It serves as proof of a legal change of ownership and reflects details of the sale like the vehicle's age and condition at the time of purchase. The buyer will need a signed copy to register any vehicle transfer with the Secretary of State.Create Document. PDF. Fill. Download. Word. Motor Vehicle (DMV) Bill of Sale Form Affirms the information contained in a transaction of a vehicle for a payment amount. If you are leasing the vehicle from an out-of-state retailer, you must use Form RUT-25-LSE to report the transaction. A bill of sale should be detailed and precise. Free Illinois Bill of Sale Forms. Legally transfer ownership of items in Illinois, whether through a sale or purchase, with a Bill of Sale (BOS). The Electronic Registration and Title (ERT) System allows you to complete and print an Application for Vehicle Transaction(s) (VSD 190). Just click one of the links below to download or print our blank forms and legal documents.