Texas Standard Presumptive Value: Tax Floor, Appraisals, and Gifts

The Texas Standard Presumptive Value (SPV) is a state-assigned baseline market value for used vehicles, and it sets the floor for sales tax when you buy from a private party. At the county tax office, the assessor-collector compares your purchase price against 80 percent of the SPV and charges 6.25 percent tax on whichever number is higher. Pay $8,000 for a truck with a $14,000 SPV, and you owe tax on $11,200, not on what you actually paid.¹

How SPV Sets Your Tax Floor

The 80 percent threshold is written into the law so that a low number on the bill of sale doesn’t automatically produce a low tax bill. Two buyers who pay very different amounts for the same year, make, and model can end up owing identical tax, because any purchase price below 80 percent of SPV gets replaced by that 80 percent figure for tax purposes. You only pay tax on your actual price when it meets or beats the floor.

The rate itself is 6.25 percent, applied to the taxable value the county tax office settles on the day you title and register the vehicle.¹ Knowing the SPV before you agree on a price tells you the real tax exposure, not the one implied by the sticker in the seller’s window.

Looking Up a Vehicle’s SPV Before You Buy

The Texas Department of Motor Vehicles maintains an online SPV calculator. Enter the 17-character VIN and the current odometer reading, and the tool returns the presumptive value drawn from nationally recognized vehicle value databases.²³

Treat the number as informational. SPV figures are updated periodically, and the official taxable value is whatever the county tax office pulls on the day you title the vehicle.² Check it during negotiation, then title promptly so a mid-cycle update doesn’t move the goalposts. If the calculator returns no value for a particular vehicle, tax is based on the purchase price instead.³

When SPV Doesn’t Apply

The SPV floor is a rule for private-party sales of used vehicles. Several common transactions are excluded, and tax in those cases is calculated on the actual price paid or on an independent appraisal.¹

Purchases from a licensed dealer, taxed on the dealer’s documented sale price.
Even trades between private parties with no money involved.
Qualifying gift transfers between eligible family members, which use a flat $10 gift tax instead.
Unrepaired salvage-title vehicles.
Vehicles eligible for classic, custom, or street rod specialty plates under Transportation Code Section 504.501, whether or not those plates are displayed.
Vehicles sold by government entities and those acquired through storage or mechanic’s liens.
Vehicles obtained through the state’s abandoned vehicle process.

For unusual or hard-to-value vehicles such as older customs, kit cars, or specialty trailers, the county tax office may require an independent appraisal.¹

The $10 Gift Transfer Option

A legitimate gift between eligible relatives sidesteps the SPV calculation entirely. Texas charges a flat $10 gift tax rather than 6.25 percent of any value, but the transfer must involve zero consideration. Any payment, any assumed loan, any trade of something with value, and the transaction is treated as a sale with SPV applied.⁴

Eligible donors include a spouse (separate property only, not community property), parents, stepparents, in-laws, grandparents, children, stepchildren, siblings, siblings-in-law, foster parents, foster children, guardians, and a decedent’s estate. Nonprofits qualifying under IRC Section 501(c)(3) and certain revocable trusts also qualify. Both parties sign Form 14-317, the Affidavit of Motor Vehicle Gift Transfer.⁴

Anyone outside that list, including a friend, a boyfriend or girlfriend, or an unmarried partner, does not qualify. Handing over the keys with no money changing hands still triggers the full SPV tax calculation in those cases, not the $10 flat rate.

Challenging the SPV With a Certified Appraisal

When mechanical problems, body damage, high mileage, or other issues make a vehicle worth well under its SPV, you can substitute a certified appraisal for the SPV figure. This is the only way to pay tax on an amount below 80 percent of SPV, and the rules are strict.

Who Can Appraise

Only two types of professionals qualify: a licensed Texas motor vehicle dealer, limited to the categories of vehicles they’re licensed to sell, or a licensed insurance adjuster. The appraiser must physically inspect the vehicle and complete Form 14-128, the Used Motor Vehicle Certified Appraisal Form, listing their license number, the mechanical or cosmetic factors reducing value, and their signature.⁵

Deadlines and Fees

The appraisal must be obtained and presented to the county tax office within 30 calendar days of the purchase date. For vehicles bought out of state, the 30-day clock starts when the vehicle enters Texas. Active-duty military personnel get 60 calendar days.¹ Miss the window and you pay tax on the SPV-based amount with no route back.

Dealers may charge between $100 and $300 for a standard vehicle appraisal, between $40 and $300 for a motorcycle, and between $100 and $500 for a travel trailer or motor home. Insurance adjusters set their own fees.⁶ The appraisal makes sense when the tax savings clear the fee.

What the Appraisal Cannot Do

An appraised value cannot fall below what you actually paid. Pay $5,000 for a vehicle an appraiser values at $3,500, and tax is still calculated on $5,000.⁶ The appraisal only helps when the vehicle’s condition justifies a value below 80 percent of SPV but above your purchase price.

Out-of-State Purchases and Tax Credits

Buying a used vehicle in another state doesn’t get you out of SPV. When you bring the vehicle into Texas, you owe the 6.25 percent motor vehicle use tax on the SPV-based value, same as a local purchase. Texas participates in the Multistate Tax Compact, however, and gives dollar-for-dollar credit for a similar sales or use tax already paid to another state.⁷

Pay 4 percent tax in the selling state and you owe Texas the remaining 2.25 percent. Pay 6.25 percent or more elsewhere and you owe nothing additional. Property taxes, import duties, value-added taxes, and fees paid to foreign countries do not count toward the credit.⁷ Bring the paperwork showing what you paid so the county tax office can verify.

The 30-Day Deadline and What Happens if You Miss It

Titling, registering, and paying tax all happen at the county tax assessor-collector’s office within 30 calendar days of the purchase date.⁸ Two separate penalties stack once that window closes.

The title transfer penalty is an automatic $25, plus another $25 for each additional month the title is late. Neither the county tax office nor TxDMV can waive or reduce it.⁹

The tax payment penalty is a percentage of the sales tax owed. One to 30 days late brings a 5 percent penalty. More than 30 days late brings an additional 5 percent, for a total of 10 percent. The minimum penalty is $1, and no waivers are available regardless of the reason for the delay.¹⁰

1
Texas Comptroller of Public Accounts. Standard Presumptive Value (SPV) – Motor Vehicle Tax Guide
2
Texas Comptroller of Public Accounts. Private-Party Purchases and Standard Presumptive Values
3
Texas Department of Motor Vehicles. Standard Presumptive Values
4
Texas Department of Motor Vehicles. Form 14-317, Affidavit of Motor Vehicle Gift Transfer
5
Texas Comptroller of Public Accounts. Form 14-128, Used Motor Vehicle Certified Appraisal Form
6
Cornell Law Institute. 34 Texas Administrative Code 3.79 – Standard Presumptive Value
7
Texas Comptroller of Public Accounts. Credit – Motor Vehicle Tax Guide
8
Texas Department of Motor Vehicles. Buying or Selling a Vehicle
9
Texas Department of Motor Vehicles. State Law Requires Private Sale Vehicle Buyers to Title in 30 Days or Face Financial Penalties
10
Texas Comptroller of Public Accounts. Penalty on Late Tax Payment – Motor Vehicle Tax Guide