Rent revision (IRL): calculate it and send a compliant letter

Last updated 10 May 2026AdminLanding Editorial

Look up the INSEE IRL index, compute the new rent correctly, and generate a ready-to-send revision letter — with the DPE F/G rent-freeze checked automatically.

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How rent revision works

Four steps from the IRL index to a letter your tenant will accept.

Check your lease clause

Rent can only be revised if the lease contains a revision clause (clause de révision/indexation). It names the IRL quarter to use as the reference.

Apply the IRL formula

New rent = current rent × (latest IRL ÷ IRL of the same quarter one year earlier). AdminLanding looks up the INSEE index and computes it for you.

Generate the notice letter

Produce a compliant rent-revision letter (lettre de révision de loyer) stating the old rent, the indices used, and the new rent — ready to send.

Send within the deadline

The revision applies from the lease anniversary date. You have one year to claim it — after that, the year's increase is lost and not retroactive.

Rent revision in France: the rules

When can a landlord revise the rent?

For a primary-residence lease governed by the Law of 6 July 1989, the rent may be revised once a year only if the lease includes a revision clause (clause de révision or clause d'indexation). The revision is based exclusively on the IRL — the rent reference index published quarterly by INSEE. No other index or arbitrary increase is permitted during the tenancy.

The calculation

The legal formula is:

new rent = current rent × (new IRL ÷ IRL of the same quarter, previous year)

You must reuse the same reference quarter every year — the one named in the lease, or the latest IRL published when the lease was signed. AdminLanding fetches the correct INSEE index automatically so you never transpose two digits.

The energy-rating freeze (DPE F & G)

Since 24 August 2022, the rent of an energy-poor dwelling rated F or G on its DPE cannot be revised or increased in metropolitan France — the IRL revision is blocked until the property is renovated to a better class. Verify your property's DPE before sending any revision.

Not sure of your class? See our DPE 2026 guide and free check.

Deadlines and notice

The revision takes effect on the lease anniversary date (or the date set by the clause).
The landlord has one year to apply it; beyond that, the year's increase is lost.
It is not retroactive — a late revision only applies from the request date forward.
A written notice protects both parties and documents the indices used.

Revising at lease renewal instead? Start from our ALUR-compliant lease template and issue rent receipts at the new amount.

Frequently Asked Questions

IRL index, calculation, deadlines, and the energy freeze.

What is the IRL (Indice de Référence des Loyers)?

The IRL is the rent reference index published every quarter by INSEE. It is the only legal basis a landlord may use to revise the rent of a primary-residence lease during the tenancy. It is calculated from the average annual change in consumer prices excluding tobacco and rents.

How is the rent revision calculated?

New rent = current rent × (new IRL ÷ IRL of the same quarter one year earlier). Example: a €800 rent indexed on the Q2 IRL, with Q2 2025 at 145.6 and Q2 2024 at 143.46, becomes 800 × (145.6 ÷ 143.46) = €811.93.

Can I revise the rent without a clause in the lease?

No. Without an explicit revision clause (clause d'indexation) in the signed lease, the rent stays fixed for the whole term. The revision is never automatic — the landlord must apply it actively each year.

Can I still revise the rent of an energy-poor home (DPE F or G)?

No. Since 24 August 2022, rent on F- and G-rated dwellings in metropolitan France is frozen — no IRL revision and no increase between tenancies — until the energy class improves. Check your property's status first.

Is the rent revision retroactive?

No. The landlord has one year from the revision date (the lease anniversary) to apply the new rent. If applied late, it takes effect only from the request date — the missed months are not recoverable.

Which IRL quarter should I use?

Use the quarter named in the lease's revision clause. If none is specified, the reference is the most recent IRL published on the lease signature date. The same quarter is then used every year for consistency.

Do I have to notify the tenant in writing?

It is strongly recommended. A written rent-revision notice stating the old rent, both IRL indices, the calculation and the new rent gives you a clear, dated record — and is required to start the one-year application window cleanly.

Important: AdminLanding is a technology platform, not a law firm. We do not practice law, provide legal advice, or act as lawyers (avocats), notaries (notaires), or any regulated legal professional as defined by French Law No. 71-1130 of December 31, 1971. The documents and information provided are general-purpose templates and calculations for convenience only — they do not constitute personalized legal advice and are not tailored to your specific situation. We strongly recommend consulting a qualified legal professional before relying on any document generated through our platform.

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