Capital gains on property in Belgium: detailed calculation and taxation
Step-by-step calculation of property capital gains in Belgium. Cost price, revaluation, deductible costs, exemption cases, and 16.5% tax rate.
- 01 The formula
- 02 Calculation examples
- 03 Deductible costs
- 04 Key takeaways
The capital gain calculation formula
Taxable capital gain = Sale price - (Purchase price + 25% flat-rate acquisition costs + 5% per year of ownership + documented works).
If the result is positive and the sale occurs within 5 years, it is taxed at 16.5% plus municipal surcharges (total approximately 18-19%). After 5 years as an individual, the capital gain is completely tax-free.
Calculation examples
Sale within 3 years: Purchase 250,000 EUR, sale 310,000 EUR. Acquisition costs: 62,500 EUR (25%). Annual increase: 37,500 EUR (3 x 5% x 250,000). Capital gain: 310,000 - 250,000 - 62,500 - 37,500 = -40,000 EUR. Result negative: no tax.
Sale within 2 years: Purchase 200,000 EUR, sale 280,000 EUR. Acquisition costs: 50,000 EUR. Annual increase: 20,000 EUR. Capital gain: 280,000 - 200,000 - 50,000 - 20,000 = 10,000 EUR. Tax: 10,000 x 16.5% = 1,650 EUR + municipal surcharges.
Deductible costs
Documented renovation works reduce the taxable capital gain. Keep all invoices. The 25% flat-rate acquisition costs cover notary fees and registration duties without needing receipts. The 5% annual increase compensates for inflation.
Key takeaways
Hold for at least 5 years to avoid capital gains tax entirely. Document all works with invoices. The formula is generous — in many cases, even a sale within 5 years results in no tax. For a complete analysis, consult our rental taxation guide and a rental management software to track all expenses.
Frequently asked questions
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Capital gain = sale price - cost price. Cost price = purchase price + acquisition costs (25% flat rate or actual) + documented works + revaluation (5%/year). If the result is negative or zero, no taxation.
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Yes, 16.5% on the net capital gain (after deducting the cost price). This rate is increased by municipal surcharges (6-9% depending on the municipality), giving an effective rate of 17.5-18%.
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Yes. In a company, the capital gain is taxed at 25% (corporate tax) regardless of the holding period. There is no exemption after 5 years. The taxation can be spread if the proceeds are reinvested.