Texas Used Car Sales Tax: SPV, Appraisals, Gifts and Penalties

Texas charges 6.25% motor vehicle sales tax on a used car. Buy from a dealer and it's 6.25% of the price minus your trade-in, collected by the dealer. Buy from a private seller and it's 6.25% of whichever is higher, the price you paid or 80% of the car's standard presumptive value (SPV), paid at the county tax office within 30 calendar days. The exceptions are fixed amounts: $10 for a qualifying family gift, $5 for an even exchange, and $90 for a new resident bringing a car already registered in their name.

Sunday, October 18, 2026, I read the Texas Comptroller's motor vehicle sales and use tax page, its SPV page and its motor vehicle tax FAQ. Our Texas private-sale title transfer guide already walks through the 130-U and the trip to the tax office. This one is about the tax math, and the ways people end up paying more than they expected.

Dealer purchases: the trade-in helps

The Comptroller lists sales tax as 6.25% of the sales price minus any trade-in allowance. That's a real difference from states like California, which tax the full price no matter what you trade. The dealer collects the tax on vehicles with a gross weight of 11,000 pounds or less and sends it to the county tax assessor-collector, and the Comptroller notes the tax stays your debt until you've paid it to the dealer. Trade a $6,000 car into a $20,000 purchase and you're taxed on $14,000, which is $875.

Private sales: how SPV works

SPV is a value TxDMV sets from a regional guidebook published by a nationally recognized value service, based on the average price of private-party sales in your region. The Comptroller says the car's condition isn't used. The county figures your taxable value on the day you title and register, using the SPV shown that day. Say you paid $9,000 for a car with a $15,000 SPV. Eighty percent of SPV is $12,000, which beats your price, so the tax is $750 rather than $562.50. That rule covers sales between family members and neighbors too, unless the deal qualifies as a gift.

SPV doesn't apply to dealer sales, salvage vehicles, abandoned vehicles, storage and mechanic's lien sales, cars eligible for classic plates, even trades, eligible gifts, or sales by Texas government entities or the United States.

Paid less than SPV for a reason? Get an appraisal

If the car really is rough, the Comptroller lets you use a certified appraisal on Form 14-128, obtained within 30 calendar days of purchase or of bringing the car into Texas. Tax is then figured on the appraised value, but never on less than you paid. The appraisal has to come from a licensed dealer, who charges a set fee schedule, or a licensed insurance adjuster, whose fee isn't capped. The Comptroller itself warns that a dealer appraisal has to cut the value enough to beat the fee. If you already paid on SPV and get a favorable appraisal inside that 30-day window, you can claim the difference back on Form 14-202. In the example above, a $10,000 appraisal drops the tax to $625. That's a $125 saving, so do the math before paying for one.

Gifts, even trades and new residents

• $10 gift tax: only for cars received from a spouse, parent or stepparent, grandparent or grandchild, child or stepchild, or sibling (in-laws included), a guardian, a decedent's estate, or a qualifying 501(c)(3) nonprofit. Both sides sign Form 14-317, notarized or witnessed by a county tax office employee. Any other no-money transfer counts as a sale taxed on SPV.
• $5 even exchange: due at title transfer.
• $90 new resident tax: in place of use tax if the car was already registered in your name in another state or country, due within 30 calendar days of bringing it in.
• Texas residents buying out of state: 6.25% use tax, with credit for sales or use tax paid elsewhere. SPV also applies to private-party cars bought out of state and brought in.

Deadlines and penalties

Private-party buyers have 30 calendar days from purchase; active-duty military get 60. Pay 1 to 30 days late and the Comptroller adds a 5% penalty, and past 30 days late it's 10%. So a $750 tax bill turns into $825 if you let the title sit in a drawer for three months. Honestly, that's the cheapest mistake on this list to avoid.

What SPV can't see

SPV assumes an average car, and it treats a hail-beaten or flood-soaked car like any other unless it's a salvage vehicle. Before you agree on a price, check the history so you know if the right move is an appraisal or walking away. Our Texas salvage title rules and used car sales tax posts fill in the rest. Search NMVTIS and pull a report yourself. We're a licensed CARFAX and AutoCheck reseller, independent of CARFAX, AutoCheck and Experian. As of mid October 2026, single reports cost around $5.50 for guests and $4.50 for members, the bundle around $6.75, where retail is about $39.99 to $44.99. Please confirm the total at checkout before you pay.

Sources

• Texas Comptroller: Motor Vehicle Sales and Use Tax, Private-Party Purchases and SPV, Motor Vehicle Taxes FAQ, all read Oct. 18, 2026
• TxDMV: Buying or Selling a Vehicle; NMVTIS