How to get a NIE Number in Spain? The NIE Number, (Número de Identidad de Extranjero) is a mandatory tax identification number for all non-Spanish citizens and is one of the most important documents that you’ll need as a worker, ex-pat, a foreign student or a homebuyer in Spain.
It’s basically a unique code that allows you to pay tax, open a bank account, pay utility bills and purchase a property. Simply put, it keeps track of all your legal and financial activities in Spain. An NIE number is mandatory for all foreigners with any financial affairs in Spain, regardless of whether they are a resident or non-resident.
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