What you pay in tax when you buy a vehicle in Oklahoma, from the statute and the revenue department.
Verified September 21, 2026 · statute and revenue department cross-checked
The statute and the actual bill do not match. People often describe Oklahoma as 4.5 percent excise. The excise is 3.25 percent; the 4.5 percent figure is excise plus the separate 1.25 percent sales tax. Also, from July 1, 2026 the taxable value is the actual sale price rather than a NADA band.
Oklahoma gives no trade-in credit, so a trade-in does not reduce the taxable amount.
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Buying the car is only half the cost. You still owe an annual registration fee.
Oklahoma charges two taxes at once and no city or county adds more. The excise portion is calculated before any trade-in credit, so trading in does not reduce that part. A used vehicle pays $20 on the first $1,500 of value plus 3.25 percent on the rest.
Oklahoma Enrolled House Bill 1183 (2025) “The value of any vehicle, for purposes of the excise tax levied by Section 2103 of this title, shall be the actual sales price of such a vehicle before any discounts or credits are given for a trade-in. ... This act shall become effective July 1, 2026.”
Service Oklahoma, Legislative Updates “House Bill 1183 – Excise Tax Based on Sale Price. Effective Date: July 1, 2026 ... the excise tax will now be based directly on the vehicle’s actual sale price”
Last verified: September 21, 2026.
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Estimates only. Your dealer or the state issues the final bill, and exemptions can change what you owe. This page does not collect or store anything you enter.