NIE Number, NIE Certificate, EU Registration and TIE: The Differences Explained
Short answer: the NIE is a personal identification number for foreigners in Spain. It appears on different documents depending on your situation: a non-resident NIE certificate if you do not live in Spain, an EU registration certificate if you are an EU citizen resident in Spain, or a TIE card if you are a non-EU resident. To buy property, what you need is the number itself; you do not have to be resident.
What is an NIE number?
NIE stands for Número de Identidad de Extranjero. It is a unique, personal and non-transferable number that identifies a foreign national before the Spanish authorities, including the tax agency. It begins with a letter (X, Y or Z), followed by seven digits and a control letter, for example Y1234567-A. The number stays the same for life, even if the document that shows it changes.
The four documents compared
| Document | Who it is for | What it proves |
|---|---|---|
| NIE certificate (non-resident) | Foreigners who do not live in Spain but need to carry out financial, property or tax transactions | Your NIE number only |
| EU registration certificate | EU, EEA and Swiss citizens living in Spain for more than three months | Registration as a resident, with your NIE |
| TIE (Tarjeta de Identidad de Extranjero) | Non-EU nationals with residence permission, including UK nationals covered by the Withdrawal Agreement | Residence status, with your NIE and photo |
| NIF / DNI | Spanish nationals | Not applicable to foreigners |
Which one do you need to buy property?
Any of them works, because the notary and tax authorities need your NIE number. Most non-resident buyers obtain a non-resident NIE certificate before completion. You need the number to sign the deed, pay purchase taxes, open a Spanish bank account and connect utilities. See our guide to the NIE number for property buyers.
How to get a non-resident NIE
- In Spain: book an appointment at a police foreigners’ office (Extranjería), with form EX-15, your passport and proof of the reason (for example, a reservation contract), and pay the administrative fee using form 790 code 012.
- Abroad: apply through the Spanish consulate in your country of residence.
- Through a representative: a lawyer can often apply on your behalf with a power of attorney, which saves a trip.
Appointment availability varies a lot by area, so start early. A full step-by-step guide is in how to get an NIE number in Spain.
What else is an NIE used for?
- Opening a Spanish bank account and arranging a mortgage
- Buying, selling or insuring property
- Paying taxes, including annual non-resident income tax
- Working, registering with social security and being paid
- Buying or registering a car and exchanging a driving licence
- Connecting utilities and inheriting assets in Spain
Frequently asked questions
Does the NIE number expire?
No, the number is yours for life. Some certificates show an issue date, and certain banks or notaries may ask for a recently issued document, but the number does not change.
Is the NIE the same as residency?
No. A non-resident NIE certificate only gives you a number. Living in Spain requires registering as a resident (EU citizens) or holding a residence permit and TIE (non-EU citizens).
Do both spouses need an NIE to buy a property together?
Yes. Every buyer who will appear on the deed needs their own NIE.
Related guides
Buying property and need an NIE?
Most property lawyers can obtain it for you as part of the purchase.
General information. Procedures, forms and fees can change; check the current requirements with the issuing office or your lawyer.
Sophie Gutenberg is a legal content specialist focused on Spanish property law, real estate transactions, conveyancing, due diligence and tax issues affecting international property buyers in Spain. She works alongside qualified Spanish property lawyers .
