Oklahoma used car dealer paperwork and sales tax guide
How Oklahoma sales tax works on a used-car deal, how trade-ins and dealer fees are treated, and the title forms and notices a Oklahoma dealer prints.
Last checked November 14, 2026
This is a plain-language summary of how a used-car deal works out in Oklahoma: the sales tax, what happens to a trade-in, how dealer fees are treated, and the paperwork a dealer prints. DMS Apex uses these same rules to work out each Oklahoma deal.
Oklahoma tax and fees at a glance
| Item | Oklahoma |
|---|---|
| State tax | 1.25% state rate |
| Who pays it | Buyer, at titling or registration |
| Trade-in | Reduces the tax |
| Documentary fee | Not part of the taxable amount |
| Service contract | Not taxed |
| Starting title fee in DMS Apex | $11 |
How Oklahoma sales tax is worked out
Oklahoma: Service Oklahoma collects the taxes at titling, so the amounts shown are an estimate and are not added to what is due now. They are the 1.25% sales tax on the price less the trade-in, plus the used-vehicle excise tax ($20 on the first $1,500 and 3.25% of the rest). Oklahoma changed how the excise tax treats a trade-in on 7/1/2026 and the agency's older rules say otherwise: confirm the base with Service Oklahoma. The documentary fee is left out and must be charged the same on every vehicle. Title fee starts at $11. The 3.25% excise tax is figured on the price before the trade-in (HB 1183, effective 7/1/2026); only the 1.25% sales tax takes the trade-in off.
Oklahoma paperwork a dealer prints
DMS Apex prints these documents for a Oklahoma deal, all in black and white:
- Buyer's Order
- Buyers Guide
Step-by-step form guides
- 701-6 Application for Oklahoma Certificate of Title: how to fill it out
This is general information, not legal or tax advice. Oklahoma rules change: confirm current requirements with Service Oklahoma or the Oklahoma Tax Commission.
Common questions
How much is sales tax on a used car in Oklahoma?
1.25% state rate. A trade-in reduces the taxable amount. See the table above and confirm the current rate with Service Oklahoma or the Oklahoma Tax Commission.
Does a trade-in lower the tax in Oklahoma?
Yes. In Oklahoma the trade-in allowance reduces the amount the tax is figured on.
Is the dealer fee taxed in Oklahoma?
No. In DMS Apex the documentary fee is not part of the taxable amount for Oklahoma.
Does DMS Apex print Oklahoma dealer forms?
Yes. It prints Buyer's Order, Buyers Guide.
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