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How to apply NISS number in Portugal?

Obtaining a NISS number in Portugal can still be complex for both individuals and employers. What steps do expatriates need to take to get their NISS in Portugal?

NISS Number in Portugal

Who is eligible to apply for and obtain a Portuguese social security number (NISS Number in Portugal)?


Foreigners must be legally residing in Portugal and possess a Portuguese tax identification number (NIF). EU nationals do not require a residence permit. It's important to note that having a NISS doesn't guarantee social assistance, and individuals should not rely on it for temporary aid until employed and contributing. Those in an irregular situation are not entitled to a Portuguese social security number.


To obtain your NISS in Portugal, if applying online, you'll need to provide:


  • Copy of your NIF (Portuguese tax identification number)

  • Copy of your identity card (passport for non-EU citizens)

  • For EU citizens since November 2023, a copy of the CRUE, the Certificate of Residency.

For those seeking employment and requiring a social security number to be hired by a Portuguese company, it's advisable to apply online through our website.


To apply for a Portuguese NISS online, follow these steps:


1. Prepare the following documents:

- Copy of your NIF (Portuguese tax identification number)

- Copy of your passport or identity card

- Copy of the CRUE (for EU citizens)

- Portuguese address (proof not required)

- Portuguese telephone number (mandatory)


2. Visit our website and fill out the online form.

3. Submit the required documents through the website.

4. Wait for approximately one week to receive your NISS.


Foreigners wishing to work in Portugal must complete several steps beyond obtaining a social security number. They also need to apply for a residence visa from the Foreigners and Borders Service (SEF) and obtain a Tax Identification Number (NIF) from a Finanças office.


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