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What is rent indexation?

Every year, on the date on which the contract entered into force, the rent for your accommodation may be adjusted to the cost of living. Until December 1993, this indexation was always based on the fluctuations of the consumer price index. From January 1994 onward, the  health index became the mandatory basis.

Which lease agreements are eligible?

Signed Written lease agreement Oral lease agreement
Before 28th February 1991

Indexation if both parties provided this

Between 28th  February 1991 and  31st May 1997

allowed

After 31st May 1997 allowed except when excluded in agreement indexation not allowed

 

How is the rent indexation calculated?

The indexed rent =   basic rent (2) x new index (3)
 

initial index (1)

 

The lease agreement entered into force 
before 1st January 1984
The lease agreement entered into force 
on or after 1st January 1984
The lease agreement entered into force 
on or after 1st January 2019
for a main residence in the Flemish Region
agreement signed 
before
1/01/1981
agreement signed 
between 1/01/1981 
and 31/12/1983
agreement signed 
before
1/02/1994
agreement signed 
on or after
1/02/1994
agreement signed 
on or after
01/01/2019
(1) initial index
December 82 
(82,54)
(1) initial index=
index of the month 
preceding the  
adjustment or entry 
into force of the 
agreement in 1983
(1) initial index=
index of the month 
proceding the signature 
signature of the 
agreement
(1) initial index=
health index of 
the month preceding 
the signature of 
agreemeent
(1) initial index=
health index of 
the month preceding 
entry into force
of the contract
or the rent review
(2) basic rent = rent:
- set by court order 
- failing such court order, basic rent used in  
the calculation of the indexed rent in 1990 
- failing this, last rent paid in 1983.
(2) basic rent = agreed rent
(3) new index = the (health) index of the month preceding the anniversary of the entry into force of the agreement

Source: FPS Justice, Brussels Housing Code, Walloon Decree on Housing Leases and Flemish Housing Rental Decree

 Calculate your rent yourself

 

More information

Following the 6th state reform, rent indexation has become a regional competence. Since 1st January 2018, 15th March 2018 and 1st January 2019, respectively, new regulations on rent have come into force in the Brussels-Capital Region, in the Walloon Region and in the Flemish Region (Brussels Housing Code, Walloon Decree on Housing Leases and Flemish Housing Rental Decree). If these texts do not regulate a particular aspect of tenancy, the federal legislation on leases is applicable (see the brochure on the law on rents published by the FPS Justice).

In concrete terms, only the Flemish Region has modified the indexation calculation. For contracts concluded after the 1st January 2019, the initial index is now the health index of the month preceding the entry into force of the contract, while previously, it was the health index of the month preceding the signature of the lease.

For questions on the indexation For questions on legal aspects
Statbel

(FPS Economy) 
North Gate - Koning Albert II-laan 16 
1000 Brussels
Tel. : +32 [0]800 120 33 (9:00 - 12:00) 
e-mail : ind@economie.fgov.be

Flanders
https://www.wonenvlaanderen.be/een-woning-huren
https://www.woninghuur.vlaanderen/huurdecreet-vanaf-01012019
Wallonia
http://lampspw.wallonie.be/dgo4/site_logement/contacts#dept
Brussels
https://www.baliebrussel.be/nl/kosteloze-rechtshulp/juridische-tweedelijnsbijstand
Justitiehuizen
Wallonië en Brussel
Vlaams Gewest