Montana Income Tax Guide (2026)
Montana (MT) — wage income tax structure: progressive. Data status: simplified. Last verified 2026-07-20.
Calculator
Structure
progressive
Sample state tax*
$3,786.25
Marginal (state)
5.65%
Est. net after fed+FICA+state*
$57,806.25
*Illustrative single filer with $75,000 wages treated as AGI/taxable for state preview (no state deduction modeling). Federal uses the standard deduction. Not a filing worksheet.
Montana income tax rates and brackets
| Rate | Taxable income (single, cents→USD) |
|---|---|
| 4.70% | $0.00 – $47,500.00 |
| 5.65% | $47,500.01 and above |
Federal, state and FICA take-home breakdown
On the $75,000 single-filer sample: federal income tax $7,670.00, employee FICA $5,737.50, state income tax $3,786.25. Approximate taxable income after federal standard deduction ≈ $58,900 (federal only).
Notes and caveats
- Progressive brackets for TY2026. Joint thresholds are simplified (often ~2× single) unless noted; verify filing-status tables before filing. Top marginal rate ≈ 5.65%.
Official sources
Tax Foundation — 2026 state income tax rates and brackets . Always confirm with the Montana taxing agency before filing.