How to get a Spanish social security number (NUSS): A guide

To obtain your Spanish social security number (NUSS), you must submit a formal application to the Spanish Social Security Treasury (Tesorería General de la Seguridad Social). This unique identifier is essential for anyone intending to work, receive benefits, or contribute to the Spanish social security system, and it is distinct from your tax identification number.

What is the Spanish social security number (NUSS)?

The Número de la Seguridad Social (NUSS) is a unique, lifetime identification number assigned to every individual who interacts with the Spanish social security system. It is the number used to track your contributions, employment history, and eligibility for state benefits.

If you are planning to work in Spain, you will find that your employer needs this number to register you for social security contributions. If you are becoming self-employed, you will need it to register your activity. You can learn more about how we facilitate this process via our social security number in Spain (NUSS) service page.

Who needs a NUSS?

Anyone who is going to be part of the Spanish labour market or social system requires a NUSS. This includes:

• Employees hired by a Spanish company.
• Individuals registering as self-employed (autónomo). You might find our guide on how to register as Autonomo in Spain helpful if you are taking this path.
• Foreigners applying for certain residence permits that require evidence of social security registration.
• Individuals who are entitled to receive social benefits or pensions in Spain.

It is important to note that having a NUSS does not grant you the right to work; you must still ensure you have the correct residency and work authorisation. If you are unsure about your status, you may want to review our information on the Spanish NIE (foreigner ID number).

Requirements and documents

While requirements can vary depending on your specific circumstances and the local office, you will generally need to provide the following:

• A completed TA.1 form (Solicitud de afiliación/número de seguridad social).
• A valid passport or national identity card (for EU citizens).
• Your NIE (Número de Identidad de Extranjero) document.
• Proof of your employment contract or a document from your employer if you are being hired.

If you are applying as a self-employed person, you may need additional documentation related to your business activity. Always ensure that your documents are current and, if necessary, officially translated or apostilled, as requirements often differ by region and office.

The step-by-step process

There are several ways to apply for your NUSS, though the method often depends on whether you have a digital certificate.

1. Check your eligibility: Ensure you have your NIE and, if applicable, a valid work permit.
2. Prepare your documentation: Fill out the official TA.1 form accurately.
3. Submit the application: You can often submit this online via the official Seguridad Social website if you possess a Spanish digital certificate (FNMT).
4. In-person submission: If you cannot apply online, you may need to visit a local social security office (Administración de la Seguridad Social). Appointments are often mandatory.
5. Receive your number: Once processed, you will receive your NUSS document, which you should keep for your records.

Timelines and costs

There is no official government fee for obtaining a NUSS. However, the time it takes to receive your number can vary significantly depending on the volume of applications at your local office and whether you are applying online or in person.

While online applications are generally faster, technical issues or the need for additional documentation can lead to delays. We always recommend starting the process well in advance of your intended start date for work or your move to Spain.

Common mistakes to avoid

• Confusing NUSS with NIE: Many people mistake their tax identification number (NIE) for their social security number. They are separate systems managed by different government bodies.
• Incomplete forms: Ensure every field on the TA.1 form is filled out correctly, as errors are the most common cause of application rejection.
• Expired documents: Always check that your passport and residency documents are valid before applying.
• Not using a digital certificate: If you are already in Spain and have a digital certificate, applying online is much more efficient than queuing at an office.

What comes next?

Once you have your NUSS, you are officially registered within the system. If you are an employee, your employer will use this number to process your monthly contributions. If you are self-employed, you will use it to manage your own contributions and tax filings. If you ever need to check your status, you can request a work history report (Informe de Vida Laboral) to see your full record of contributions.

Frequently asked questions

Is the NUSS the same as my NIE?

No, they are completely different. The NIE is a tax and identification number for foreigners, whereas the NUSS is specifically for the social security system and tracks your work contributions.

Can I work in Spain without a NUSS?

No, you cannot be legally employed or contribute to the social security system without an assigned NUSS. Your employer will require it to register you before your start date.

Do I need to be in Spain to get a NUSS?

While it is often easier to handle these matters locally, it is possible to manage various administrative tasks remotely with the right professional support. We specialise in helping foreigners navigate these requirements from abroad.

How we can help

Navigating the Spanish bureaucracy can be overwhelming, but we are here to simplify the process for you. We can handle your social security registration remotely, ensuring your paperwork is correct and submitted efficiently. Request a free personal quote today to discuss how we can assist you with your move to Spain.