Michigan Car Sales Tax Explained

One statewide 6% rate; no local vehicle sales-tax add-on

The Michigan Department of Treasury identifies a 6% sales/use tax. Unlike some states, a buyer does not add a city or county vehicle-sales-tax percentage to that rate. This is a purchase tax, separate from title, registration, and plate costs.

Dealer purchases and private-party transfers use different tax bases

For an ordinary private sale, Michigan SOS explains that use tax is based on the greater of the purchase price or fair-market value. Keep a defensible valuation record when the reported price is below market; the tax office can review the facts.

Dealer invoices can include charges with different tax treatment. The supported Michigan dealer guidance treats documentary preparation as taxable; ask how any other charge is classified instead of assuming that every line is either taxable or exempt.

Trade allowance is not payoff or equity

The dealer's separately stated trade allowance is the amount considered for the tax deduction, subject to the 2026 $12,000 limit. Loan payoff does not increase or reduce that deduction. Equity is a different calculation: allowance minus payoff. The Michigan trade-in tax guide walks through the cap and payoff examples.

Worked examples from the Michigan tax engine

Common mistakes when estimating Michigan car tax

• Assuming a county sales-tax rate applies to a Michigan car purchase.
• Deducting an entire trade worth more than $12,000 in a 2026 dealer deal.
• Subtracting payoff from the tax allowance or using equity as the tax deduction.
• Using only the private-sale bill-of-sale amount when fair-market value is higher.
• Assuming every dealer charge has the same tax treatment.

Use the Michigan car sales tax calculator with the correct transaction type. For registration, see the Michigan registration fee guide. Verified October 2026.

Michigan car sales tax questions

Is Michigan sales tax 6% on cars?

Generally, yes. The supported state rate is 6%, without a local vehicle-sales-tax addition.

Do used cars have a different tax rate?

No. The 6% rate is the same; transaction type changes how the taxable amount is determined.

Does Michigan give a trade-in tax credit?

A qualifying dealer-accepted trade allowance can reduce taxable price, capped at $12,000 for a 2026 transaction. Ordinary private-party sales do not use this deduction.

Does a trade loan payoff lower sales tax?

No. Payoff affects equity only; the dealer's accepted allowance determines the supported deduction.

Do cities charge local car sales tax?

No local vehicle sales-tax add-on is included under the Treasury's statewide rate guidance.

Is a dealer documentation fee taxable?

The Michigan dealer manual identifies documentary preparation as taxable. Other line items should be assessed by their actual nature and transaction documents.