Anyone who wishes to carry-out any one of a large number of transactions in Spain may need to obtain an NIE number. For example, if you wish to rent, buy or inherit a property in Spain will need to arrange an NIE (Número Identidad Extranjero – Foreigner’s Identity Number). An NIE will also be necessary for arranging a large number of personal activities such as arranging utilities, getting a mobile phone, registering with local authorities or health-centres etc
While the NIE number is the same number as that which appears on a TIE (foreigners identity card), the NIE is merely a fiscal number and it should not be confused with a right to residency.
An NIE can be arranged on your behalf by a legal representative appropriately empowered via a power of attorney.