French Labour Law

URSSAF Audits in France: What Risks Do Employers Face?

DAIRIA Law · 2026-08-11 · 5 min

URSSAF Audits in France: What Risks Do Employers Face?

Companies operating in France are subject to URSSAF audits, whose consequences can be significant, both financially and in terms of reputation. (URSSAF is the French body that collects social security and family benefit contributions.) Understanding the risks associated with these audits is essential in order to anticipate and better manage them.

Understanding How a URSSAF Audit Unfolds

A URSSAF audit generally begins with the issuance of a notice of audit (avis de contrôle), a mandatory notification specifying the date and the nature of the upcoming verifications. This notice must be sent at least seven days before the start of the audit for small and medium-sized enterprises, and fifteen days for large companies. URSSAF is entitled to verify the compliance of your declarations and payments across many areas, in particular social security contributions, vocational training contributions and supplementary pension schemes.

Main risks:

  • Financial reassessment (redressement): If irregularities are found, this can lead to a reassessment of the contributions due.
  • Penalties and surcharges: In the event of non-payment or under-declaration, surcharges may be applied, worsening your company’s financial position.
  • Reputational impact: Compliance issues may also tarnish your company’s image in the eyes of your clients and partners.

Assessment of Contribution Bases and Extrapolation Methods

During an audit, URSSAF has several methods at its disposal to determine the basis of the contributions.

  1. Full verification: This involves examining accounting records, payslips and other supporting documents. It is the most precise and direct method, but also the most time-consuming.

  2. Sampling and extrapolation: Where large volumes of data are involved, URSSAF may choose to proceed by sampling. This means that a subset of the data is examined, and the results are extrapolated to all declarations. Although faster, this method carries a risk, since the conclusions apply to all the employees or periods under review.

  3. Flat-rate assessment (taxation forfaitaire): If URSSAF is unable to establish a precise figure, it may impose a flat-rate assessment based on an estimate. This method is frequently contested by companies, as it can considerably increase the amounts due.

  • Article L.243-7 of the French Social Security Code, which sets out the framework for the verification of contributions.

The Stages of the Adversarial Period

Once URSSAF has completed its audit, it sends a letter of observations (lettre d’observations) summarising its conclusions. You then have a period, generally of thirty days, in which to respond to and challenge these observations. This phase is crucial to your company’s defence.

  • Adversarial period: It is essential to respond in a detailed and structured manner to each point raised by URSSAF, providing arguments and documents demonstrating your compliance. Ignoring this stage may amount to tacit acceptance of URSSAF’s findings.

  • Formal notice and enforcement order: If no amicable solution is reached, URSSAF may issue a formal notice (mise en demeure) requiring payment of the reassessed contributions, potentially followed by an enforcement order (contrainte) if the amount is not paid within the allotted time.

URSSAF Litigation: From Filing to the Court

In the event of persistent disagreement, you can challenge the reassessment before the tribunal judiciaire, generally in its social division (pôle social). It is advisable to be represented by a lawyer specialising in social security law to strengthen your position.

  • Surcharges and penalties: An uncontested reassessment may give rise to financial penalties. It is therefore crucial to carefully review the disputed amounts and to prepare a solid defence.
  • Limitation period: Bear in mind that URSSAF has a fixed time limit in which to carry out its audits, generally three years. After this period, a reassessment is no longer possible.

Negotiation and Settlement: An Alternative Route

It is often possible to reach an amicable agreement with URSSAF through negotiation. This may involve an out-of-court settlement (transaction), making it possible to reduce the amount of contributions payable or to spread out the payments. This option is particularly attractive, as it allows you to avoid lengthy and costly litigation.

Frequently Asked Questions

What is a URSSAF audit?

A URSSAF audit is a verification carried out by the body to ensure that contributors comply with their obligations regarding social security contributions and declarations.

What are the limitation periods for a URSSAF audit?

The limitation period for URSSAF audits is generally three years from the date on which the contributions became due.

What should I do if I receive a notice of audit?

It is important to take this notice seriously and to prepare your accounting records. You may also contact a specialised lawyer to assist you throughout the process.

What risks does my company face in the event of a reassessment?

In the event of a reassessment, your company may face increased amounts due, penalties, as well as repercussions for its image.

How can I challenge a URSSAF decision?

You can challenge a decision by submitting a reasoned response to URSSAF during the adversarial period, and if necessary, by bringing an appeal before the competent court.

Conclusion

Proactive work and preparation for a URSSAF audit are essential to minimise the risks. By regularly reviewing your compliance and maintaining transparent relations with URSSAF, you can not only avoid complications but also protect your company over the long term. DAIRIA Avocats is at your disposal to assist you and secure your commitments towards URSSAF.

📌 This article is part of the complete guide URSSAF Audits: The Employer’s Guide.

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