Updated: 16 May 2026, 07:16 AM

Dual citizenship remains one of the most searched nationality topics in 2026 because several major jurisdictions have changed or clarified their rules. Germany’s nationality reform, which took effect on 27 June 2024, now generally accepts multiple citizenship, while in the United States dual citizenship remains legal even though the proposed Exclusive Citizenship Act of 2025 has drawn attention. Because nationality law often includes important exceptions, the safest way to understand dual citizenship in 2026 is country by country.

What is dual citizenship?

Dual citizenship means a person is legally recognized as a citizen of two countries at the same time. In practice, that can mean holding two passports, enjoying rights in both countries, and also being subject to legal obligations in both. Whether dual citizenship is allowed depends on the laws of each country involved, because one country may accept it while the other restricts or limits it. 

How to become a dual citizen?

There are several common ways to become a dual citizen:

• by birth in a country that grants citizenship by birthright
• through parents or ancestry
• through marriage in countries that offer a citizenship path to spouses
• through naturalization after meeting residence requirements
• through citizenship by investment in countries that operate such programs
• through long-term residence routes that can later lead to naturalization

One of the biggest 2026 examples is Germany. Since 27 June 2024, Germany has generally accepted multiple citizenship, and the standard residence period for naturalization was reduced from 8 years to 5 years. 

For investors, dual citizenship is often pursued through citizenship-by-investment programs or through residence-by-investment pathways that later lead to citizenship. Portugal’s residence-by-investment framework, for example, continues under the ARI system, but its focus has shifted away from the old mainstream real-estate route and toward qualifying categories such as scientific research, cultural support, and other approved investment options. 

Advantages of dual citizenship

Dual citizenship can offer wider travel flexibility, expanded work and residence rights, access to education and healthcare systems in more than one country, and stronger long-term family planning options. It can also make international business, relocation, and asset planning easier for globally mobile individuals. These benefits vary depending on the passports involved and the domestic rules of each country.

Disadvantages of dual citizenship

Dual citizenship can also create complexity. A dual national may face overlapping legal duties, possible tax exposure, military-service obligations in some jurisdictions, or limits on consular protection when in the country of their other nationality. It may also complicate security clearance, public office eligibility, or inheritance and family-law issues, depending on the countries involved. 

List of countries that allow dual citizenship in 2026

Many countries allow dual citizenship either broadly or in practice with only limited restrictions. A major 2026 update is that Germany now belongs in this category, because multiple citizenship is now generally accepted under its reformed nationality law. 

Countries commonly treated as allowing dual citizenship include the United States, Canada, the United Kingdom, France, Germany, Australia, New Zealand, Ireland, Portugal, Greece, Malta, Cyprus, Turkey, and many Caribbean citizenship-by-investment jurisdictions. However, not every “yes” is unconditional. Some countries allow dual citizenship in principle but still impose disclosure, military, tax, or nationality-retention rules. 

Important notes for key countries

• Germany: now generally accepts multiple citizenship. 
• Spain: should not be treated as an unrestricted yes. Spain generally allows dual citizenship only in specific legal situations and especially for nationals of Ibero-American countries, Andorra, the Philippines, Equatorial Guinea, and Portugal. For many other nationalities, renunciation rules still apply. 
• Netherlands: should not be treated as a simple no. The Dutch government says a person may hold Dutch citizenship plus one or more other citizenships, but depending on the situation may still need to choose. 

Last verified: May 2026. 

List of countries that generally restrict or do not normally permit dual citizenship

Some countries still generally restrict dual citizenship or do not normally permit it in ordinary naturalization cases. These include countries such as China, India, Japan, Singapore, Malaysia, Montenegro, and Bahrain, among others. But this category also needs careful reading because some countries make exceptions for birth, descent, marriage, or special cases. 

Important notes

• Montenegro: still belongs in the restrictive group for standard naturalization, because release from previous citizenship remains part of the legal framework. 
• Netherlands: if you keep it in this section, label it as restricted with exceptions, not as an absolute ban. 
• Estonia: should be handled carefully and verified directly from current law before being presented as a simple yes/no entry. 

Countries that allow dual citizenship only by descent

Some countries are significantly more flexible about dual citizenship through ancestry than through ordinary naturalization. In practice, that means a person may be allowed to hold two citizenships when claiming nationality by descent, even if the same country is stricter for adult naturalizing applicants.

Examples often discussed in this category include countries such as Italy, Ireland, Poland, Hungary, Croatia, Greece, Latvia, Bulgaria, Slovakia, Luxembourg, and Lithuania, depending on the legal route and the applicant’s circumstances. Germany should no longer be grouped here as a “descent only” example because it now generally accepts multiple citizenship more broadly. 

Last verified: May 2026. 

2026 dual citizenship policy updates: what changed and what’s coming

Germany — multiple citizenship now generally accepted

Germany’s nationality reform entered into force on 27 June 2024. The German Federal Ministry of the Interior states that multiple citizenship is now generally accepted, and the standard naturalization residence period was reduced from 8 years to 5 years. This remains one of the most important dual-citizenship developments influencing 2026 search demand. 

US Exclusive Citizenship Act of 2025 — proposed bill, not current law

The proposed Exclusive Citizenship Act of 2025 has generated attention in the US, but it is still only proposed legislation. Current official US government guidance continues to state that Americans can hold dual nationality. As of May 2026, dual citizenship remains legal in the United States. 

Argentina — new investment-based citizenship route announced

Argentina created a new legal pathway tied to relevant investment under Decree 524/2025. The legal basis now exists, but detailed qualifying-investment criteria remain important to verify before presenting Argentina as a fully mature citizenship-by-investment program in the same way as established Caribbean programs. 

UAE — dual nationality remains selective

The UAE does not operate a broad public dual-citizenship scheme. Official UAE guidance states that specific categories of foreigners, along with spouses and children in some cases, may acquire Emirati nationality and retain their original nationality. That makes UAE dual nationality highly selective and state-controlled, not a standard open-access route. 

Dual citizenship with the US

The United States allows dual nationality in practice. Official US government guidance states that a US citizen may naturalize in another country without automatically losing US citizenship, and that US dual nationals owe allegiance to both countries. That means Americans can legally hold a second nationality, although it can create practical complications involving taxation, military obligations abroad, and limits on consular protection in certain situations. 

2026 update: Exclusive Citizenship Act of 2025

A bill introduced in the United States proposes to restrict dual citizenship for Americans. As of May 2026, it remains proposed legislation, and dual citizenship is still legal under current US policy. If you already hold or are considering a second nationality, this is something to monitor, but it should not be presented as current law. 

Countries that can generally be described as allowing dual citizenship with the US include Germany, Canada, the UK, France, Ireland, Portugal, Australia, New Zealand, Malta, Cyprus, and many Caribbean jurisdictions, subject to each country’s domestic rules. Germany should now be included here because it generally accepts multiple citizenship following the 2024 reform. 

For Russia, careful wording is essential. Russian law permits Russian citizens to acquire another citizenship without automatically losing Russian citizenship, but there are notification obligations and important practical implications for travel and compliance. 

Benefits of US dual citizenship

US dual citizenship can offer the right to live, work, and often own property in another country while retaining US citizenship. It can also improve family mobility, business planning, and long-term residence options abroad. For internationally mobile families, it may make education, relocation, and succession planning significantly easier. 

Process of obtaining dual citizenship

The process depends entirely on the route. Citizenship by descent usually requires proving lineage and submitting civil records. Naturalization usually requires years of lawful residence, language ability, and integration criteria. Marriage-based routes often require a qualifying marriage and residence period. Investment-based routes depend on program rules, due diligence, and source-of-funds checks. In every case, applicants need to confirm that both countries involved will recognize the final nationality outcome. 

Requirements for dual citizenship

There is no universal rule. Requirements may include residence periods, language testing, clean criminal records, proof of legal income, renunciation rules, or official approval of nationality retention. Some countries are generous through descent but stricter for naturalization, while others allow multiple nationality broadly. 

Drawbacks of US dual citizenship

US dual citizenship can involve continuing US tax responsibilities, possible legal obligations in both countries, difficulty accessing consular help in the country of your other nationality, and extra compliance burdens. It may also affect military service, government employment, or security-clearance eligibility, depending on the second country involved. 

A newer concern is legislative uncertainty. While the proposed Exclusive Citizenship Act of 2025 is not law, it shows that dual citizenship can become a political issue in the United States. Dual nationals should keep an eye on future developments. 

The easiest way to get dual citizenship

For most people, the easiest route is usually citizenship by descent if they already qualify through a parent, grandparent, or ancestral line. That path is often cheaper and more predictable than naturalization or investment. For those without ancestry claims, the most practical route is often long-term residence leading to naturalization, depending on the country. 

Which countries grant citizenship by investment?

The best-known citizenship-by-investment jurisdictions remain St. Kitts and Nevis, Antigua and Barbuda, Dominica, Grenada, Saint Lucia, Turkey, Egypt, Malta under its own legal framework, and Vanuatu, depending on current program status and due-diligence rules. Argentina is a notable new 2026 development because Decree 524/2025 created a legal pathway for foreigners making relevant investments to apply for citizenship, but it should still be described carefully until implementation details are fully settled. 

Which countries grant residence permit or permanent residence by investment?

Many countries offer residence-by-investment routes rather than direct citizenship. These programs can lead to long-term residence and, in some jurisdictions, eventual naturalization. Portugal remains one of the best-known examples, although its current structure differs from the older real-estate-focused model that many readers still remember. 

What duties and rights arise when obtaining a second citizenship?

A second citizenship can create voting rights, residence rights, work rights, and access to public systems in another country. It can also create extra obligations, such as tax reporting, military service, or compliance with nationality-disclosure rules. The exact balance of rights and duties depends on the two countries involved. 

Key takeaways about countries that allow dual citizenship

Dual citizenship is increasingly accepted worldwide, but it is still not universally allowed. Germany is the clearest major 2026 update because multiple citizenship is now generally accepted there. The United States still allows dual nationality despite debate around proposed legislation. Countries like Spain and the Netherlands require more nuanced treatment because the answer depends on the legal route and the applicant’s original nationality.

What is the difference between citizenship and permanent residency?

Citizenship is a full legal membership in a state and usually includes a passport, political rights, and permanence that residence status does not. Permanent residency allows a person to live in a country long-term, but it is not the same as nationality and often comes with more limits. In some countries, permanent residence can be a pathway to later citizenship, but not always. 

Frequently asked questions

Does Germany allow dual citizenship in 2026?

Yes. Germany’s nationality reform took effect on 27 June 2024, and multiple citizenship is now generally accepted. 

Will the US ban dual citizenship?

Not at present. A proposal has attracted attention, but official US guidance still states that Americans can hold dual nationality. As of May 2026, dual citizenship remains legal in the United States. 

Does Russia allow dual citizenship?

Russia allows Russian citizens to hold another citizenship, but there are legal notification obligations and important practical consequences that should be reviewed carefully before proceeding. 

Does the UAE allow dual citizenship?

Only in limited, selective cases. Official UAE guidance says specific categories of foreigners, and in some cases their spouses and children, may acquire Emirati nationality while retaining their original nationality. It is not a broad public program.

Is the UAE passport powerful?

Yes. Henley describes its index as based on IATA data and updated monthly, and recent reporting around the 2026 ranking places the UAE among the world’s strongest passports. Because rankings can shift during the year, it is best to phrase this as “among the world’s strongest passports” unless you are updating the exact score directly from the latest release at the time of publication.