Updating Your Tax Address in Portugal

Your NIF stays the same

The Portuguese NIF is a permanent identification number. Moving to Portugal does not normally mean obtaining a new NIF. Instead, the relevant step is updating the information associated with the existing number when your address or tax-residence status changes.

When tax residence can change

Portuguese tax-residence rules consider factors such as spending more than 183 days in Portugal during a relevant period or having a home available in circumstances indicating an intention to use it as a habitual residence. Other rules can also apply, so individual tax situations should be checked carefully.

Update the Tax Authority

Official Tax Authority guidance states that a person who becomes tax resident should change their status from non-resident to resident by updating the registered address. The evidence required can differ for EU/EEA citizens and third-country nationals.

Documents for third-country nationals

Depending on the case, acceptable evidence can include a residence permit, an AIMA appointment document or a receipt showing a pending AIMA residence process, together with address evidence where the immigration document does not show the Portuguese address.

Why the update matters

The registered tax address affects correspondence and the way the individual is treated in interactions with the Portuguese Tax Authority. It can also matter for employment, banking, contracts and annual tax filing.

Complex cases

Tax residence can have consequences beyond the administrative address change, particularly for people with income or assets in more than one country. Where cross-border tax obligations are involved, professional tax advice may be appropriate.