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Montana Auto Sales Tax Calculator

Updated

Montana levies no statewide auto sales tax, so the calculator above shows fees and out-the-door price without a state sales tax line. Local jurisdictions (borough, city, or county) may still charge a sales tax on vehicle purchases — verify the rate where the vehicle will be registered. No statewide sales tax.

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 usedv2026-06-18
  • 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. To compare rates across every state, see the auto sales tax calculator by state. For background on how tax bases vary by state, read auto sales tax and fees explained.

Montana sales tax is separate from registration and title fees. For Montana's registration fee structure (typically dominated by either a flat fee, weight tier, or value-based fee), use the Montana auto registration & title fees calculator.

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.

Auto sales tax in other states

Compare Montana's rate (no statewide sales tax) with the rest of the country, or see the full state index.

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