A bill of sale is a legal document that records the transfer of ownership of an asset to a second party in exchange for money. A Pennsylvania vehicle bill of sale is a legal document formalizing the sale and purchase of a motor vehicle between a buyer and seller.This form is used to obtain a Pennsylvania Certificate of Title for vehicles not currently titled in Pennsylvania, or which were repossessed (1. When selling your vehicle in Pennsylvania, signing over the car title will transfer ownership from seller to buyer. The answer is yes you need the title in hand, as well as a bill of sale to pay the sales tax, in order to register the car. If there is not a space on the title to enter a purchase price, a bill of sale must be provided. A notarized bill of sale may be required in some cases. A bill of sale helps the buyer prove their ownership of the item and gives the seller a record stating that they are no longer responsible for the sold asset. You can go to any firearms dealer and fill out the paperwork. You will be charged a fee and this fee can vary.