United States
Montana: what the state takes
Montana charges its own income tax on top of federal tax. Here is the rate, the return, the date and where the official rules live.
Agency page last read 11 September 2026.
State rate
Banded
2025 Montana bands, deduction matching the federal one
Resident return
Form 2
Montana Department of Revenue
Due
15 April, following the federal deadline
Weekends and holidays can push it on
Try a figure
Yearly income
How you file
Montana tax
$3,287
Top state rate you touch
5.9%
- Kept before federal tax$57,861
- Federal income tax$13,852
- Montana tax$3,287
Band by band
State deduction taken off first: $15,000. Taxed amount: $60,000.
- $0 to $21,100 at 4.7%$992
- $21,100 to above at 5.9%$2,295
Filing in Montana
- Who collects it
- Montana Department of Revenue
- Return
- Form 2
- Deadline
- Usually 15 April, following the federal deadline
Federal comes on top
Whatever your state does, the IRS wants Form 1040 by 15 April, plus Social Security and Medicare through your wages or self employment tax. State tax paid can sometimes be deducted federally if you itemise, within a yearly cap.