Wisconsin car — quick answer
In Wisconsin, a car bill of sale is recommended and notarization of the title transfer is not required. The state form used for titled vehicles is MV1. Titling and registration are handled by the Wisconsin DMV.
Is a car bill of sale required in Wisconsin?
Recommended. Transfer is by the title assignment plus the MV1 application; a sample bill of sale is in the MV2928 instructions.
Seller assigns the title; the buyer titles and registers with WisDOT (the seller can notify online).
Does a Wisconsin car bill of sale need to be notarized?
Not required. No notarization required.
What to include on a Wisconsin car bill of sale
- Buyer and seller full legal names and addresses
- Year, make, model, and color of the car
- 17-character VIN
- Odometer reading at the time of sale
- Agreed price and how it was paid
- Date and both signatures
How to transfer a car in Wisconsin
- 1Complete the bill of sale and title assignment.
Record the buyer, seller, price, odometer, and date. Both parties sign and date.
- 2Hand over the signed title.
Seller assigns the title; the buyer titles and registers with WisDOT (the seller can notify online).
- 3Register with the Wisconsin DMV.
The buyer titles and registers the car, bringing Title & License Application (MV1) / Selling Instructions (MV2928). Confirm current fees on the official page.
Odometer disclosure
Federal law requires a written odometer disclosure when title is transferred for vehicles less than 20 years old. As of 2026 that means model year 2011 and newer; model year 2010 and older are generally exempt. Record the exact mileage — never round it. See the NHTSA rule.
Official sources
Requirements change and can vary by county. Confirm with the Wisconsin DMV before you sign. Not legal advice.
Wisconsin Car Bill of Sale — FAQ
Is a car bill of sale required in Wisconsin?
A bill of sale is recommended in Wisconsin. Transfer is by the title assignment plus the MV1 application; a sample bill of sale is in the MV2928 instructions.
Does a Wisconsin car bill of sale need to be notarized?
No. No notarization required.
How do I write a bill of sale for a car?
List the buyer and seller, describe the car (year, make, model, VIN, color), record the odometer and the price, add the date, and have both parties sign. Our generator builds all of this for you and checks for missing details.
Can I sell a car without a bill of sale?
In some states you can transfer with just the signed title, but a bill of sale is strongly recommended everywhere because it documents the price, the mileage, and the date you stopped being responsible for the car.
Is a bill of sale proof of ownership?
Generally no. For titled property like a car or boat, the title is what proves ownership. A bill of sale proves that a sale happened and records the price, date, and terms — it supports the title transfer but does not replace it. For untitled property (furniture, equipment, electronics), the signed bill of sale is usually the main proof of ownership.