Yes, but only in limited cases. A built property resold within 5 years of purchase is taxed at 16.5% on the gain, and building land is taxed at 33% within 5 years then 16.5% up to 8 years. Your main residence and any inherited property are exempt (Notaire.be, 2026).
Belgium has no general capital-gains tax on private property, which surprises many international buyers. The tax only bites in specific speculative situations defined federally, so most owners who sell a family home never encounter it (Notaire.be, 2026).
For a built property, the rule is the 5-year window. Sell within five years of your acquisition and the gain is taxed at 16.5%; sell after five years and, as private wealth management, the gain is not taxed at all (Housing-Service, 2026). Building land is treated more strictly: 33% if resold within five years and 16.5% between five and eight years, reflecting the historic concern about land speculation (Notaire.be, 2026).
The gain itself is not simply resale price minus purchase price. You may increase your acquisition cost by a flat 25%, or by the actual registration duties and notary fees, plus 5% for each full year you held the property, and you can add documented renovation works by registered contractors. On the sale side you deduct selling costs such as the agency commission and the mandatory certificates (Notaire.be, 2026). These adjustments often shrink or erase the taxable gain.
Two big exemptions carry most sellers out of scope. Your main residence is fully exempt when you have lived there as your principal residence for at least 12 months in the 18 months before the sale (Housing-Service, 2026). Property you received by inheritance is also fully exempt, regardless of when the deceased bought it (Notaire.be, 2026). The important nuance is the gift: donated property does not enjoy the inheritance exemption, and if the recipient resells within three years the 16.5% tax can apply, with the holding period counted from the donor’s original purchase. Companies follow a completely different regime, taxed on gains as professional income.
At a glance
| Situation | Tax on the gain |
|---|---|
| Built property sold within 5 years | 16.5% (Notaire.be, 2026) |
| Built property sold after 5 years | Not taxed |
| Building land within 5 years | 33% (Notaire.be, 2026) |
| Building land 5 to 8 years | 16.5% |
| Main residence (12 months in last 18) | Exempt (Housing-Service, 2026) |
| Inherited property | Exempt (Notaire.be, 2026) |
| Gift resold within 3 years | Can be taxed, clock from donor’s purchase |