How Montana withholding works
Montana’s 2026 formula is W = A + B × (G − C), where G is your pay for the period and A, B and C come from the table for your pay period and MW-4 filing status. For a single employee paid biweekly: nothing on the first $619, 4.7% up to $2,446 and $86 + 5.65% above.
The Department of Revenue publishes nine examples – for instance $2,950 biweekly single ($114), $5,950 biweekly married filing jointly ($232) and $4,950 biweekly head of household ($201) – and this calculator reproduces all of them.
Worked example: $60,000 in Montana
Single, $60,000 salary, paid every two weeks, Montana
Gross pay is $2,307.69 per paycheck. Federal income tax is $193 and Social Security and Medicare $177. Montana withholds $79. Take-home pay is $1,859 per paycheck, or $48,336 a year.
Take-home pay per paycheck$1,859.0726 paychecks a year
- Take-home pay per year
- $48,336
- Federal income tax withheld
- $193.08
- Montana income tax withheld
- $79.004.7% / 5.65%
| Item | Per paycheck | Per year |
|---|---|---|
| Gross pay | $2,307.69 | $60,000.00 |
| Federal income tax | −$193.08 | −$5,020.08 |
| Social Security (6.2%) | −$143.08 | −$3,720.08 |
| Medicare (1.45%) | −$33.46 | −$869.96 |
| Montana income tax | −$79.00 | −$2,054.00 |
| Take-home pay | $1,859.07 | $48,335.88 |
At $100,000 a year, take-home pay is about $74,890 a year.