Montana (MT) Sales Tax Calculator (2026)
Calculate sales tax in Montana. The statewide base rate is 0% — Montana has no statewide sales tax. Enter an amount and add your local (county or city) rate to see the combined rate and total.
Example: with Amount (pre-tax) 100 · Local rate (county / city) 0 → Total with tax: $100.00.
Computed by the calculator below using its default values. Change any input to see your own numbers.
Montana tax snapshot
In Montana, the statewide sales-tax base rate is 0% — the 49th-highest of the 50 states + DC, versus a national average near 5.11%. By the other measures, Montana property tax is about 0.74% (the 34th-highest) and its sales-tax base is 0% (the 49th-highest); montana levies a state income tax. For context, New Jersey has the highest effective property tax (2.23%) and Hawaii the lowest (0.27%); California has the highest statewide sales tax (7.25%) and Oregon has none (0%).
Compare across Montana: Paycheck · Property tax · Sales tax.
Pre-tax vs. tax-included
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Check it outMontana has no statewide sales tax
Montana is one of a few states with no state-level sales tax, so the base rate is 0%. Some local jurisdictions may still levy their own tax — enter any local rate above to include it.
Sales tax by state
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How it’s calculated
Sales tax = purchase amount × (state base rate + local rate). Your combined rate is Montana’s state base rate plus any county or city tax you enter.
State base rate as of the latest published rates; local rates vary by jurisdiction and change over time. Confirm your local combined rate. Estimate only.
Results update as you type and are estimates, not professional advice — verify important decisions with a qualified professional.
Montana sales tax in 2026 at a glance
Montana has no statewide sales tax — one of five states (Delaware, Montana, New Hampshire, Oregon, and Alaska) without one. Special local resort-area taxes exist but are not counted here.
Source: Tax Foundation, “State and Local Sales Tax Rates, 2026” (rates as of January 1, 2026). Local averages are population-weighted.
Worked example
A $100 purchase in Montana has $0.00 in sales tax at the 0% base rate, for a $100.00 total before any local tax.
Common mistakes
- Adding only the state base rate and forgetting county or city taxes on top.
- Applying the rate to a tax-included total instead of the pre-tax price.
Frequently asked questions
Does Montana have a sales tax?
No statewide sales tax. Special local resort-area taxes exist but are not counted here.
Do I pay any sales tax when shopping in Montana?
Generally no state-level sales tax at checkout, though special local or excise taxes can apply to specific goods (lodging, prepared food, fuel).
Why does this calculator still let me add a rate?
So you can model a purchase in another state, or a special local levy, by entering the rate yourself.