How Montana taxes your paycheck
Montana has two income tax rates in 2026: 4.7% and 5.65%. A single filer pays 4.7% on the first $47,500 of taxable income and 5.65% on the rest. For married couples filing jointly, the higher rate starts above $95,000.
Montana starts from your federal taxable income. That means your federal standard deduction ($16,100 if single, $32,200 for a married couple) is already taken off. There is no state disability or paid leave deduction and no local income tax.
For example, a single person earns $60,000 and puts $3,000 in a 401(k) and $2,000 toward health insurance. After the federal standard deduction, $38,900 is taxable. At 4.7%, Montana's tax is about $1,828.30 for the year.
Montana tax rates and rules for 2026
Montana has graduated rates from 4.7% to 5.65%.
| Taxable income | Rate |
|---|---|
| $0 to $47,500 | 4.7% |
| Over $47,500 | 5.65% |
| Taxable income | Rate |
|---|---|
| $0 to $95,000 | 4.7% |
| Over $95,000 | 5.65% |
| Taxable income | Rate |
|---|---|
| $0 to $71,250 | 4.7% |
| Over $71,250 | 5.65% |
- Starts from
- Federal taxable income (wages after the federal standard deduction)
- 401(k) contributions
- Lower your state taxable wages
Local taxes
No local income tax on wages.
What this estimate leaves out
- Starts from federal taxable income using the federal standard deduction only; itemized deductions and other federal deductions aren't included.
- Montana additions and subtractions to federal taxable income (such as the subtraction for filers 65 and older, and removing the federal qualified business income deduction), and credits such as the Montana earned income tax credit (20% of the federal credit starting in 2026).
- Long-term capital gains are taxed at lower rates (3.0% and 4.1%); this estimate covers wages only.
Frequently asked questions
What are Montana's income tax rates for 2026?
There are two: 4.7% and 5.65%. The 5.65% rate starts above $47,500 of taxable income for single filers, $71,250 for heads of household and $95,000 for married couples. In 2027 the top rate is set to drop to 5.4%.
Does Montana have a standard deduction?
Not a separate one. Montana begins with your federal taxable income, which already has the federal standard deduction taken out. So you get the federal amount, not a second state one.
Does Montana tax 401(k) contributions?
No. Traditional 401(k) and 403(b) contributions are left out of federal taxable income, so Montana leaves them out too. Roth contributions are taxed as normal pay.
Is there local income tax in Montana?
No. Montana cities and counties don't charge an income tax on wages.
Sources
- Montana Department of Revenue: Tax simplification (starting from federal taxable income)
- Montana Department of Revenue: HB 337 rate and bracket changes for 2026 and 2027
Figures checked 2026-10-25. The federal side uses the same 2026 rules as the main paycheck calculator, where the formula and method are explained. Found a problem? Tell us.