Library File Link. 48-2004. Purpose. Title Transfer Bill of Sale.The motor vehicle seller must insert the sales price, nonresident state and Arizona county tax rates and complete all mathematical calculations. Whether you buy a used car from a dealer, a co-worker, or a neighbor, follow these tips to learn as much as you can about the car. An AZ DMV notarized bill of sale is a legally recognized document used in Arizona for vehicle transactions. It's essential for transferring ownership.