Applying for an NIE Number in Spain: Everything You Need to Know (2026)

What is an NIE Number?

The NIE number (Número de Identificación de Extranjeros) is a personal identification number for foreigners in Spain.

It is a unique and exclusive number issued by the Spanish police and is used for all tax and administrative purposes.

The NIE number is comparable to:

• the Dutch citizen service number (BSN)
• the Belgian national registration number 

Spanish citizens have a DNI (Documento Nacional de Identidad), which includes a tax identification number known as the NIF (Número de Identificación Fiscal).

For foreigners, the NIE serves the same purpose: one single number used for everything.

Why Do You Need an NIE Number?

An NIE number is mandatory if you plan to stay in Spain for more than three consecutive months.

However, even for shorter stays, it is often required for practical matters.

You will need an NIE number for:

• Applying for a mortgage in Spain 
• Buying or renting a property 
• Working in Spain 
• Opening a Spanish bank account 
• Taking out insurance 
• Buying a car with Spanish registration 
• Filing taxes 
• Social security registration 
• Phone and internet contracts 
• Utility connections (electricity, gas, water) 



In short: without an NIE number, it is almost impossible to arrange anything in Spain.

Is an NIE Number Mandatory?

Yes, if you stay in Spain for more than three consecutive months, an NIE number is legally required.

One important advantage is that once issued, the NIE number is valid for life. In the past, it had to be renewed periodically, but this is no longer the case.

Types of NIE Numbers

There are two types of NIE numbers, depending on your situation:

NIE certificado con carácter permanente

For individuals staying in Spain for more than three months, for example for:

• work 
• study 
• relocation 
• purchasing property 

NIE certificado con carácter temporal

For individuals staying in Spain for less than three months but who still require a fiscal number for administrative purposes.

How Do You Apply for an NIE Number?

There are two main ways to apply for an NIE number:

1. Applying in Your Home Country

You can apply through the Spanish embassy or consulate in your home country.

Keep in mind:

• longer processing times 
• appointment required 
• limited availability 

This is a good option if you want to arrange everything in advance. It is also generally cheaper to do it yourself rather than hiring a third party.

2. Applying in Spain

Most people apply for their NIE number in Spain at a police station that handles foreign affairs.

You will usually need:

• a valid passport 
• completed application forms (EX-15 and form 790-012) 
• a reason for the application (e.g. buying a property)
• proof of payment of the administrative fee (tasa) 

3. Do You Need a Spanish Address?

When completing the application forms, you are required to provide a Spanish address.

This can be challenging if you do not yet own or rent a property but need an NIE number to proceed.

A practical solution is to temporarily use the address of:

• friends or family 
• a real estate agent or mortgage advisor
• an employer 
  
  

4. Tips for a Smooth Application

• Apply for your NIE number early to avoid delays 
• Ensure all forms are correctly completed 
• Book your appointment well in advance 
• Consider working with an advisor if needed 

Conclusion

An NIE number is an essential requirement for arranging anything in Spain. Whether you are buying a property, applying for a mortgage, or planning to work — without an NIE number, you cannot proceed.

By applying in time and being well prepared, you can avoid delays and ensure a smooth start to your plans in Spain.

If you also need help financing a property in Spain, Blue Coast Advice is here to guide you with expert advice and support throughout the mortgage process.