Yellowstone County sales tax rate, Montana
Quick answer
Combined sales tax in Yellowstone County runs 0% across the cities we cover, on top of Montana's 0% state rate. The county share is a separate line from any city or special-district increment, which is why two addresses in the same county can pay different totals.
Cities in Yellowstone County
County share shown separately from the city and district layers.
| City | State | County | City + districts | Combined |
|---|---|---|---|---|
| Billings | 0% | 0% | 0% | 0% |
Source: Montana Department of Revenue · rates as published for 2026