adicional de IUC
Published 8 November 2026, 22:53
adicional de IUC (surcharge on car tax)
A surcharge on the annual IUC for diesel cars. It was introduced in 2014 and has been extended by every budget since. For cars registered after July 2007 it is €5.02 to €68.85 a year depending on engine size; for older ones, €1.39 to €25.01. It is paid together with IUC on a single payment document.
Where you come across it. The IUC payment document for a diesel car, working out the cost of ownership.
The year-of-registration coefficient does not apply to it: the amount is fixed.