What happens to the plates?
Off — and the unused months become a credit on your next vehicle
Selling earns a credit here, not a refund. It can only go toward one replacement vehicle. A $5 credit transfer fee is due, and any credit above that vehicle's fees is lost. The seller removes the plates and the vehicle is then unlicensed. This plate rule does not apply to snowmobiles, off-highway vehicles, prorate trucks and trailers, antiques, collectors, DAV and POW plates, or government vehicles. NDDOT's registration manual: an owner who has removed plates from a vehicle at the time it was transferred is allowed a credit towards the registration fees on a replacement vehicle, based on the number of unused months left. The plate number the credit is calculated from must be noted on the application, and the credit counts each month left after the month of the sale. Apply for the transfer within 30 days of buying your replacement vehicle.
Source: NDDOT Motor Vehicle Registration Manual