The TellerScore is our own summary of the figures this institution reports publicly; it is not issued or endorsed by any government agency. It is not a prediction, and deposits within insurance limits are protected either way.

From Q2 2025 to Q2 2026, the score rose 3 points (59 → 62), mostly because the earnings component improved by 9 points.

Percentile against banks of similar size nationwide (100th = best among peers; for ratios where lower is better, the scale is flipped).

Similar-size banks in Montana

Yes. First Interstate Bank is an FDIC-insured institution (FDIC certificate #1105). Deposits are insured up to $250,000 per depositor, per insured bank, for each account ownership category.

An estimated 36.4% of deposits ($7.9B) are above the $250,000 FDIC insurance limit, close to the peer median of 38%. Insured balances are protected regardless of the score.

The tier 1 leverage ratio is 9.42%, above the 5% level regulators use as the "well capitalized" benchmark for this measure. Its total risk-based capital ratio is 15.46% (benchmark: 10%).

Check how much of your own balance is covered

First Interstate Bank lists 270 offices in 200 cities across 10 states. Most locations:

• Omaha, NE (8)
• Bend, OR (7)
• Billings, MT (7)
• Sioux Falls, SD (7)
• Lincoln, NE (5)
• Boise, ID (4)
• Medford, OR (4)
• Spokane, WA (4)
• Bozeman, MT (3)
• Coeur D Alene, ID (3)
• Great Falls, MT (3)
• Helena, MT (3)

All branch addresses and map

In 2025, First Interstate Bank reported 3,974 home-loan applications under HMDA (LEI 549300RFSMIRUODUVW59): 2,443 originated ($480,545,000 total), 1,036 denied, and 452 withdrawn or closed by the applicant. Its denial rate on decided applications was 29.4%, compared with 22.2% for all lenders nationwide.

Denial rates depend heavily on loan type and applicant mix and are not a measure of fairness or of your own odds.

Legal name

First Interstate Bank

Former names

First Interstate Bank of Billings, National Association; The First Interstate Bank of Commerce; Security Bank, N. A.; Security Trust and Savings Bank

Type

State-chartered bank (Fed member)

FDIC certificate #

1105

RSSD ID

659855

Primary regulator

FED

Holding company

First Intrst Bancsystem

Established

October 9, 1916

Headquarters

401 N 31st St, Billings, MT 59101

Website

www.firstinterstatebank.com

Employees

3,016