You want a second passport. Maybe you are moving to Europe, maybe you want your kids to have options, maybe you just want the security of knowing you can live somewhere else. Whatever the reason, the first question is always the same: does my country even allow this?
The answer depends on where you are from and where you want to go. About 123 countries allow dual citizenship. Around 39 do not. And a bunch sit somewhere in the middle with conditions and exceptions that make the rules confusing.
Here is the full breakdown.
Countries That Allow Dual Citizenship
Most of the countries people actually want to move to allow dual citizenship. That is the good news.
North America
The United States, Canada, and Mexico all allow dual citizenship. The US does not require you to give up your American passport when you take another nationality. Canada is the same. Mexico changed its rules in the late 1990s and now permits it too.
Europe
The majority of European countries allow dual citizenship. This includes the UK, France, Portugal, Germany (since the 2024 reform), Italy, Ireland, Belgium, Sweden, Finland, Greece, Hungary, Poland, Romania, and many others.
South America
Brazil, Argentina, Colombia, Chile, Peru, and most of South America allow dual citizenship.
Oceania
Australia and New Zealand both allow it.
Middle East
Turkey allows dual citizenship and has become a popular route for citizenship by investment. Israel also allows dual citizenship.
Caribbean
Most Caribbean nations allow dual citizenship, including several that offer citizenship by investment programmes like Grenada, Dominica, St Kitts and Nevis, and Antigua and Barbuda.
The pattern is clear: the countries most people want to move to are generally fine with you holding two passports.
Countries That Ban Dual Citizenship
This is where it gets tricky. If you are a citizen of one of these countries and you take a second citizenship, you may lose your original nationality automatically.
Asia
China, Japan, India, Singapore, Indonesia, Malaysia, Myanmar, Nepal, and South Korea (with some exceptions for men who have completed military service) all restrict or ban dual citizenship. If you are Indian and you become a Portuguese citizen, India does not let you keep your Indian passport. India does offer an OCI (Overseas Citizen of India) card which gives you some rights, but it is not citizenship.
Middle East
Saudi Arabia, UAE, Qatar, Kuwait, Bahrain, and Oman generally do not allow dual citizenship. Iran does not recognise dual citizenship at all and will treat you as exclusively Iranian if you enter the country, regardless of what other passport you hold.
Africa
Several African countries restrict it, including Cameroon, Tanzania, Ethiopia (though Ethiopia recently introduced a yellow card system for diaspora members), Eritrea, and the Democratic Republic of Congo.
Europe
Very few European countries ban dual citizenship outright. Austria is the most notable one, requiring you to renounce your previous citizenship when you naturalise. Andorra, Monaco, and San Marino also restrict it.
The Americas
Cuba and Suriname do not allow dual citizenship.
If your home country bans dual citizenship, it does not necessarily stop you from getting residency or even citizenship elsewhere. It just means you may have to give up your original passport to do it. That is a much bigger decision, and one worth talking to an immigration lawyer about before you commit.
European Countries: The Full Picture
Since most of our clients are looking at European residency and eventual citizenship, here is a closer look at the European landscape.
Countries that fully allow dual citizenship: Portugal, France, UK, Ireland, Italy, Germany (since June 2024), Belgium, Sweden, Finland, Denmark, Greece, Hungary, Poland, Romania, Czech Republic, Cyprus, Luxembourg, Malta, Latvia.
Countries with restrictions: Austria requires renunciation of your previous citizenship in most cases. The Netherlands generally requires renunciation but has significant exceptions (spouses of Dutch nationals, nationals of countries that do not allow renunciation, and several other categories). Estonia has some limitations for naturalised citizens.
Countries with long residency requirements: Spain requires 10 years of legal residency before you can apply for citizenship (though it drops to just 2 years for nationals of Latin American countries, Portugal, the Philippines, and some other historically connected nations). Germany's 2024 reform was a big deal — it now generally allows dual nationality for people naturalising, which has made it a much more attractive destination for professionals who do not want to lose their original passport.
How Long Does It Take to Get Dual Citizenship?
Residency is step one. Citizenship comes later. Here is how long you need to live somewhere before you can apply.
| Country | Years to Citizenship | Language Requirement | Key Notes |
|---|---|---|---|
| Portugal | 5 years | A2 Portuguese | One of the fastest paths to EU citizenship |
| Germany | 5 years | B1 German | Reduced from 8 years in 2024 reform |
| France | 5 years | B1 French | Can also grant via military service |
| Ireland | 5 years | None | Also offers citizenship by descent |
| Belgium | 5 years | Varies by region | One of the more straightforward processes |
| UK | 6 years | B1 English | 5 years + 1 year indefinite leave |
| Estonia | 8 years | B1 Estonian | Longer path than most |
| Spain | 10 years | A2 Spanish | Just 2 years for Latin American nationals |
| Italy | 10 years | B1 Italian | Popular for citizenship by descent |
Countries With Conditions and Exceptions
Some countries do not fit neatly into “allow” or “ban.” They sit in a grey area.
The Netherlands officially requires renunciation but has so many exceptions that many people keep both. If your home country will not let you renounce (like Morocco or some other nations), the Netherlands does not force you. Spouses of Dutch nationals are also exempt.
Spain generally requires renunciation when you naturalise, but has bilateral agreements with about 25 countries (mostly Latin American) that let citizens of those countries keep both passports. If your nationality is not on that list, you formally renounce, though your home country may not recognise the renunciation.
South Korea has complex rules that differ based on how you acquired citizenship, your military service status, and your age.
Japan technically requires people to choose one citizenship by age 22, but enforcement is weak and many Japanese dual nationals quietly hold both passports well into adulthood.
Best Countries for Dual Citizenship if You Want EU Access
If your goal is an EU passport that lets you live and work freely across 27 countries, here are the strongest options.
Portugal
Five years to citizenship, dual citizenship allowed, clear visa options (D7, D8, D2), and a relatively straightforward A2 language requirement. The climate, lifestyle, and cost of living make the five-year wait genuinely enjoyable.
Germany
Now a serious contender after the 2024 reform. Five years to citizenship, dual nationality allowed, and Europe's strongest economy with excellent healthcare and education. The B1 German requirement is more demanding but manageable.
Ireland
Ideal if you have Irish ancestry. Citizenship by descent does not require you to live in Ireland at all if your parent was an Irish citizen. Grandparent route available via the Foreign Births Register.
Italy
Best option if you have Italian heritage. Citizenship by descent (jure sanguinis) can go back multiple generations with no time limit in many cases. No residency requirement.
France
Citizenship after 5 years with B1 French. Allows dual citizenship and has a strong global passport.
What Changed Recently
A few significant shifts in 2024 and 2025 worth knowing about.
Germany's Dual Citizenship Reform (June 2024)
Germany now allows dual nationality for people naturalising. Previously, most applicants had to renounce. The residency requirement also dropped from 8 to 5 years (or 3 years with exceptional integration). This has made Germany substantially more attractive.
The US Exclusive Citizenship Act (December 2025)
Congress introduced a bill that would bar US citizens from holding multiple nationalities. It has not passed and faces significant legal and political hurdles. But it signals growing political interest in restricting dual citizenship in the US.
Portugal's Processing Improvements
AIMA (Portugal's immigration agency) has been working to reduce processing backlogs that plagued the system in 2023 and 2024. Wait times are still long but trending in the right direction.
Frequently Asked Questions
Can I hold three or more citizenships?
Yes, in many cases. There is no international limit on the number of citizenships you can hold. It depends entirely on each country's individual rules. If all three countries allow dual citizenship, you can hold all three. Some people hold four or five passports. The practical limit is the complexity of managing tax obligations and reporting requirements across multiple jurisdictions.
If my country bans dual citizenship, can I still get residency in Europe?
Absolutely. Residency and citizenship are different things. You can live in Portugal for years on a D7 or D8 visa without becoming a Portuguese citizen. If you eventually want citizenship and your home country does not allow dual nationality, you would need to decide whether to renounce your original citizenship. But residency alone does not require that choice.
Does the US allow dual citizenship?
Yes. The US fully recognises dual citizenship. You can become a citizen of another country without losing your American passport. The catch is that US citizens owe taxes on worldwide income regardless of where they live, which creates a significant ongoing obligation. You also need to file FBAR and FATCA reports on foreign accounts and assets.
Which country gives citizenship the fastest?
Through investment programmes, some Caribbean countries like St Kitts and Nevis, Dominica, and Grenada can grant citizenship in 2 to 6 months. Turkey offers citizenship by investment in about 3 to 6 months. In Europe through residency, Portugal at 5 years and Germany at 5 years are the fastest mainstream options.
Can my children automatically get dual citizenship?
Often yes. Many countries grant citizenship by descent. If you are a US citizen and your child is born in Portugal, the child can hold both US and Portuguese citizenship. The rules vary by country. Some grant citizenship based on where you are born (jus soli), others based on your parents' nationality (jus sanguinis), and some use a combination.
