Which leases will be concerned?
- Leases whose rent review clause names Q4, whatever year they were signed.
- For a review dated after the release and before the IRL for Q4 2027 is published, expected in mid-January 2028.
- Leases signed after its release and before the next index, if they name no quarter.
How will the calculation work?
New rent = current rent × IRL for Q4 2026 ÷ 145.78, where 145.78 is the IRL for Q4 2025. As soon as the value is out, this page will give the result for a €700 rent and the rent increase calculator will use the new value.
Is your review date before the release?
Then the latest index published on that date applies, i.e. the one for Q4 2025 (145.78), compared with Q4 of the year before. You don't have to wait: see the page for the IRL for Q4 2025.
The Q4 IRL, year after year
| Quarter | IRL | Change over one year | In the Journal officiel |
|---|---|---|---|
| Q4 2026 | released in mid-January 2027 | ||
| Q4 2025 | 145.78 | +0.79% | 16 Jan 2026 |
| Q4 2024 | 144.64 | +1.82% | 16 Jan 2025 |
| Q4 2023 | 142.06 | +3.50% | 18 Jan 2024 |
| Q4 2022 | 137.26 | +3.50% | 31 Jan 2023 |
| Q4 2021 | 132.62 | +1.61% | 15 Jan 2022 |
| Q4 2020 | 130.52 | +0.20% | 17 Jan 2021 |
| Q4 2019 | 130.26 | +0.95% | 16 Jan 2020 |
| Q4 2018 | 129.03 | +1.74% | 16 Jan 2019 |
| Q4 2017 | 126.82 | +1.05% | 13 Jan 2018 |
| Q4 2016 | 125.50 | +0.18% | 14 Jan 2017 |
| Q4 2015 | 125.28 | -0.01% | 15 Jan 2016 |
| Q4 2014 | 125.29 | +0.37% | 17 Jan 2015 |
| Q4 2013 | 124.83 | +0.69% | 17 Jan 2014 |
| Q4 2012 | 123.97 | +1.88% | 12 Jan 2013 |
| Q4 2011 | 121.68 | +2.11% | 15 Jan 2012 |
| Q4 2010 | 119.17 | +1.45% | 16 Jan 2011 |
| Q4 2009 | 117.47 | -0.06% | 17 Jan 2010 |
| Q4 2008 | 117.54 | +2.83% | 17 Jan 2009 |
| Q4 2007 | 114.30 | +1.36% | 16 Feb 2008 |
| Q4 2006 | 112.77 | +1.59% | 14 Feb 2008 |
| Q4 2005 | 111.01 | +1.66% | – |
| Q4 2004 | 109.20 | +1.59% | – |
| Q4 2003 | 107.49 | +1.78% | – |
| Q4 2002 | 105.61 | – | – |
The other quarters are in the full IRL table since 2008.
The rules to keep in mind
- The lease must contain a rent review clause; without one, the rent stays the same during the lease.
- The increase has to be requested: it is never backdated and is lost after one year.
- The IRL is a cap: you can apply a smaller increase, or none.
- Rent for a home rated F or G on the energy certificate (DPE) can no longer be increased.
The rent increase letter generator prepares the French letter to your tenant as a PDF. The whole process is in the guide to rent increases in France.
On your lease anniversary, the new rent is worked out and the French letter to your tenant is ready. Free for one property.
Frequently asked questions
When is the French IRL for Q4 2026 published?
INSEE publishes it in mid-January 2027. This page will show the official value as soon as it is out; no estimate is given before then.
Can the rent be reviewed before the IRL for Q4 2026 is out?
Yes, if the review date in the lease falls before the release: the latest index published on that date applies, i.e. the one for Q4 2025. If the review date falls after the release, you need to wait for the new value. The landlord has one year to ask for the increase.
My lease doesn't name a quarter: will this index apply?
Only for a lease signed after its release and before the next index comes out: the reference is the latest IRL published on the day of signing.
Sources
- INSEE: official IRL series (001515333)
- French law no. 89-462 of 6 July 1989, article 17-1 (Légifrance)
- Service-public.fr: rent increases during the lease
- Service-public.fr: rent reference index (IRL)
This page gives general information and is no substitute for personal legal advice.