My Department compiles statistics on the number of tax discs issued rather than the number of vehicles that are taxed, either online or through local authorities. As motor tax can be paid annually, half-yearly or quarterly, many motorists will tax more than once during the year and may tax exclusively online, in a motor tax office or may avail of both options over the course of a given year.
There were just over 2.6m vehicles under current taxation at 31 December 2016. In total, 5,002,795 motor tax discs were issued in 2016. Of these 3,495,742 (70%) were applied for online and 1,507,053 (30%) in motor tax offices.