How much can a landlord raise rent in Belgium? The short answer: ~2.5% (Santé Index (health index)), with 90 days notice required. Here's the full breakdown of Belgium's rent increase rules for 2026.
Get RentFlow — free Get it on Google Play| Maximum rent increase | ~2.5% (Santé Index (health index)) |
| Benchmark / index | Santé Index (health index) |
| Notice required | 90 days |
| How often increases are allowed | Once every 12 months |
| Rent control | Yes |
ℹ️ Values are approximate and index rates change frequently. Always verify the current figure with the official source before applying an increase. (Data: 2026-Q3.)
Annual rent indexation linked to health index (santé index). Brussels: Energy efficient homes exempt from rent indexation cap. Applies to main residence rental contracts.
Loi du 20 février 1991 (modified by regional legislation)
Regional variations: Wallonia and Brussels have additional rules. Health index value changes monthly — check statbel.fgov.be.
📑 Official index source: Santé Index (health index)
In Belgium, the rent increase limit is: ~2.5% (Santé Index (health index)). Annual rent indexation linked to health index (santé index). Brussels: Energy efficient homes exempt from rent indexation cap. Applies to main residence rental contracts.
Belgium requires 90 days written notice before a rent increase takes effect. Increases are generally allowed once every 12 months.
Yes — Belgium has rent control measures. Regional variations: Wallonia and Brussels have additional rules. Health index value changes monthly — check statbel.fgov.be.
RentFlow tracks rent, tenants and leases — and flags when an increase exceeds Belgium's legal limit or notice rules. Free to start.
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