Portugal dual citizenship: does your country allow it?

Portugal will not ask you to give anything up. Its nationality law has no renunciation requirement on any route, and it only takes Portuguese nationality away from someone who declares they don't want it. So whether you can end up with two passports is decided by the other side: the law of the country you already belong to. This guide goes through that side country by country, and every row is read from that country's own statute, not from a forum thread.

What a second passport does not change is the Portuguese application itself. The requirements are the same for everyone, language included — see the two language and knowledge exams a citizenship application can involve.

What Portugal says about holding two nationalities

Three points cover it. None of the ways to become Portuguese — residence, marriage, descent — asks you to drop your existing nationality. You only lose Portuguese nationality by declaring you don't want it; living abroad or holding another passport does nothing. And when the two collide, Portuguese law settles it bluntly:

In practice that means you are simply Portuguese to every Portuguese authority. Your British or American passport does not give you a foreigner's status you can fall back on inside Portugal. Most countries apply the same logic in reverse to their own nationals.

Which countries take your original nationality away

The table covers the countries that come up most in searches about Portuguese dual citizenship, in English and in Portuguese. A country is only listed if we could read its law in the official text; anything missing is missing because the source would not load, not because the answer is obvious.

British and Portuguese: yes, you can hold both

This is the question we get most, so it goes first. The British Nationality Act does not link losing British citizenship to acquiring another one. The only voluntary way out is a declaration of renunciation, which the Home Secretary registers — and it will not register one unless you will still hold another nationality afterwards. Becoming Portuguese, on its own, costs you nothing on the British side.

American and Portuguese: intent is the whole test

US law does list «obtaining naturalization in a foreign state» among the acts that can end US nationality. But the list only applies when the act is done voluntarily and «with the intention of relinquishing United States nationality». Naturalising in Portugal because you live here, without that intent, does not cost you your US citizenship.

India: automatic loss, and the OCI card

Indian law is the most direct of the group. A citizen who «voluntarily acquires» the citizenship of another country ceases to be Indian «upon such acquisition». There is no application, no decision and no grace period in which to choose.

Timing matters here. Portuguese nationality takes effect on the date it is registered, not the date you apply — so that registration date is the day your Indian citizenship ends. Plan anything that needs an Indian passport before then.

What India offers former citizens instead is registration as an Overseas Citizen of India. It is not citizenship: the same Act expressly withholds voting, elected office and public employment. But it keeps a legal tie to the country, with whatever rights the Indian government attaches to the status — and it is the step to prepare before your Portuguese registration comes through.

China and Nepal: the same rule, worded differently

China's law opens by stating that the People's Republic «does not recognize dual nationality for any Chinese national». A Chinese national who has «settled abroad» and acquires another nationality «of his own free will» loses Chinese nationality automatically — which is exactly the position of someone who lives in Portugal and naturalises here.

Nepal's Act says a citizen who voluntarily acquires a foreign citizenship «shall automatically lose the citizenship of Nepal». The text we read is the 2006 English version held in the ILO's legislation database. The Act has been amended since, so check the current wording with the embassy before relying on it.

The Netherlands: lost — unless you are married to a Portuguese

The Dutch default is loss on voluntarily acquiring another nationality. The same provision switches it off in three situations:

• you were born in the new country and live there when you acquire it;
• you lived there for at least five uninterrupted years before turning 18;
• you are married to someone who holds that nationality.

So a Dutch national married to a Portuguese citizen, applying through the marriage route, keeps both. A single Dutch national applying after years of residence does not.

Dual Dutch nationals also hear about a thirteen-year rule: an adult who lives outside the Netherlands for thirteen uninterrupted years can lose Dutch nationality. The same article leaves out the territory where the EU Treaty applies, and Portugal is part of it. Living here does not start that clock.

Germany and France

Germany used to strip nationality from anyone who took another one on their own application. The 2024 nationality reform repealed that rule, and since June 2024 becoming Portuguese no longer costs a German their German citizenship. If you naturalised somewhere else before then, your position is different and worth checking separately.

France only removes French nationality from an adult living abroad who takes another one if they «expressly declare» that they want to lose it. Without that declaration, you keep both.

How to read your own country's law if it is not listed

If your country is not in the table, the answer is in its nationality statute, and it nearly always comes down to three questions. Is loss automatic («shall cease», «automatically lose») or does it need a declaration or application from you? Are there exceptions — marriage, birth in the other country, childhood residence? And from when does it run — acquisition, registration, a decision? Answer those three from the official text and you will know more than most summaries online, which tend to repeat a rule that changed years ago.

Countries do change. Germany and Brazil both moved in the last three years, both towards letting people keep their nationality. An undated summary about your country is worth little; the consolidated statute on your government's own site is worth everything.

The reverse: giving up Portuguese nationality

If you ever need to choose — say your home country will only take you back without another nationality — Portuguese law lets someone who holds another nationality leave by declaration. It is a door that only exists for dual nationals, so nobody becomes stateless by using it. The procedure and cost are in our guide on when Portuguese nationality can be lost.

What to do before you apply

If your country ends your citizenship automatically, the choice is real and it is yours. Settle anything that depends on the old passport — property, inheritance, bank accounts, a pending visa — before the Portuguese registration date, and for India, prepare the OCI application.

If your country lets you keep it, there is nothing to notify and nothing to file to «protect» it. Use each passport in its own country.

Either way, the Portuguese side does not change with the passport you hold: the requirements are those of your route, and knowledge of the language and of Portugal is part of them. To see what kind of questions that last part involves, our free practice quiz takes about ten minutes.