State of the Union / Calculator
How much tax do I pay?
Enter your gross salary. You will see how much goes to social security and to taxes, how much you take home, and where that money goes. An approximation for white-collar employees, based on the official rates for income year 2026.
You pay … of your gross salary in social contributions and taxes.
Your payslip shows a different amount each month. Your employer withholds advance tax (bedrijfsvoorheffing): a prepayment on your tax that is settled with your tax assessment. This calculator shows the final settlement for the whole year.
How it is calculated
Tax per bracket
Your taxable income is split into brackets. Each bracket has its own rate: only the part above a threshold is taxed at the higher rate.
Where does your contribution go?
If your total contribution were divided like all Belgian government spending in … (Eurostat). This is an illustration: in reality your social security contribution goes to social security, and money from all sources is pooled.
What is not included?
This calculator is an approximation. Your actual payslip and tax assessment may differ, among other things because of:
- The work bonus for low wages (a reduction of your social security contribution and your tax)
- The final settlement of the special social security contribution: this shows the amount withheld from your pay, for a single person
- Your employer's contributions on top of your gross salary
- Tax benefits such as pension savings, service vouchers, childcare, donations and a housing bonus
- A partner's tax situation (in a joint tax return)
- Meal vouchers, a company car and other fringe benefits
- Blue-collar workers: their holiday pay and social security contributions are calculated differently; this version calculates for white-collar employees
Sources of all amounts
- RSZ, administratieve instructies DmfA (inhouding van 13,07%, ook op het dubbel vakantiegeld)
- Securex, Hoe wordt het vakantiegeld van de bedienden berekend? (sociaal secretariaat; officiële wettekst nog te koppelen)
- FOD Financiën, Beroepsinkomen (forfaitaire kosten werknemers, inkomstenjaar 2026)
- FOD Financiën, Belastingtarieven (inkomstenjaar 2026)
- FOD Financiën, Belastingtarieven (belastingvrije som, inkomstenjaar 2026)
- FOD Financiën, Kinderen ten laste (verhoging van de belastingvrije som, inkomstenjaar 2026)
- RSZ, administratieve instructies DmfA, Bijzondere bijdrage sociale zekerheid (schaal vanaf 1 april 2022, individuele aanslag)
- FOD Financiën, Gemeentebelasting
For an official calculation: the Tax-Calc simulator of the FPS Finance.