Naturalization by Length of Residence
The reward for your journey
Portuguese Nationality Law allows foreign nationals who have legally resided in Portugal for at least five years to apply for Portuguese citizenship by naturalization, commonly referred to as Citizenship by Length of Residence (Article 6(1)).
This is the natural path for those who immigrated through work, study, entrepreneurship, or passive income visas. It marks the moment when you cease to be legally classified as an “immigrant” and become a “national,” with full civil and political rights. It is also the route most legal residents take to convert a Residence Permit (AR) into permanent Portuguese citizenship.