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Free Montana Car Sales Tax Calculator

Work out the Montana car sales tax on a new or used car. Montana has no sales tax on cars. Some counties charge a voter-approved local option vehicle tax of up to 0.7% of value each year.

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No state tax. Add your local rate if one applies.
More options: rebate, dealer fees, state rules
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Doc fees are taxable in many states. Leave at 0 if unsure.
Estimated tax
$0.00
Taxable amount$30,000.00
Tax$0.00
Total due (before title and registration)$30,000.00
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Montana car sales tax rules

  • Tax type: No sales tax (registration fees and a county option tax instead)
  • Rate used in the calculator: none
  • Local taxes: Some counties charge a voter-approved local option vehicle tax of up to 0.7% of value each year.
  • Trade-in credit: Not applicable; there is no sales tax.
  • Manufacturer rebates: Not confirmed by the state source; the calculator taxes the price before the rebate, the more cautious choice.
  • Also note: Montana charges annual registration fees based on the car’s age instead of a sales tax.
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Other costs when you buy a car

On top of the tax, expect title, registration and plate fees, and a dealer documentation fee. Check whether the car fits your budget with the car affordability calculator, or compare with a lease.

Frequently asked questions

How much is sales tax on a car in Montana?

Montana has no sales tax on cars. Some counties charge a voter-approved local option vehicle tax of up to 0.7% of value each year.

How much tax will I pay on a $30,000 car in Montana?

Montana charges no sales tax on the purchase itself; montana charges annual registration fees based on the car’s age instead of a sales tax.

Does a trade-in reduce car sales tax in Montana?

Not applicable; there is no sales tax.

Do local taxes apply to cars in Montana?

Some counties charge a voter-approved local option vehicle tax of up to 0.7% of value each year.

Sources

Rules last reviewed 2026-11-11. Estimates only; the dealer or your state motor vehicle agency calculates the final amount.

Other states

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