You need to notify our office as well as the DMV. 1. In the red rectangle, marked "1", the seller enters the name and address of the BUYER.Learn about bills of sale in North Carolina for cars, boats, firearms, or other property. Access North Carolina bill of sale forms here! Not sure how to register your vehicle in North Carolina? Don't worry, we've got all the information you need! Mecklenburg County is responsible for assessing, billing, and collecting taxes on registered motor vehicles for months that were previously untaxed.