You need the NIF to buy goods or services, sign contracts or open a bank account. Here is who has to ask for one, and how.
If you are Portuguese and have a Cartão de Cidadão, your NIF was given to you automatically. You don't need to ask for anything.
Everyone else has to ask for one. Any foreign person can, living in Portugal or not.
You ask at any Serviço de Finanças, a tax office, or Loja do Cidadão, a citizen shop. You need an appointment first.
Book it on the contacts page of Portal das Finanças, without signing in, or by phone:
A request can also be sent online, through the e-balcão of Portal das Finanças. The tax authority's leaflet describes that route for a legal representative who handles the request for you.
To register as a non-resident, with your address abroad, bring:
Bring originals or certified copies. A document in a foreign language needs a certified translation.
To register as a resident straight away, gov.pt asks for more:
Not to get the number. The tax authority's leaflet says that naming a tax representative is not mandatory when a NIF is given to a non-resident.
That changes when you have what the leaflet calls a tax relationship in Portugal. Its examples:
From that moment you have 15 days to name a tax representative in Portugal or, instead, to sign up for electronic notifications: the notification system on Portal das Finanças, or ViaCTT.
If you live in a country of the European Union, in Norway, in Iceland or in Liechtenstein, both are optional.
gov.pt's page says a tax representative is mandatory for a non-resident from outside the European Union. The tax authority's own leaflet, from July 2025, says it is not, at the moment the number is given. Ask at your appointment before you pay anyone to represent you.
You count as a resident once you have stayed in Portugal for more than 183 days, in a row or not, in any period of 12 months. Or sooner, if you have a home here that you mean to keep as your usual residence.
You then have 60 days to tell Finanças: on Portal das Finanças, through the e-balcão, or in person by appointment.
gov.pt says the request is free for people with a Cartão de Cidadão and can have costs in other cases, for example when it is made through a tax representative. The tax authority's leaflet names no fee.
Need help? gov.pt's page explains how to book a support video call or contact Linha Cidadão.
Checked on 4 October 2026 against the official pages above.
Rules change. The official page is the one that counts.
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