Your hub for Montana taxes: state income tax (4.7% to 5.9%), plus free calculators for take-home pay, self-employment tax, quarterly estimates, and salary conversion.
Last updated: May 2026 · Data: IRS, BLS, Montana Department of Revenue
Montana levies a state income tax (4.7% to 5.9%) that is withheld from wages on top of federal tax and FICA. Montana has no sales tax, joining Alaska, Delaware, New Hampshire, and Oregon. The state simplified its income tax to two brackets in 2024. Montana also has no local option sales taxes.
| Tax | 2026 Rate / Detail |
|---|---|
| Montana State Income Tax | 4.7% to 5.9% |
| Montana State Sales Tax (base) | None |
| Federal Income Tax | 10% to 37% (progressive brackets) |
| Social Security | 6.2% on first $176,100 |
| Medicare | 1.45% on all wages (plus 0.9% above $200,000) |
| Federal Standard Deduction (Single / MFJ) | $15,000 / $30,000 |
| Minimum Wage | $10.55 / hour |
| State Tax Authority | Montana Department of Revenue |
Montana has a state income tax. The 2026 rate is 4.7% to 5.9%. This applies on top of federal income tax and FICA (Social Security and Medicare) withheld from your pay.
For 2026, Montana income tax is 4.7% to 5.9%. Montana has no sales tax, joining Alaska, Delaware, New Hampshire, and Oregon. The state simplified its income tax to two brackets in 2024. Montana also has no local option sales taxes.
A Montana paycheck has federal income tax, Montana state income tax (4.7% to 5.9%), Social Security (6.2% up to $176,100), and Medicare (1.45%) withheld. Try the take-home pay calculator for a personalized net-pay estimate.
Yes. Self-employed workers in Montana generally make quarterly estimated payments to the IRS and to the state if they expect to owe tax. The quarterly estimated tax calculator estimates each payment and the due dates.
Montana has no statewide sales tax.