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Banks · Montana

First Interstate Bank

Billings, MT · FDIC Certificate #1105 · Chartered 10/0

Total assets
$25.79B
Total deposits
$21.73B
Total equity
$3.25B
Net loans
$14.10B
Branches (offices)
274
Net income (YTD)
$158.36M
Rank: #83 of 4,213 U.S. banks by assets · #2 of 35 in Montana. Assets changed -6.2% and deposits -5.6% over the year to June 30, 2026.
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Key ratios

Return on assets (YTD, annualized by FDIC)1.21%
Return on equity9.61%
Net interest margin (YTD)3.55%
Equity to assets12.60%
Tier 1 leverage ratio9.42%
Uninsured deposits (share of deposits)36.4%
Noncurrent loans (share of loans)1.12%
Net charge-offs (share of loans)0.16%
Loans to deposits64.9%
Real estate loans (share of loans)82.6%

Loan mix

CategoryAmountShare
Real estate loans$11.64B
82.6%
Commercial & industrial$1.38B
9.8%
Consumer / individual$494.30M
3.5%
Construction & development$576.12M
4.1%
Agricultural$357.27M
2.5%

Five-year trend (June snapshots)

PeriodTotal assetsDepositsNet income (year to date)Equity / net worth
Jun 2022$31.97B$26.86B$88.81M$3.34B
Jun 2023$30.92B$23.75B$134.48M$3.18B
Jun 2024$30.22B$23.14B$132.23M$3.18B
Jun 2025$27.49B$23.02B$136.44M$3.37B
Jun 2026$25.79B$21.73B$158.36M$3.25B

Where its branch deposits sit (FDIC Summary of Deposits)

StateBranch depositsOffices
Montana$6.09B44
South Dakota$3.43B46
Wyoming$2.77B-
Oregon$2.43B33
Iowa$1.98B45
Nebraska$1.70B29

Branch deposits are booked at the office that holds them, which is not always where the customer lives. Total across all offices: $21.73B.

Similar-sized banks

Customers Bank ($26.50B) · Provident Bank ($25.65B)

Source: FDIC BankFind - Call Report and institution data as of June 30, 2026; branch deposits from the FDIC Summary of Deposits (June 30, 2026). See methodology.

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