“Passport by investment” is a commonly used term for Citizenship by Investment (CBI) , a legal process through which eligible foreign nationals may obtain citizenship after making a qualifying investment or economic contribution and completing the required due diligence process.
Unlike most traditional naturalization routes, CBI programs generally do not require applicants to live in the country for many years before becoming citizens. However, investment requirements, family eligibility, physical-presence rules and due diligence standards vary considerably between jurisdictions.
In 2026, the CBI landscape is also becoming more regulated. Governments are strengthening source-of-funds checks, applicant screening and program oversight in response to growing international scrutiny.
For investors considering a second citizenship, understanding these differences is increasingly important.
What Is Passport by Investment?
A passport by investment program allows a qualifying applicant to obtain citizenship, rather than simply a residence permit, through an investment framework established under the country’s laws.
Once citizenship is granted, the individual may generally become eligible for the country’s passport and receives the rights attached to citizenship under local law.
However, CBI should not be confused with Residency by Investment (RBI).
Citizenship by Investment (CBI) leads directly to citizenship after the applicant satisfies the program’s investment, eligibility and due diligence requirements.
Residency by Investment (RBI) provides residence rights rather than immediate citizenship. Depending on the jurisdiction, investors may need to maintain residence for several years, meet physical-presence requirements and satisfy separate naturalization conditions before becoming eligible for citizenship.
How Does Citizenship by Investment Work?
The process differs by country, but applicants typically select an approved investment route, submit personal and financial documentation, undergo government due diligence and complete the qualifying investment after receiving the relevant approval.
Depending on the program, investment routes may include:
- Government contributions: A non-refundable contribution to a national development or government fund.
- Approved real estate: Investment in property or government-approved developments, usually subject to a minimum holding period.
- Financial investments: Certain jurisdictions permit qualifying bank deposits, government securities or regulated investment funds.
- Business investment: Capital deployed into qualifying enterprises or projects, sometimes combined with employment requirements.
Importantly, the advertised minimum investment is not necessarily the total cost. Government processing, due diligence, passport, legal and dependent fees can materially increase the final amount required.
Citizenship by Investment in the Caribbean
The Eastern Caribbean remains one of the world’s best-known regions for Citizenship by Investment.
Five countries currently operate established CBI programs:
Antigua and Barbuda, Dominica, Grenada, St. Kitts and Nevis, and Saint Lucia.
The region has moved toward greater coordination in recent years, including minimum-pricing standards and stronger due diligence requirements.
However, investors should not assume that every Caribbean program costs USD 200,000. Each jurisdiction maintains its own contribution levels, fees and investment options. For example, Antigua and Barbuda currently lists a minimum USD 230,000 National Development Fund contribution, before applicable processing and due diligence fees.
Program requirements should therefore be compared on total family cost, rather than headline investment alone.
Citizenship by Investment Beyond the Caribbean
Citizenship-linked investment frameworks also exist outside the Caribbean, although their structures can be substantially different.
Türkiye
Türkiye offers one of the most prominent investment-based citizenship routes outside the Caribbean.
Foreign nationals may qualify through several investment options, including the acquisition of real estate worth at least USD 400,000, subject to a minimum three-year holding restriction.
Alternative routes include a minimum USD 500,000 fixed-capital investment, bank deposit, government bond purchase or qualifying investment-fund participation, generally subject to the applicable statutory conditions. Creating employment for at least 50 people is another qualifying route.
This makes Türkiye structurally different from donation-led Caribbean programs: the framework offers several forms of capital deployment rather than relying primarily on a government contribution.
Selected Passport by Investment Programs
Country | Indicative Minimum Investment* | Common Route | Key Consideration |
🇩🇲 Dominica | From USD 200,000 | Government contribution / approved real estate | Established Caribbean CBI framework |
🇦🇬 Antigua & Barbuda | From USD 230,000 | Government contribution / approved real estate | Family pricing can differ significantly from individual pricing |
🇬🇩 Grenada | From USD 235,000 | Government contribution / approved real estate | Treaty nationality may support eligibility to apply for the U.S. E-2 visa |
🇰🇳 St. Kitts & Nevis | From USD 250,000 | Government contribution / approved investment | World’s longest-running CBI program |
🇱🇨 Saint Lucia | From USD 240,000 | Government contribution / other qualifying options | Multiple investment structures available |
🇻🇺 Vanuatu | From approximately USD 130,000 | Government contribution | Different mobility and regulatory profile from Caribbean programs |
🇹🇷 Türkiye | From USD 400,000 | Real estate | Multiple alternative USD 500,000 investment routes |
*Figures are indicative entry thresholds and do not represent total application costs. Government fees, due diligence charges, dependent fees and other expenses may apply. Requirements can change.
Why Do Investors Consider a Second Citizenship?
The value of a second citizenship extends beyond the passport itself.
For some families, the primary objective is mobility diversification , reducing reliance on a single nationality for international travel. For others, second citizenship provides an alternative jurisdiction in which the family has a legal right to enter and reside if circumstances in their home country change.
Entrepreneurs may also consider how a particular nationality interacts with international business and immigration treaties.
One example is the U.S. E-2 Treaty Investor Visa. Nationals of treaty countries such as Grenada and Türkiye may be eligible to apply for E-2 status if they make a qualifying investment in a bona fide U.S. enterprise and satisfy the other visa requirements.
Obtaining Grenadian or Turkish citizenship alone does not grant the right to live or work in the United States; it establishes treaty nationality from which an eligible investor may make a separate E-2 application.
Citizenship Does Not Automatically Change Tax Residence
This distinction is particularly important for international investors.
Obtaining citizenship in another country does not automatically change an individual’s tax residence, eliminate existing tax obligations or make foreign income tax-free.
Tax residency is generally determined separately through factors such as physical presence, permanent home, domicile, economic ties and domestic tax legislation. Double-taxation treaties may also become relevant when an individual meets residence tests in more than one jurisdiction.
Investors should therefore evaluate citizenship planning and tax planning as related but legally separate matters.
How to Compare Passport by Investment Programs
Rather than selecting a program based solely on the lowest advertised investment, investors should consider several factors together: total family cost, investment recoverability, due diligence requirements, family eligibility, physical-presence conditions, travel access, taxation and the long-term stability of the program.
The underlying investment also matters.
A government contribution is generally non-refundable, while real estate or financial assets may preserve some capital value but introduce market, liquidity and exit risks.
Passport access can also change over time as governments revise bilateral visa arrangements. Current visa-free access should therefore not be treated as a permanent guarantee.
Conclusion: Choosing the Right Citizenship Strategy
There is no universally “best” passport by investment program.
A Caribbean CBI program may appeal to families prioritizing a relatively straightforward second-citizenship framework, while Türkiye may be more relevant to investors seeking to combine citizenship with property or other forms of capital investment.
The appropriate choice ultimately depends on the applicant’s nationality, family structure, source of funds, investment objectives, mobility requirements and existing tax position.
As international scrutiny of Citizenship by Investment continues to increase, due diligence should work both ways: governments assess applicants, but investors should also carefully assess the legal framework, investment structure and long-term credibility of the program before committing capital.
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