Ohio Used Car Sales Tax: 5.75% Plus County, No Trade-In Credit

As of Oct 19, 2026, Ohio taxes a used car at the 5.75% state rate plus the permissive sales tax of the county you live in, and you pay it at a county clerk of courts title office when the title goes into your name. That's true for a car from a dealer and for one from your neighbor, because Ohio's casual-sale exemption specifically leaves out motor vehicles. The part that catches people: on a used car, your trade-in does not reduce the taxable price.

I worked through the Ohio Revised Code, the Department of Taxation's own vehicle compliance training material and the Franklin County Clerk of Courts title FAQ on Monday, October 19, 2026. The Department of Taxation's website blocked my requests, so where I couldn't link a page I've named it with the date I read it.

The rate, and which county counts

Ohio Revised Code 5739.02, in the version effective September 30, 2025, sets the state sales tax at "five and three-fourths per cent," and lets counties and transit authorities add their own tax on top. For a vehicle, the county that matters is yours as the buyer. The Franklin County Clerk of Courts says it plainly in its title FAQ: "Your tax rate depends on your county of residence." Franklin County's rate is 7.5%.

Quick math on an $8,000 car: $460 at the state rate alone, $600 if you live in Franklin County. Rates differ by county, so ask your own clerk's title office for the current number before you go. If you plan to pay by card, Franklin County adds a fee of 3% or $1.

Private sales are taxed, and Ohio checks the price

Section 5739.02(B)(8) exempts casual sales by people who aren't in the business, "except as to such sales of motor vehicles," titled watercraft, snowmobiles and all-purpose vehicles. So buying from a private seller is taxable, and the tax is collected when you title the car. The seller has to fill in the purchase price, your name and address, the date and the mileage on the title assignment and sign it in front of a notary. If the title was electronic, that's done on form BMV 3770 instead.

Don't lowball the number on the title. A Department of Taxation vehicle tax training deck from August 2019 explains that the department compares the title amount with the average purchase price of similar makes and models in Ohio. If yours is below average, the seller gets a questionnaire with 14 days to answer, then the buyer, and an unresolved case moves to a tax bill and then an assessment, with 60 days to pay or appeal. You can dispute it with a bill of sale or a notarized statement from the seller, and for a cheap car the deck mentions Kelley Blue Book values, pictures and invoices as evidence. Keep photos of whatever made the car cheap.

Trade-ins: new cars only

This is where Ohio differs from a lot of states. Ohio Administrative Code 5703-9-36, effective April 15, 2024, works through examples and says that for used vehicles, "sales tax is calculated on the total vehicle price as Ohio law does not allow a deduction from price for the value of a trade-in." New-vehicle examples in the same rule do subtract the trade.

So on a $15,000 used car with a $5,000 trade at a dealer, you're taxed on $15,000, which is $1,125 at Franklin County's 7.5%. Buy the same deal on a new car and you'd be taxed on $10,000. The rule also says that if negative equity from your old loan gets rolled into the vehicle price, it's taxed too. Our post on negative equity on a trade-in explains why that roll-in hurts twice.

Swaps, gifts and loans someone else takes over

Tax is due on the price, and the training deck quotes the definition: the total consideration, "including cash, credit, property, and services." Two friends swapping cars and calling it even both owe tax on the value of the car they received. A buyer who takes over the seller's loan has paid something too, and the deck lists that as a non-cash payment. A true gift where nothing changes hands is a different situation, but I couldn't open an official page that spells out the gift paperwork, so ask your title office what affidavit or wording it wants before you write $0 anywhere.

Checklist for the title office

• The title, assigned and notarized, with the real price, date and mileage.
• A bill of sale signed by both of you, plus value evidence if the price is low.
• Your photo ID, and payment for the tax plus title fees.
• Go within 30 days. After that Franklin County charges a $5 late fee.
• For a car titled out of state, an inspection from a dealer or deputy registrar, valid for 30 days.
• A history report you ran yourself and a brand check on NMVTIS; decode the VIN on NHTSA vPIC so it matches the title.

Our Ohio title transfer guide covers the paperwork in more detail, the general used car sales tax explainer compares states, and it's worth knowing what Ohio's lemon law won't do for a used car before you pay tax on a bad one. We're a licensed CARFAX and AutoCheck reseller, not affiliated with CARFAX, AutoCheck or Experian. As of mid October 2026, guest reports were about $5.50, member reports about $4.50 and the two-report bundle about $6.75, compared with roughly $39.99 to $44.99 retail. The checkout screen is the final word on price.

Sources

• Ohio Revised Code 5739.02 (codes.ohio.gov, version eff. Sept. 30, 2025) and Ohio Adm. Code 5703-9-36 (eff. April 15, 2024), read Oct. 19, 2026
• Ohio Department of Taxation: vehicle sales and exemptions training (Aug. 2019)
• Franklin County Clerk of Courts, Auto Title FAQs (clerk.franklincountyohio.gov), read Oct. 19, 2026
• NMVTIS; NHTSA vPIC