Resumen rápido
The Spanish Social Security number (NUSS) is the identifier assigned by Social Security, required before starting work or any registration. You request it free on Import@ss (portal.seg-social.gob.es) with the service to request the Social Security number, providing an ID document. It's the step before the affiliation number, generated with your first registration.
Datos rápidos
- What it is
- Social Security identifier (NUSS)
- Where
- Import@ss (portal.seg-social.gob.es)
- Cost
- Free
- When needed
- Before your first job registration
What the Social Security number is
The Social Security number (NUSS) is the identifier Social Security assigns to each person. It's required before starting work and for any affiliation procedure.
NUSS vs affiliation number
- NUSS: identifies you to Social Security, even before your first job.
- Affiliation number (NAF): generated with your first registration as a worker.
For most procedures, what you're asked for is the number on your Social Security documents.
How to get it online
- Go to Import@ss (portal.seg-social.gob.es).
- Find "Request the Social Security number".
- Attach your ID document (DNI/NIE) and follow the steps.
- You'll receive your number without travelling.
And then
With your number you can request your work-life report and the rest. GovEasy guides you through it all: see what we do for you.
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Preguntas frecuentes
Are the NUSS and affiliation number the same?
Not exactly. The NUSS identifies a person to Social Security before working. The affiliation number is assigned with the first registration as a worker. In practice, for many people they function as one.
Can I request it online?
Yes. Import@ss has a service to request the Social Security number where you attach your ID document and receive the number without going in person.
Do I need the NUSS to register as self-employed?
Yes. Having a Social Security number is a prerequisite for registering in the RETA and for any affiliation.
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