Countries That Allow Dual Citizenship in 2026: A Comprehensive Guide for Investment Migration

Last updated: March 2026

📋 At a Glance: In this increasingly interconnected and developed world, obtaining dual citizenship plays a crucial role and comes with many advantages starting from wider global mobility and ending with expanded business opportunities. This guide explores the countries that allow dual citizenship, the paths to acquiring it, and the key factors to keep in mind.

In this increasingly interconnected and developed world, obtaining dual citizenship plays a crucial role and comes with many advantages starting from wider global mobility and ending with expanded business opportunities. This guide explores the countries that allow dual citizenship, the paths to acquiring it, and the key factors to keep in mind.

What Is Dual Citizenship and Why Does It Matter in 2026?

Dual citizenship — also referred to as dual nationality — is the legal status in which an individual is simultaneously recognised as a citizen of two sovereign nations. Each country retains its own rules governing whether it will permit its citizens to hold nationality elsewhere, which means that the landscape of countries that allow dual citizenship is both varied and constantly evolving.

For high-net-worth individuals, entrepreneurs, and internationally mobile families, dual citizenship is far more than a travel convenience. It represents a fundamental element of global wealth planning. A second passport can protect against political instability, provide access to superior healthcare and educational systems, open doors to new business jurisdictions, and secure a future for the next generation in an increasingly uncertain world.

In 2026, demand for second citizenship has reached an all-time high. Factors including geopolitical tensions, shifting tax regimes, and the growing desire for lifestyle optionality have driven a record number of applications across the world's leading citizenship by investment programmes. Understanding which countries allow dual citizenship — and how to obtain it — has therefore never been more relevant.

Countries That Allow Dual Citizenship: A Global Overview

The permissibility of dual citizenship varies enormously by country. Below is a structured overview of the key categories:

Countries That Fully Permit Dual Citizenship

These nations place no restriction on their citizens holding passports from other countries. They include:

• United Kingdom — The UK imposes no restrictions on dual nationality and is a frequent destination for investment migrants seeking European access and stability.
• United States — While the US does not formally encourage dual citizenship, it is legally permitted and widely held. Naturalised citizens are not required to renounce other nationalities.
• Canada — Canada actively permits dual citizenship, making it a popular destination for families seeking long-term settlement.
• France — One of Europe's most open jurisdictions with respect to nationality, France fully recognises dual citizenship.
• Australia — Australia permits dual citizenship for its own nationals and accepts those who hold other passports.
• Ireland — Irish citizenship is particularly sought-after for its EU access, and Ireland places no dual nationality restrictions on its citizens.
• New Zealand — Similarly open to dual nationality, New Zealand is increasingly popular among globally mobile families.
• Portugal — Via its Golden Visa programme (now restructured), Portugal remains a pathway to EU citizenship and fully permits dual nationality.
• Malta — Malta's exceptional direct investment programme grants EU citizenship and the country places no restriction on dual nationality.
• Caribbean CBI nations — Countries including St Kitts & Nevis, Antigua & Barbuda, Dominica, Grenada, and St Lucia all permit dual citizenship and operate formal citizenship by investment programmes.

Countries With Conditional or Limited Dual Citizenship

Some nations permit dual citizenship only in specific circumstances — for example, by descent, through marriage, or in cases where renunciation of the original nationality would cause undue hardship. These include Germany (with limited exceptions post-2024 reform), Spain (which permits dual nationality with certain Latin American countries by treaty), and Japan (which generally requires a choice upon adulthood).

Countries That Do Not Permit Dual Citizenship

Several significant nations, including China, India, Saudi Arabia, and the United Arab Emirates, do not formally recognise dual citizenship. Citizens of these countries who wish to obtain a second passport via investment migration must do so carefully, understanding the implications under their home country's laws. Professional advice — such as that provided by Mirabello Consultancy — is essential in these scenarios.

Investment Routes to Dual Citizenship: The Leading Programmes in 2026

For those who do not qualify by birth or descent, citizenship by investment offers the most direct and reliable route to a second passport in a country that allows dual nationality. Below are the most sought-after programmes for investment migration clients in 2026. You can explore a full comparison in our guide to the best citizenship by investment programmes.

St Kitts & Nevis — The World's Oldest CBI Programme

Established in 1984, the St Kitts & Nevis Citizenship by Investment Programme is the world's longest-running and most respected scheme. It offers a St Kitts passport granting visa-free or visa-on-arrival access to approximately 157 countries, including the Schengen Area, the United Kingdom, and Singapore.

• Minimum investment: USD 250,000 via the Sustainable Island State Contribution (SISC) for a single applicant
• Real estate option: From USD 400,000 in approved developments
• Processing time: 45–60 days via the Accelerated Application Process; 4–6 months via the standard route
• Dual citizenship: Fully permitted
• Physical residency: Not required

Learn more in our detailed St Kitts & Nevis citizenship by investment guide.

Antigua & Barbuda — Excellent Value for Families

The Antigua & Barbuda Citizenship by Investment Programme is particularly well-regarded for families, offering some of the most competitive pricing for multi-dependant applications. The Antigua passport provides access to approximately 150 countries visa-free or on arrival, including the UK and Schengen Area.

• Minimum investment: USD 230,000 via the National Development Fund for a family of four
• Real estate option: From USD 300,000 in approved properties
• Processing time: 3–6 months
• Dual citizenship: Fully permitted
• Physical residency: Five days within the first five years of citizenship

Malta — The EU Citizenship Pathway

Malta's Granting of Citizenship for Exceptional Services by Direct Investment (MEIN) programme remains the most prestigious route to European Union citizenship via investment. A Maltese passport grants visa-free access to over 185 countries and full EU rights to live, work, and study across all 27 member states.

• Minimum investment: EUR 600,000 contribution (after 36 months of residency) or EUR 750,000 (after 12 months of residency), plus EUR 10,000 charitable donation and a property purchase or lease
• Processing time: 12–36 months depending on the residency pathway chosen
• Dual citizenship: Fully permitted
• Physical residency: Required during the qualifying residency period

Explore our full breakdown in our Malta citizenship by investment guide.

Grenada — The E-2 Treaty Advantage

Grenada is uniquely positioned among Caribbean CBI programmes because it holds a bilateral E-2 Treaty Investor Visa agreement with the United States. This means Grenadian citizens can apply for US E-2 visas — a significant advantage for clients from countries such as India, China, and Russia that do not have their own E-2 treaties with the United States.

• Minimum investment: USD 235,000 via the National Transformation Fund for a family of four
• Real estate option: From USD 270,000
• Processing time: 4–6 months
• Dual citizenship: Fully permitted

Eligibility Requirements: What Applicants Typically Need

Whilst eligibility criteria differ between programmes, the following requirements are common across most reputable citizenship by investment jurisdictions:

• Age: Main applicants must typically be aged 18 or over. Dependants can be included from birth.
• Clean criminal record: A clear background with no criminal convictions is universally required. All applicants undergo thorough due diligence checks.
• Source of funds: Applicants must demonstrate that their investment capital has been obtained through legitimate means. Full documentation of wealth and source of funds is mandatory.
• Good health: Many programmes require applicants to be in good health and free from communicable diseases.
• Investment capability: Proof of sufficient funds to meet the minimum investment threshold plus government fees and professional costs.
• No sanctions: Applicants must not be subject to international sanctions or be nationals of sanctioned states.

It is worth noting that due diligence standards have strengthened significantly in recent years. Leading programmes now conduct multi-tier background checks through internationally recognised intelligence agencies. Working with an experienced consultancy such as Mirabello ensures your application is prepared to the highest possible standard before submission. Contact our team today for a confidential assessment of your eligibility.

The Application Process: Step by Step

Whilst the precise process varies by programme, a typical citizenship by investment application follows these stages:

1. Initial consultation and programme selection — Mirabello's advisers assess your personal circumstances, objectives, and passport requirements to recommend the most suitable programme.
2. Due diligence and document preparation — A comprehensive document pack is compiled, including identification, financial statements, professional references, police clearances, and proof of investment funds.
3. Investment structuring — The investment vehicle is selected and structured (real estate purchase, government fund contribution, or approved enterprise), and funds are placed in escrow where required.
4. Submission to the relevant citizenship authority — The completed application is formally submitted to the programme's governing authority for review.
5. Government due diligence — The authority conducts its own background checks, which may take several weeks to months depending on the programme.
6. Approval in principle — Upon successful due diligence, the applicant receives conditional approval pending completion of the investment.
7. Investment completion — Funds are released or the real estate transaction is finalised.
8. Oath of allegiance (where required) — Some programmes require a brief visit to the country to take an oath of loyalty.
9. Passport issuance — The new passport is issued and delivered, typically within a few weeks of final approval.

Timeline and Costs: What to Expect

Understanding the full cost picture — beyond the headline investment figure — is essential for proper planning. Total costs typically include the core investment, government processing fees, due diligence fees, professional advisory fees, and dependant surcharges. Below is a representative summary:

• Caribbean CBI programmes: Total costs for a single applicant typically range from USD 150,000 to USD 500,000 depending on the programme and investment route chosen. Processing times range from 45 days to 6 months.
• Malta MEIN: Total costs for a single applicant (12-month residency route) begin from approximately EUR 850,000–EUR 1,000,000 when all fees, the property requirement, and the charitable contribution are included. Processing takes 12–14 months on the fast-track route.
• Portugal Golden Visa (path to citizenship): Investment thresholds begin from EUR 250,000 (investment funds route). Citizenship can be applied for after five years of legal residency status, provided minimum physical presence requirements are met.

For a comprehensive comparison of programmes, costs, and passport strength, visit our guide to the best golden visa investment programmes.

Family Inclusion: Securing Your Family's Future Together

One of the most compelling features of citizenship by investment programmes is the ability to include family members within a single application. The definition of eligible dependants varies by programme but typically includes:

• A legally married spouse or, in some programmes, a common-law or same-sex partner
• Dependent children under the age of 18 (and in many cases up to 25–30 if in full-time education)
• Financially dependent parents and grandparents of the main applicant or spouse (subject to additional fees)
• Siblings, in some Caribbean programmes

Including dependants typically incurs additional government fees rather than requiring a proportionally larger investment. For families of four or more, Caribbean programmes such as Antigua & Barbuda and Dominica offer particularly strong value, with flat-rate family contribution options available. Mirabello's advisers can structure your application to maximise family inclusion whilst managing overall costs efficiently.

Key Benefits of Dual Citizenship Through Investment

For internationally mobile individuals and families, the strategic advantages of holding a second citizenship extend well beyond the passport itself:

• Global mobility: Leading investment passports offer visa-free or visa-on-arrival access to between 140 and 190+ countries, streamlining international business and travel.
• Business expansion: Citizenship in a jurisdiction with favourable trade agreements or EU membership can open doors to new markets, banking relationships, and corporate structures.
• Tax planning: Some citizenship programmes are based in jurisdictions with no capital gains tax, no inheritance tax, and no global income tax, which can form part of a comprehensive, legally structured tax strategy when combined with a change of tax residency.
• Political security: A second passport provides an invaluable safety net against political instability, civil unrest, or deteriorating conditions in one's country of origin.
• Educational and lifestyle access: EU citizenship in particular opens access to world-class universities, healthcare systems, and quality of life across 27 nations.
• Generational wealth: Citizenship obtained through investment is typically passed to future generations by descent, creating a lasting legacy.

Frequently Asked Questions About Countries That Allow Dual Citizenship

Which countries allow dual citizenship and also offer citizenship by investment?

Several countries that both permit dual citizenship and operate formal citizenship by investment programmes include St Kitts & Nevis, Antigua & Barbuda, Dominica, Grenada, St Lucia, Malta, Jordan, and Turkey. Each programme has its own investment thresholds, processing times, and passport strength. Caribbean nations are generally the most accessible, whilst Malta offers the most prestigious European option.

Does the United States allow dual citizenship?

Yes. The United States does not have a formal law forbidding dual citizenship, and whilst the naturalisation oath technically includes a renunciation clause, the US government generally does not enforce this for citizens who acquire another nationality voluntarily. Many US citizens lawfully hold second passports from other countries.

How much does citizenship by investment cost?

Costs vary significantly by programme. Caribbean CBI programmes represent the most accessible entry points, with total investment requirements (including government fees) beginning from approximately USD 150,000 for a single applicant in Dominica or Antigua & Barbuda. Malta's EU citizenship programme requires a total outlay beginning from approximately EUR 850,000 for a single applicant via the 12-month residency route. All figures are subject to change and professional advisory fees apply.

How long does it take to get citizenship by investment?

Processing times range from as little as 45–60 days via St Kitts & Nevis's Accelerated Application Process to 4–6 months for standard Caribbean applications, and 12–36 months for Malta's EU citizenship programme. Timelines depend on the programme selected, the completeness of documentation submitted, and government processing volumes at the time of application.

Can I include my children and parents in my citizenship by investment application?

Yes, in most programmes. Dependent children are almost universally eligible for inclusion. Parents and grandparents of the main applicant or spouse can be included in several Caribbean programmes and in Malta's programme, subject to age thresholds and additional government fees. Mirabello's advisers can confirm precise eligibility criteria for your specific family composition.

Do I need to live in the country to obtain citizenship by investment?

Not necessarily. The majority of Caribbean CBI programmes — including St Kitts & Nevis, Dominica, St Lucia, and Grenada — have no residency requirement whatsoever. Antigua & Barbuda requires just five days of physical presence within five years of citizenship. Malta's programme does require a qualifying period of legal residency (12 or 36 months), during which the applicant must be genuinely resident in Malta. Portugal's golden visa route to citizenship requires only seven days of physical presence per year during the five-year qualifying period.

Is citizenship by investment legal?

Absolutely. Citizenship by investment programmes are established by the sovereign legislation of each host country and are fully legal instruments of public policy. They are designed to attract foreign direct investment and have been operating successfully for decades. St Kitts & Nevis has operated its programme since 1984. The key is to work with a reputable, regulated advisory firm and to apply through officially recognised programme channels — which is precisely what Mirabello Consultancy provides.