Bill of Sale Form for a Trailer: What It Is and What It Should Include

When you buy or sell a trailer — whether it's a utility trailer, boat trailer, horse trailer, or enclosed cargo trailer — a bill of sale is the document that records the transaction. It's not the title, and it's not a registration form. It's a written record that a sale happened, who was involved, what was sold, and for how much.

In many states, a trailer bill of sale is required to complete a title transfer or first-time registration. In others, it's not legally mandated but still strongly recommended. Either way, having one protects both the buyer and the seller.

What a Trailer Bill of Sale Actually Does

A bill of sale serves several practical purposes:

• It documents the transfer of ownership from seller to buyer
• It records the agreed sale price, which some states use to calculate sales tax
• It protects the seller if the buyer later uses the trailer in a way that creates liability
• It gives the buyer proof of purchase if the title transfer is delayed or disputed
• It establishes a paper trail for DMV or tax authority purposes

Without a bill of sale, it can be difficult to prove when ownership changed hands — or that a private sale happened at all.

What a Trailer Bill of Sale Form Should Include

Most state-accepted trailer bill of sale forms — or a valid privately drafted version — contain the same core fields:

The VIN (or trailer serial number) is one of the most important fields. Trailers manufactured after a certain date are required to have a VIN, and states use that number to verify the trailer's identity and check for liens or theft records.

How Trailer Bills of Sale Differ from Car Bills of Sale 📋

Trailers are titled and registered differently than motor vehicles in many states, and the bill of sale reflects some of those differences:

• No odometer disclosure is typically required for trailers, since most don't have odometers
• Weight ratings (GVWR — Gross Vehicle Weight Rating) may need to be listed, because some states have different registration rules or fees based on trailer weight
• Homemade or custom-built trailers may require additional documentation alongside the bill of sale, since there's no manufacturer title to transfer
• Some states treat small utility trailers (under a certain weight) differently than larger trailers, with simplified or no title requirements — but a bill of sale may still be needed for registration

Where to Get a Trailer Bill of Sale Form

You have a few options:

• Your state's DMV website — Many states publish a standardized bill of sale form for trailers, either as a separate document or combined with the general vehicle bill of sale
• The county clerk or tax assessor's office — In some states, these offices handle vehicle and trailer registration instead of a centralized DMV
• A blank form you create yourself — In most states, a bill of sale doesn't have to be on an official form, as long as it includes all required information and is properly signed

If your state provides an official form, using it is usually the safest path. It's formatted to meet local requirements and is immediately recognized by the agency processing the title or registration.

When Notarization Is Required

Some states require that a trailer bill of sale be notarized — meaning both parties sign in front of a licensed notary public who then stamps and signs the document. Others accept an unnotarized signature.

This varies widely. States that require notarization for motor vehicle bills of sale don't always apply that same requirement to trailers. And within states, the requirement may depend on trailer type or weight class.

The Variables That Shape What You'll Need 🔍

Whether you're buying a small open utility trailer or a large enclosed horse trailer, the exact requirements you'll face depend on:

• Your state's titling rules — Some states title all trailers; others exempt small or lightweight trailers entirely
• Trailer type and weight — GVWR thresholds determine registration categories in many states
• Whether the trailer has an existing title — If the previous owner titled the trailer, you'll typically need both the signed title and the bill of sale to transfer ownership
• How the trailer was built — Factory-built trailers come with manufacturer documentation; homemade trailers may need a state inspection or affidavit in addition to a bill of sale
• Whether a lien exists — If the seller financed the trailer, the lienholder's release may be required before a clean title can transfer

A used trailer bought privately at a good price can become a paperwork headache if the title is missing, the VIN is obscured, or the seller's name doesn't match the title. The bill of sale won't fix those problems on its own — but it does document your side of the transaction clearly.

The specific form, fields, fees, and filing process you'll need all depend on which state you're registering in, what type of trailer is changing hands, and what documents the previous owner can provide.