A Pennsylvania vehicle bill of sale is a legal document formalizing the sale and purchase of a motor vehicle between a buyer and seller. 1. Enter the Buyer and Seller's details.The buyer and seller should meet at a notary, tag service, or motor vehicle dealer to ensure the title application is completed correctly. Use a Business Bill of Sale to set out the terms for the sale of a business and transfer the ownership and all assets to the buyer. The contractual paperwork catalogs the particulars of the sale, including the buyer, seller, sale item, and sale terms, in detail. Download a simple bill of sale form in Pennsylvania, to be customized as per your need.