An automobile dealer has several new cars in inventory, but often does not have the right combination of body style, color, and accessories. In some cases the dealer makes an offer to sell a car at a certain price, accepts a deposit, and then orders the car from the manufacturer. When the car is received from the manufacturer, the sale is closed, and the dealer receives the balance of the sales price. At the end of the current year, the dealer has deposits totaling $8,200 for cars that have not been received from the manufacturer. When is the $8,200 subject to tax?