Montana has no statewide sales tax and no general local sales tax, so the price on the tag is what you pay at the register. Use the calculator to compare what the same purchase would cost in a state that does tax it.
Rates are 2026 state rates plus population-weighted average local rates; your city or county may differ, and some items (like groceries) are taxed differently.
What no sales tax means at the register
Because Montana charges no general sales tax, a purchase costs its sticker price. The table shows the sales tax the same purchase would carry at the average combined rate in neighboring states, which is what you avoid by buying in Montana.
Sales tax on the same purchase in Montana and neighboring states (average rates, July 1, 2026)
Price
Montana
Idaho
North Dakota
South Dakota
Wyoming
$25.00
$0.00
$1.51
$1.77
$1.53
$1.35
$100.00
$0.00
$6.03
$7.09
$6.11
$5.39
$500.00
$0.00
$30.15
$35.45
$30.55
$26.95
$1,000.00
$0.00
$60.30
$70.90
$61.10
$53.90
$5,000.00
$0.00
$301.50
$354.50
$305.50
$269.50
How Montana compares with neighboring states
Montana is one of 5 states without a statewide sales tax. On a $1,000 purchase at average rates, buying in Montana instead of North Dakota saves about $70.90 in sales tax.
Sales tax rates in Montana and neighboring states (July 1, 2026)
Which goods are taxable differs by state: groceries, prescription drugs and clothing are often exempt or taxed at a reduced rate, while prepared food and general merchandise usually pay the full rate. Check unusual purchases against the state's current rules.
Montana has no statewide sales tax and no general local sales tax, so most purchases carry no sales tax at all.
How does Montana's sales tax compare with neighboring states?
Montana's combined average is 0%. Among neighboring states, the lowest is Wyoming at 5.39% and the highest is North Dakota at 7.09%.
How much sales tax do I save by buying in Montana?
On a $1,000 purchase, about $70.90 compared with North Dakota, where the average combined rate is 7.09%. Your home state may still expect use tax on items you bring back, so check its rules for large purchases.
Is there any local sales tax in Montana?
The Tax Foundation lists no general local sales taxes in Montana. Special taxes on items such as lodging, meals or fuel can still apply and are not covered by this calculator.