Free Iowa Trailer Bill of Sale

Iowa Trailer Bill of Sale — What You Need to Know

Sales Tax Details

Iowa's One-Time Registration Fee of $10 plus 5% of the price (a fee for new registration, not a sales or use tax) applies to trailer purchases. Collected by the county treasurer at the time of title and registration.

Exemption: Farm trailers used exclusively for agricultural transport between farm properties may qualify for registration exemptions under Iowa Code § 321.18 — consult the county treasurer for eligibility.

Inspection Requirements

Iowa does not require a trailer safety inspection at the point of sale or registration. There is no emissions testing requirement for trailers in Iowa.

Registration

Registration for this vehicle type is handled by Iowa Department of Transportation, Motor Vehicle Division — processed at county treasurer offices — not the same agency that handles cars in Iowa. Plan for separate filings.

Iowa Trailer Sale — Step-by-Step Checklist

1. Determine the trailer's empty weight (not its GVWR): check the current registration or the manufacturer's paperwork. An empty weight over 2,000 lbs requires a title transfer; 2,000 lbs or less requires registration only.
2. For titled trailers: seller signs the back of the Iowa Certificate of Title over to the buyer, completing all required fields including odometer (if applicable) and sale price.
3. For registration-only trailers: seller provides the current Iowa registration certificate and a signed bill of sale — no title exists to transfer.
4. Both parties complete a bill of sale recording the VIN (or serial number for older trailers), GVWR, year, make, model, sale price, date, and both parties' full names and addresses.
5. Seller removes Iowa trailer registration plates — Iowa is a plates-to-owner state and trailer plates belong to the seller.
6. Buyer visits a county treasurer's office within 30 days with the signed title (if applicable), a bill of sale (or the Transfer/Sale Date section on Iowa titles issued since September 2023), and Iowa DOT Form 411007.
7. Buyer pays the 5% One-Time Registration Fee on the sale price plus applicable title and registration fees.
8. Buyer receives new Iowa registration and, for trailers with an empty weight over 2,000 lbs, a new Iowa title in their name.

Common Pitfalls

• Not checking the empty weight before the sale: a seller who provides only a bill of sale (no title) for a trailer that actually weighs over 2,000 lbs empty will cause the buyer's title transfer to fail at the county treasurer — the seller must locate or apply for a replacement title before the sale can close.
• Iowa plates left on the trailer: trailer registration plates in Iowa belong to the owner, not the trailer. A buyer who tows the trailer away using the seller's plates is operating with unregistered equipment.
• Missing or illegible VIN/serial number: older trailers may have faded or damaged serial number plates. Iowa county treasurers require a verifiable identifier for title and registration — have the serial number inspected and, if necessary, obtain an Iowa DOT-assigned number before listing.
• Assuming farm trailers are exempt without verifying: Iowa Code provides agricultural registration exemptions for certain farm trailers, but the scope is narrow and county treasurers apply these rules differently. Do not assume an exemption applies without confirming with the specific county office.

Pro Tip

Iowa trailer transactions are simplified by the absence of an inspection requirement and the fact that the seller has no post-sale filing obligation. The critical pre-sale step is determining the trailer's empty weight accurately: get this number from the registration or manufacturer's paperwork, not from memory or the listing. If the trailer's ID plate is missing or unreadable, contact Iowa DOT MVD before listing — resolving identifier issues in advance prevents the deal from stalling at the county treasurer's office.

Iowa Trailer Bill of Sale — FAQs