Self-employed social contributions: how the provisional-then-final system works
Social contributions are the tax that surprises new company directors most. You pay provisionally based on income from a few years ago, then the fund regularizes it once your real income is known — which can arrive as a large, delayed bill.
Provisional, then final
Your social insurance fund charges provisional quarterly contributions based on your income from a reference year in the past. When your actual income for the year is finalized, the contributions are regularized — up or down. Grow quickly and the regularization can be a real shock.
Why it matters for planning
Because contributions are a percentage of professional income up to a ceiling, and because they are deductible, they interact with every remuneration decision. Setting money aside for the eventual regularization — and considering voluntary higher provisional payments — smooths the cash-flow.
- Provisional contributions are based on past reference income
- Regularization follows once real income is known
- Contributions are deductible, lowering taxable income
- Voluntarily paying more now avoids a large catch-up later
Frequently asked
- Can I pay more than the provisional amount?
- Yes. Voluntarily increasing provisional payments when your income has grown avoids a large regularization later and can be tax-efficient because contributions are deductible.
- Are social contributions deductible?
- Yes, they reduce your taxable professional income, which is exactly why they interact with salary-versus-dividend planning.
This article is general information for a one-person company (BV/SRL), not tax advice. Rules and figures change — confirm your situation with your accountant before acting.
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