What you'll owe in vehicle sales tax, by state and county
Quick answer: sales tax on a car is (purchase price − trade-in credit) × your combined state + county rate. Texas runs 6.25% + up to 2% local, so a $35,000 car with no trade-in owes about $2,870 at the 8.20% average. Five states charge nothing, Georgia swaps in a 7% title tax, North Carolina 3%, and South Carolina caps the tax at $500. Pick your state below for the exact math.
| State | State rate | Avg local | Typical combined | Vehicle notes |
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State and average local rates as of January 1, 2026 (Tax Foundation). Vehicle-specific rules from each state's DMV or revenue department. Special systems: GA charges 7% TAVT instead of sales tax; NC charges a 3% highway use tax; NM and SD charge 4% motor vehicle excise tax; SC caps sales tax at $500; VA's 4.15% motor vehicle tax has a $75 minimum; WA adds 0.5% motor vehicle tax plus 8% on the amount over $100,000. This is an estimate, not tax advice — confirm with your DMV or county tax office.
Vehicle sales tax follows one equation almost everywhere: taxable base times combined rate. The interesting parts are what counts as the base and what sneaks into the rate, because a handful of states run entirely different systems for cars.
Tax = (purchase price − trade-in credit) × (state rate + local rate). The trade-in credit is the big swing: most states deduct your old car's value before applying tax, while California taxes the full price. Local rates vary by county and city; this tool pre-fills each state's average local rate, and you can overwrite it with your county's exact number from your state's revenue site.
Georgia replaces sales tax with a one-time 7% Title Ad Valorem Tax on fair market value. North Carolina charges a 3% highway use tax instead. New Mexico and South Dakota substitute 4% motor vehicle excise taxes. South Carolina caps its 5% tax at $500, so a $60,000 SUV pays the same $500 as a $15,000 sedan. Virginia's 4.15% motor vehicle sales tax carries a $75 minimum. Tennessee applies local tax only to the first $1,600 plus a 2.75% single-article tax on the $1,600–$3,200 band. Washington adds 0.5% motor vehicle tax on top of sales tax, and since January 1, 2026 an extra 8% on the amount over $100,000.
Enter the purchase price, pick your state, and add your trade-in. The local rate field fills with your state's average; swap in your county's actual rate for a tighter estimate. The breakdown shows state tax, local tax, and any special taxes separately so you can see what's driving the total.
A $35,000 car in Texas with a $5,000 trade-in: taxable base $30,000, combined rate 6.25% state + 1.95% average local = 8.20%, tax $2,460. Skip the trade-in and it's $35,000 × 8.20% = $2,870. Same car in California ignores the trade-in entirely: $35,000 × 8.99% average combined = $3,146.50 — California taxes the full price. And in South Carolina the whole question collapses: 5% of anything over $10,000 hits the $500 cap.
The luxury edge case: a $150,000 EV in Washington pays 10.01% (6.5 state + 3.01 avg local + 0.5 motor vehicle) = $15,015, plus 8% × $50,000 over the threshold = $4,000, for $19,015 in tax alone.
Multiply the taxable price by your combined state and local rate: (purchase price − trade-in credit) × (state rate + county rate). On a $35,000 car with no trade-in, that runs from $0 in Oregon and Montana to about $1,050 in North Carolina (3% highway use tax), $2,870 in Texas at the 8.20% average combined rate, and $3,538 in Louisiana at its 10.11% average combined rate.
In most states, no: the trade-in value is deducted before tax, so a $35,000 car with a $5,000 trade is taxed on $30,000. California is the big exception and taxes the full $35,000. New Mexico credits trade-ins against its 4% excise tax, and Illinois restored its full trade-in credit for standard passenger vehicles. Check your state's rule before structuring a deal, since on a large trade-in this swings thousands of dollars.
No. Sales tax on a vehicle is owed where you register it, not where you buy it. Register an Oregon-bought car in Texas and Texas collects its 6.25% plus local tax. Most states credit tax you already paid to another state, so you top up to your home rate rather than paying twice, but the paperwork burden is on you.
Georgia replaced sales tax on vehicles with a one-time Title Ad Valorem Tax, currently 7.0% of fair market value, set by the Georgia Department of Revenue and effective since July 2023. In exchange, there's no annual vehicle property tax on the same car. The rate applies whether you buy from a dealer or an individual.
Often yes. Several states tax private sales differently: Illinois collects use tax from a schedule based on age and price, and some states have exemptions or flat fees for casual sales between individuals. In most states you still pay the same rate when you title the car, but confirm with your DMV before assuming.
Title and registration fees, documentation fees (capped in some states, uncapped in others), and inspection or emissions fees all sit outside sales tax, though many states tax the doc fee itself as part of the vehicle price. Electric vehicles may also carry extra registration fees in some states to replace gas-tax revenue.