From Belgium · Prepared remotely, signed in person
Set up your company in Portugalfrom Belgium
You are a Belgian resident considering a company in Portugal? The NIF is prepared remotely, but signing the articles and opening the bank account are done in person during a trip to Lisbon — a real setup, not a remote shell. And the decisive issue is not Portuguese: it is your situation in Belgium (residence, Cayman tax, double taxation) that determines whether the operation is sound or risky. Here are the markers, dated 2026, to validate with a tax adviser.
75+ entrepreneurs supported since 2025 · Service in French · Lisbon, Portugal
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The real risk is not in Portugal, it is in Belgium
If you remain a Belgian tax resident, setting up a company in Portugal does not take you out of the Belgian tax net. Belgium taxes its residents on their worldwide income and has a regime targeting low-taxed foreign structures: the « Cayman tax ».
The Cayman tax (articles 5/1 and 220/1 of the 1992 Income Tax Code) taxes, by transparency, certain income of foreign « legal constructions » in the hands of the Belgian-resident founder. The administration has clarified that the Belgium-Portugal treaty does not, in principle, stand in its way (circular 2024/C/79).
- The Cayman tax mainly targets low-taxed patrimonial or passive structures; its application to a genuinely operational Portuguese company is assessed case by case, to be validated with a tax adviser.
- Place of effective management matters: a Portuguese company run from Belgium may be attached there for tax purposes.
- The only sound way to come under Portuguese taxation is to genuinely move your residence and activity there, with real substance.
- No address or shell replaces a real presence: it is the economic reality that is examined.
The Belgian markers
Residence and specificity, in brief
Belgian tax-residence test
You are an « inhabitant of the Kingdom », hence a Belgian tax resident, if your home or the seat of your wealth is in Belgium — in which case you are taxable on your worldwide income.
Specificity: the Cayman tax
It is Belgium's anti-avoidance device: it taxes, by transparency, the income of certain low-taxed foreign legal constructions. The point to clarify upfront, especially for a holding or patrimonial activity.
Treaty and double taxation
The 1969 treaty (amended 1995) avoids double taxation, but neutralises neither the Cayman tax nor the reclassification risk if management stays Belgian.
Your process
Setting up from Belgium: what is prepared remotely, what requires a trip
As a resident of a European Union State, you prepare the essentials remotely, in French: only the individual's NIF is a fully remote step, via a tax representative. Signing the articles and opening the bank account, however, are done in person in Portugal during a trip to Lisbon. We coordinate the whole process from Portugal and organise that trip.
Obtain the NIF remotely
The NIF (individual Portuguese tax number) is the only fully remote step: it is obtained via a tax representative, without travelling. Not to be confused with the NIPC, the future company's tax number.
Frame the structure by video
Choice between ENI, Unipessoal Lda or Lda (capital from €1 per partner) and consistency with your Belgian situation, during a call in French — this preparation step is done remotely.
Sign the articles in person
Signing the articles is done in person in Portugal, during your trip to Lisbon. Right after incorporation, the partner lawyer files the RCBE (beneficial ownership register) once the Certidão Permanente is issued, i.e. 24 to 48 hours later.
Open the bank account at the branch
Opening the business account is done in person, at the branch, during that same trip: it is not a remote step and no video call replaces it. Accounting is then handled by a partner Contabilista Certificado.
To go further
Useful pages before you decide
Frequently asked questions
Belgian resident: what people ask me
- Can I set up a company in Portugal while remaining a Belgian resident?
- Yes, it is possible. The NIF is prepared remotely via a tax representative, but signing the articles and opening the bank account are done in person during a trip to Lisbon. And as long as you remain a Belgian tax resident, you stay taxable in Belgium on your worldwide income, and some income from a Portuguese structure may be caught by the Cayman tax. The operation is only sound if framed upfront with a tax adviser.
- Does the Cayman tax apply to my Portuguese company?
- It depends on the nature of the company. The Cayman tax mainly targets low-taxed patrimonial or passive constructions; a genuinely operational Portuguese company with economic substance is not in the same situation. The administration considers, however, that the Belgium-Portugal treaty does not stand in its way (circular 2024/C/79): this must be validated case by case by a tax adviser.
- Does the Belgium-Portugal treaty avoid double taxation?
- Yes, that is its purpose: the 1969 treaty (amended 1995) allocates taxing rights and prevents double taxation. It does not, however, neutralise the Cayman tax or the risk that the company is attached to Belgium if it is genuinely run there.
- Do I need to move to Portugal for this to be clean?
- The safest way to come under Portuguese taxation is to genuinely move your residence and activity there, with a real presence. Running it from Belgium remains conceivable with a registered address in Portugal and part of the activity justified locally, but a Portuguese company managed from Belgium with no substance on the ground exposes you to reclassification on place-of-effective-management grounds. Better to settle this before setting up.
Disclaimer
This page is for general information only; it does not constitute personalised legal, accounting or tax advice. The Belgian elements (Cayman tax, residence, treaty) are given with an indicative confidence level and are subject to change; they must be validated by a tax adviser before any decision. Business Portugal is a consultant in company formation and setup, not an accounting, tax or law firm: we guide you and connect you with the right partner. Book a meeting to frame your project.
Let's talk about your project, from Belgium
A first free conversation, with no commitment, by video and in French, to frame your Portuguese incorporation and, above all, your Belgian situation. If a tax adviser is needed, we connect you with the right partner.
No commitment · By video · Service in French · Lisbon, Portugal