Section R865-19S-30 - Sale of a Vehicle or Vessel by a Person Not Regularly Engaged in Business Pursuant to Utah Code Ann. Section 59-12-104A. This rule provides guidance on the sale of a vehicle or vessel by a person not regularly engaged in business for purposes of Subsections 59-12-104(13) and (17).B. For purposes of calculating sales and use tax on the sale of a vehicle where no trade in was involved, the bill of sale or other written evidence of value shall contain the names and addresses of the purchaser and the seller, and the sales price and vehicle identification number of the vehicle.C. For purposes of calculating sales and use tax on the sale of a vehicle when the seller has received a trade-in vehicle as payment or partial payment, the bill of sale or other written evidence of value shall contain all of the following: 1. the names and addresses of the buyer and the seller;2. the purchase price of the vehicle;3. the value allowed for the trade-in vehicle;4. the net difference between the vehicle traded and the vehicle purchased;5. the signature of the seller; and6. the vehicle identification numbers of the vehicle traded in and the vehicle purchased.D. In the absence of a bill of sale or other written evidence of value, the fair market value of the vehicle or vessel shall be determined by industry accepted vehicle pricing guides.Utah Admin. Code R865-19S-30