Chapter XV · Additional municipal property tax (AIMI) · Section I · Scope of the tax

Article 135-A Persons liable to AIMI

Artigo 135.º-A · Incidência subjetiva

Código do Imposto Municipal sobre Imóveis · annex I to Decree-Law No. 287/2003 · consolidated text checked 26 October 2026

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1. The taxpayers liable to the additional municipal property tax (AIMI) are the individuals or legal persons who are the owners, usufructuaries or surface-right holders of urban properties located in Portuguese territory.

1 - São sujeitos passivos do adicional ao imposto municipal sobre imóveis as pessoas singulares ou coletivas que sejam proprietários, usufrutuários ou superficiários de prédios urbanos situados no território português.

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2. For the purposes of paragraph 1, any structures or centres of collective interests without legal personality that appear in the property registers as taxpayers for the municipal property tax (IMI), and an undivided estate represented by the estate administrator (cabeça de casal), are treated as legal persons.

2 - Para efeitos do n.º 1, são equiparados a pessoas coletivas quaisquer estruturas ou centros de interesses coletivos sem personalidade jurídica que figurem nas matrizes como sujeitos passivos do imposto municipal sobre imóveis, bem como a herança indivisa representada pelo cabeça de casal.

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3. Taxpayer status is determined in accordance with the criteria laid down in Article 8 of this Code, with the necessary adaptations, by reference to 1 January of the year to which the AIMI relates.

3 - A qualidade de sujeito passivo é determinada em conformidade com os critérios estabelecidos no artigo 8.º do presente Código, com as necessárias adaptações, tendo por referência a data de 1 de janeiro do ano a que o adicional ao imposto municipal sobre imóveis respeita.

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4. The State, the Autonomous Regions, local authorities and their associations and federations of municipalities governed by public law, and any of their services, establishments and bodies, even those with legal personality, including public institutes, are not taxpayers liable to the AIMI.

4 - Não são sujeitos passivos do adicional ao imposto municipal o Estado, as Regiões Autónomas, as autarquias locais e as suas associações e federações de municípios de direito público, bem como qualquer dos seus serviços, estabelecimentos e organismos, ainda que personalizados, incluindo os institutos públicos.

What we checked in this article

Who is liable (owners, usufructuaries and surface-right holders of urban property in Portugal), the entities treated as legal persons (including undivided estates), the 1 January reference date and the excluded public bodies are retained.

Own property in Portugal? Article 135-A sets the yearly bill.

We check property valuations and IMI and AIMI assessments, apply for exemptions, handle complaints against valuations and plan ownership through individuals or companies, in English. A written answer and a fixed quote within one working day.

Unofficial English translation prepared by BCA Portugal for reference. Only the Portuguese text published in the Diário da República has legal force. Editorial notes are ours and are not part of the statute.

Applying the law

Annual property tax in Portugal, checked and kept low

IMI depends on the taxable value the tax office assigns and on the municipality; AIMI depends on who owns what. Send us the property records and we will check the valuation, the exemptions and the ownership structure.

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