Rent indexation in the Brussels-Capital Region
The tool is set to Brussels: enter the base rent, the signing and start months, the year of indexation and the EPB label.
In the Brussels-Capital Region a landlord may index the rent once a year, from the anniversary of the date the lease took effect, by sending a written request; the request reaches back at most three months before the month in which it is sent. Two conditions come first: the lease must be registered, and the tenant must have received a valid energy performance certificate (certificat PEB, EPB-certificaat). Without them, no indexation at all is possible. The formula is base rent × new health index / starting index, where the starting index is the month before the lease was signed and the new index the month before the anniversary; the latest published value is 140.67 for September 2026. On top of that, a home rated E, F or G whose lease took effect before 14 October 2022 must have the result multiplied by a correction factor, permanently, until a better certificate is obtained or a new lease starts. Homes let by public housing companies (SISP) and the Fonds du Logement are outside the correction.
Indexed rent (Brussels-Capital)
€1,066.77
from June 2026 · +25.50% on the base rent
€850.00
| Starting index | 110.93 · April 2021 |
| New index | 139.22 · May 2026 |
| Fully indexed rent | €1,066.77 |
| Rent that can be charged | €1,066.77 |
Assumptions
Statbel health index, base 2013. Indexation must be requested in writing and can go back three months at most; in Flanders a late request uses the index at the time of the request. Method and sources
Checked by Radif Partners · Editorial policy · Method and sources
Example: the same flat with three EPB labels
This follows the official Brussels example, updated to February 2026: lease signed and in force on 1 February 2020, base rent €1,000, starting index January 2020 (109.72), new index January 2026 (137.37). The correction uses the January 2022 (118.21) and January 2023 (128.00) indices.
| EPB label | Correction factor | Rent from February 2026 |
|---|---|---|
| A to D | none | €1,252.01 |
| E | 0.961758 | €1,204.13 |
| F or G | 0.923516 | €1,156.25 |
For anniversaries between 14 October and 31 December, the two indices are those of 2021 and 2022 rather than 2022 and 2023. The rules and the full factor table are on be.brussels, rent indexation with a correction factor; index values on Statbel, health index.
Elsewhere in Belgium
Wallonia and Flanders use other dates and other labels: see Wallonia rent indexation and Flanders rent indexation, or the comparison on rent indexation in Belgium.