Sales tax in Custer County, Montana
The sales tax rate in Custer County, Montana is 0%. That is a 0% state rate, with no county rate on top: Custer County levies none, and it is the same at every address in the county. That rate was read from Montana's own published schedule and checked on August 30, 2026.
What is the sales tax rate in Custer County?
| Montana state rate | 0% |
|---|---|
| Combined rate | 0% |
Sales tax in counties next to Custer County
Custer County borders 6 counties.
| County | Combined sales tax |
|---|---|
| Carter County, MT | 0% |
| Fallon County, MT | 0% |
| Garfield County, MT | 0% |
| Powder River County, MT | 0% |
| Prairie County, MT | 0% |
| Rosebud County, MT | 0% |
| Custer County, MT (this county) | 0% |
Why the rate here is not the whole story
No general state or local sales tax; state law does allow a handful of designated resort communities (e.g. Whitefish, Big Sky, Red Lodge) to levy a local-option resort tax up to roughly 3% on lodging, restaurants, and luxury goods.
How do I find the exact rate for an address in Custer County?
Use Montana's own address lookup.
Who has to collect sales tax in Custer County?
Any seller with a physical presence in Montana collects at the rate for the address of the sale; a remote seller does once it passes Montana's economic nexus threshold. Montana sales tax covers the statewide rules and what is exempt.
Work out your own numbers
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Sales tax calculator
Tax on a specific purchase at this county's rate, and the total you will actually pay.
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Do you have to collect?
Whether your sales into Montana cross its economic nexus threshold. A different question from the rate.
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Property tax in Custer County
The other local tax: effective rate and median bill for this county.
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Sales tax by county
Every US county, and how Montana compares with the rest of the country.
Sources
- Custer County rates: Montana Department of Revenue / Tax Foundation, State and Local Sales Tax Rates (Jan. 2026)
- Collected and verified August 30, 2026. Confidence: S on the rate components (P read on a primary agency page, S strong but indirect, U unverified).