Who writes to you, and what they want.

Regional health authority. Handles registrations of medical professionals, complaints about care, public health matters.

Mandatory complementary pension for private-sector employees. Separate from CNAV.

Online portal for residence permits since 2024. Most students, salariés, passeport talent applications now go through ANEF.

Issues passport, CNI, permis de conduire, carte grise. Process through ANTS website + mairie or préfecture for biometrics.

Health insurance for residents. Reimburses doctor visits, prescriptions, runs the carte vitale. CPAM = local branch, Ameli = the brand.

Public pension scheme (régime général). Builds your relevé de carrière from URSSAF declarations. You'll meet them seriously around age 60.

Pays family benefits and housing aid (APL/ALS). They run on documents — every life event needs a paper trail. Late replies cost you money.

Retirement caisse for many professions libérales (architects, consultants, etc.). Handles their cotisations and pension rights.

Student services: bourses, logement étudiant, restaurants universitaires. CVEC payment processing.

Unemployment benefits (ARE) and jobseeker registration. Renamed from Pôle emploi in 2024 — both names still appear on letters.

Private bailiffs who deliver legal documents and execute judgments (saisies, expulsions). Letters from them are formal — every day matters.

Marriage, PACS, birth registration, school enrollment, local services. Always your commune of residence — varies enormously by city.

Sécu + family + retirement combined, but only for the agricultural sector. If your job has anything to do with farming or food production, you're MSA not URSSAF.

Validates VLS-TS visas after arrival, runs the Contrat d'Intégration Républicaine (CIR), medical visits for new arrivals.

Issues residence permits (titres de séjour) and handles many civic procedures. Most titre work moved online to ANEF in 2024 — paper only for specific cases.

Business taxation: TVA, IS, CFE, CVAE. If you're auto-entrepreneur, this is who you talk to about TVA once you cross the threshold.

Personal income tax, taxe d'habitation, taxe foncière. The DGFiP is national; your SIP is the local branch handling your file.

Civil and minor criminal cases. Letters from a tribunal mean a real legal process — not something to handle alone.

Collects social contributions (cotisations) from employers, self-employed, and auto-entrepreneurs. Errors compound — fix early.