Key figures — as of 2026-10-14: Lei Orgânica n.º 1/2026 published 18 May 2026, in force since 19 May 2026 — naturalisation residency rises from 5 years to 7 years (EU/CPLP nationals) or 10 years (all other nationalities) — applications filed with the IRN on or before 18 May 2026 stay under the old 5-year regime — non-EU/non-CPLP newcomers now face a 100% longer wait than someone who filed paperwork one day earlier.
A one-day cutoff that splits foreign residents into two groups
Portugal's new Nationality Law took effect on 19 May 2026, and the single most consequential line in it isn't the headline 7-or-10-year residency requirement — it's the transitional clause protecting anyone who got their paperwork in first. Pending nationality applications filed on or before 18 May 2026 remain under the prior Lei 37/81 regime (Artigo 7.º.2 transitional rule). That means two Americans who arrived in Portugal on the same residence permit, in the same year, can now face entirely different naturalisation timelines depending on whether their IRN file carries a date-stamp from before or after that cutoff.
The underlying change is steep. The naturalization residency requirement increased from 5 years to 10 years for most nationalities, and from 5 years to 7 years for CPLP and EU nationals. Under the new law, EU citizens and CPLP nationals now require 7 years of legal residence, while nationals of all other countries now require 10 years. For the roughly two-thirds of GrowIN's readership who hold non-EU, non-CPLP passports — Americans, Britons, Canadians, Indians, Chinese, Australians — that's not a tweak, it's a doubling of the wait.
Who actually benefits from the old rules
The grandfathering isn't a grey area or a matter of informal goodwill — it was confirmed in writing by the registry itself before the law even entered force. The IRN publicly committed, in a note published 7 May, that the date of submission on the online platform would determine which rules applied; if registration in the IRN system happened before the new law's entry into force, the previous legislation would govern. Legal commentators have since confirmed the practical effect: anyone who submitted their application by 18 May 2026 keeps the 5-year threshold and faces no language or civic knowledge test, even if the process takes years to be decided.
That last detail matters almost as much as the residency figure. The new regime doesn't just stretch the clock — it adds substance to the file. Naturalisation now requires reinforced conditions, including knowledge of Portuguese culture, history, national symbols, fundamental rights and duties, political organisation of the State, a solemn declaration of adherence to the democratic rule of law, and the capacity to ensure one's own subsistence. Applicants grandfathered under the old law skip all of that.
There's a second, less forgiving change buried in the statute: how the residency clock itself is measured going forward. Applications filed from 19 May 2026 onward are counted from the date the first residence permit was issued, not from the date the citizenship application is filed. Under the previous system, time spent waiting on a pending residence application could sometimes count too — a distinction immigration lawyers say will matter most for people who spent a year or more stuck in AIMA's backlog before ever getting a card in hand.
GrowIN's read on the numbers
Run the maths on a typical American remote worker who landed in Portugal on a D8 visa in 2024 and only protocoled their nationality file in April 2026: they still clear the bar at five years, becoming eligible in 2029. A compatriot who arrived on the identical visa in 2024 but files from 19 May 2026 onward must now wait until roughly 2034 — a five-year, 100% longer runway to a Portuguese passport, purely as a function of which side of a single calendar date their paperwork landed on. "A one-day filing gap is now worth half a decade of residency," is how GrowIN Portugal Editorial sums up the practical stakes for anyone sitting on a near-complete application.
What to watch next
The implementing regulation — the Regulamento da Nacionalidade Portuguesa — was due for an update within 90 days of publication to spell out exactly how the new language and civic tests will be administered; as of early October, no amended regulation had appeared in the Diário da República, leaving some procedural detail still unsettled. The Sephardic-descent route is closed outright to anyone who hadn't filed by the cutoff, with no transition. Citizenship by descent through grandparents under Article 6 — no residency requirement, just proven lineage and A2 Portuguese — was untouched by this reform and remains a separate, faster path for eligible applicants.
Anyone unsure which side of the line their file sits on should confirm directly with the IRN or a qualified immigration lawyer before assuming either timeline applies. For broader context on residence permits feeding into these nationality clocks, see GrowIN's visas hub, and talk to our team via services if you need help tracking down exactly where your application stands.