Buying a car in Ohio adds sales tax at the BMV when you title it. The rate is the 5.75 percent state tax plus your county and transit permissive rate, applied to the price after any trade-in. This calculator works out the exact tax and total.
How it works
The taxable amount and tax are computed as:
taxable = purchase price + doc fee - trade-in allowance
total rate = 5.75% state + county/transit permissive rate
sales tax = taxable x total rate
Ohio uses the buyer’s county of residence for the rate, and the trade-in deduction applies only to purchases from a licensed dealer, not private-party sales.
Example
A 25,000 dollar car with a 5,000 dollar trade-in in a county with a 1.5 percent permissive rate is taxed on 20,000 dollars at a combined 7.25 percent. That is 1,450 dollars of sales tax, on top of the negotiated price and registration fees.
Notes
Combined rates and permissive components vary by county and change over time, and some leases and out-of-state moves follow special rules. Confirm your county’s current rate and titling requirements at tax.ohio.gov and bmv.ohio.gov before finalizing a purchase.