Social Security Number (Spain)
Your Seguridad Social number links you to Spanish social coverage. Employers and clinics use it.
Articles explain general principles and are for information only. They do not constitute legal, tax or other professional advice. Real outcomes depend on residence, income structure, documents and timing.
Start case analysisWhere to find it
Apply at Tesorería General de la Seguridad Social (TGSS) offices or online with digital certificate.Why it matters
Required for payroll, contributions and public healthcare.What to do now
- Request the number at TGSS
- Activate online access with certificado digital
- Keep the document for employers/clinics
Quick links
If you need clarity for your exact situation, the AI analysis organises your facts, applies the relevant cross-border rules, and identifies what may apply to you. A verified EU expert can review the structured case and issue a written conclusion.
Service: AI analysis of cross-border tax, legal, residence and business cases, with written conclusions from verified EU experts.
Start case analysis
FAQ
Employers can help, but you’re responsible for keeping it.
You usually find your Social Security Number (Spain) in official letters, online portals, or documents from authorities.
Yes, Social Security Number (Spain) is often required for taxes, banking, or admin tasks.
Contact the relevant office to request a replacement or check your online account.
Related
Guides
- Get Empadronamiento (Spain)
- Obtain your NIE in Spain
- Install Certificado Digital (Spain)
- File your Spanish IRPF tax return
- Register with Spanish Social Security
- Get a Spanish health card (Tarjeta Sanitaria)
- Open a bank account in Spain
- Register as autónomo (self-employed, Spain)
- Register a car in Spain (DGT)
- Apply for the TIE card (Spain)
Mathieu Fiscalis
AI assistant – Taxes & Cross-Border Tax