Free Wyoming Trailer Bill of Sale
A Wyoming trailer transfer walks the same two-desk courthouse route as every Wyoming vehicle: the county CLERK in the buyer's county seat issues the Certificate of Title, and the county TREASURER collects the flat 4% sales tax before the trailer's first registration in Wyoming. There's no central WYDOT branch to visit, no inspection to schedule, and no local tax variation across the 23 counties. The bill of sale fixes the price and the date; the two county offices do the rest.
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Trailer titling rules trip up many sellers — GVWR thresholds, separate boat trailer titles, and state notarization requirements all vary. Our step-by-step writing guide walks you through the fields DMVs commonly ask for. Read: How to Write a Bill of Sale (Step-by-Step) →
Wyoming Trailer Bill of Sale — What You Need to Know
Primary Form
Standard bill of sale
Certificate of Title Application (county clerk)
Primary ID Field
VIN
Sales Tax
4%
Title Required
Yes
WY titles trailers. Title application at the county clerk (sales tax to the county treasurer), 45-day title deadline for an ordinary private sale.
Inspection
Not required
Sales Tax Details
Same 4% flat sales tax on trailers.
Wyoming Trailer Sale — Step-by-Step Checklist
- Verify the VIN or serial plate on the tongue against the Wyoming title.
- Write the bill of sale with VIN/serial, type, weight, sale price, an exact date, and both signatures.
- Seller signs the title over before a notarial officer (notary).
- Buyer takes the signed title to the county CLERK at the county seat for the new Certificate of Title.
- Buyer pays the flat 4% sales tax at the county TREASURER before the trailer is first registered.
- Handle both desks in one courthouse visit — clerk first, treasurer second — and both clocks resolve together.
- No inspection applies to Wyoming trailers.
Common Pitfalls
- Completing only one desk — a titled-but-untaxed (or taxed-but-untitled) trailer is a half-finished Wyoming transfer.
- Letting the 45-day title and registration window lapse — the treasurer collects the tax before first registration.
- Hunting for a WYDOT office — private trailer transfers live at the county courthouse.
- Expecting county rate differences — Wyoming's 4% is uniform in all 23 counties.
Pro Tip
Wyoming trailers: clerk for the title, treasurer for the flat 4% before registration — one courthouse, two desks, zero inspections.
Wyoming Trailer Bill of Sale — FAQs
How is a trailer titled in Wyoming?
Through the county clerk at the county seat of the buyer's home county — the clerk issues the Certificate of Title from the seller-signed title (and a bill of sale if the clerk asks for one). The related tax stop is the county treasurer, who collects the flat 4% before first registration.
What tax applies to a Wyoming trailer purchase?
A flat 4% sales tax, identical across all 23 counties, paid to the county treasurer. It is collected before the trailer's first registration in Wyoming, which is due within 45 days of an ordinary private sale — one more reason the bill of sale should carry an exact date.
Does Wyoming inspect trailers?
No — no safety or emissions inspection applies to trailers in Wyoming. The transfer is entirely documentary: signed title (plus a bill of sale if the clerk asks) to the county clerk, the 4% to the county treasurer, done.