Yes. Selling your main residence in Belgium is exempt from the 16.5% property capital-gains tax, provided the home was your principal residence for at least 12 months during the 18 months before the sale. There is no limit on the gain (Housing-Service, 2026).
The main-residence exemption is the most protective rule Belgian homeowners have. When you sell the home you actually live in, the gain escapes the 16.5% speculative tax entirely, no matter how much the property has appreciated or how quickly you sell (Housing-Service, 2026). This is why a family that bought during a market dip and sells a few years later can pocket the whole surplus, tax free.
The condition to watch is occupation. The property must have been your principal residence, the address where you are officially domiciled, for a continuous period of at least 12 months during the 18 months preceding the month of sale (Housing-Service, 2026). That 18-month window deliberately leaves room: it lets you move out and put the home on the market without immediately losing the exemption, because the law does not expect you to still be living there on the day you sign. A short bridging gap while your new home is prepared is normally fine.
The counter-intuitive risk is a long absence. If you leave the property vacant or let it out for an extended period before selling, you can drift outside the 18-month window and lose the shelter, exposing the gain to 16.5% if the sale also falls within five years of purchase (Housing-Service, 2026). Timing the sale relative to when you actually lived there is therefore what matters, not simply owning the home.
For couples and co-owners, each owner is assessed on their own occupation and share. And remember the boundary with other rules: this exemption is about your own home. A pure investment property does not qualify, inherited property has its own separate exemption, and a gift does not inherit this protection. When in doubt, the domicile records and the 12-in-18 test decide the outcome.
At a glance
- Main residence sales are exempt from the 16.5% capital-gains tax (Housing-Service, 2026).
- Condition: principal residence for at least 12 months within the 18 months before sale.
- The 18-month window allows a moving-out gap before completion.
- No cap on the exempt gain, however large the profit.
- Long vacancy or letting before sale can break the exemption.
- Each co-owner is assessed on their own occupation and ownership share.
- Investment property does not qualify; inheritance has its own separate exemption.