Which leases does the IRL for Q4 2025 apply to?
- Leases whose rent review clause names Q4, whatever year they were signed.
- For a review dated from 16 January 2026 and before the IRL for Q4 2026 is published, expected in mid-January 2027. On the review date, you always take the latest index published for the lease's quarter.
- Leases signed while it was the latest published index and that name no quarter: it becomes their reference index.
Example: a €700 rent reviewed with the IRL for Q4 2025
You compare the index for Q4 2025 (145.78) with the one for Q4 2024 (144.64):
700 × 145.78 ÷ 144.64 = €705.52, i.e. €5.52 more per month and €66.24 over a year. Only the rent excluding charges is reviewed.
| Current rent excl. charges | Reviewed rent | Difference per month |
|---|---|---|
| €500.00 | €503.94 | +€3.94 |
| €700.00 | €705.52 | +€5.52 |
| €900.00 | €907.09 | +€7.09 |
| €1,200.00 | €1,209.46 | +€9.46 |
For your own rent, open the rent increase calculator pre-filled with Q4 2025 and change the amount.
The Q4 IRL, year after year
| Quarter | IRL | Change over one year | In the Journal officiel |
|---|---|---|---|
| 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 whole process, including the letter to the tenant, 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
What is the French IRL for Q4 2025?
The rent reference index (IRL) for Q4 2025 is 145.78, +0.79% over one year. It appeared in the Journal officiel on 16 January 2026 (source: INSEE).
Until when can the IRL for Q4 2025 be used?
It applies to rent reviews dated before the IRL for Q4 2026 is published, expected in mid-January 2027. The landlord then has one year after the review date to ask for the increase; after that, the increase for that year is lost.
My lease doesn't name a quarter: does this index apply?
Only if it was the latest IRL published on the day the lease was signed. In that case, Q4 remains the reference quarter for every later review.
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.