French Labour Law

URSSAF Audits: A Practical Guide for Employers

DAIRIA Law · 2026-06-23 · 4 min

URSSAF Audits: A Practical Guide for Employers

The URSSAF audit is a crucial step for employers, ensuring your company’s compliance with social security contributions. Understanding the audit process, evaluation methods, and potential recourse is essential for anticipating and effectively managing this obligation. Here’s how it works, from the initiation to contestation.

What is the URSSAF Audit?

The purpose of the URSSAF audit is to verify all contributions owed by companies. It aims to ensure the correct application of social legislation by checking the bases and rates applied for different contributions (social security, retirement, unemployment, etc.). Companies of all legal forms may be subject to this audit, with the exception of central state administrations.

Process of a URSSAF Audit

1. Audit Notification

Before commencing any verification, URSSAF must send you an audit notification, pursuant to Article R.243-59 of the French Social Security Code. This notification must specify the start date of the audit, the points of verification, and the period concerned.

2. The Audit Period and Prescription

The audit period is generally 3 years, but it can be modified in case of identified irregularities. After this timeframe, URSSAF is no longer entitled to claim prior contributions. It is crucial to ensure that the period indicated in the audit notification complies with this legal framework.

3. The Verification

URSSAF may carry out different types of verifications:

  • Real verification: based on accounting documents and contribution statements.
  • Sampling-extrapolation: a method used to generalize conclusions from a sample of checks.
  • Flat-rate taxation: if the submitted documents are insufficient or questionable, URSSAF may estimate the contribution amounts based on a flat-rate reference.

4. Letter of Observations

Following the verifications, URSSAF sends you a letter of observations. This document explains the non-compliance points identified and provides you with the opportunity to respond before finalizing the audit results. You have a deadline to submit your responses.

Key Points to Watch During an Audit

1. The Contradictory Period

During this phase, your company can challenge URSSAF’s observations. It is essential to prepare your defense with solid documentation. Neglecting this step can lead to automatic reassessments.

2. Formal Notice and Enforcement

If URSSAF maintains its positions after the contradictory period, it may issue a formal notice. If this notice goes unanswered, enforcement measures could be employed to compel collection. This highlights the importance of meeting deadlines and responding proactively.

3. Contestation and Recourse

If you disagree with URSSAF’s conclusions, several recourse options are available to you, such as appealing to the judicial tribunal (social jurisdiction). You may also consider negotiation or settlement to reduce financial consequences.

Increases and Penalties

In the event of a reassessment, URSSAF may impose increases and penalties, particularly in cases of bad faith or failure to report undeclared work. These costs can significantly increase the total amount of contributions owed.

It is therefore imperative that you keep your documentation up to date and train your personnel on compliance with social legislation. Rigorous monitoring can help avoid complications later on.

Frequently Asked Questions

Which companies are likely to be audited by URSSAF?

All companies, legal entities, may be audited, with the exception of central state administrations.

What is a letter of observations?

This is a document sent by URSSAF after an audit, listing potential irregularities. The company has the opportunity to respond to it.

What are the deadlines for contesting observations?

You generally have a deadline of 30 days to respond to the letter of observations.

What to do in the event of a formal notice?

Respond promptly and formally to URSSAF. You can contest the formal notice and consider recourse or settlement.

What recourse options are available in the event of disagreement with URSSAF?

You may file an appeal with the judicial tribunal or proceed through a negotiation process for a settlement.

Conclusion

Anticipating a URSSAF audit allows you to better manage it. Ensuring the compliance of your contributions and understanding the procedures can prevent significant financial consequences. Do not hesitate to consult experts to strengthen your defense during these procedures. DAIRIA Law is at your service to assist you in managing these crucial issues.

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