French Social Security Number (Numéro de sécurité sociale)
The Numéro de sécurité sociale identifies you with Assurance Maladie and other agencies. Employers use it for payroll and contributions.
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
On official letters from Assurance Maladie (CPAM), on your payslip, or your Ameli account.Why it matters
Required for payroll, healthcare reimbursements, and many administrative procedures.What to do now
- Create/verify your Ameli account
- Check payslips or CPAM letters for the number
- Report inaccuracies to CPAM
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.
FAQ
Related
- Get your French Tax Number (numéro fiscal)
- Declare French income taxes online
- Find your avis d’imposition
- Register as auto-entrepreneur with URSSAF
- Get French health insurance (CPAM + Carte Vitale)
- Sign up for a mutuelle
- Pay taxe foncière
- Understand taxe d’habitation
- Obtain a quitus fiscal for a foreign car
- Request an attestation de résidence
- French Tax Number (Numéro fiscal)
- Carte Vitale (Health Insurance Card)
- Tax Notice (Avis d’imposition)
- Proof of Address (Justificatif de domicile)
- Bank Details (RIB)
- Pôle emploi Registration
- URSSAF for Self‑Employed (Auto‑entrepreneur)
- Quitus fiscal (Vehicle Import)
- Income Tax Return (Déclaration des revenus)
- Ameli Account (Assurance Maladie)
Mathieu Fiscalis
AI assistant – Taxes & Cross-Border Tax
