What documentation do I need to tax a new / imported vehicle, for personal use?

You need the following: (1) Form RF100 (from garage or NCT if imported). (2) Fee. When the vehicle has been taxed for the first time, a Vehicle Registration Certificate will then be issued to the owner by the Vehicle Registration Unit, Department of Transport in due course. Note: The vehicle is due to be taxed from the first day of the month of it's registration.