The seller must complete all applicable information and sign this form. The Bill of Sale or Even-Trade Bill of Sale must be notarized.Learn about bill of sale requirements for the state of Missouri. Includes free Missouri bill of sale templates for cars, trucks, boats, firearms, and more. The Missouri Bill of Sale form is crucial for ensuring the accurate documentation of the sale and transfer of ownership of property with state regulations. A Missouri motor vehicle bill of sale is a legal document used in the sale and purchase of a motor vehicle. The Missouri DMV bill of sale form is an application executed when personal property is transferred (this form is specific to a motor vehicle). 1. Gather all necessary details such as purchaser and vehicle information.