In Montana, the gas tax varies depending on the type of fuel. For most drivers, the primary "gas tax" refers to gasoline.
Here are the current fuel tax rates in Montana:
Montana Fuel Tax Rates
| Fuel Type | Tax Rate | Montana Law Reference |
|---|---|---|
| Gasoline (includes Ethanol & Ethanol Blended Gasoline) | $.33 | 15-70-403 (1) (a) |
| Special Fuel (includes Biodiesel) | $.2975 | 15-70-403 (1) (b) |
| Aviation Fuel (includes Avgas & Jet Fuel) | $.05 | 15-70-403 (1) (c) |
As shown, the tax on gasoline is $0.33 per gallon. Other fuel types, such as special fuel (which includes biodiesel) and aviation fuel, have different tax rates established under Montana law.
