Montana Tax Brackets 2026
Data status: simplified. Last verified 2026-07-20.
| Rate | Single taxable income |
|---|---|
| 4.70% | $0.00 – $47,500.00 |
| 5.65% | $47,500.01 + |
- Progressive brackets for TY2026. Joint thresholds are simplified (often ~2× single) unless noted; verify filing-status tables before filing. Top marginal rate ≈ 5.65%.