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Tool for Flanders

Calculate your rent indexation

Simple, indicative and compliant with Flemish guidelines. Including EPC correction factor and graphical evolution over the term of your contract.

This tool works entirely client-side: no data is stored. You can optionally have a summary sent by e-mail.

All fields below are required.

When was the residential lease concluded? *

Rent as stated in the contract on the effective date, without later indexations.

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The EPC correction factor applies to contracts before 1 October 2022 with label D, E, F or no EPC.

Compliant with Flemish guidelines, indicative and without storing data.

Fill in your details

Your indexed rent and chart will appear here as soon as you click “Calculate”.

Background

How does rent indexation work?

In Flanders, a landlord may adjust the rent each year to the evolution of the Belgian health index. The calculation is based on a fixed formula and can be influenced by the property's EPC label.

Indexed rent = Base rent × (Reference index / Starting index)

EPC regulation timeline

  • Before 1 October 2022

    No EPC restriction on indexation.

  • 1 Oct 2022 to 30 Sep 2023

    Indexation freeze for labels E and F (full ban).

  • From 1 October 2023

    Indexation allowed again, but limited via an EPC correction factor for labels D, E, F and no EPC.

  • From 2028 (announced)

    New restriction: labels E and F no longer indexable.

Next step

Calculated your new rent?

Create a personalised rent indexation letter for your tenant now.

Create an indexation letter

Rather hand it all over?

From pricing and candidate tenants to indexation, EPC and legal follow-up.

See our letting approach

What does your EPC label mean?

The label decides whether you may index and whether a renovation duty applies.

EPC in Flanders explained