What is a NIE number in Spain?
NIE stands for Número de Identificación de Extranjero (Foreigner’s Identification Number), and it's a Spanish ID.
NIE (Número de Identificación de Extranjero) is an identification number issued by the National Police that can be used as a tax ID for foreigners in Spain. It is mandatory for any foreigner who has legal or economic interests in Spain.
It’s a unique, personal, and permanent number assigned to every foreigner who has economic, professional, or social dealings in Spain. The number itself follows a format like X-1234567-Y and will be yours for life, even if you leave Spain and come back years later.
Think of it as the Spanish equivalent of a National Insurance Number. It doesn't, on its own, grant you the right to live in Spain, but you’ll need it for almost every administrative task you can think of.
Does the NIE expire?
The number itself is permanent for life once assigned.
However, the paper certificate you receive after you apply and submit for your Spain NIE number may sometimes cause practical issues: historically, some certificates were treated as having limited presentation validity (often referenced as 3 months), and some offices/notaries may be picky with older printouts, so you may occasionally need a fresh certificate reprint, even though the number stays the same (and again, is just a reprint).















