A Wisconsin Bill of Sale is a legal document used to transfer the ownership of items such as vehicles, boats, firearms, animals, and other personal property from one person to another. It is a written record of the transfer of ownership and serves as proof of the transaction by providing evidence of the sale. This document is required by law in Wisconsin for any transfer of ownership of certain items. There are three main types of Wisconsin Bill of Sale that can be used: a Vehicle Bill of Sale, a Boat Bill of Sale, and a Firearm Bill of Sale. A Vehicle Bill of Sale is used to transfer the ownership of a motor vehicle from one person to another. This document must include the make, model, and year of the vehicle, as well as details about the buyer and seller. A Boat Bill of Sale is used to transfer the ownership of a boat from one person to another. This document must include the make, model, and year of the boat, as well as details about the buyer and seller. A Firearm Bill of Sale is used to transfer the ownership of a firearm from one person to another. This document must include the make, model, and serial number of the firearm, as well as details about the buyer and seller.