A trailer bill of sale documents the private sale of a utility, cargo, horse, flatbed, or dump trailer: identification number, axles and load rating, price, and as-is terms. It is often the only ownership paper a small trailer has, because many states do not title light trailers at all.
That is exactly why the document matters: for an untitled trailer, the bill of sale is the proof of ownership the registration office and any future buyer will ask to see.
Titled, registration-only, or exempt: know which trailer you have
States split trailers into three regimes. Heavier trailers, often above 2,500 to 4,000 pounds GVWR depending on the state, are titled like cars. Lighter ones may be registration-only: they get a plate but no title, and ownership travels with the bill of sale. A few categories, like small farm trailers in some states, are exempt from both. This template asks whether the trailer is titled and writes the transfer language accordingly, so a registration-only trailer does not promise a title that does not exist.
Homemade trailers
A homemade trailer can be sold like any other, but the buyer's state will usually require an inspection and assign a serial number or VIN before registering it. Note "homemade" as the make and use the state-assigned number if one exists.
The details that prevent trailer disputes
- The VIN or serial number from the tongue plate, matched against the title if there is one
- GVWR from the plate: it drives registration class, and misstating capacity is a safety issue
- Axle count and deck size, which identify the trailer if the plate is ever lost
- Whether ramps, spare tires, winches, or tie-down equipment are included
- The real price: registration offices assess tax on it in most states
Stolen trailers are a genuine problem: they are easy to tow away and easy to repaint. A buyer should match the VIN plate against the seller's paperwork and be suspicious of a trailer with a missing or drilled-out plate; a seller should insist on recording the buyer's name and address, because an abandoned trailer traces back to its registered owner.
Lights, plates, and the tow home
The buyer tows the trailer home on day one, which raises a practical question no car sale has: whose plate is on it? Rules vary; some states let the buyer use the seller's plate for a direct trip home, others require a temporary permit. Check lights, safety chains, coupler, and tire condition before towing: the buyer accepted the trailer as-is the moment the paper was signed. Then register within the state deadline and, if the trailer is titled, complete the title transfer at the same visit.
GVWR and your driver license
Heavy trailer and truck combinations can exceed the 26,000-pound threshold where commercial licensing rules begin. Buyers of large equipment trailers should verify what their license and their tow vehicle legally allow.
Frequently asked questions
Do I need a title to sell a trailer?
Only if the trailer is titled in your state, which typically depends on its weight. Many light utility trailers are registration-only or exempt, and for those the bill of sale is the ownership document. If a title exists, it must be signed over with the sale.
Does a trailer bill of sale need to be notarized?
In most states, no. A few states require notarization for titled trailer transfers, so check with the registration office in the buyer's state. Signatures from both parties and a copy for each are the baseline.
Where is the VIN on a trailer?
On a metal plate or sticker riveted to the tongue or the front of the frame. Titled trailers show the same number on the title. If the plate is missing, most states can inspect the trailer and assign a number, but sort that out before the sale, not after.
How do I sell a homemade trailer?
Describe it as homemade, include the state-assigned serial number if it was ever registered, and state its dimensions and axle configuration. The buyer's state will typically inspect it and assign an identification number before issuing a registration.
Who pays sales tax on a private trailer sale?
The buyer, when registering the trailer, based on the price in the bill of sale in most states. Trailers under a registration-exempt threshold may escape registration but the bill of sale still documents the ownership change.