Rent update

This section exists because the mechanism catches out a great many landlords who own property in Portugal from abroad, and because none of it works the way a rent-review clause works in most other jurisdictions.

The starting point is that the update is not automatic. Nobody applies it for you, no agency does it on your behalf unless you have instructed one, and the rent does not drift upwards with inflation on its own. The coefficient is a permission, not an event. If you do nothing, the rent stays exactly where it is.

The coefficient itself comes from the statistics office, not from the landlord and not from the tenant. It is derived from the consumer price index excluding housing over the twelve months to 31 August, published as a formal notice, and it is a ceiling rather than a target: a landlord is free to update by less, or not at all.

To use it you must give the tenant written notice, at least 30 days before the date the new rent takes effect, stating the new figure and the coefficient applied. That notice is not a formality. Without it the increase is simply not due, however correct the arithmetic. And the update may be made only once a year, and only after a full year has run since the tenancy began or since the last increase, so there is a specific annual window and it is tied to the anniversary of the contract.

Here is the part that costs money, and the reason this page reports lost years rather than just producing a figure.

A landlord who let several years pass without updating does not lose everything, but does not recover everything either. The Civil Code allows unused coefficients to be applied later, provided no more than 3 years have passed since the date it would first have been possible to apply them. Anything older than that is gone for good: it does not accumulate, it cannot be charged retrospectively, and it does not become available again.

In practice, a landlord with six years of un-updated rent recovers three and loses three, and ends up with exactly the same rent as one who had let only three years pass. The two positions are indistinguishable from that point on, which is a hard thing to discover after the fact.

For an owner living abroad, this is the single most useful thing on the page. A property let through a long, quiet tenancy is precisely the kind that goes years without anyone thinking about the annual notice, and the loss is silent: no letter arrives to say a year has expired.

The coefficient governs urban and rural tenancies, residential and otherwise, but it yields to the contract. Where the parties agreed a different updating criterion in writing, that criterion governs and the INE figure stops being the relevant number. Worth checking the lease before relying on this page.

In years of high inflation the Portuguese state has intervened to cap the effect: in 2023 it imposed a 2% limit when the coefficient pointed to 5.43%, and in 2024 a further limit came with the housing package. For 2026 we found no instrument imposing a cap, but this is territory that moves with the annual budget law and is worth confirming before serving notice.

Nothing here addresses the tax on the rent itself, which is a separate matter and turns on the length of the contract and on your tax residency.