular checking, loans, and money market accounts.