DSN & URSSAF Relations: securing the critical flow of your payroll

Forget the days when companies had to send dozens of paper forms to different organisations. Today, everything goes through a single channel: the Déclaration Sociale Nominative (DSN).

While the DSN has simplified administrative procedures by replacing the former declarations, it has also automated compliance checks. Public authorities now cross-check data in real time, making any inconsistency immediately visible.

Secure my social declarations now

Why DSN compliance is critical (and risky)

The DSN is not simply an email that is sent.
It is a single digital file generated each month once payroll has been processed, transmitting all employee-related information (remuneration, social contributions, absences, contract terminations) to all social institutions: URSSAF, the Agirc-Arrco pension funds, Pôle Emploi (France Travail), the CPAM health insurance funds, provident organisations...

Risk of financial penalties

URSSAF imposes penalties for late submissions, omissions or inaccuracies in declarations. These penalties can accumulate quickly if errors are repeated month after month.

Impact on your employees

The DSN feeds into your employees’ social rights. An incorrect DSN can block healthcare reimbursements, affect the calculation of pension points, or delay unemployment benefits.

Trigger for audits

Recurring anomalies in your DSN submissions are warning signals that may trigger a comprehensive URSSAF audit.

The HReact approach: analyse, correct, submit

We do not simply press the “Send” button.
We carry out rigorous quality control of your reporting flows to ensure that everything submitted to the authorities is fully compliant.

1. Comprehensive data collection from the outset

The quality of a DSN depends on the quality of the incoming data.
From the moment an employee is hired, HReact ensures that all required information (identity details, Social Security number, contract elements) is collected and correctly formatted. We secure key variables to prevent rejections.

2. Managing URSSAF feedback reports (CRM)

This is where our expertise truly makes the difference.After each submission, the authorities send back Comptes Rendus Métier (CRM), technical feedback reports highlighting anomalies or inconsistencies. While many providers ignore these reports as long as the payment goes through, HReact analyses every CRM each month. This allows us to:

• Identify and correct errors progressively throughout the year rather than waiting for year-end adjustments.
• Correct identity data or contribution rates immediately.

3. Your administrative shield

We act as the direct point of contact with URSSAF and other institutions.
In the event of a request for clarification or a compliance adjustment, HReact manages all communications and provides the required supporting documentation. You do not need to decipher administrative language.

Monthly DSN vs Event-based DSN

Your obligations do not stop at the end of the month. The DSN system also requires rapid reporting when certain employee-related events occur.

Monthly DSN: Covers standard payroll reporting and social contributions.
Event-Based DSN: Must be submitted within five days following a specific event, such as sick leave (to trigger statutory daily allowances) or the termination of an employment contract (to generate the unemployment certificate).
HReact includes the management of these event-based declarations within your service package to ensure continuity of your employees’ social rights.

A clean DSN means a healthy company in the eyes of the French administration.
Secure your social declarations now.