Rent indexation in Belgium in 2026
Overview of the indexation of Belgian residential rents over 2026: evolution of the health index, expected average increase, regional rules in force. Daily updates with Statbel indexes.
2026 health indexes — monthly view
8 indexes published so far. Latest: 140.30 — annual variation vs December 2025: +2.64 %
Expected average increase in 2026
After the 2022-2023 inflation peak (when the health index climbed by +9 % in one year), the evolution returned to a more moderate pace in 2024-2025 (~2-3 % annually). In 2026, the trend stabilises around 2 %.
Worked example (rent 850 €, indexation on 1 July 2026):
June 2025 index: ~134.6 — June 2026 index (estimated): ~137.3
Approximate increase: +17 €/month (indexed rent ≈ 867 €)
Regional rules in force in 2026
Wallonia: federal calculation (adapted method for capped EPC D-G)
The EPC capping window ended on 31 October 2023. In 2026, Walloon leases follow the standard federal formula — except EPC D-G leases capped in 2022-2023, which remain subject to the adapted method of the decree of 19/10/2022. Indexation possible for registered leases.
Brussels: EPC still active for pre-2022 leases
For leases signed before 14 October 2022, the EPC coefficient applies: 100 % for A-C, 75 % for D-E, 0 % for F-G. For more recent leases, standard federal calculation.
Flanders: permanent EPC (the strictest)
The decree of 4 July 2023 made the EPC mechanism permanent. The Flemish grid is more restrictive than that of the other regions: 75 % from class C, 50 % in D-F, 0 % in G.
Personalised 2026 indexation calculation
To calculate your 2026 indexation precisely according to your lease, your region and your EPC, use our 2026 calculator or the main calculator (which supports all cases).
Cumulative history for leases that ran through 2021-2026
For a lease signed in 2021 and indexed each year on its anniversary date, the cumulative indexation over 5 years reaches approximately +20 % to +25 % depending on the anniversary month. This is the cumulative effect of post-Covid inflation (especially 2022-2023).
- Initial rent 800 € in 2021 → about 980-1000 € in 2026
- Initial rent 1200 € in 2021 → about 1470-1500 € in 2026
- Initial rent 1500 € in 2021 → about 1840-1875 € in 2026
Related pages
Frequently asked questions — 2026
What is the average rent indexation in 2026? + −
Annual health inflation stabilises around 2 % in 2026, after the 2022-2023 peak. For an 800 € rent, this corresponds to an average increase of 16-20 € per month depending on the anniversary month.
Have all 2026 indexes already been published? + −
Statbel publishes the monthly index around the 26th of the month. To calculate an indexation on anniversary date X of 2026, you therefore need the index of month X-1, which is only available ~26 days later.
My 2026 lease starts with which base? + −
Base 2025 = 100. A new statistical base entered into force on 1 January 2026 for new leases. Pre-existing leases continue with their original base (1988, 1996, 2004, 2013).
Does the EPC matter in 2026? + −
Yes in Brussels (leases pre-14/10/2022) and in Flanders (all leases). No longer in Wallonia since 31 October 2023. See the detail by region.