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The official coefficient
Every year, the 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 rents automatically, designed for landlords in Portugal. You can also evaluate the tenant's solvency before renewing the contract.
Every year, the 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 notifies the tenant in writing, at least 30 days in advance, of the coefficient and the new rent (Art. 1077, paragraph 2, subparagraph c) of the Civil Code). A registered letter with acknowledgment of receipt is recommended.
If you did not apply the coefficient in 2024, 2025, or 2026, all is not lost: the law allows you to apply coefficients from previous years, provided no more than three years have passed (Art. 1077(2)(d) of the Civil Code). In 2026, for example, you can 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 only applies to the future.
If you want to confirm whether your rent is aligned with the current market, use our market simulator.
Always keep the communication and the proof of sending. If you need to review the contract, you can use our contract generator.
| Year | Coefficient | Variation |
|---|---|---|
| 2026 | 1.0224 | +2.24% |
| 2025 | 1.0216 | +2.16% |
| 2024 | 1.0694 | +6.94% |
| 2023 | 1.0200 | +2.00% (limited by law) |
| 2022 | 1.0043 | +0.43% |
| 2021 | 0.9997 | −0.03% |
| 2020 | 1.0051 | +0.51% |
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 extra 19.04 € per month.
Yes. The update requires written communication at least 30 days in advance, stating 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 of 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 from the receipt of the communication — in practice, usually in the month following the end of the notice period.
If the update respects the legal coefficient and the 30-day notice, the increase is legally valid and does not require the tenant’s agreement.
