Montana Sales Tax Calculator
Montana has no statewide sales tax. A few resort areas charge a local tax. City and county tax is extra, so the amount at the register can be higher.
Montana state rate 0%
Price
Total
$100.00
Net
$100.00
Sales tax
$0.00
Formula
Statewide sales tax on a price is the price times 0 divided by 100. This page does not add a city or county rate on top.
City and county tax is extra, so the amount at the register can be higher.
Removing sales tax uses the same statewide rate. Divide the tax-inclusive price by 1 plus the rate. Local tax is still not part of that figure.
Add: tax = amount × rate / 100. Remove: net = amount / (1 + rate / 100).
- amount The price you type.
- rate The Montana statewide rate, 0%. It is fixed on this page.
Worked example
A $100.00 price at a 0% statewide rate has $0.00 of state sales tax.
City and county tax is extra, so the amount at the register can be higher.
FAQ
How much is Montana sales tax on $100?
Montana has no statewide sales tax, so the state portion on $100 is $0.00. City and county tax is extra, so the amount at the register can be higher.
Does the Montana calculator include city and county tax?
No. The rate is the statewide rate only. The amount at the register can be higher where a city or county adds its own tax.
Is this the rate charged at the register?
Not always. This is an estimate of the statewide rate. Local tax and product exemptions can change the amount you pay.
Related calculators
Rate checked January 1, 2026 against Tax Foundation.
Montana has no statewide sales tax. A few resort areas charge a local tax.