Before you start

A NIF and Portal das Finanças credentials
A determination of when you became Portuguese tax resident
Records of foreign income, pensions and investments
An Alojamento Local registration, if you let a property short-term

Step-by-step

1
Work out when you became tax resident
Broadly, more than 183 days in Portugal in any twelve-month period, or having a home here in circumstances implying an intention to keep it as a habitual residence. The date matters because it starts the clock on the IFICI application deadline and on the first year you must file.
OnlineWho: You
2
Decide within weeks whether IFICI applies to you
IFICI gives a 20% flat rate on qualifying Portuguese employment or self-employment income and an exemption on most foreign-source income, for ten years — but only for scientific research, higher education, certified startup roles and specific listed highly-qualified activities. Pensions and generic remote work do not qualify. This is a professional-advice question, and it is time-limited.
OnlineWho: You, with an accountant
3
File the IFICI application by 15 January of the year after you become resident
It is a single deadline with no second chance and no retrospective application. If you become resident in 2026, the deadline is 15 January 2027. Missing it forfeits ten years of benefit for anyone who would have qualified.
OnlineWho: YouBy 15 January following your first resident year
4
File the annual IRS return between April and June
The return covers the previous calendar year and is filed through the Portal das Finanças, which pre-populates much of it. Employment income is withheld at source through the month, so most employees are reconciling rather than paying a lump sum.
OnlineWho: YouApril–June annually
5
Handle short-term rental income properly if you let a property
Alojamento Local income is taxed under a specific regime with its own coefficient, and the activity must be registered before you let. This is not the same as ordinary rental income and it is not something to declare informally. Given how much of the Algarve's housing stock is licensed for it, a lot of newcomers acquire this obligation without expecting to.
OnlineWho: You
6
Check foreign asset and account reporting
Portuguese residents must declare foreign bank accounts on the annual return, and foreign income is reportable even where a treaty relieves the tax. Reporting and taxing are different obligations, and the reporting one catches people who believe a double tax treaty ends the matter.
OnlineWho: You

Documents you’ll need

NIF and Portal das Finanças credentials
Employment or pension income statements from every source, foreign included
Records of foreign bank accounts and investments
Alojamento Local registration and booking platform statements, if letting
Evidence supporting an IFICI claim, if you are making one

Things most newcomers don’t know

NHR is closed and IFICI does not cover pensions — and this is the most widely disbelieved fact in the Algarve.

The region's foreign population was built on NHR's 10% flat rate for foreign pensions. That regime shut to new entrants after 31 December 2023. IFICI, the successor, targets scientific research, higher education, certified startups and listed highly-qualified roles; pensions and generic remote work are outside it. A retiree arriving now is taxed under ordinary progressive IRS on worldwide income. Because so many established residents here are still inside the old regime, the outdated version circulates constantly and in good faith.

Source: Portuguese Budget Law ending NHR; IFICI eligibility scope

The IFICI application is one deadline, once, and nobody sends a reminder.

If you qualify, you must apply by 15 January of the year following the year you became tax resident. There is no late filing, no retrospective grant and no second window. Ten years of a 20% flat rate and a foreign-income exemption turn on a date that falls in the middle of your first Portuguese winter, when you are still finding a dentist. Diary it the week you arrive and take advice well before it.

Source: IFICI application procedure

Alojamento Local income is its own tax category, and half this region's housing is licensed for it.

Short-term holiday letting is taxed under a distinct regime with its own rules and requires registration before you let, separately from ordinary long-term rental income. In the Algarve a newcomer can acquire this obligation by accident — by taking over a property with a licence, by letting their own place for the summer while travelling, or by subletting. Get it registered and taxed correctly rather than treating it as casual income.

Source: Portal das Finanças — Alojamento Local regime

A double tax treaty relieves the tax, not the obligation to report.

Portugal has treaties with most countries a newcomer will have come from, and they generally prevent the same income being taxed twice. They do not remove the requirement to declare foreign income and foreign accounts on your Portuguese return. People from countries where nothing is filed unless tax is owed reason from the treaty to a conclusion the treaty does not support, and penalties attach to the failure to declare rather than to unpaid tax.

Source: Portal das Finanças — declaring foreign income and accounts

Common mistakes to avoid

Believing the NHR pension regime still exists because most established foreign residents here are inside it.
Missing the 15 January IFICI deadline in the year after becoming resident.
Letting a property short-term without registering the Alojamento Local activity.
Assuming a double tax treaty removes the obligation to declare foreign income and accounts.
Quoting an IRS bracket table from a guide rather than the current year's reindexed figures.

Some of this may be out of date. Spotted something inaccurate? Help us keep it right for the next newcomer.