Verified April 2026
Montana Sales Tax Rates: 2026 County Guide
Complete sales tax breakdown for all 54 counties in Montana. Select a county to see city-level rates and How-To guides.
Rates verified: March 2026
Combined Rate
0.000%
State0.000%
Montana Base State Tax Rate
| Jurisdiction | Rate |
|---|---|
| Montana State Sales Tax | 0.000% |
| Total Combined Rate | 0.000% |
Economic Nexus Threshold
If your business exceeds
$0
in annual Montana sales or
0 transactions,
you must register and collect sales tax — even from out of state.
Avg Local Tax Rate
The average combined local tax rate across Montana is
0.00%.
The highest local rate is 0.00%.
All 54 Montana Counties
Beaverhead
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Big Horn
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Blaine
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Broadwater
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Carbon
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Carter
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Cascade
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Chouteau
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Custer
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Daniels
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Dawson
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Fallon
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Fergus
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Flathead
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Gallatin
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Garfield
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Glacier
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Golden Valley
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Granite
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Hill
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Jefferson
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Judith Basin
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Lake
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Lewis and Clark
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Liberty
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Lincoln
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Madison
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McCone
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Meagher
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Mineral
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Missoula
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Musselshell
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Park
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Petroleum
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Phillips
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Pondera
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Powder River
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Powell
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Prairie
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Ravalli
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Richland
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Roosevelt
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Rosebud
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Sanders
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Sheridan
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Silver Bow
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Stillwater
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Sweet Grass
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Teton
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Toole
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Treasure
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Valley
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Wibaux
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Yellowstone
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Sales Tax Calculator
Using 0.000% rate for Montana
$
Tax Amount
$0.00
Total with Tax
$100.00
Rate applied: 0.000% combined