Skip to main content
Holdings

First Interstate Bank

Billings, Montana

Routing Number
125102430

Bank Details

Institution Name
First Interstate Bank
Routing Number (ABA/RTN)
125102430
Status
Active — Receives ACH Transfers

Address

P O BOX 30918
Billings, MT 59116-0918

Use This For

  • ACH Direct Deposit
  • ACH Payments & Bill Pay
  • Tax Refund Direct Deposit
  • Wire Transfers (verify with bank)

Looking for a business bank account with no monthly fees?

Holdings is free business checking — open in about 10 minutes.

Open free account →

Get it done now — free tools from a real finance platform

Built by Holdings \u2014 the banking + accounting platform that keeps businesses and nonprofits audit-ready. Free forever, no account needed. Connect banking and let your books run themselves when you\u2019re ready.

See all free tools \u2192

Where to Find This Routing Number

Routing number 125102430 appears at the bottom-left of checks issued by First Interstate Bank.

Check No. 1001
125102430
← Routing Number
0001234567
Account Number
1001
Check #

Frequently Asked Questions

What is the routing number for First Interstate Bank?
The routing number for First Interstate Bank in Billings, Montana is 125102430. This ABA routing number can be used for ACH transfers, direct deposits, and wire transfers. Always verify with your bank before initiating a transfer.
Is routing number 125102430 valid?
Yes, routing number 125102430 is an active, valid ABA routing number for First Interstate Bank located in Billings, Montana. This information is sourced from the Federal Reserve's E-Payments Routing Directory.
Can I use 125102430 for wire transfers?
Routing number 125102430 is registered for First Interstate Bank in the Federal Reserve's ACH directory. While many banks use the same routing number for both ACH and wire transfers, some large banks have separate wire routing numbers. Contact First Interstate Bank directly to confirm.
Where is First Interstate Bank located?
First Interstate Bank (routing number 125102430) is located at P O BOX 30918, Billings, MT 59116-0918. You can reach them at (406) 237-2951.
What is routing number 125102430 used for?
Routing number 125102430 identifies First Interstate Bank for electronic transactions including: ACH direct deposits (payroll, tax refunds, government benefits), ACH payments (bill pay, recurring transfers), wire transfers (domestic bank-to-bank), and check processing.

You found your routing number. Now find your books.

Holdings connects to First Interstate Bank (or any bank) and auto-categorizes every transaction into real books — plus invoicing and donation tracking, all in one dashboard. No spreadsheets. No QuickBooks subscription tax. From $19/mo.

Start free

Related Routing Numbers

Setting up a payment? Get the books done too.

If you're looking up First Interstate Bank's routing number, you're moving money — invoicing a client or paying a vendor. With Holdings, the bank is the books: get paid and it's already recorded, no separate accounting tool, no month-end reconciliation.

Your bank

  • 0.01% APY
  • Monthly fees
  • No accounting tools

Holdings

  • 1.75% APY
  • $0 fees
  • Accounting from $25/mo
  • FDIC to $3M

The switch takes ~30 minutes. The savings start immediately.

Not ready to switch? Use a free tool while you're here.

No account needed — send a professional invoice or fill out a W-9 in seconds.

Related Resources