Some of the all important ID numbers and documents that you need to know about if you live in Spain including the NIE (Número de Identidad de Extranjero), CIF(Certificado de Identificación Fiscal) and NIF (Número de Identidad de Extranjero)
The immigration service issues this number to you once you have made your application in person at your nearest office. This is your identification number in Spain and is is needed for any of the following:
Both EU citizens and non-EU citizens get issued a NIE.
The NIE consists of an 'X' followed by 7 or 8 digits then another letter.
This is the ID number for Spanish citizens. The same number is used for one's driver's license.
This is the generic term for the tax ID number for all individuals. For Spaniards, it's the DNI plus one letter; for foreigners, it is your NIE.
If you're a nonresident who has to pay taxes in Spain, you may get a NIF issued to you without having a NIE. This, of course, does not mean you get automatic residency in Spain, nor will it make it easier to get residency.
This is the tax ID number for all companies. It consists of a letter followed by 8 digits. The letter represents the type of company, the most common being an 'A' for Sociedad Anónima or a 'B' for Sociedad Limitada.
This is 'ES' followed by the CIF.
Your employer applies for this number when you start your first job in Spain. This number then stays with you for all subsequent jobs. If you are self-employed, you apply yourself for this number.
This is the employer's social security number.