Rent reference index (IRL): definition, calculation and value

The IRL, the rent reference index, serves as a basis to reassess the rent for rentals each year. It applies to both empty and furnished rentals. This index, published every quarter by INSEE, aims to protect tenants from excessive rent increases. Definition, calculation… Focus on IRL in 2025.

Capital video: What is the reference index for rents?

What does IRL mean in France?

The IRL is the reference index of rents, an index published each quarter by INSEE (National Institute of Statistics and Economic Studies) which serves as Reference for the revision of rents in united accommodation rental contracts.

What is the reference index for INSEE rents?

Rent review index: definition

IRL is therefore an index that allows Revalle the cost of a rent an empty or furnished accommodation with a housing lease. This index seems every quarter. It is published by INSEE. It corresponds to the average of the evolution of consumer prices (excluding tobacco and rents) over the last twelve months.

An index that supervises the increase in rents

The reference index of rents supervise the increase in rents. Thus, he protects tenants from an unreasonable rent increase. The amount of the rent evolves at the same time as their purchasing power. In parallel, the owners are guaranteed to be able to increase the rent according to the index.

Housing and rentals subject to the indexing of rents

IRL serves as compulsory base for housing leases Submitted to law n ° 89-462 of July 6, 1989. The parties to a lease contract other can decide to use this index as a reference value. Since their duration is less than one year, the furnished rentals that fall within the framework of a student lease or a mobility lease are not governed by the IRL.

When does the owner have the right to increase the rent?

Annual rent revaluation request

As part of the rentals granted as a main residence, the increase in rent can be made a times a year (Article 17-1 of Law No. 89-462 of July 6, 1989) and at the request of the lessor (owner). The mention of the application of the IRL and the current index at the time of signing the lease must appear in the contract.

A revision neither automatic nor retroactive

The annual review request is not automatically made. She only intervenesAt the request of the lessor within one year from the date provided for by the rental contract. Since the entry into force of the Alur law of March 24, 2014, the lessor cannot reassess the rent over several years, in a retroactive manner.

A duty to inform the lessor

The owner is required to inform the tenant of the increase in rent by registered mail with acknowledgment of receipt or by act of bailiff. The increase comes into force As soon as the Revision request.

IRL fixes the rent increase in rent

The revision by the reference index of rents is not an obligation for the lessorwhich can give it up (especially in the event of a negative index). On the other hand, it sets the maximum applicable increase ceiling during rental and the renewal of the lease (except in exceptional cases, such as that of the manifestly undervalued rent).

How to calculate the increase in rent according to the IRL?

Check the date provided by the rental contract

It is necessary to check the date provided by the lease for the revision of the index. Usually this intervenes at the An anniversary of the contract (In the absence of precision). The contract also mentions the reference index of the rents which will be applicable (failing this, we refer to that in force at the signature).

Consult the table of INSEE reference indices to find out that in force

Second, the reference index must be obtained for the quarter and the current year : They can be viewed directly on the INSEE or Anil website (National Agency for Tenants Information). The rental contract must also specify the reference index of the rents to be used.

Calculation formula

Once these elements have been obtained, the amount of the increase in rent is obtained by the Next calculation formula : Rent out of charge × (IRL applicable to the date of revision/IRL applicable in the same quarter of the previous year or IRL N-1) = new revised rent.

Anil simulator to calculate the increase in its rent 2025

The anil provides tenants with an online simulator to calculate the estimated amount of rent review. Just indicate the reference quarter of the rent reference index provided for in the lease and the current amount of rent excluding charges.

What is the IRL in force currently (June 2025)?

Table of the evolution of the IRL from 2020 to 2025

The latest rent reference index (IRL) was published by INSEE on January 16, 2025. This is the IRL of fourth quarter 2024. In mainland France, it was 144.64. It was up (+ 1.82 %) compared to the IRL of the fourth quarter 2023.

New IRL publication: T1 2025

For the first quarter of 2025, the IRL was published on April 15, 2025 and was 145.47an increase E 1.40 % compared to the same quarter of the previous year. For communities governed by article 73 of the Constitution (regions and overseas), the IRL of the first quarter of 2025 is of 142.67. In Corsica, it is 141.28.

When is the IRL published?

Every quarterINSEE publishes the last value of the IRL, which sets the maximum annual rent increases that donors may require, when the lease contains an annual revision clause. If the lease does not specify anything, it is the last published at the signing of the contract that applies. IRL in the second quarter of 2025 will be published on 11 July 2025.

What are the specifics of IRL in Corsica and overseas?

The rent reference index (IRL) is applied uniform in mainland France, but there are certain specificities for Corsica and the overseas departments and regions (DOM-ROM), due to their economic and social particularities.

IRL in Corsica

The IRL in Corsica follows the same calculation rules as that of the metropolis. However, rent adjustments can be influenced by local criteriasuch as:

• Rent often higher in certain tourist areas or due to the specificity of the local real estate market, which can make the revision of rents a little more sensitive to economic fluctuations;
• Specific devices, which may exist in certain municipalities to limit the increase in rents.

IRL in the overseas departments and regions (DOM-ROM)

Although IRL is calculated on the basis of the same principle, Each DOM-ROM has its own rent review indexwhich takes into account the economic particularities of each region. In addition, due to higher life costs, the index can record a different development compared to the metropolis.

For example, in certain overseas departments, the revision can be adjusted to better reflect local economic conditions, such as the increase in prices of basic necessities.

Particularities of rents overseas

Certain overseas territories may benefit from specific regulations to limit rent increasesto avoid excessive inflation situations on the rental market. In Guadeloupe, Reunion and Guyana, systems have been put in place to supervise the rents, higher due to the restricted real estate market or the scarcity of goods.

What difference between IRL and ICC?

ICC: the construction cost index

ICC is used to readjust rents in commercial leases and construction contractsin particular for the revision of commercial rents or long -term leases linked to real estate projects. It reflects the evolution of the cost of construction taking into account materials, labor, and other costs associated with construction.

Differences between ICC and IRL

Thus, these two indices make it possible to adjust the rents, but in different contexts and on the basis of Distinct economic criteria.

• IRL is used for housing rents, while the ICC applies to trade rents and real estate contracts in the construction sector.
• The IRL reflects the evolution of consumption prices, while the ICC follows the evolution of construction costs.

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