Remove the custom license plate from the car you're selling before the buyer takes possession of it. If you’re purchasing a replacement (new or used) vehicle from a Dealer, you’ll automatically receive a new, standard license plate in the mail within 30 days. Take both the standard license plate and your custom license plate to your county tag office and for a small administrative fee, they’ll transfer your custom license plate to your replacement vehicle. You’ll turn in the standard license plate you received in the mail. If you’re purchasing a replacement vehicle from a private owner, the vehicle shouldn’t have a plate (since plates stay with the seller). Take your specialty (or prestige) license plate to your county’s tag office and for a small fee, they will transfer your specialty license plate to the vehicle you just purchased. This legally must be done within 7 days of purchasing the replacement vehicle. This process could vary from county to county so check with your local tag office just to be safe.