Wyoming used car dealer paperwork and sales tax guide
How Wyoming sales tax works on a used-car deal, how trade-ins and dealer fees are treated, and the title forms and notices a Wyoming dealer prints.
Last checked November 14, 2026
This is a plain-language summary of how a used-car deal works out in Wyoming: 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 Wyoming deal.
Wyoming tax and fees at a glance
| Item | Wyoming |
|---|---|
| State tax | 4% state rate plus local tax |
| Who pays it | Buyer, at titling or registration |
| Trade-in | Reduces the tax |
| Documentary fee | Part of the taxable amount |
| Service contract | Not taxed |
| Starting title fee in DMS Apex | $15 |
How Wyoming sales tax is worked out
Wyoming: the dealer does not collect the tax. The buyer pays the 4% state tax plus the county tax (type the county's additional rate) to the county treasurer before first registration, so the amounts shown are an estimate and are not added to what is due now. The price includes the documentary fee and other pre-sale costs, less a trade-in in the same transaction; extended warranties are left out. Title fee starts at $15.
Wyoming paperwork a dealer prints
DMS Apex prints these documents for a Wyoming deal, all in black and white:
- Buyer's Order
- Buyers Guide
Step-by-step form guides
- MV-300A Application for Certificate of Title: how to fill it out
This is general information, not legal or tax advice. Wyoming rules change: confirm current requirements with the Wyoming Department of Transportation or the Wyoming Department of Revenue.
Common questions
How much is sales tax on a used car in Wyoming?
4% state rate plus local tax. A trade-in reduces the taxable amount. See the table above and confirm the current rate with the Wyoming Department of Transportation or the Wyoming Department of Revenue.
Does a trade-in lower the tax in Wyoming?
Yes. In Wyoming the trade-in allowance reduces the amount the tax is figured on.
Is the dealer fee taxed in Wyoming?
Yes. In DMS Apex the documentary fee is part of the taxable amount for Wyoming.
Does DMS Apex print Wyoming dealer forms?
Yes. It prints Buyer's Order, Buyers Guide.
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