Free Tool

Social Contributions Calculator

Estimate your quarterly social contributions as a Belgian self-employed person based on your net professional income. 2025 rates, main and secondary occupation.

Revenue minus business expenses, before social contributions and taxes

Affects the minimum quarterly contribution

Invoicing automation for freelancers?

I build automated invoicing flows via Shopify and Billit — VAT-correct, with quarterly overviews and accountant export.

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