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In force since 27 July 2026 — applies to national and foreign entities (Article 1(1)).

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Authorities — Who Does What in the Portuguese Regime

The institutions that international organisations will encounter under Portugal’s lobbying transparency regime, and the role each of them plays under Law No. 5-A/2026 of 28 January (Lei n.º 5-A/2026, de 28 de janeiro).

Unlike some transparency regimes administered by a dedicated standalone agency, the Portuguese framework is built around Parliament, with enforcement and oversight distributed across existing institutions of the Portuguese state. Knowing who does what saves foreign entities time, misdirected correspondence and — in the worst case — procedural missteps before the wrong forum. The five institutions below cover the register itself, its future management, judicial review, prosecution and data protection.

Assembleia da República (Portuguese Parliament)

The Assembleia da República is the centre of gravity of the regime: the Transparency Register of Interest Representation (Registo de Transparência da Representação de Interesses — RTRI) operates under it (Article 1(1)), and the register — including the five registration categories of Article 13(3) — is made available through its portal. Parliament will publish the notice announcing the RTRI’s start of operation in the Diário da República (Article 18(3)) and reports annually on the system’s functioning. Official website: www.parlamento.pt.

The RTRI management body

The day-to-day management of the register will rest with a dedicated body: [to be defined by specific statute — Article 14]. The law provides that Parliament approves the RTRI’s governance and management model in a specific instrument, and until that statute is published the body’s composition and procedures remain undetermined. This website tracks that development, because it is the body registrants will deal with in practice.

Administrative courts

Sanctioning decisions under the regime — suspension of registration, limitation of access, exclusion from public consultations — are open to judicial review before the Portuguese administrative courts (Article 11(3)). For foreign entities this matters as a guarantee: sanctions are not final administrative acts beyond challenge, and an adverse decision can be contested through the ordinary administrative jurisdiction.

Public Prosecution Service (Ministério Público)

The Ministério Público is Portugal’s autonomous prosecuting magistracy. Under the regime, the exercise of interest representation without prior registration and the provision of false information are communicated to it (Article 11(6)), which places the most serious breaches on a potential criminal-law track rather than leaving them as purely administrative matters. Official website: www.ministeriopublico.pt.

CNPD — Comissão Nacional de Proteção de Dados

The CNPD is the Portuguese data protection authority. Because the RTRI publishes personal data in open formats under the safeguards of Regulation (EU) 2016/679 (GDPR) (Article 4(4)), the CNPD is the supervisory authority relevant to how that data is processed and to any complaint by a data subject. Organisations preparing registrations that include personal data of officers and staff should keep this supervisory layer in view. Official website: www.cnpd.pt.

Hyperlinks above point to official institutional websites. This page is informative and unofficial; the roles described are those resulting from Law No. 5-A/2026, whose authentic text is the Portuguese version published in the Diário da República.

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This website provides general information on Portuguese law and does not constitute legal advice. The authentic text of Law No. 5-A/2026 is the Portuguese version published in the Diário da República.

Este website disponibiliza informação geral sobre direito português e não constitui aconselhamento jurídico. O texto que faz fé da Lei n.º 5-A/2026 é a versão portuguesa publicada no Diário da República.