Montana Sales Tax Calculator
Montana is one of five US states with no statewide sales tax in 2026, so most retail purchases have no sales tax added. There's no state or local general sales tax to calculate. Use the calculator below for any local or special taxes, or to remove tax from a total.
$100.00 total
Before tax: $100.00 · Sales tax: $0.00 (0%)
State & average combined rates: Tax Foundation 2026. Local rates vary by city/county — adjust the rate for an exact figure. How we calculate →
Montana has no statewide sales tax
Montana is one of just five states — Alaska, Delaware, Montana, New Hampshire and Oregon (the “NOMAD” states) — that levy no statewide general sales tax. That means the sticker price is usually what you pay at the register, with no percentage added on most goods.
Some narrow exceptions exist (for example, lodging, prepared meals or specific excise taxes in certain localities), so if a receipt does show a charge, switch the calculator to Remove tax mode and enter the rate to see the pre-tax amount.
How Montana sales tax is calculated
Sales tax is the price multiplied by the rate as a decimal. In Montana the general rate is 0%, so there's normally nothing to add. To work backwards from a total that already includes tax, divide by one plus the rate — the calculator's Remove tax mode does this in one step.
Montana sales tax — frequently asked questions
Does Montana have sales tax?
No. Montana is one of five states with no statewide general sales tax in 2026, so most purchases have no sales tax added. A few narrow local or excise taxes can apply to specific items like lodging or prepared food.
Why does Montana have no sales tax?
Montana funds its government through other taxes (such as income or property taxes) rather than a general sales tax. It is one of the “NOMAD” states — Alaska, Delaware, Montana, New Hampshire and Oregon — known for having no statewide sales tax.
How do I remove tax from a total in Montana?
If a receipt does include a local or special tax, switch the calculator above to “Remove tax”, enter the total and the rate, and it returns the pre-tax price and the tax included.
Sales tax calculators by state
National sales tax calculator · then pick any state:
Researched & verified by the Calcuris Data & Research Team. How we build and check our tools →