Ohio Car Sales Tax: How It Works in 2026

Ohio's state, county, and transit tax components

The state portion is 5.75%. The local portion varies by the purchaser's tax district, and a transit district can change the combined rate within a county. The Ohio Department of Taxation's address-based Finder is the right way to identify a purchaser's exact district; the dealer's location or a county name alone may not be enough.

For example, the verified engine lists Franklin County at 8.00% and the Licking County COTA district at 8.25%. A buyer should select the district associated with the purchaser's taxing location, including transit details where relevant.

How trade-ins, discounts, and charges affect taxable value

For the calculator's supported new-dealer purchase, the taxable base starts with the vehicle price and taxable additions, subtracts the seller discount, then subtracts the qualifying dealer-accepted trade value. On the used-dealer path, Ohio's trade-in deduction does not apply. The same engine does not apply it to its ordinary private-party path.

Supported new-dealer taxable base = vehicle price + taxable additions + contract-taxable negative equity − seller discount − qualifying trade allowance. The calculator prevents the taxable base from dropping below zero.

A qualifying documentary service charge is displayed separately and excluded from the taxable base under the cited Ohio rule. That treatment is specific to a qualifying charge; it does not mean every dealer-controlled add-on is automatically non-taxable.

Trade value, loan payoff, and equity are different amounts

Trade value is the amount the dealer allows for the old vehicle. The loan payoff is what is still owed to the lender. Subtracting payoff from trade value gives net trade equity: positive equity if the allowance is higher, negative equity if the payoff is higher.

Payoff does not reduce the trade-in tax deduction. Ohio's negative-equity treatment can depend on how the contract presents the amount. The calculator asks whether negative equity is included in total vehicle price or paid to a third party after the vehicle-price calculation rather than assuming one treatment.

Worked example: new vehicle bought in Franklin County

The live Ohio engine returns a $19,500.00 taxable base and $1,560.00 estimated tax at 8%. The trade allowance is $10,000 and payoff is $12,000, so net equity is negative $2,000; the payoff does not shrink the $10,000 tax deduction. The $398 qualifying documentary charge is shown separately and not added to taxable value.

Rates and transaction details to confirm

Ohio local rates can change, and the dataset used for the example reflects the verified October 2026 rate schedule. Confirm the purchaser's exact address in The Finder before relying on an estimate. For registration and title costs, use the Ohio Tax, Title & License Calculator; for the annual and term-based registration amounts, see the Ohio vehicle registration fees guide.

Ohio car sales tax questions buyers ask

What is the Ohio state sales tax rate on a car?

The state portion is 5.75%. The combined rate is higher when county or transit-district tax applies.

Does a trade-in reduce Ohio sales tax?

The supported qualifying trade-in deduction applies to a new-vehicle dealer purchase. The calculator does not apply it to a used-vehicle dealer purchase or an ordinary private-party purchase.

Does my trade loan payoff reduce the tax deduction?

No. The deduction follows the qualifying trade allowance. Payoff changes net equity; any negative equity may affect the taxable price depending on how the contract presents it.

Does the dealership location determine my Ohio rate?

The calculator uses the purchaser's taxing location. Check the purchaser's address in the Ohio Department of Taxation Finder and select any applicable transit district.

Is a dealer documentary fee taxable in Ohio?

A charge that qualifies as an Ohio documentary service charge is excluded from the taxable base under the cited rule. Other dealer charges need their own tax treatment and are not automatically exempt.

How is a private-party car purchase taxed?

The supported private-party path uses the selected purchaser tax district and does not apply the new-dealer trade-in deduction. Special credits and other unsupported transaction adjustments are outside this estimate.