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Montana Auto Sales Tax Calculator

Updated

Estimate Montana sales tax, dealer fees, and the out-the-door price on your next car. Pre-filled with the Montana state base rate (0.00%) and the standard full-price tax basis for the state.

Montana has no statewide auto sales tax. No statewide sales tax.

Estimate only. Estimate only. Not a loan offer, lender quote, dealer quote, lease agreement, retail installment sales contract, DMV estimate, or financial advice. Actual rates, payments, taxes, fees, incentives, residual values, insurance, fuel, and maintenance costs may vary.

Sales tax

$0.00

Total fees

$774.00

Out-the-door (estimate)

$30,774.00

Assumptions usedv2026-05-04
  • Taxable basisprice

How this is calculated

The calculator above is pre-filled with Montana's statewide base rate of 0.00% and the full-price tax basis. Adjust the rate to include any local (county/city) surtaxes that apply at your address. No statewide sales tax.

For a generic, non-state-specific version, use the canonical auto sales tax and fees calculator. For background on how tax bases vary by state, read auto sales tax and fees explained.

Frequently asked questions

What is the auto sales tax rate in Montana?
Montana does not levy a statewide sales tax on vehicles. No statewide sales tax.
Does Montana allow a trade-in tax credit?
No. Montana taxes the full vehicle price; trade-in value is not deducted before tax is computed. For example, on a $40,000 car with a $10,000 trade-in, sales tax is still computed on $40,000.
How is out-the-door price calculated in Montana?
Out-the-door price = vehicle price + sales tax + documentation, title, registration, and dealer fees − rebates. Use the calculator above to estimate yours.
Is this an official Montana DMV tax estimate?
No. This is an educational estimate. Actual taxes and fees vary by county, city, dealer, vehicle type, and timing. Confirm exact amounts with your dealer and the Montana DMV before signing.

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