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iAdvertiser Disclosure
Advertiser Disclosure
Some institutions listed may have a business relationship with MonitorBankRates. Our proprietary systems independently track and verify all rates. Advertiser relationships do not influence our Safety Ratings, Star Ratings, Texas Ratio calculations, or the rates shown.
 First Interstate Bank Rates & Review September 2026
Content reviewed by
Brian McKay
Brian McKayFounder & Data ArchitectExpertise
Brian is the Founder of MonitorBankRates.com. For over 18 years, he has utilized his background in enterprise infrastructure to engineer proprietary systems that track rates from over 8,000 financial institutions.
Read Full Bio →
Editorial Disclosure
The rates displayed are actual, verified rates sourced directly from the official websites of banks and credit unions. Our editorial content is independent of any advertiser relationships.
✓Fact Checked
Rates Last Updated and Verified: September 23, 2026
First Interstate Bank rates are not currently in our database, but you can compare rates from other banks and credit unions we track: 12-month CD rates are currently at 2.85%, 6-month CD rates at 2.75% and 3-month CD rates at 2.56%. Savings rates are at 0.89% and money market rates are at 1.22%. Mortgage rates on 30-year fixed loans are around 7.01%. These rates come from our rate database, not First Interstate Bank, and you can see how they compare in the First Interstate Bank rate tables below. MonitorBankRates evaluates the financial stability of First Interstate Bank with a 5.0 Star Rating, an A+ Overall Health Grade, and a Texas Ratio of 5.08%. Database rates last updated and verified on 09/23/2026. First Interstate Bank money market rates, and other rates, are continually updated to reflect market conditions. We recommend checking back frequently to get the best money market rates and other rates available. Have you opened an account or have any experiences at First Interstate Bank? Share your experience about First Interstate Bank by leaving a review below, or read customer reviews before you decide to use First Interstate Bank. 
First Interstate Bank Home Equity & HELOC
Financial Health HistoryFirst Interstate Bank’s Texas Ratio stayed near 4.62% in Q3 2023 to 5.08% in Q2 2026, so its financial health has held steady at a healthy level over the past 12 quarters. Over the same period its Star Rating moved from 5.0 to 5.0. Lower Texas Ratios are healthier; the green zone below the amber 15% line is where a bank must stay to qualify for the MBR Verified Healthy badge. Hover over or tap a point for that quarter’s figures. Swipe the chart sideways to see every quarter.
Texas Ratio, left axis (lower is healthier)MBR Star Rating, right axis (1 to 5)Health Grade15% Verified Healthy limit (green zone below = healthy)
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How to read this chart: the two lines move in opposite directions by design. The Texas Ratio (blue) measures trouble, so a rising blue line means more non-performing assets against capital. The Star Rating (green) and Health Grade chips measure strength, so they fall when the Texas Ratio climbs and recover when it drops. Show the quarterly figures
Source: FDIC call reports, MonitorBankRates analysis. Ratings shown are recomputed for each quarter with the current methodology and exclude member reviews.
Methodology & Data SourcesMonitorBankRates Star Rating: Our rating for First Interstate Bank is derived from comprehensive financial data published quarterly by the FDIC. Our proprietary rating system evaluates financial stability (including the Texas Ratio and capitalization) and combines it with customer feedback (user reviews) to help you make informed banking decisions. Texas Ratio: We calculate the Texas Ratio using standard industry methodology. This ratio compares the bank's non-performing assets to its tangible common equity and loan loss reserves to assess financial health. Rate Data Aggregation: We gather First Interstate Bank rates using proprietary online rate aggregation technology. Our systems scan constantly to provide the most recent rates available to our visitors.
Disclaimer: Interest rates are variable and subject to change without notice. While we strive for accuracy, rates can change rapidly based on market conditions.
It is always advisable to check with First Interstate Bank's official website for the most current offers and terms.
Bank Profile & Overview
Institution Name
First Interstate Bank
Bank Holding Company
FIRST INTRST BANCSYSTEM
Address
401 N 31st St,
Billings, MT 59101 · Yellowstone
FDIC Certificate #
1105
Established
19161009
FDIC Insurance Date
19340101
Domestic Offices
274
Total Branches
274
Regulator
FED
FDIC Insured
✓ Yes — Up to $250,000
Financial Health & AssetsA+
Overall Health Grade
Score: 97/100
5.0
Exceptional
Out of 5.0 Stars
5.08%
Texas Ratio
Nat'l avg: 5.85%
Return on Assets (ROA)
1.2069%
Return on Equity (ROE)
9.6100%
Non-Performing Loans (NPL)
0.62%
Total Assets
$25,794,971,000
Total Deposits
$21,734,129,000
Equity Capital
$3,251,149,000
Net Income
$158,359,000
Headquarters
Billings
Total Branches and Offices
274
Source: FDIC | Last Updated 06/30/2026
Customer ReviewsNancy Naus
March 12, 2025
Why are interest rates on CD’s lower at First Interstate Bank than any other bank in Sheridan, Wy. ,and less than all Credit Unions? Would like to leave my CDs there but every other bank has better rates,
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Add Your Rating and Review for First Interstate Bank
Frequently Asked Questions About First Interstate BankHow many branches does First Interstate Bank operate?First Interstate Bank currently maintains approximately 274 branch location(s). Physical branches allow members to access in-person services such as notary consultations and safe deposit boxes. Is there a first-time homebuyer program?Currently, First Interstate Bank does not list a specific first-time homebuyer program, but they provide a range of mortgage and home equity products to assist members with property financing. Are credit management and repair services offered?While formal credit repair services are not currently listed, First Interstate Bank provides members with tools to manage their accounts and build a solid financial history. Does First Interstate Bank offer online and mobile banking?Most modern institutions like First Interstate Bank provide digital access. This includes the ability to check balances, transfer funds, deposit checks via mobile app, and view statements online. You can usually find these services at their official website: https://www.firstinterstatebank.com. Compare to Other Banks
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