Portuguese NISS
Done for your service

Getting a NISS (Social Security Number) in Portugal

A NISS (Número de Identificação da Segurança Social) is a vital identification number for anyone working, freelancing, or starting a business in Portugal.

Relocate to Portugal
BENEFITS

Why do you need a NISS?

A NISS is necessary for various activities, including:
Required for work in Portugal
Needed for tax and social contributions
Grants access to healthcare & benefits
Essential for employment contracts
Mandatory for both EU and non-EU residents
Issued by Social Security authorities
Overview

What is a NISS and why you need it

A Portuguese NISS (Número de Identificação da Segurança Social) is your official Social Security number. It allows you to work legally in Portugal, make social contributions, and access healthcare, pensions, and other state benefits. Without it, you cannot be formally employed or register for many public services.
Whether you are moving to Portugal for work, studying with part-time employment, or starting your own business, having a NISS is essential. The process can feel bureaucratic, especially for non-EU citizens, but we make it simple by handling every step on your behalf.
Requirements

What you need to apply for your NISS

Get clarity on your next steps. In a free call, we’ll review your unique situation, explain the requirements, and build a plan tailored to your move. It’s free - no strings attached.

Valid Passport or ID
 A current and valid identification document is required to start the application.
Portuguese Address
You must provide a residential address, either in Portugal or abroad, for official correspondence.
Proof of Legal Stay
For non-EU residents, a valid visa or residence permit is required.
Employment or Activity Justification
Authorities request proof of why you need a NISS, such as an employment contract, self-employment, or enrollment in studies.
Social Security Office Submission
Applications are filed with the Instituto da Segurança Social, either in person or via a representative.
Tax Number (NIF)
In most cases, you must already hold a Portuguese tax number (NIF) before applying for a NISS
Included

What’s included in our NISS service

We manage the complete NISS application process for you. From preparing the documents to liaising with the authorities, we make sure your application is filed correctly and on time.

Book a free consultation
Personalized case assessment
Verification of NIF and eligibility requirements
Preparation & submission of application forms
Filing at the Social Security office
Follow-up until your NISS is issued and confirmed
One dedicated contact throughout the process
Money back guarantee

Secure your Portuguese NISS - without the hassle.

Let us take care of the paperwork, so you can continue living freely and worry-free.
The Team

A team ready for you

Legal know-how meets lived experience. We are a cohesive team of expats and local lawyers combining international perspective with on-the-ground expertise - guiding you through every step with empathy, clarity and confidence.  

Vanessa Mororó
Head of Legal Portugal
Maria Balaoura
Head of Legal Spain
Monica Correia
Global Relocation Manager
Domi Piette
Global Relocation Manager
Patricia Sousa
Global Relocation Manager
Real Stories, Real Results

Trusted by Expats Around the World

I had no idea where to start with my visa. Roots explained everything clearly and handled the entire process flawlessly. Their team was kind, responsive, and incredibly detail-oriented throughout.
Sophie
UK to Spain
Roots went above and beyond in helping with my D7. They even assisted me in getting my tax number and setting up a local bank account, all fully remote. About 4 months later and settled in Porto now, thanks to their amazing support!
Nathan
US to Portugal
From first call to approval, Vanessa took care of us, making the whole paperwork as smooth, and stress-free as possible.
David & Monica
US to Spain
Reviews

2000+ people
moved with Roots

Vanessa Mororó

Head of Legal Portugal

Team

Speak with our team today

"We’re not just lawyers - we’re partners in your journey. We take the time to understand your story, simplify the legal path ahead, and walk it with you - every step of the way."
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100% money-back guarantee
FAQ

Frequent questions

How does your pricing work - are there any hidden fees?

We offer fixed-price packages, so you'll always know exactly what you’re paying - no surprises, no hourly billing.

Will my case be handled by a real lawyer?

Yes, every client is assigned a dedicated in-house immigration lawyer. You’ll receive expert legal guidance and timely support throughout your entire process.

Where is your legal team located?

Our legal experts are based in Portugal, Spain, Greece and the UK. With teams on the ground, we stay closely aligned with local regulations and handle your case with precision and confidence.

What if I’m not sure which visa is right for me?

That’s exactly what we’re here for. Book a free consultation and we’ll walk you through your options based on your goals and situation.

Do you support family relocations?

Yes, we regularly assist families with their relocation. Whether you're applying together or bringing dependents later, we ensure every family member’s application is handled with care and in full compliance with local regulations.

Do you guarantee that I will get my visa?

While no company can guarantee visa approval, our success rate of over 98% across all visa types speaks for itself. We are so confident in our service that we even offer a money-back guarantee if visa outcomes aren't achieved.

Still have questions?
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Right Here With You, Wherever You’re Headed

Local Offices. Global Support.

Relocating is easier when you have experts by your side. With local offices in Portugal Spain, England and Italy, our legal experts are on the ground - ready to help you settle in with confidence.

Barcelona

Ave. Del Portal de l'Àngel 40,
08002 Barcelona,
Spain

Lisbon

Av. 24 de Julho 98,
1200-870 Lisboa,
Portugal
+351 21 020 5068

London

33 Queen St,
London EC4R 1AP,

England
+44 20 4634 0293

Athens

Leof. Kifisias 44, Marousi
151 25 Athens,
Greece

Dubai

Building A1
Dubai Digital Park
Dubai Silicon Oasis, UAE.

Overline

Start your relocation to Portugal today

Pay in 2 easy installments — 50% now, 50% before you receive your visa.