How to use the Car Sales Tax Calculator

Estimate a vehicle’s sales tax and net out-the-door cost with an editable trade-in and tax rate.

Calculation formula

Estimated sales tax = max(vehicle price − eligible trade-in deduction,0) × entered tax rate; out-the-door cost = price + estimated tax + fees − trade-in credit.

Recommended steps

1. Enter values using the units shown beside each field.
2. Review whether the example assumptions match your situation.
3. Run the calculator and compare the key metrics.
4. Use the source data or official rates when precision matters.

Known limitations

Jurisdiction rules vary; trade-in credits and which fees are taxable may not apply in your state. Verify local DMV or tax authority rules.