Rent indexation in Wallonia in 2025
Historical archive. In 2025, Walloon indexations followed the federal standard calculation (capping window ended on 31 October 2023), except EPC D-G leases capped in 2022-2023, subject to the adapted method.
In short (2025): in Wallonia, EPC capping window ended since November 2023. 2025 indexations followed the federal standard calculation — except EPC D-G leases capped in 2022-2023, indexed under the adapted method. Annual health inflation around 2.8 %.
Health indexes 2025 (Wallonia = national, single index for all of Belgium)
The health index is national — no regional variant. For 2025: progression from 135.52 in January to 136.69 in December, that is +0.86%.
Average increase 2025 in Wallonia
For a Walloon rent of €750 (Walloon median) indexed in 2025, the average increase was between €18 and €24 per month depending on the anniversary month. For higher rents (Liège/Namur city centres), proportionally more.
Walloon specifics 2025
- ✓ Federal standard calculation (EPC window ended in November 2023; adapted method for EPC D-G leases capped in 2022-2023)
- ✓ Walloon decree of 15 March 2018 framework still active (conditions, registered lease, etc.)
- ✓ Justice of the peace still competent for disputes (free procedure)
- ✓ Indexation on the anniversary of the lease's effective start date
Verify a 2025 Walloon indexation
If today (in 2026) you need to verify a 2025-applied indexation — for example because the tenant disputes the amount — use the Wallonia calculator. It applies exactly the Statbel indexes published in 2025.
Note: retroactivity for a forgotten indexation is strictly limited to 3 months. A 2025 indexation you discover today can no longer be claimed for the period prior to the last 3 months.
Frequently asked questions — Wallonia 2025
Did the EPC still apply in Wallonia in 2025? + −
The window mechanism had ended (31 October 2023), but EPC D-G leases capped in 2022-2023 remained subject to the adapted method of the decree of 19/10/2022 (indexation rebased on the adapted rent). Other Walloon leases followed the federal standard calculation, regardless of the EPC.
How to verify a 2025 indexation retroactively? + −
Our Wallonia calculator applies exactly the Statbel indexes published on the requested date. Select 2025 — the result reflects the formula applicable at that time.
Is retroactivity possible in 2026 for 2025? + −
Limited to 3 months by the Law of 6 August 1993. A forgotten 2025 indexation can no longer be claimed in 2026 (except for the last 3 months).
Which base does my 2025-signed lease use? + −
Base 2013 = 100 (until 31 December 2025). Leases signed from 1 January 2026 onwards use the new base 2025 = 100.
Related pages
- Full guide: indexation in Wallonia (current)
- Wallonia calculator
- Belgian recap 2025
- Comparison with Brussels 2025
Archive — 2025 data frozen. Page kept as a historical reference.