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The official coefficient
Every year, INE publishes the rent update coefficient in the Diário da República. For 2026, it is 1.0224 (Notice No. 23174/2025/2, DR 2nd series, 19/09/2025) — rents can increase by up to 2.24%.
Aluseg calculates updates, issues receipts, and collects rent automatically, tailored for landlords in Portugal. You can also evaluate the tenant's solvency before renewing the lease.
Every year, INE publishes the rent update coefficient in the Diário da República. For 2026, it is 1.0224 (Notice No. 23174/2025/2, DR 2nd series, 19/09/2025) — rents can increase by up to 2.24%.
New rent = current rent × 1.0224. Example: €850 × 1.0224 = €869.04.
The landlord must communicate the coefficient and the new rent in writing, with at least 30 days' notice (Art. 1077(2)(c) of the Civil Code). A registered letter with acknowledgment of receipt is recommended.
If you did not apply the coefficient in 2024 or 2025, all is not lost: the law allows the application of coefficients from previous years, provided that no more than three years have passed (Art. 1077(2)(d) of the Civil Code). In 2026, you can, for example, apply 1.0694 × 1.0216 × 1.0224 if the last update was in 2023 — our calculator does the math for you. Please note: unapplied increases are never charged retroactively; the higher rent is only valid for the future.
If you want to verify if your rent is aligned with the current market, use our market simulator.
Always keep the notice and proof of delivery. If you need to review the lease, you can use our contract generator.
Source: INE / Diário da República. In 2023, the coefficient was limited to 2% by Law No. 19/2022.
1.0224, that is, +2.24%. It was published by INE through Notice No. 23174/2025/2, in the Diário da República of September 19, 2025.
€850 × 1.0224 = €869.04, meaning an additional €19.04 per month.
Yes. The update requires written notice at least 30 days in advance, indicating the coefficient and the new rent (Art. 1077 of the Civil Code).
Yes, provided that no more than three years have passed. In 2026, you can accumulate, at most, the coefficients for 2024, 2025, and 2026. Amounts not collected in the past are not recoverable.
It applies to residential and non-residential leases that follow the legal update regime. If the contract stipulates another update regime, what is written prevails.
On the first rent due after 30 days have passed since the receipt of the notice — in practice, usually the month following the end of the notice period.
If the update complies with the legal coefficient and the 30-day notice, the increase is valid by law and does not require the tenant’s agreement.