A second passport is ultimately an access product: the value it delivers is determined by where it allows you to travel without a prior visa application, and how it compares to your existing passport on that dimension. Investors considering citizenship by investment programmes need to understand what the target passport actually delivers in terms of visa-free access, and what the trade-off is between a passport that is quick and affordable to obtain versus one that provides substantially greater travel freedom.
How Passport Strength Is Measured
Passport strength is typically measured by the number of destinations accessible without a prior visa (visa-free or visa-on-arrival). The Henley Passport Index and the Arton Passport Index are the two most widely cited rankings. In 2026, the strongest passports in the world (Japan, Singapore, France, Germany, Italy, Spain) provide visa-free or visa-on-arrival access to 190+ destinations. A US passport provides access to approximately 186 destinations.
Caribbean CBI passports (St. Kitts, Grenada, Antigua, Dominica, St. Lucia) provide access to approximately 140–160 destinations. Notably, they typically provide access to the Schengen Area (90-day visa-free access), the UK, and most of the Americas — which covers the key destinations for most investors.
Programme-by-Programme Assessment
Grenada — The E-2 Advantage
Grenada’s citizenship by investment programme has a structural advantage that no other Caribbean CBI programme shares: Grenada has a bilateral investment treaty with the United States that allows Grenadian citizens to apply for E-2 investor visas, providing long-term renewable residence in the US for qualifying investors. This makes Grenada CBI uniquely valuable for investors from countries that do not have E-2 treaties with the US (including China, India, Russia, and others) who want US access beyond the standard 90-day visa-waiver or B-1/B-2 tourist visa.
Grenada passport: approximately 146 destinations visa-free. Investment threshold: from USD 220,000 in approved real estate. Processing time: 4–6 months.
St. Kitts & Nevis — The Original and Most Established
St. Kitts & Nevis launched the world’s first CBI programme in 1984 and remains one of the most respected and institutionally credible programmes. The St. Kitts passport is widely accepted and the programme has consistently passed OECD and EU scrutiny. Processing is faster than most CBI programmes.
St. Kitts passport: approximately 157 destinations visa-free. Investment threshold: from USD 250,000 in approved real estate. Processing time: 3–6 months.
Antigua & Barbuda
Antigua’s programme includes a five-year residency obligation (physical presence of at least five days in the first five years) and allows family units to be included efficiently. The programme is competitively priced relative to St. Kitts and Grenada.
Antigua passport: approximately 151 destinations visa-free. Investment threshold: from USD 200,000 in approved real estate. Processing time: 3–6 months.
Dominica
Dominica is one of the most affordable CBI programmes globally and the programme has a strong track record. Dominica’s passport provides Schengen access and broad Caribbean and Commonwealth access. Post-Hurricane Maria reconstruction has added a layer of resilience narrative to investment in Dominica’s approved real estate projects.
Dominica passport: approximately 145 destinations visa-free. Investment threshold: from USD 200,000 in approved real estate. Processing time: 4–6 months.
Malta — The EU Passport
Malta’s programme (Malta Permanent Residency Programme and separate naturalisation route) provides an EU passport — the most powerful passport category in the world for visa-free access. Malta citizenship grants Schengen Area freedom of movement (26 countries), the right to live and work anywhere in the EU, and a passport with access to 185+ destinations. The price reflects this: total commitment typically exceeds EUR 700,000 (non-refundable contribution, property requirement, philanthropic donation). Processing time is 12–36 months.
Turkey
Turkey’s citizenship by investment programme requires a minimum property investment of USD 400,000 and provides Turkish citizenship, which gives visa-free access to approximately 110 destinations. The strategic value is primarily for investors from countries with weaker passports who want a complementary citizenship, or who value access to Turkish financial and business networks.
What to Prioritise in Your Decision
The relevant questions are: which specific destinations do you currently access with difficulty on your existing passport and want easier access to? Does the E-2 treaty with the US matter for your specific situation? Are you primarily seeking immediate travel optionality (Caribbean CBI) or eventual EU citizenship (European RBI with naturalisation pathway, or Malta CBI)? What is your budget, and how does the exit liquidity of the underlying real estate investment factor into the total cost calculation?
These questions have different answers for different investors, and the optimal programme is investor-specific rather than universally determinable by a ranking table.
The Bottom Line
The best second passport for a given investor depends on their existing passport strength, their specific travel and access objectives, their budget, and their timeline. Caribbean programmes deliver a functional second passport quickly at accessible investment thresholds; Malta delivers an EU passport at substantially higher cost; Grenada delivers unique E-2 treaty access. The right choice is determined by the specific gap the second citizenship is being acquired to fill.