There has been some confusion since the introduction of the euro as regards the plurals of the words "euro" and "cent". A directive published by the EU shortly after the currency's introduction instructed that on official documentation, the plurals of "euro" and "cent", in all languages, were to remain as the singular. This caused lot of bother, particularly in Italy where stacks of documents had to be shredded because they used the word "euri" as their plural for "euro".

In Ireland, the media formally use "euro" and "cent" as both singulars and plurals, but the use of "euros" and "cents" is widespread in everyday language. Indeed, the word from Europe is that there is no official plural for those words in any of the various EU languages, and that the plurals will naturally take shape according to how each language's speakers evolve them.