Portugal Dual Citizenship: Requirements, Benefits, and How to Apply

Application Process > Citizenship

Updated: October 15, 2026

Portugal permits dual citizenship; you can acquire Portuguese citizenship and retain your current nationality. This can create new opportunities in Europe for Americans, British citizens, Canadians and many other foreign nationals while protecting their rights at home.

But dual citizenship also presents practical questions. Can I travel with two passports? Are you going to pay taxes in both countries? Are there any limitations?

This guide will tell you about dual citizenship in Portugal, which countries recognize dual citizenship and what you should know before applying.

Does Portugal Allow Dual Citizenship?

Yes. Portugal recognises dual and multiple citizenship. You can hold Portuguese nationality alongside another nationality, provided the laws of your other country allow it.

Under Article 27 of Portugal’s Nationality Law, when someone holds Portuguese nationality alongside another nationality, Portuguese nationality takes precedence under Portuguese law.

For example, someone who becomes both American and Portuguese will generally be treated as a Portuguese citizen by Portuguese authorities.

There is no separate application for dual citizenship. You apply for Portuguese nationality through an eligible legal route and, if your original country permits it, retain both nationalities.

Which Countries Allow Dual Citizenship With Portugal?

Many countries allow their citizens to acquire Portuguese nationality without automatically losing their original citizenship.

Country	Dual Citizenship With Portugal
United States	Allowed
United Kingdom	Allowed
Canada	Allowed
Brazil	Allowed
Australia	Allowed
France	Allowed
Germany	Allowed
India	Generally not allowed

For instance, an American who becomes a citizen of Portugal can generally retain both passports. But, generally, an Indian citizen can not continue to be an Indian citizen if he voluntarily acquires Portuguese nationality.

Different countries have different rules . Some governments require people to notify them , or restrict certain classes of citizens .

Check the rules relating to nationality for your current country before you apply – especially if you have a nationality that limits dual citizenship.

Can Americans Have US and Portuguese Dual Citizenship?

Yes. The United States permits its citizens to hold another nationality, including Portuguese citizenship.

An American who becomes Portuguese does not normally lose US citizenship simply by acquiring a second nationality.

This can be particularly attractive for Americans with Portuguese parents or grandparents, those married to Portuguese citizens or people planning to establish residency in Portugal.

For example, an American who obtains Portuguese citizenship through a Portuguese parent can continue living in the United States while holding the right to relocate to Portugal or another EU country.

However, American citizens remain subject to US legal and tax obligations, even when living abroad.

Do Dual Citizens Pay Taxes in Both Countries?

Having Portuguese citizenship doesn’t mean you will be a Portuguese tax resident.

In Portugal, the rule is that a person’s individual tax residency is determined by their place of residence and residential situation, rather than by nationality alone.

Two common factors are spending more than 183 days in Portugal during a relevant 12-month period or maintaining accommodation under circumstances indicating an intention to occupy it as a habitual residence.

Consider two examples.

An American living in the US: If they become Portuguese citizens but continue to live and work in the US, Portuguese nationality alone will not usually make them a Portuguese tax resident.

An American moving to Portugal: If they become a Portuguese tax resident they may have Portuguese tax requirements and US’ tax reporting requirements too.

Unlike Portugal, the United States generally taxes its citizens on income earned worldwide, regardless of where they live, although exclusions, foreign tax credits and treaty provisions can help prevent double taxation.

For British, Canadian and many other dual citizens, tax obligations usually depend primarily on tax residence and applicable domestic rules.

Dual citizenship and dual tax residency are different concepts. Anyone planning to relocate should review their circumstances with a qualified tax adviser.

Can You Travel With Two Passports?

Yes. A dual citizen of Portugal can hold both a Portuguese passport and a passport from his other country of nationality.

But which passport you use matters.

For example, a dual citizen of the US and Portugal should normally use his or her American passport when entering or leaving the US, as required by law in the US.

They can prove that they are Portuguese citizens when they enter Portugal, using their Portuguese passport or Citizen Card.

British-Portuguese dual citizens should also check the UK documentation requirements before travelling to the United Kingdom.

When travelling between countries, carry both valid passports where appropriate and ensure that your airline booking and travel documents are consistent.

For further information about Portuguese passport applications and travel rights, read our Portuguese Passport Guide.

How to Obtain Portuguese Dual Citizenship

Portugal does not offer a separate dual citizenship application. Applicants shall be required to meet the conditions for Portuguese nationality by one of the means provided by law.

The most popular ways to obtain Portuguese citizenship are by descent through a parent or grandparent, by marrying a Portuguese citizen or by naturalization after the required period of legal residence.

Following changes introduced in May 2026, the general residence requirement for new naturalisation applications is seven years for EU and Portuguese-speaking country nationals and ten years for most other foreign nationals.

These residence periods do not apply to every nationality route. For example, someone applying through a Portuguese parent may qualify without ever having lived in Portugal.

The documents, government fees and language requirements depend on the route used.

For a detailed explanation of eligibility and the application process, read our Portuguese Citizenship Guide.

What Our Clients Say

Advantages and Disadvantages of Portuguese Dual Citizenship

The biggest advantage of Portuguese dual citizenship is the protection of rights in two countries.

As a Portuguese citizen you will also be an EU citizen, with the right to live and work in other EU Member States according to the applicable European rules.

This can be employment, education, retirement and family relocation opportunities.

For example, a dual citizen of Canada and Portugal could be able to stay resident in Canada and then choose to move to Spain or Germany without applying for the residence visa that is required of Canadian nationals.

Under certain circumstances Portuguese nationality can also be transmitted to children, which may also create similar opportunities for future generations.

But having two nationalities can mean additional responsibilities.

Dual citizens might have to file tax returns, do military or civic duty in some countries, and have limited diplomatic protection if they are in a country where they are also a citizen.

These considerations do not necessarily outweigh the benefits, but should be understood prior to application.

Getting Help With Portuguese Dual Citizenship

Portugal Residency Advisors helps international clients with Portuguese nationality applications including citizenship by descent, marriage and legal residency.

We can evaluate your eligibility, tell you what documents you will need and help you prepare your application.

If you’re thinking about Portuguese citizenship but want to retain your current nationality, reach out to Portugal Residency Advisors for a look at your options.

Your Questions Answered

Can I have dual citizenship in Portugal and the USA?

Yes. Dual citizenship is allowed in both Portugal and the United States. Americans who acquire Portuguese nationality can generally retain their US citizenship.

Does Portugal require me to renounce my original citizenship?

No. The rule in Portugal is that the applicant need not renounce their existing nationality. But the other country might have restrictions.

Can I hold both British and Portuguese passports?

Yeah The United Kingdom and Portugal permit dual nationality, so eligible individuals can hold both passports.

Will I pay Portuguese taxes if I have dual citizenship?

Not simply because you hold Portuguese nationality. Portuguese tax obligations generally depend on tax residency and the nature of your income. US citizens may also have continuing US tax reporting obligations.

Can my children inherit Portuguese dual citizenship?

Potentially, yes. Children of Portuguese citizens may acquire Portuguese nationality, even if they are born outside of Portugal.