This template gives you everything you need for a professional, customizable and legally binding Bill Of Sale General Wisconsin.
No law requires one for casual sales. That said, having a written summary protects both parties in case of disagreement.
The item sold, buyer and seller contact details, transaction amount, and date. Add identifying info for items like bikes, instruments, or machinery.
Wisconsin DOT provides one for motor vehicles. For everything else, use a downloadable Bill of Sale format.