The seller must complete all applicable information and sign this form. The Bill of Sale or Even-Trade Bill of Sale must be notarized.A bill of sale is required to register a vehicle in Missouri, and the seller also needs to fill out a Notice of Sale (Form 5049). A motor vehicle bill of sale is between a buyer and a seller of a car, truck, or motorcycle. It is signed as the last step in the sales process. The document should be written to with the full details of the purchase and sale of the item that includes a notary acknowledgment at the time of signature. Seeking a Missouri bill of sale? We provide a free fillable template with in-depth guidelines and a document maker for customized forms.