Update rent in Spain by CPI (IPC) or IRAV

Work out the yearly rent update in Spain with the general CPI (IPC) or the rent reference index (IRAV) of any month published by INE, or with the percentage in your contract: new rent, monthly and yearly difference, and a letter to notify it.

Latest final INE figure (September 2026): CPI 4.9%, IRAV 2.54%. Published on 14 October 2026. Next scheduled release: 13 November 2026.

Current monthly rent (€)

What does your contract update the rent by? General CPI (IPC, annual change)The most common reference in contracts. IRAV (rent reference index)Cap on the update for housing contracts signed since 26 May 2023 (Ley 12/2023). Data from November 2024. A fixed percentageWhen the contract sets the increase, e.g. 3% a year.

Index monthThe one your contract states (often the latest one published on the anniversary date).Agreed maximum (%, optional)If the contract says "CPI up to X %", enter X: the lower of the two applies.

Result

Current rent	€800.00
Percentage applied	4.9%
New monthly rent	€839.20
Difference per month	+€39.20
Difference per year (12 payments)	+€470.40

Percentage applied: the annual change in the general CPI (September 2026, INE figure: 4.9%). Chosen month (September 2026): CPI 4.9%, IRAV 2.54%.

Text to notify the update

[Name of the other party]
[Address of the rented home]

Subject: yearly rent update

In accordance with the update clause of the tenancy agreement and article 18 of Spain's Urban Leases Act (Ley 29/1994, de Arrendamientos Urbanos), I hereby notify you that the monthly rent is updated by 4.9%, based on the annual change in the general CPI (September 2026, INE figure: 4.9%).

Current rent: €800.00
Updated rent: €839.20 (+€39.20 per month)

The updated rent will apply from the month following receipt of this notice.

[Place and date]
[Name and signature]

CPI flash estimate (October 2026): 4.9%. Not used: rent updates use the final figure, which INE publishes in the middle of the following month.

CPI and IRAV history (CSV)

Every month available, from November 2015 to September 2026: annual change in the general CPI and the IRAV, for spreadsheets.

Updated: 1 Nov, 23:23 · Source: Elaboración propia con datos extraídos del sitio web del INE: www.ine.es

How rent updates work in Spain

Under article 18 of Spain's Urban Leases Act (LAU), during the tenancy the rent is only updated on each anniversary of the contract and on the terms agreed: without an express update clause, the rent is not updated. Many contracts use the annual change in the general CPI (IPC) of a given month, usually the latest one published on the anniversary date.

The IRAV and Ley 12/2023

Ley 12/2023 on the right to housing, in force since 26 May 2023, amended article 18 of the LAU and asked INE for a reference index for the yearly update of housing rents (IRAV), which acts as the cap on the yearly increase in housing contracts signed since then. INE has published it monthly since 2025, with data from November 2024. Older contracts are updated as their clause says.

How it is notified

Whoever updates the rent must notify the other party in writing, stating the percentage applied; the updated rent is payable from the month after the notice (LAU art. 18.2). The calculator's text is a draft.

This calculator applies the index and month you choose; it does not interpret your contract. Check the update clause and, if in doubt, ask a professional or your local housing office.

Sources

Everything is calculated in your browser: this site doesn't send what you type anywhere.