Definition
You land a project with a structured client: an agency, an IT services firm, a local authority.
The quote is signed, and the purchasing department sends one last sentence before opening your supplier account: please send us your attestation de vigilance (Urssaf compliance certificate).
You look for the word in the contract, it is not there. You dig through your registration paperwork, it is not there either.
The attestation de vigilance is a document issued on request by URSSAF, the body that collects social contributions, from your online account.
It certifies one single thing: on the day it is issued, your declarations are filed and your Social contributions are paid. It says nothing about your skills, nothing about your insurance, nothing about your tax position.
It carries a security code that lets your client check its authenticity on the Urssaf website, which is exactly what they will do.
Why your client insists on it
This is not a whim of the purchasing department.
French labour law makes the client jointly liable for the unpaid contributions of their contractors: above a contract value set by law, they must obtain the certificate when signing, then ask for it again at regular intervals for as long as the assignment lasts.
If they skip that step and the contractor turns out to be working undeclared, the administration can turn to them for the money. That is why the reminders arrive, and why they are automatic.
What Urssaf checks before issuing it
Take a simple case.
You are a freelance developer, in a non-regulated liberal activity attached to the general scheme, paying the full rate: you are past the first months covered by Acre (the start-up contribution relief), which would lower it.
In the first quarter of 2026 you collect 4,000 euros. You file your Turnover declaration on time. Your social contributions come to 25.6% in 2026, so 1,024 euros.
The CFP (contribution à la formation professionnelle, the vocational training contribution) adds 0.2% of revenue for a liberal profession in 2026, so 8 euros, provided you declared some revenue during the previous calendar year.
You therefore owe Urssaf 1,032 euros for that quarter alone: the headline rate never covers everything you pay them.
Careful not to borrow someone else's rate: 25.6% applies to non-regulated liberal professions under the general scheme in 2026, while an architect attached to the Cipav pension fund is at 23.2% that same year.
Until those 1,032 euros have actually reached Urssaf, your certificate stays out of reach. Filing is not enough: the money has to be paid.
A quarter with no income still has to be declared. This is the most common reason young businesses are refused: three months without an assignment, no declaration filed because there was nothing to declare, and the document becomes impossible to issue.
A declaration of 0 euros is still a declaration; without it your file is incomplete in Urssaf's eyes, however small the amount you did not collect.
The same logic applies to payment: an agreed and respected URSSAF payment plan keeps you eligible, whereas plain arrears close the door.
Vigilance, tax, Kbis: three different documents
Confusing them costs days of waiting, exactly when the client is losing patience. The attestation de vigilance comes from Urssaf and covers social contributions only.
The Tax compliance certificate comes from the tax administration and proves you are up to date with income tax and VAT: different body, different document, often required for public contracts.
A Kbis extract or an avis de situation SIRENE (business registration status notice) only prove that the business exists and is registered, never that it pays; a micro-entrepreneur in a liberal activity has no Kbis at all.
And none of the three protects against Reclassification as employment: a client who collects your certificates while setting your working hours remains exposed, and so do you.
Frequently asked questions
I have just registered my business, can I already get one?
Not straight away: as long as no filing deadline has passed, Urssaf has nothing to certify and the document is simply unavailable.
In the meantime, most clients accept your avis de situation SIRENE and your insurance certificate, then ask for the compliance certificate once your first declaration has been filed and paid.
Can my client refuse to pay me if I do not provide it?
Work that has been delivered is still owed, and a missing certificate does not cancel that.
In practice, many clients block the creation of your supplier account until the document arrives, and an invoice that never enters their accounting system never gets paid either.
Getting compliant is faster than arguing the point.
How long does it stay valid?
Its validity is limited and short: every certificate shows its issue date and the period it covers, and your client will ask for a fresh one during the assignment without you having to think about it.
Get into the habit of downloading it right after each contribution payment, rather than hunting for it the day the purchasing department asks.
Where exactly do I download it?
From your account on the Urssaf auto-entrepreneur portal, in the certificates section: the PDF is generated immediately, with no adviser and no letter involved.
If the download is refused, a declaration or a payment is missing, and the message on screen tells you which one. Situation up to date as of 5 September 2026.