TEXAS VEHICLE TAX
Texas car sales tax: 6.25% after an eligible trade-in.
Texas motor vehicle sales tax is 6.25% of the sales price minus an eligible motor-vehicle trade-in allowance. Private-party used-car purchases can use a standard presumptive value.
Texas tax formula
(Vehicle selling price − eligible trade-in allowance) × 6.25%
$40,000 Texas example
With no trade, estimated tax is $2,500. With a $10,000 eligible trade-in in the same transaction, the estimated taxable value is $30,000 and tax is $1,875—a $625 difference.
Private-party purchases are different
Texas may calculate tax on the purchase price or the state's standard presumptive value for a used vehicle bought from someone other than a licensed dealer. Check the value before treating a low written price as the taxable amount.
What to verify
- The trade is a qualifying motor vehicle transferred in the same transaction.
- The tax line equals 6.25% of the documented taxable value.
- Title, registration, inspection, and dealer charges are itemized separately.
Official Texas sources
Review the Texas Comptroller sales and use tax summary and its motor vehicle tax FAQ. Private-party buyers can check the Texas DMV presumptive value calculator.
Texas tax on a $35,000 dealer purchase
Using the standard 6.25% motor-vehicle rate, a hypothetical $35,000 taxable selling price produces $2,187.50 tax without a trade. An eligible $8,000 trade allowance reduces this example's base to $27,000 and tax to $1,687.50: a $500 difference. Separate fees and exceptional transactions are excluded.
Use the Texas calculator preset with $35,000 price and $8,000 eligible trade to reproduce this calculation. Confirm which charges belong in the taxable selling price before comparing the estimate with a real quote.
Dealer purchase versus private-party purchase
Do not automatically apply a dealer-price example to a private-party used vehicle. Texas may calculate private-party tax using standard presumptive value. The Texas Comptroller's motor-vehicle tax guidance explains the applicable valuation rules. A calculator using only the amount you paid cannot discover a higher required valuation.
Examples checked September 11, 2026 against the official sources linked on this page.
Educational estimate reviewed September 3, 2026. Exemptions, gifts, interstate purchases, private sales, and unusual transactions can change the result.