Get an estimate of your tax liability and discover ways to optimize your tax situation
Monthly gross income
Number of dependent children you have
Note: This calculator uses the official 2025 (assessment year 2026) tax brackets from the Belgian tax authorities. The basic personal tax allowance is €10,900, with additional allowances for dependent children. The calculator includes the regular social security contribution (13.07%) and the special social contribution ("Cotisation sociale spéciale"). This is a simplified calculation and does not account for all deductions, special tax statuses, or other factors that might affect your actual tax liability.
Our calculator uses the latest Belgian tax brackets to give you an accurate estimate of your income tax.
See exactly how much tax you're paying in each tax bracket and understand your effective tax rate.
Visit our Tax Advice page to get help from experts who can help you reduce your tax burden.