💰 Topic
Taxes in Belgium
Understand what you owe the tax authorities, and estimate it in seconds. This section gathers the Belgian tax calculators, starting with personal income tax, based on the official 2026 scales.
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Personal income tax (PIT)
Estimate your Belgian personal income tax from your taxable income.
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Understand my tax return
Salary, dependants, pension savings... find the right section of your tax return.
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Pension savings (tax relief)
The real tax reduction based on what you paid in, and the 2nd cap trap to avoid.
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Actual expenses or flat rate
Compare without recommendation the statutory flat rate and your actual expenses.
Understanding Belgian tax
The Belgian system is progressive: the higher the income, the larger the share taxed at the top rate. That is why your average rate always stays below your marginal rate (the highest bracket, up to 50%).
What drives the bill
Three elements determine the final tax: the bracket scale, the tax-free allowance (a share of income that is not taxed) and the municipal surcharges specific to your municipality.
More tax tools to come
This section will grow: property tax, inheritance and gift duties, tax benefits… All topics where a clear estimate is worth gold before filling in a tax return.
Frequently asked questions
How does personal income tax work?
It is progressive: your taxable income is taxed in brackets (from 25% to 50%), after a tax-free allowance, then increased by municipal surcharges. The tax calculator estimates it from your taxable income.
What is taxable income?
The net income subject to tax, after deducting social contributions and professional expenses.
What are municipal surcharges?
A percentage each municipality adds to the federal tax (often 6 to 9%), which makes the final tax vary from one municipality to another.
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