Montana Paycheck Calculator

Paycheck taxes in Montana

Montana has two brackets for 2026 — 4.7% up to $47,500 single / $95,000 joint and 5.65% above — computed from federal taxable income, so the federal standard deduction effectively applies. House Bill 337 cut the top rate from 5.9% and more than doubled the width of the lower bracket, with a further cut to 5.4% due in 2027.

Bonuses and supplemental wages in Montana

Bonuses and other supplemental wages are frequently withheld differently from regular pay, and states set their own rules. This calculator applies Montana's regular withholding to every dollar and does not model a separate supplemental rate, so a bonus paycheck can come out higher or lower than the figure above. Federal supplemental withholding is a flat 22% up to $1 million; for Montana's own treatment, check the state authority linked below.

For the federal half, which this site does model, compare what withholding takes from a bonus against what you actually owe — the 22% flat rate is withholding, not a tax bill, and the difference comes back at filing.

Montana vs. its neighbors

On a $100,000 salary you keep $74,891 in Montana — $4,289 less than in neighboring South Dakota, $3,591 less than in North Dakota, and $71 less than in Idaho.

Federal income tax and FICA are identical in every state, so the whole gap above is state income tax. Single filer, $100,000 of wages, no 401(k) or other pre-tax deductions, 2025 state tables. Local income taxes (city and county) are not included. Run your own salary through the calculator above, or on any state's page.

Neighbours are only part of the picture. The study behind these figures ranks what a $100,000 salary takes home in all 50 states, with Montana's row in place — the entire spread between best and worst is state income tax, since federal tax and FICA are identical everywhere.

A worked example at Montana's median income

Montana's median household income is $81,920 (2024, U.S. Census Bureau via FRED (real median household income)). Run through the same engine as the calculator above (single filer, taxes only):

That is an effective all-in tax rate of 22.9% at the median — your own number depends on filing status, 401(k), and benefits. Enter your salary above for the exact figure.

Common questions