For years, Portugal’s Golden Visa programme was one of the most compelling residency-by-investment propositions in Europe. A clearly defined pathway to EU residency, a manageable naturalization timeline, and the implicit promise of citizenship within reach, these were the terms on which thousands of foreign investors committed their capital and, in many cases, structured their families’ futures around a Portuguese legal framework. That framework has now changed, unilaterally and without transitional protection, and the consequences are only beginning to unfold.
More than 500 golden visa investors, many of them Americans, are now preparing legal action against the Portuguese government after recent changes to the country’s nationality laws dramatically altered the path to citizenship for foreign residents.
The trigger is Portugal’s revised Nationality Law, promulgated by President António José Seguro on May 3rd, 2026. Passed on April 1st following a deal between the governing Social Democratic Party and Chega, the law doubles the naturalization timeline from five to ten years for most foreign nationals, with EU citizens and nationals of Portuguese-speaking countries subject to a seven-year requirement. Critically, the law contains no formal transitional regime, and the residency clock now starts from the date AIMA, Portugal’s Agency for Integration, Migration and Asylum, issues a residence permit, not from the date of application submission.
What has caused the strongest backlash is the absence of transitional protections for existing applicants. Under the updated system, the residency countdown begins only when Portugal’s immigration agency formally issues a residence permit, not when the application was originally submitted. For many investors who applied years ago and have spent significant time waiting for administrative processing, the impact is substantial. Some applicants who expected citizenship eligibility within five or six years may now face waiting periods extending beyond ten years due largely to government delays outside their control.
Lawyers involved in the matter argue that the issue goes beyond immigration policy and raises broader concerns about legal certainty, legitimate expectation, and trust in government institutions. Madalena Monteiro of Liberty Legal, who previously filed an amicus curiae brief to Portugal’s Constitutional Court on behalf of golden visa investors, has described the amendment as evidence that structural rule-of-law matters cannot be managed according to political or media cycles. Where the legitimate expectations of thousands of people and Portugal’s international credibility are at stake, she argues, legal stability and protection of trust must take precedence over rushed political solutions.
Sara Sousa Rebolo, partner and co-founder of Prime Legal, has framed the legal argument with particular precision. “Residence and nationality are distinct legal realities, she acknowledges, there is no automatic right to citizenship”. But naturalization by residence, she argues, must be understood as the outcome of a complex legal process formed over time, one in which legal residence is not peripheral but structurally prerequisite. That accumulated process creates, at minimum, a qualified legitimate expectation deserving legal protection. Ms. Rebolo points to a telling detail: when the golden visa programme launched, the former SEF website explicitly referenced the possibility of acquiring Portuguese nationality through the golden visa residence route. The naturalization period was then six years; it was subsequently reduced to five. For investors to have understood that citizenship was achievable within that timeframe was not unreasonable, it was the direct reading of the state’s own published framework.
Another major issue is the role played by Portugal’s immigration backlog. Lawyers argue that the government cannot reasonably delay processing for years and then use those same delays to extend applicants’ path to citizenship under a stricter legal framework. they waited years for the state to process their files, and the state has now used the issuance date of the residence permit as the starting point for a newly extended naturalization clock. In practical terms, some investors may now face effective residence periods exceeding ten years before becoming eligible for citizenship, despite having initiated their processes under a five- or six-year framework.
Again, Ms. Rebolo’s assessment of this dynamic is pointed. It is not legally neutral, she argues, for the same state that benefited from the investment, delayed the process, and then sought to shift the consequences of that delay onto individuals by retroactively worsening their path to citizenship.
The legal avenues under consideration include state liability claims for damages arising from the political-legislative function, constitutional challenges before national courts, potential review by the Constitutional Court, recourse to the European Court of Human Rights, and if effective residence periods exceed ten years, questions of compatibility with the European Convention on Nationality. Though, The Institute of Registries and Notaries (IRN) announced that applications submitted before the new law’s approval will be subject to the old rules, this is yet to be confirmed.
Beyond the legal dispute itself, the situation has wider implications for the global investment migration industry. Investors considering residency or citizenship programmes are increasingly paying attention not only to tax benefits, lifestyle, and mobility advantages, but also to the long-term reliability of the jurisdictions offering those programmes.
This Portugal situation highlights a key risk in global mobility planning: sovereign risk —the possibility that a government may change the rules after investors have already committed substantial capital and structured their lives around an existing legal framework. For high-net-worth individuals and internationally mobile families, the lesson is not necessarily to avoid residency-by-investment programmes altogether, but to approach them with careful legal, financial, and strategic planning. The investors now preparing to sue Portugal did not fail to do their due diligence. They trusted a system that appeared stable, well-established, and legally sound. The question the courts will now be asked to answer is whether Portugal exercised its sovereign discretion within constitutional and conventional limits or exceeded them. The investment migration community, and the jurisdictions competing for its attention, will be watching closely.
How Fiduciary Services Limited Can Support
At Fiduciary Services Limited, we work with high-net-worth individuals and families who understand that global mobility planning is a long-term commitment, one that requires not just identifying the right programme, but selecting the right jurisdiction, structuring investments appropriately, and anticipating how policy environments may evolve.
Our Citizenship and Residency by Investment advisory services are designed to help clients evaluate programmes across jurisdictions with full regard for legal stability, tax implications, and succession planning objectives and to navigate application processes with the support of experienced legal, financial, and fiduciary advisors.
