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. A Missouri bill of sale is a legal document that records the sale and transfer of personal property. It is commonly used for motor vehicles. I have a question about needing to report the sale to MODOR. A Missouri general bill of sale is a legal document that is usually utilized between a seller and a buyer to record the sale and purchase of personal property.