What data is transmitted to CCSS or CNS?

When SECUline is active on your Salary.lu account, we automatically transmit payroll data to the CCSS (Centre Commun de la Sécurité Sociale) through the monthly salary declaration process known as DECSAL.

The data transmitted to the CCSS includes only the information that appears on your employees' payslips:

Gross wages paid to each employee
Exact number of paid working hours
Employee identification details
Other wage elements as shown on the payslip

We only transmit payslip data to the CCSS. We do not send any data directly to the CNS or other government institutions.

The CCSS acts as the central hub for all social security data in Luxembourg. They manage data collection and processing on behalf of various institutions including the CNS, pension funds, and accident insurance.

Updated on: 18/11/2025

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