Sales tax in Carter County, Montana
The sales tax rate in Carter County, Montana is 0%. That is a 0% state rate, with no county rate on top: Carter County levies none, and it is the same at every address in the county.
What is the sales tax rate in Carter County?
| Montana state rate | 0% |
|---|---|
| Combined rate | 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 Carter County?
The rate is the same across Carter County, but if you are collecting tax it is worth confirming against the source. Use Montana's own lookup. A vendor's calculator is not the state speaking.
Who has to collect sales tax in Carter County?
A seller with a physical presence in Montana collects at the rate for the address where the sale takes place. A remote seller collects once it passes Montana's economic nexus threshold, which is a separate question from the rate and is covered on our sales tax nexus checker. Marketplace facilitators generally collect on behalf of their sellers.
How does Carter County compare?
See Montana sales tax for the statewide picture, including the average local rate and what is exempt. Property tax is a separate tax with separate rules: property tax in Carter County.
Sources
- Carter County rates: Montana Department of Revenue / Tax Foundation, State and Local Sales Tax Rates (Jan. 2026)
- Collected and verified September 10, 2026. Confidence: S on the rate components (P read on a primary agency page, S strong but indirect, U unverified).