What Is Standard Presumptive Value for Texas Vehicles?

Standard Presumptive Value in Texas, usually shortened to SPV, is a minimum taxable value the state assigns to a used vehicle sold between private parties. When you register the vehicle, the county tax office charges 6.25 percent motor vehicle sales tax on either what you actually paid or 80 percent of the SPV, whichever number is higher.¹ The rule exists to stop buyers and sellers from writing down a fake low price on the bill of sale to shrink the tax bill.² The number itself comes from Black Book, a vehicle valuation service that uses wholesale data and Texas-specific sales information.³

How the Tax Is Calculated

The clerk at the county tax assessor-collector’s office runs two numbers side by side: your actual purchase price, and 80 percent of the SPV for your specific vehicle. You pay 6.25 percent on the larger of the two.¹ The 80 percent factor is built in to reflect the discount private-party sales normally carry against retail pricing.

A quick example shows why this matters. You buy a used truck for $4,000. Black Book values it at $8,000, and 80 percent of that is $6,400. Because $6,400 is higher than your $4,000 purchase price, the tax is calculated on $6,400. That’s $400 in tax, not the $250 you’d expect from your actual price. The gap between those two numbers is the thing that catches people at the counter.

Looking Up SPV Before You Buy

Texas publishes a free online SPV calculator through the Department of Motor Vehicles. You need the full 17-character Vehicle Identification Number and the current odometer reading.³ Multiply the result by 0.80 and compare it against what the seller is asking. If the asking price is well below that figure, you now know what your tax bill will actually look like.

Some vehicles don’t return a value. Very old cars, specialty vehicles, certain trailers, and some recreational vehicles may not appear in the database. When there is no SPV, the county requires an appraisal from a licensed dealer, a licensed insurance adjuster, or someone with specialized knowledge of that vehicle type at the county’s discretion.⁴

When SPV Does Not Apply

SPV only touches used vehicles sold between private parties.⁴ Several common transactions sit outside it entirely.

Buying from a licensed dealer? Your tax is calculated on the purchase price shown on the dealer’s receipt. The same goes for any new vehicle that has never been titled.³

Gifts between qualifying family members trigger a flat $10 gift tax instead of the 6.25 percent sales tax. Qualifying relationships include spouses, parents, stepparents, children, stepchildren, siblings, grandparents, grandchildren, in-laws, guardians, and 501(c)(3) nonprofits. Both parties sign a notarized Affidavit of Motor Vehicle Gift Transfer (Form 14-317) and file it with the county tax office.⁵ A transfer that doesn’t fit one of those relationships is treated as a sale, and SPV kicks back in.

Even trades, where two people swap vehicles straight across with no money changing hands, cost each party a $5 even-exchange tax and are excluded from SPV.⁶⁷ The moment any cash moves or anyone assumes a lien, the trade no longer qualifies and the normal rules return.

Lowering the Taxable Value With a Certified Appraisal

If you paid less than 80 percent of SPV because the vehicle has mechanical problems, body damage, a salvage or rebuilt title, or other condition issues, you can bring the taxable value down with a certified appraisal.¹ The appraisal can reduce the taxable amount to whatever the appraiser determines the vehicle is worth, but never below what you actually paid. Pay $3,000 for a car an appraiser values at $2,500, and you still owe tax on $3,000. Salvage and rebuilt-title vehicles are a common reason to go this route, because the online SPV figure may not reflect the title brand.⁸

The appraisal has to meet strict requirements. It must be done by a licensed Texas motor vehicle dealer (only for vehicle categories they’re licensed to sell) or a licensed insurance adjuster, who can appraise any used vehicle. The appraiser has to view the vehicle in person and complete Texas Comptroller Form 14-128.⁹¹

You have 30 calendar days from the purchase date to obtain the appraisal and present it to the county. Active-duty military get 60 calendar days. For out-of-state purchases, the clock starts the day the vehicle enters Texas.⁴ Miss the window and the county falls back on the SPV calculation. There is no extension and no appeal for a late appraisal.

Appraisal fees typically run from roughly $85 to several hundred dollars depending on the vehicle and appraiser. Compare the fee against the tax savings before paying for one.

Out-of-State Purchases

Buy a vehicle in another state and bring it to Texas, and SPV still applies when you register. The 30-day appraisal window starts the day the vehicle enters Texas rather than the day you bought it.⁴ Texas credits sales tax you already paid elsewhere against the 6.25 percent owed here, so if the other state charged 4 percent, you owe Texas the 2.25 percent difference.

Titling and Paying the Tax

You have 30 calendar days after the sale to transfer the title and pay the tax at your county tax assessor-collector’s office. Active-duty military members get 60 days. Bring the signed title, a completed Application for Texas Title and/or Registration (Form 130-U), proof of insurance, and Form 14-128 if you are using an appraisal.

The clerk calculates 6.25 percent on whichever taxable value governs: the sale price, 80 percent of SPV, or the appraised amount.² Miss the 30-day deadline and an automatic $25 penalty applies, with another $25 added for each additional month the title remains untransferred. Neither the county nor TxDMV can waive or reduce those penalties.¹⁰

1
Texas Administrative Code. 34 Texas Administrative Code 3.79 – Standard Presumptive Value
2
Texas Comptroller of Public Accounts. Motor Vehicle Sales and Use Tax
3
Texas Department of Motor Vehicles. Standard Presumptive Values
4
Texas Comptroller of Public Accounts. Motor Vehicle Tax Guide – Standard Presumptive Value
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Texas Comptroller of Public Accounts. Motor Vehicle Tax Guide – Gift Tax
6
State of Texas. Texas Tax Code 152.024 – Tax on an Even Exchange of Motor Vehicles
7
Texas Comptroller of Public Accounts. Motor Vehicle Tax Guide – Even Exchange Tax
8
Texas Comptroller of Public Accounts. Motor Vehicle Tax Guide – Salvage and Non-Repairable Vehicles
9
Texas Comptroller of Public Accounts. Motor Vehicle Tax – Appraising Used Motor Vehicles in Private-Party Sales
10
Texas Department of Motor Vehicles. Title Penalties Press Release