2026 indexation calculator
Dedicated tool for indexations to be applied in 2026. Statbel indexes updated daily, automatic regional EPC coefficients.
A few details.
The exact result.
Property region, lease dates, initial rent, EPC class. The calculation runs instantly.
Calculate your 2026 indexation
The calculator above is preconfigured for 2026 indexations. Enter the lease signature date, your initial rent and the property's energy class. The regional EPC coefficient is applied automatically where applicable.
Reminder: indexation takes effect on the anniversary of the lease's effective start date (not the signature). You must notify the tenant in writing.
Average increase 2026
Annual health inflation is expected around 2 % in 2026, stabilising after the rises of 2022-2024. For an initial rent of €800, the average increase is between €16 and €20 per month depending on the anniversary month and region.
Regional specifics in 2026
- Wallonia: federal standard calculation, except EPC D-G leases capped in 2022-2023 (special method of the decree of 19/10/2022, applied automatically)
- Brussels: EPC coefficient for leases signed before 14 October 2022
- Flanders: permanent EPC coefficient since the decree of 4 July 2023
Calculate by region
Each region has its own rules: for a detailed calculation with the legal explanations that apply to your lease, use the tool dedicated to your region.
- Brussels indexation calculator — automatic EPC coefficient for pre-October 2022 leases
- Calculation tool for Wallonia — federal formula, no EPC factor
- Indexation in Flanders — EPC coefficient based on the dwelling's label
- Do the calculation manually, step by step — to double-check the result
Frequently asked questions
Which index base does my 2026-signed lease use? + −
Base 2025 = 100. A new Statbel series came into force on 1 January 2026 for new leases. Older leases keep their original base.
What is the average indexation in 2026? + −
Annual health inflation estimated around 2 %. For an initial rent of €800, average increase of €16-20 per month depending on the anniversary month and region.
When will the index for my 2026 anniversary month be available? + −
Statbel publishes the monthly index around the 26th of the month. To calculate an indexation on your anniversary date in 2026, the index for the previous month must already be published — that is ~26 days after the start of that month.