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Contact
A new mailing address to contact the Urssaf on the social contribution of solidarity of businesses
Publié le 07 février 2024 - Directorate for Legal and Administrative Information (Prime Minister)
Are you liable for the businesses' Solidarity Social Contribution (C3S)? Do you have a question related to this one? The mailing address to contact the Urssaf on this matter has been changed.
C3S is a contribution due from companies with over €19 million in duty-free turnover. That was about 25,000 companies in 2023.
It contributes to the financing of old-age insurance.
Now, if you have a question about C3S, you should send it to the following address:
Urssaf C3S
TSA 62101
69833 Saint Priest cedex 9
Please note
For questions about the C3S, it is also possible to contact the Urssaf:
- by telephone at 0 806 804 260 ;
- by email via the dedicated Urssaf form.