How to Get a NIF in Portugal as a Foreigner
Learn how to get a Portuguese NIF as a foreigner, what documents you may need, where to apply, and common mistakes to avoid.
Live in Portugal guides
Documents guides
Portuguese paperwork, identification numbers, certificates, and renewal steps.
This section focuses on the documents and numbers that unlock everyday life in Portugal, from tax and social security registration to records you may need for work, housing, healthcare, and immigration.
Published guides
Practical guides in this category, ordered by the most recently updated.
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How to Get a NISS in Portugal as a Foreigner
Learn how foreigners can request a NISS in Portugal, what documents are usually needed, how it works with jobs, AIMA, remote work, and Social Security.
Common questions
Which Portuguese number should I apply for first: NIF, NISS, or utente number?
Most people start with a NIF because it is used widely for contracts, banking, and public services. NISS is usually tied to work or social security, and the utente number is for public healthcare access.
What documents should I keep ready before dealing with public services?
Keep your passport or ID, proof of address, residence document or visa details, NIF, and any work, study, or family documents that explain why you need the service.
How do document requirements differ for workers, students, and family members?
Workers may need employment or self-employment proof, students may need enrolment documents, and family members may need relationship or dependency documents.