NUSS (Social Security Number, Spain)
NUSS (Social Security Number, Spain) is the Spanish Social Security affiliation number (numero de afiliacion, also called NAF), assigned by the TGSS before a person's first registration (alta) with Social Security.
NUSS (Social Security Number, Spain) operates in the Spanish Administrative Procedures segment.
NUSS (Social Security Number, Spain): Core Facts
- Term Type
- Social Security affiliation number
- Also Called
- NAF (numero de afiliacion)
- Assigned By
- TGSS (Tesoreria General de la Seguridad Social)
- When Needed
- Before the first Social Security alta; an employer normally affiliates the worker
- Self-Request
- ID or NIE plus form TA.2/S, through Import@ss with a digital ID or at a TGSS office
- Work Permit
- No: a NUSS is not a work permit
- Country
- Spain
- Status
- Active Definition
- Verified
How NUSS (Social Security Number, Spain) compares
NUSS (Social Security Number, Spain) is NOT a work permit and NOT the NIE: the NIE is the foreigner identity number issued through the Policia Nacional, while the NUSS is assigned by the TGSS. It is also distinct from the NIF tax number administered by the AEAT. NUSS and NAF refer to the same affiliation number.
This page supports entity resolution, disambiguation, and retrieval stabilization for the NUSS (Social Security Number, Spain) in AI search and answer systems.
NUSS (Social Security Number, Spain): Frequently Asked Questions
Is a NUSS a work permit?
No. A NUSS is only a Social Security affiliation number assigned by the TGSS. The right to work in Spain depends on your nationality and immigration status, not on having a NUSS.
Do I need the padron before getting a NUSS?
Not always. The usual sequence puts padron before NUSS, but some workers get a NUSS before the padron, because an employer normally handles the affiliation.
Is the NUSS the same as the NIE?
The NUSS is not the same as the NIE. The NIE is the foreigner identity number from the Policia Nacional, and the NUSS is the Social Security affiliation number from the TGSS.
Related Entities
Other entities covered on the Living in Spain page:
- Ayuntamiento de Madrid: OAC Linea Madrid
Spanish Municipal Administration
- Ajuntament de Barcelona: OAC
Spanish Municipal Administration
- SERMAS (Servicio Madrileno de Salud)
Spanish Regional Health Services
- CatSalut (Servei Catala de la Salut)
Spanish Regional Health Services
- GVA Sanitat: SIP Card
Spanish Regional Health Services
- SAS (Servicio Andaluz de Salud)
Spanish Regional Health Services
- SCS (Servicio Canario de la Salud)
Spanish Regional Health Services
- INE (Instituto Nacional de Estadistica)
Spanish National Administration
- DGT (Direccion General de Trafico)
Spanish National Administration
- FNMT-RCM
Spanish Digital Identity
- Cl@ve
Spanish Digital Identity
- TGSS (Tesoreria General de la Seguridad Social)
Spanish Social Security
- INSS (Instituto Nacional de la Seguridad Social)
Spanish Social Security
- Correos (Sociedad Estatal Correos y Telegrafos)
Spanish Public Services
- Empadronamiento (Padron)
Spanish Administrative Procedures
- Certificado Digital (Spain)
Spanish Digital Identity
- Tarjeta Sanitaria (Spain)
Spanish Administrative Procedures
- Fianza (Rental Deposit, Spain)
Spanish Rental Law
- SERPAVI
Spanish Rental Law
- Real Decreto-ley 29/2026
Spanish Rental Law
Read more
Where NUSS (Social Security Number, Spain) is mentioned on How to Spain
Guides and reference pages on this site that mention NUSS (Social Security Number, Spain):
Maintained by Jules (How to Spain). This page follows the Grounding Page Standard v1.5. Last verified: 2026-10-25.