London, June 25: Global Citizen Solutions (“GCS”), a leading residency and citizenship planning advisory firm, today publishes new research examining investment migration through the lens of sustainable finance. The briefing, Sustainable Citizenship: Investment Migration as an Impact-Investing Asset Class, traces how 22 citizenship and residency programs have evolved from capital-based fiscal instruments into purpose-driven mechanisms aligned with the United Nations Sustainable Development Goals and the EU sustainable finance taxonomy.
Of the 22 programs examined, approximately half carry some form of sustainability framing. The analysis identifies Small Island Developing States (SIDS) as the most advanced globally, with Caribbean programs including Dominica, St. Kitts and Nevis, Grenada, and Antigua and Barbuda representing the strongest regional concentration of sustainability-framed investment migration. For many of these economies, citizenship-by-investment revenue covers climate adaptation needs that multilateral finance has consistently failed to meet. Climate adaptation costs for SIDS reach USD 5.1 billion per year, while actual multilateral adaptation finance covers less than a third of that figure. CBI revenue has become a parallel channel for the same developmental outcomes the SDG framework was built to deliver.
Dominica records CBI inflows at 33% of GDP in 2022 and 26.9% in 2023, directly supporting public investment in disaster reconstruction, climate-resilient infrastructure, and a geothermal energy transition. St. Kitts and Nevis shows the fiscal deficit widening to -11% of GDP following a decline in CBI revenue, illustrating the same relationship from the opposite direction. For small-island economies, investment migration is a fiscal capacity necessity, not discretionary income.
The research also identifies an alignment between the Caribbean and Europe, despite operating through entirely different mechanisms. Caribbean programs work through sovereign statute: St. Kitts and Nevis has legislated seven sustainability pillars directly into its contribution mechanism. As Joe Rice, Head of Citizenship Programs at Global Citizen Solutions, observes: “The framing is shifting from we want your capital to we want your contribution. The next generation of programs will be purpose-driven, with measurable outcomes attached to the contribution itself.” In Europe, programs work through EU-wide financial regulation. For example, Portugal’s fund route operates within the EU Sustainable Finance Disclosure Regulation (SFDR) perimeter, bringing investment migration into direct contact with the regulatory architecture governing sustainable finance. Vera Avidano, product specialist at Global Citizen Solutions, notes: “Even though the fund investment route remains the most popular choice, we are seeing a growing interest in the cultural donation route as well.”
Investor demand is accelerating this structural shift. Morgan Stanley’s 2025 Sustainable Signals survey found that 99% of Gen Z and 97% of Millennial investors expressed interest in sustainable investing. A Standard Chartered Private Bank survey of HNW and affluent investors across Hong Kong, Singapore, the UAE, and the UK found that 84% were open to shifting funds from philanthropy to sustainable investing. In the United States, the US SIF Foundation’s 2025/2026 Trends Report placed total US sustainable investment assets at $6.6 trillion, with 46% of surveyed institutions expecting to increase their impact investing activities over the next three years. As investment migration programs continue to evolve their fund-based routes, this demand profile strengthens the commercial rationale for sustainability-framed qualification structures.
Impact investing has emerged as a significant segment of global finance, enabling investors to generate positive social and environmental outcomes alongside financial returns. According to the Global Impact Investing Network (GIIN), more than 3,900 organizations managed an estimated US$1.57 trillion in impact investing assets worldwide in 2024, reflecting a 21% compound annual growth rate since 2019 (GIIN, 2024). The sector is driven by increasing investor interest in addressing challenges such as climate change, affordable housing, healthcare, education, and sustainable infrastructure while achieving competitive financial performance.
The briefing situates sustainability framing within a longer history. Panama’s Reforestation Visa, operating under Law 24 of 1992, has required capital to be deployed in government-approved tropical reforestation projects for over thirty years, predating the ESG label entirely. At the other end of the timeline, Nauru’s Economic and Climate Resilience Citizenship Act, launched at COP29 in November 2024, was the first citizenship program designed and marketed from inception as a climate-finance instrument. São Tomé and Príncipe’s National Transformation Fund, launched in August 2025, is the newest entrant to the sustainability-framed cluster. New Zealand extends this pattern to the Anglosphere through administrative pre-approval of climate-impact funds.
The transition, however, remains uneven. Gulf, North American, and most MENA programs carry no sustainability framing. The United States Gold Card, designed explicitly as a revenue tool for the federal government rather than as an investment in any specific national priority, it has no requirement that the money go toward a defined project or outcome — and no mechanism to verify that it does. Structured as a purely economic and deficit-reduction instrument, it falls at the opposite end of the spectrum from fund-based, sustainability-framed programs: it carries no sustainability framing, no traceable developmental mandate, and no alignment with recognized impact-investing frameworks.
“The programs we analyzed fall into two almost equal groups: those structured around sustainability and measurable development outcomes, and those designed purely as fiscal instruments. That divide is the defining feature of the sector right now,” said Liana Simonyan, Researcher at GCS’ research arm, the Global Intelligence Unit.