Also known as: First Interstate Bank
First Interstate Bank is a regional bank headquartered in Billings, Montana, and a subsidiary of First Interstate BancSystem. It serves customers across the Northwest and Mountain West, with branches in Montana, Wyoming, Idaho, Oregon, Washington, South Dakota, and other states.
For individual customers, First Interstate Bank commonly offers checking and savings accounts, home mortgages, personal loans, auto loans, and agricultural loans. The bank provides both in-branch service and digital banking through its mobile app and online platform.
For businesses, First Interstate provides commercial loans, commercial real estate financing, agricultural loans, business checking and savings, SBA lending, and treasury management. Agricultural lending is a recognised area of the bank's activity, reflecting the farming and ranching communities in its geographic markets.
For home buyers, First Interstate Mortgage offers conventional and other loan products. Personal and auto loans are available for qualifying customers.
First Interstate Bank serves some rural and smaller-population markets where banking access may be more limited. The bank has positioned itself as a community-focused institution across its broad geographic footprint in the Mountain West and Northwest.
First Interstate Bank serves some of the more geographically remote communities in the Mountain West and Northwest, where access to banking may be more limited. The bank is publicly traded and has grown through acquisitions across the region. Agricultural and ranch lending are recognised product areas for customers in farming and ranching communities.
First Interstate Bank is FDIC-insured and deposits are covered up to applicable limits. Rates, fees, and product availability vary by individual circumstances and location.
Quick info
Bank
First Interstate Bank
First Interstate BancSystem, Inc.
FDIC-insured.
2026-06-06
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Personal and business banking; mortgages; commercial loans; agricultural loans
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Date checked
2026-06-06
How do I make a complaint about First Interstate Bank?
Start with First Interstate Bank's internal complaints process. If unresolved, you can submit a complaint to the CFPB at consumerfinance.gov/complaint. Depending on the type of company, your state attorney general or banking regulator may also be relevant.
Is First Interstate Bank regulated in the US?
Use the NMLS Consumer Access tool at nmlsconsumeraccess.org to check licensing. For banks, check the FDIC BankFind Suite. For credit unions, check the NCUA Credit Union Locator. Ask Fin includes regulatory reference numbers where publicly available.
How do I find First Interstate Bank's official contact details?
Always use the contact details on the company's official website. Do not use numbers or emails received in unsolicited calls or messages. Verify the website by checking the NMLS or FDIC/NCUA databases if in doubt.
What should I do if I think First Interstate Bank has treated me unfairly?
Document everything in writing. Contact the company's complaints team first. If not resolved, submit a complaint to the CFPB or your state attorney general. The NFCC (1-800-388-2227) can provide free guidance for debt-related issues.
Where can I get free help with a First Interstate Bank issue?
Contact the CFPB (consumerfinance.gov), call 211 for local resources, or contact the NFCC (nfcc.org or 1-800-388-2227) for debt and budget help. For legal issues, Legal Services Corporation (lsc.gov) provides free legal aid.
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