Montana Car Sales Tax Calculator
Montana does not charge a general state sales tax on a vehicle purchase — the state car sales/use tax rate is 0%. That makes Montana one of the cheapest states to buy a car tax-wise, though some local taxes or state-specific fees may still apply (see below). Use the calculator to model a trade-in or any edge cases.
Quick answer: Montana has no general state sales tax on vehicles — the rate is 0%. Some local taxes or state-specific fees may still apply (see below).
Estimate your Montana car sales tax
Enter the vehicle price. If Montana gives a trade-in tax credit, add your trade-in value to reduce the taxable amount.
State rate only. Many Montana counties and cities add a local sales tax on top, so your actual total may be higher. Trade-in credit rules vary — confirm eligibility with the official source below.
How Montana taxes a car purchase
| State vehicle sales/use tax rate | 0% |
| Taxable amount | Price − trade-in credit (where allowed) |
| Local / county tax | Varies by jurisdiction — added on top of the state rate |
Montana's title fee is $10.30 and there is NO state sales tax on vehicles (a county option tax may apply). Passenger registration is age-based, and owners of vehicles 11 or more years old may opt for permanent registration.
Sales tax on a used car in Montana
Buying a used car in Montana carries no state sales tax — the 0% rate applies whether you buy from a dealer or a private seller. Local taxes and separate title, registration, or documentation fees can still apply, so check those before you budget.
What this estimate excludes
- Local and district taxes. County, city, and transit taxes are added on top of the Montana state rate.
- Title, registration, and plate fees. These are separate from sales tax — use the Montana registration and title-transfer calculators for those.
- Dealer documentation fees. A dealer “doc fee” is charged on top and is often itself taxable.
- Exemptions. Gifts, inheritance, and certain family transfers may be exempt — confirm with Montana Motor Vehicle Division.
Official Montana source
Related Montana tools & guides
Frequently asked questions
How much is sales tax on a car in Montana?
Montana has no general state sales tax on vehicle purchases, so the state sales tax is $0. Some local taxes or state-specific fees can still apply — see the notes below and confirm with Montana Motor Vehicle Division.
Do I pay sales tax when buying a used car from a private seller in Montana?
In most states, sales or use tax on a private-party vehicle purchase is collected when you title and register the car, not at the point of sale. The rate is generally the same as a dealer sale. Confirm the private-sale rules with Montana Motor Vehicle Division.
Does Montana give a sales tax credit for a trade-in?
Most states tax only the difference between the vehicle price and your trade-in value, which lowers the tax you owe. A handful of states tax the full price with no trade-in credit. Verify Montana's treatment before you rely on the estimate above.
Are there local or county car sales taxes in Montana?
Often, yes. The rate shown here is the Montana state rate only; many counties, cities, and transit districts add a local sales tax on vehicle purchases, so your combined rate can be higher. Montana Motor Vehicle Division publishes the official combined rates.
Can you legally avoid sales tax on a used car in Montana?
The legitimate ways to lower or avoid vehicle sales/use tax in Montana are a qualifying trade-in credit (where the state allows one), a genuine gift or qualifying family transfer, or a specific exemption the state grants — not understating the sale price, which is illegal and easily caught by Montana Motor Vehicle Division against the vehicle's fair-market value. Confirm any exemption with Montana Motor Vehicle Division before relying on it.
Last reviewed: 2026-01-01 · Reviewed by the Car Paperwork editorial team · Based on official Montana Motor Vehicle Division sources · Independent resource · Not legal advice