Car sales tax is the one-time levy your state, and often your city or county, charges when you title a vehicle you just bought. It is figured on the purchase price minus any trade-in the state lets you deduct, at the rate where you register the vehicle, not where you buy it. On a $30,000 purchase that runs from $0 in Montana or New Hampshire to about $2,700 in Illinois at a typical local rate.
Enter the price, trade value, new or used, seller type and registration state. Leave the local box blank for the typical city and county add-on, or type your own. Results split state and local amounts, show the trade saving, name any cap, and add documentation and title fees for an out the door total.
Car Sales Tax Calculator by State
Enter the price, any trade-in, new or used, dealer or private seller and the state where you will register the vehicle. You get the statewide and local amounts, what the trade-in saves, any cap or local limit that applies, and the out the door total with the documentation and title fees.
Your Estimate
Estimates only, built from 2026 planning figures: statewide vehicle rates, trade-in rules and caps, typical local add-ons from the Tax Foundation midyear 2026 averages, state limits on the local base, and typical dealer documentation and title fees. Your exact city, county or district rate, rebates, exemptions and fees set by your county office will move the real number. Nothing here is tax advice.
How Car Sales Tax Is Calculated, Step by Step
- Start with the negotiated purchase price, before fees.
- Subtract the trade allowance where allowed. California, Virginia, Hawaii and DC charge on the full price anyway; Kentucky gives the credit only on used purchases, Ohio only on new ones.
- Multiply by the state sales tax rate. South Carolina caps its 5% fee at $500.
- Add the city and county share, stopping at any local cap.
In Texas, a $30,000 new car with an $8,000 trade leaves $22,000 taxable. At the 6.25% Texas motor vehicle sales tax that is $1,375, and Texas adds no local levy on vehicles. Skip the trade and the bill is $1,875, so the old car earned $500 on top of its appraisal. Add the $250 typical documentation fee and $33 title fee: $31,658 out the door, $23,658 after the trade-in. A lowball trade offer paired with a “discount” on the new one costs you twice: on the appraisal and in lost credit. Still paying off the old car? The trade and payoff walkthrough runs both numbers.
Where Combined Rates Overstate the Bill: Tennessee, Arkansas, Florida
Most 50-state tables multiply the price by the combined rate, which overshoots by hundreds of dollars in three states where the local levy stops partway up the price.
- Tennessee: 7% statewide on the full price, the local rate on the first $1,600 only, plus a 2.75% single article charge on the slice from $1,600 to $3,200. On $30,000 that is $2,186, not the $2,883 a 9.61% combined rate implies.
- Arkansas: 6.5% statewide, with city and county levies collected on the first $2,500 of a single vehicle. On $30,000 you owe about $2,025, not $2,844. Used vehicles under $4,000 are exempt, and $4,000 to $9,999 pays 3.5%.
- Florida: 6% statewide, and the county surtax applies only to the first $5,000, so at a typical 0.98% it adds just $49.
The Tax Foundation midyear 2026 rates list a local layer in Georgia, North Carolina, South Carolina and Minnesota, but those states tax a vehicle purchase with their own levy instead.
Eight States Side by Side on a $30,000 Purchase
Figures assume a dealership purchase, no trade and the typical local add-on; your address can move the local column a point or more.
| State | Statewide rate | Typical local add-on | Trade credit | Rule that changes the math | Owed on $30,000 |
|---|---|---|---|---|---|
| Arkansas | 6.5% | 2.98% on first $2,500 | Yes | Local base stops at $2,500 | $2,025 |
| California | 7.25% | 1.78% | No | Full price counts even with a trade | $2,709 |
| Florida | 6% | 0.98% on first $5,000 | Yes | County surtax stops at $5,000 | $1,849 |
| Illinois | 6.25% | 2.73% | Yes | Private deals use a flat schedule | $2,694 |
| Kansas | 6.5% | 2.21% | Yes | None | $2,613 |
| Tennessee | 7% | 2.61% on first $1,600 | Yes | Extra 2.75% on $1,600 to $3,200 | $2,186 |
| Texas | 6.25% | None on vehicles | Yes | Private deals use presumptive value | $1,875 |
| Utah | 4.85% | 2.57% | Yes | None | $2,226 |
Dealer Purchase vs Private Party Sale
A dealer collects the money at signing. On a private party sale you pay when you title the vehicle; Texas allows 30 calendar days, then adds a 5% penalty, rising to 10% after another 30. The rules also shift with the seller:
- Arizona and Nevada charge nothing on a private-party deal, though the same used car from a dealer pays the full rate.
- Texas can charge on its standard presumptive value, a book figure for the model, instead of a suspiciously low bill of sale.
- Illinois swaps the percentage for a flat amount by price and model year.
- California calls it use tax but charges the same rate for your registration address.
Expect a documentation fee on top, capped in some states and negotiable in most; the guide to car dealer fees lists which to push back on.
Buying in Another State, Title and Registration Requirements
Cross a border to buy and you still owe your home rate, because most states run one sales and use tax rate for vehicles registered there and credit what you paid elsewhere; you settle any difference at registration. New residents bringing a car they already own usually pay a flat fee instead (Texas charges $90). The vehicle registration fee calculator covers the plates due at the same visit.
When You Pay, and Whether You Can Finance or Deduct It
Timing follows the state, not the seller. Most dealers collect the levy at signing and remit it with the title paperwork, but a few states have the buyer pay it in person at the title office, and that changes your deadline and your cash needs on the day you buy.
Missouri: 4.225% Plus Your Home Rate, Due Within 30 Days
Missouri charges 4.225% statewide on the price after any trade allowance or rebate, then adds the local rate for the address where you live, not where the dealer sits. Buyers settle it at a Missouri Department of Revenue license office when they title. Wait past 30 days and a $25 penalty starts on day 31, growing $25 for each further 30 days up to $200.
Rolling the Levy Into Your Auto Loan
Most lenders will finance it along with title and dealer fees. That keeps cash in your pocket but adds the levy to the amount financed, so you pay interest on it for the full term, and a long loan on a fast-depreciating car can leave you owing more than it is worth. The car loan calculator with taxes and fees shows the payment with the tax rolled in versus paid up front.
Is Car Sales Tax Deductible on Your Federal Return?
Only if you itemize on Schedule A and choose to deduct state and local sales taxes instead of state income taxes. The IRS lets you add the vehicle levy to its optional table amount, but only at your state’s general sales tax rate; any part charged above that rate does not count. The total also counts toward the SALT cap on state and local deductions, so buyers who take the standard deduction get nothing from it. The IRS sales tax deduction calculator runs the comparison.
To estimate your car sales tax, run the numbers above with your negotiated price and real trade figure, then check the local rate on the buyer’s order before you sign. Financing it? The car loan calculator shows the interest on a financed levy, and the cost of car ownership calculator puts it beside five years of running costs.
Frequently Asked Questions
Does a trade-in lower what you owe?
Yes, in most states. The trade value comes off the purchase price first, so a $10,000 trade at 6.25% saves $625. California, Virginia, Hawaii and DC give no credit, Kentucky allows it only on used vehicles and Ohio only on new ones, and Michigan caps it at $12,000 in 2026.
Do you pay sales tax when buying a car from a private seller?
Usually, yes, at titling rather than to the seller, at the standard rate for your address. Arizona and Nevada charge nothing on private deals, and Illinois uses a flat schedule.
Which states have no vehicle sales tax?
Montana, New Hampshire and Alaska charge no statewide levy, though some Alaska boroughs add their own. Oregon charges 0.5% on new vehicles only, and Delaware collects a 4.25% document fee at titling.
What is the difference between sales tax and use tax on a car?
Sales tax applies to a purchase from an in-state dealer. Use tax covers the vehicle when nothing was collected at purchase, as on a private or out-of-state deal. The rate is normally identical.
Can you avoid it by registering in Montana?
Not legally if you live elsewhere. Your home state taxes the vehicle where it is kept, and a Montana LLC set up to dodge that can end in the levy plus penalties. A genuine tax exemption covers cases such as family transfers or gifts.
Estimates only. Rates are 2026 planning figures and local add-ons are typical averages; check your county tax office or state tax guide before you pay tax at titling. Last reviewed: October 2026.