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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 equity | 9.61% |
| Net interest margin (YTD) | 3.55% |
| Equity to assets | 12.60% |
| Tier 1 leverage ratio | 9.42% |
| Uninsured deposits (share of deposits) | 36.4% |
| Noncurrent loans (share of loans) | 1.12% |
| Net charge-offs (share of loans) | 0.16% |
| Loans to deposits | 64.9% |
| Real estate loans (share of loans) | 82.6% |
Loan mix
| Category | Amount | Share | |
|---|---|---|---|
| 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)
| Period | Total assets | Deposits | Net 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)
| State | Branch deposits | Offices |
|---|---|---|
| Montana | $6.09B | 44 |
| South Dakota | $3.43B | 46 |
| Wyoming | $2.77B | - |
| Oregon | $2.43B | 33 |
| Iowa | $1.98B | 45 |
| Nebraska | $1.70B | 29 |
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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