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Belgium Tax Calculator (2026)

Estimate your Belgian corporate tax liability — enter your taxable income and see the breakdown by standard rate (25%) and SME reduced rate (20%). For a precise calculation, contact our tax team.

Use this calculator to estimate your company's Belgian corporate tax. As part of our accounting services in Belgium, we provide detailed tax calculations including all available deductions and incentives. This tool gives a quick estimate based on the 2026 Belgian corporate tax rates.

Corporate Tax Calculator

Enter your estimated annual taxable income after accounting adjustments
SME: small company, min. €45,000 director salary, no 50%+ parent company. See full criteria
Total voorafbetalingen/versements anticipés already paid this year

Tax Estimate (2026)

Taxable income
Tax at 25%
Total corporate tax
Effective tax rate
Less: advance payments
Balance due / (refund)

Disclaimer: This calculator provides an indicative estimate only. It does not account for specific deductions (innovation income, notional interest, investment deduction, carried-forward losses), disallowed expenses, or withholding tax credits. For an accurate tax calculation tailored to your situation, consult our tax advisory team.

How Belgian Corporate Tax Is Calculated

StepDescription
1. Accounting profitNet profit from approved annual accounts
2. + Disallowed expensesAdd back non-deductible costs (fines, excess car costs, entertainment)
3. - DeductionsInnovation income, notional interest, investment deduction, loss carry-forward
4. = Taxable incomeBase for tax rate application
5. Apply tax rateSME: 20% on first €100K + 25% on rest. Standard: 25% on all
6. - Tax creditsR&D credit, foreign tax credits, withholding tax offset
7. - Advance paymentsQuarterly voorafbetalingen already paid
8. = Balance dueFinal payment to SPF Finances (or refund if overpaid)

For details on each tax rate and deduction, see our corporate tax rate guide. For tax return filing, our team handles the complete process.

Thomas Claes — Senior Legal Advisor at LawSupport

Thomas Claes

Senior Legal Advisor — Tax & Accounting

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Frequently Asked Questions

Belgian corporate tax is calculated on taxable income (accounting profit adjusted for disallowed expenses and deductions). The standard rate is 25%. Qualifying SMEs pay 20% on the first €100,000 and 25% on the rest. Various deductions (innovation income, notional interest, investment) can further reduce the effective rate.
An SME qualifying for the reduced rate pays 20% on the first €100,000 of taxable income and 25% above that. For a company with €200,000 taxable income: (€100,000 × 20%) + (€100,000 × 25%) = €45,000, giving an effective rate of 22.5%. Additional deductions can lower this further.
This calculator provides an estimate based on standard corporate tax rates. It does not account for specific deductions (innovation income, notional interest, carried-forward losses), disallowed expenses, or withholding tax credits. For a precise calculation, consult our tax advisory team.
The calculator does not include: innovation income deduction (up to 85%), notional interest deduction, investment deduction, R&D tax credit, carried-forward losses, or dividends received deduction. These can significantly reduce your effective tax rate and require individual assessment.

Get a Precise Tax Calculation

Our tax advisory team provides detailed calculations including all deductions, incentives, and treaty benefits.

Get Tax Advisory →