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How much will you pay to social security this quarter?

For self-employed workers, under the regime in force since 2019: the base is the quarter’s monthly average — no brackets — with the 21.4% rate and the start-of-activity and multi-activity exemptions.

Services provided in the quarter (€)

Counts 70% towards the relevant income.

Sales, production, restaurants or hospitality in the quarter (€)

Counts 20% towards the relevant income.

I started my activity less than 12 months agoThe first 12 months are exempt from contributions.I also work as an employee (category A)With a monthly base below 4× the IAS (social support index), the multi-activity exemption applies.

Voluntary adjustment of the base (optional — not applied by default)

You can adjust the base up or down by up to 25%, in 5% steps — it is your choice in the quarterly statement.