Montana Paycheck Calculator (2026)
Work out a Montana paycheck: federal income tax withholding (IRS Pub 15-T, 2026), Social Security and Medicare, Montana withholding, state payroll deductions and local taxes. The math runs in your browser; nothing is uploaded.
What this page covers
- State income tax is worked out with the Montana 2026 method: Withholding tax formula (Montana DOR Employer Guide, 2026).
- If your city or county has its own wage tax, enter its rate in the "Other local tax" box.
How to use it
- Open the calculator from this page; Montana is chosen for you and the tax section opens.
- Coming back later? Tick Also estimate my take-home pay, then open Work it out from my pay details.
- Enter gross pay per check, your W-4 and state form choices, and any pre-tax deductions.
Open the calculator for Montana
Source
Rates and formulas come from the official 2026 publication: Montana withholding source, plus IRS Pub 15-T. If your employer uses a different but allowed method (for example wage-bracket tables), amounts can differ by a few cents.
Frequently asked questions
Does Montana have state income tax on paychecks?
Yes. Montana employers withhold state income tax. PayGuess uses the Montana 2026 withholding method to estimate it.
How accurate is the Montana estimate?
It follows the official 2026 formula for the choices you enter and was checked against the worked examples and wage-bracket tables in the official booklets where they exist. Real paychecks can differ if your employer uses another allowed method, or if you have deductions you did not enter.
Which local taxes are included?
PayGuess has no built-in local taxes for this state. If your city or county has one, enter its rate in the Other local tax box.
Is this my final tax bill?
No. It estimates withholding from one paycheck. Your actual tax is settled when you file your return.
Estimates of what an employer would withhold under the published 2026 rules. Not tax advice, and not your final tax bill. Your pay stub is the record.