NIE in Spain: what it is and how to get one

What the NIE is

The Número de Identificación de Extranjero (NIE) is the identification number Spain assigns to foreigners for legal, tax and economic matters. You need it to buy property, open a bank account, sign an employment contract or register a business. The paperwork itself is manageable; for most people the real obstacle is getting the cita previa — the appointment at a police station or immigration office where the number is issued. This guide covers who needs a NIE, which form to use, what it costs and what to do about the appointment.

Why you need a NIE

• buying or selling real estate anywhere in Spain
• paying income tax, capital gains and municipal charges to the AEAT tax agency
• opening current or savings accounts, signing mortgages, investing in Spanish funds
• registering with Seguridad Social for healthcare and pensions
• incorporating a company, registering as autónomo, applying for state grants
• signing up for electricity, water, gas, internet or mobile contracts
• inheritance, donations, civil marriage, litigation

The NIE format

A NIE is a letter, seven digits and a check letter at the end. Historically the sequence started with X, Y or Z. The number is assigned once and stays with you for life — it does not change when you move from a student permit to a work visa or obtain Spanish citizenship.

Legal framework

The main legal reference is Organic Law 4/2000, together with its implementing regulation approved by Royal Decree 1155/2024 (linked in the sources below). The official processing time for an EX-15 application is up to five working days.

How EU citizens get a NIE

Staying longer than 90 days (form EX-18)

• book an appointment at the local Oficina de Extranjería — our guide to how cita previa works explains the booking flow
• complete form EX-18 in Spanish
• bring your passport with a photocopy and proof of means: a work contract, bank statement or private health insurance
• pay the 12.00 € fee with form 790-012, box Certificado de registro
• collect the green registration certificate with your NIE

Not residing in Spain (form EX-15)

• file at a Spanish consulate in your country of residence, or in Spain at a designated police station
• complete EX-15 and state your economic reason: a property purchase, company formation or a long-term lease
• pay the 9.84 € fee (Asignación de NIE) with form 790-012
• official processing time: up to five working days

How non-EU citizens get a NIE

Step-by-step EX-15 checklist

1. Get an appointment for the procedure Asignación de NIE in your province on the official cita previa portal.
2. Download the latest EX-15, print it single-sided and complete it in block capitals.
3. Fill in form 790-012, tick Asignación de NIE and pay the 9.84 € fee online or at a bank branch.
4. Gather supporting evidence: a preliminary purchase contract (arras), a notary letter, a Spanish job offer or a corporate invitation.
5. Attend the appointment, present your documents and sign the register.
6. Receive a printed NIE certificate on the spot or a PDF by email within days.

Which website actually gives out NIE appointments

Searching for the "NIE appointment website" returns a maze of lookalikes, so it is worth being explicit. Appointments exist in exactly one place: the official cita previa portal at icp.administracionelectronica.gob.es — the government directory at sede.administracionespublicas.gob.es simply routes you there. There is no official mobile app, and any app or service that offers to sell you a NIE appointment is reselling the same free slots everyone else is refreshing for; our guide on telling a legit alert service from a reseller explains the difference. Booking on the official portal is always free.

The hard part: getting the appointment

For most applicants the paperwork is the easy part — the bottleneck is finding a free appointment. Slots are published on the official portal in small batches and disappear within minutes in busy provinces, so checking the site manually a few times a day rarely works.

Cita Ping watches availability for Asignación de NIE in the province you choose and sends an alert by email or Telegram the moment appointments appear. You then book yourself on the official portal — Cita Ping never books on your behalf and cannot guarantee that a slot will still be free when you open the page. Create a monitor for your province, or browse the provinces to see what is covered. When an alert arrives, speed matters: our guide on how to get an immigration appointment quickly explains what to have ready.

Frequent mistakes

• ticking the wrong box on form 790-012: use Asignación de NIE for EX-15 and Certificado UE for EX-18
• submitting a passport without a sworn translation where one is required — Madrid asks for them for certain countries
• relying on a mobile browser that fails to load the calendar; switch to a desktop browser to book
• bringing a fee receipt without the original bank stamp: some police desks reject plain photocopies

FAQ

How long does a NIE remain valid?
Permanently. The number never changes, even when you renew a permit or obtain Spanish citizenship.

Can I renew my EU certificate online?
A replacement can be requested in the electronic office if you hold a Cl@ve credential, but a visit to the office is often faster.

What if I lose the NIE sheet?
Book a duplicate certificate appointment, pay the fee again and collect an official copy — it has the same legal value as the original.

Official sources

1. Spanish Police e-Office — NIE Assignment (EX-15)
2. Spanish Police e-Office — Fee Form 790-012
3. Spanish Police e-Office — EU Registration Certificate (EX-18)
4. Royal Decree 1155/2024 — Regulation of Organic Law 4/2000