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Home→Financial Institutions→First Interstate→Preparing your estate

How to name beneficiaries and fund a trust at First Interstate

Covers 7 deposit, 2 retirement, and 2 lending accounts — beneficiaries can be managed online

First Interstate

Subsidiary of First Interstate BancSystem, Inc.

firstinterstatebank.com →
First Interstate logo
Phone1-406-255-5000
Toll-Free1-855-342-3400
Emailpcbank@fib.com
Mailing Address

First Interstate Bank, 401 N 31st St, Billings, MT 59101

Telephone Banking
1-888-752-3341
WebsiteLearn more →

Wealth Management - Trust and Estates

Phone1-888-791-4075
WebsiteLearn more →

Death Claims

Phone1-855-342-3400
Toll-Free1-855-342-3400
Mailing Address

First Interstate Bank, 401 N 31st St, Billings, MT 59101

Verified Mar 2026

Preparing your First Interstate accounts for estate transfer involves two primary strategies: designating beneficiaries on individual accounts and, where supported, retitling accounts into a revocable living trust. Both approaches bypass probate, but they work differently depending on the account type.

With 11 product types, First Interstate offers a range of transfer options. Some accounts support Payable on Death (POD) designations, others can be retitled into a trust, and some require probate if no beneficiary is designated. The sections below break down each step.

Simple BankingBasic CheckingSelect CheckingPremier CheckingRegular SavingsMoney Market AccountCertificate of Deposit
1Log in to your First Interstate Bank online banking account
2Navigate to account settings or beneficiary management
3Select the account you want to add a beneficiary to
4Enter beneficiary information including full legal name, date of birth, and Social Security number
5Designate primary and contingent beneficiary allocations
6Review and submit the beneficiary designation
Online Portal →

Required Documents

  • Trust name, date established, and tax ID (EIN or SSN)

Special Requirements

  • Trust beneficiary designations may require visiting a branch or contacting the Client Contact Center
  • IRA beneficiary designations may require completion of a separate beneficiary form
  • Changes to beneficiary designations on trust accounts may require updated trust documentation

First Interstate

Subsidiary of First Interstate BancSystem, Inc.

firstinterstatebank.com →
First Interstate logo
Phone1-406-255-5000
Toll-Free1-855-342-3400
Emailpcbank@fib.com
Mailing Address

First Interstate Bank, 401 N 31st St, Billings, MT 59101

Telephone Banking
1-888-752-3341
WebsiteLearn more →

Wealth Management - Trust and Estates

Phone1-888-791-4075
WebsiteLearn more →

Death Claims

Phone1-855-342-3400
Toll-Free1-855-342-3400
Mailing Address

First Interstate Bank, 401 N 31st St, Billings, MT 59101

Verified Mar 2026

Estate planning documents for First Interstate customers

Free documents designed to protect your First Interstate accounts.

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SimplyTrust is not a law firm and does not provide legal advice, legal counsel, or attorney review. Information on this platform is for general informational purposes only. Use of SimplyTrust does not create an attorney-client relationship. You are solely responsible for all documents you create. For advice tailored to your circumstances, consult a licensed attorney in your state.

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