The Illinois Affidavit of Title and Bill of Sale By Seller is a legal document used by an individual or entity who is selling a motor vehicle in the state of Illinois. This document is used to transfer the title of the vehicle from the seller to the buyer. It includes the vehicle’s make, model, year, and VIN number, as well as other relevant details about the sale. There are two types of Illinois Affidavit of Title and Bill of Sale By Seller: The General Form and the Special Form. The General Form is a standard document that includes basic information regarding the sale of the vehicle. The Special Form includes additional information about the vehicle and the parties involved in the sale. Both forms must be signed by the seller and buyer and notarized in order to be valid.