Chapter III · Taxation of income

Article 8 Shipping and Air Transport

Artigo 8.º · Transporte marítimo e aéreo

Convenção Portugal–Reino Unido · signed 15 September 2025 · in force 29 December 2025 · English: authentic text

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1. Profits of an enterprise of a Contracting State from the operation of ships or aircraft in international traffic shall be taxable only in that State.

1 - Os lucros de uma empresa de um Estado Contratante provenientes da exploração de navios ou aeronaves no tráfego internacional só podem ser tributados nesse Estado.

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2. The provisions of paragraph 1 shall also apply to profits from the participation in a pool, a joint business or an international operating agency.

2 - O disposto no n.º 1 é aplicável igualmente aos lucros provenientes da participação num pool, numa exploração em comum ou num organismo internacional de exploração.

Paying or receiving income between Portugal and the United Kingdom? Article 8 may decide where it is taxed.

We apply tax treaties to dividends, interest, royalties, salaries and gains, prepare the relief-at-source form and refund claims, and check structures against the treaty’s anti-abuse rules. A written answer and a fixed quote within one working day.

The English column is an authentic text of the Convention, reproduced from the text published on GOV.UK by HM Revenue & Customs. The Convention was done in Portuguese and English, each text being authentic. The Portuguese text is reproduced from the official publication. Editorial notes are ours and are not part of the Convention.

Applying the law

Treaty relief between Portugal and the United Kingdom, claimed correctly

Treaty rates are not automatic in Portugal: the recipient must give the payer a form certified by its own tax authority before the tax is due, or claim a refund afterwards. We check which article applies, the rate and the paperwork.

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