You inherit an apartment, you are moving, or you are hesitating about what to do with your current property. The question keeps coming back: is it better to sell and recover a lump sum, or to rent it out and receive a regular income? There is no universal answer, but there is a method. Here are the right parameters, figures based and specific to the 2026 Brussels context, to help you decide with full knowledge of the facts.
Selling: what you get back, and what the taxman takes
Selling turns your property into capital available immediately. The major tax advantage in Belgium is powerful: the capital gain realised on your main home is entirely exempt from tax. Specifically, if the property has been your uninterrupted family home for at least the 12 months preceding the month of sale, you pay no tax on the gain, whatever its size. It is one of the broadest exemptions in the Belgian system, provided for under article 93bis of the Income Tax Code.
The situation differs if the property is not your main home. For a built property resold within five years of its acquisition, the capital gain is taxed at 16.5%, plus municipal surcharges. The period is calculated from notarial deed date to notarial deed date, as notaire.be specifies. Beyond five years, the capital gain becomes exempt again. A property received through inheritance escapes this taxation; a property received as a gift, on the other hand, can be taxed if resold within three years of the gift and within five years of the original acquisition by the donor.
Key takeaway: if you sell the home you have always lived in, the full proceeds of the sale come back to you, with no tax on the capital gain. This is a strong argument in favour of selling, especially if you have an immediate use for that capital.
Renting: the yield, but also the taxation and the constraints
Renting means keeping the property and aiming for a regular income, plus an asset that can keep gaining value. In this respect, Brussels is a tight and buoyant market. According to Federia’s rental barometer, which analyses more than 70,000 leases, the average rent for a Brussels apartment exceeded 1,200 euros per month in 2024, with Brussels remaining the Region with the highest rents in the country. Woluwe-Saint-Pierre ranks among the most expensive municipalities in the Region, while Evere and Schaerbeek offer more accessible entry points, which changes the picture for a yield calculation.
But be careful not to reason on gross rent alone. Three elements must enter your calculation.
The first is tax related. In Belgium, when you rent a home to an individual who uses it as their residence, you are not taxed on the rent actually received, but on the indexed cadastral income increased by 40%. A figures based example, taken from Wikifin, illustrates this: for a property with a non indexed cadastral income of 1,000 euros, the taxable base for 2026 income amounts to 1,000 x 2.3 (indexation coefficient) x 1.4, meaning 3,220 euros, which can represent tax of around 1,610 euros in the 50% marginal bracket. On top of this comes the annual property tax (precompte immobilier), also calculated on the cadastral income. Relatively good news for the landlord: the taxable base remains the cadastral income, not your actual rent, which is often advantageous when the market rent is high.
The second element is regulatory. A property put up for rent in Brussels does not escape the EPB obligation: by 1 January 2033 at the latest, every home will have to meet the 275 kWh/m²/year threshold, on pain of administrative fines. If your property is rated F or G, renting it out simply postpones inevitable works, and rent indexation itself can be restricted for energy intensive homes. A poor EPB rating therefore weighs as much on a rental project as on a sale.
The third element is human and practical. Renting means managing: finding a tenant, inventories of fixtures, maintenance, possible rental vacancy, possible unpaid rent. Entrusting management to an agency has a cost, which reduces net yield. These are entirely manageable constraints, but they must be factored into the decision, not discovered afterwards.
A figures based example to set the scene
Take a Brussels apartment acquired with no intention of living in it, with a market value of around 250,000 euros, rented for 1,100 euros per month. The gross annual rent reaches 13,200 euros, giving a gross rental yield of around 5.3%. This is a decent level for a major city, higher than many risk free investments.
But the net yield is noticeably lower once you account for the property tax, the tax based on the increased indexed cadastral income, any management fees, maintenance and a provision for rental vacancy. Depending on the case, the actual net yield is often around 3 to 4%. This should be weighed against selling, which would immediately give you a capital of 250,000 euros, available and, if it were your main home, free of capital gains tax. These figures are illustrative and depend on each property: the point is mainly to compare the two logics, immediate capital versus income spread over time.
Five questions to help you decide
Do you need the capital now? If so (a new purchase, a repayment, a life project), selling is often the obvious choice, all the more so if the capital gains exemption applies.
What is the EPB rating of the property? If it is rated F or G, you will have to renovate before 2033 under both scenarios. The question then becomes: would you rather sell while factoring in the discount, or renovate and then rent out?
What is your tolerance for management? Renting requires either time or management fees. If you have neither, your net yield shrinks.
What is your time horizon? Keeping a property to rent makes most sense over the long term, giving time for the asset to gain value and for any loan to be repaid. For a short term need, selling is more consistent.
Is the property your main home or not? This single answer changes the entire tax treatment of the sale, total exemption on one side, possible taxation at 16.5% before five years on the other.
The starting point: knowing the value of your property
None of these questions can be settled in a vacuum. To compare sale proceeds with rental income, you first need a reliable, local valuation of your property, since it is this figure that determines both a realistic selling price and the rental yield you can expect. A rent of 1,100 euros does not mean the same thing on a property worth 220,000 euros or 320,000 euros.
Frequently asked questions
Am I taxed on the capital gain if I sell my property in Brussels?
Not if it is your main home: the capital gain is entirely exempt, provided you have lived there without interruption for at least the 12 months preceding the month of sale. For a property that is not your main home, the capital gain is taxed at 16.5% (plus surcharges) if you resell within five years of purchase, and exempt beyond that.
How is my rental income taxed in Belgium?
If you rent to an individual who uses the property as their home, you are taxed not on the rent received, but on the indexed cadastral income increased by 40%, added to your other income at the marginal rate. On top of this comes the annual property tax. The tax treatment differs if the tenant uses the property for professional purposes or if the property is furnished.
Is a poor EPB rating a problem for renting out my property?
Yes, just as much as for selling. The Brussels obligation requires a maximum of 275 kWh/m²/year by 2033, with fines attached, and rent indexation can be restricted for energy intensive homes. A property rated F or G will therefore need to be renovated in any case, which should factor into your choice between selling and renting.
Sell or rent: the right decision first depends on one figure, the real value of your property today. Our IPI licensed agents, present in Woluwe-Saint-Lambert, Woluwe-Saint-Pierre, Schaerbeek and Evere, value your house or apartment and help you concretely compare the two scenarios. Request your free valuation: it is the starting point for any informed decision.
Sources: notaire.be (capital gains taxation), Wikifin (property income taxation), Federia rental barometer, Bruxelles Environnement (EPB targets), Expertissimmo internal data. Data current as of June 2026.
