Tax residency in Portugal: when it starts and what it means

The two tests

You are tax resident in Portugal for a year if, in any 12-month period starting or ending in that year:

• you spend more than 183 days in Portugal, consecutive or not (any day with an overnight stay counts); or
• you spend fewer days but have a home here, in conditions suggesting you intend to keep it as your habitual residence.

Renting a flat on a long lease and moving your life here can be enough, even before day 183.

From the day you arrive

When you meet either test, you are resident from the first day you were in Portugal in that period, not from 1 January. The year you arrive is split: before that day you are a non-resident, after it a resident. Your Portuguese tax return covers only the resident part, plus any Portuguese income from before.

What being resident means

• Portugal taxes your worldwide income, with credit for tax paid abroad under the tax treaties.
• Freelance work done from Portugal is Portuguese income, even if every client is abroad.
• You file a yearly tax return and can use IRS Jovem or, if eligible, IFICI.
• Update your address with the tax authority. Staying registered as a non-resident while living here does not change the rules.

Leaving your old country

Your previous country may still consider you resident, for example if your family or main home stays there. Tax treaties have tie-breaker rules (permanent home, centre of vital interests, habitual abode, nationality). Tell your old tax authority that you have left and keep proof of your move.

Source: article 16 of the IRS Code. For split years and dual residency, check with an accountant.