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Tax

The Praca do Comercio in Lisbon, home to Portuguese government finance offices, seen from the Tagus river

Avoiding Double Taxation in Portugal in 2026 — A Practical Guide to the Double-Taxation Treaties, the Tax-Residency Certificate, the RFI Forms and the Article 81 Foreign Tax Credit

Move to Portugal with a foreign pension, rental or portfolio and the same income risks being taxed twice. Here is how the machinery that prevents it works in 2026: the treaty network, the Article 81 foreign tax credit, the tax-residency certificate and the RFI forms — and the mistakes that cost peop
The Portugal Brief
The modern Loja do Cidadao de Mafra, one of Portugal's one-stop public-service centres where residents obtain official certificates

Getting a Certidão de Não Dívida in Portugal in 2026 — A Practical Guide to Proving You Owe Nothing to the Tax Authority and Social Security, the Free Instant Online Certificates and the Access-Code Shortcut

Plenty of everyday procedures in Portugal — public subsidies, contracts, some residence and nationality steps — require proof you owe nothing to Finanças and Segurança Social. Our 2026 guide covers the free instant certificates on both portals, their validity and the access-code shortcut.
The Portugal Brief
The public service hall of the Registos Centrais civil registry in Lisbon, Portugal, with numbered service counters, blue waiting chairs and members of the public being attended to

The Habilitação de Herdeiros (Declaration of Heirs) in Portugal in 2026 — A Practical Guide to the Cartório and Balcão das Heranças, the Documents, the Imposto do Selo Deadline, and Unlocking a Deceased's Accounts and Property

When someone dies in Portugal, nothing moves — bank accounts, property, vehicles — until the heirs are legally named in a habilitação de herdeiros. A practical 2026 guide to where to do it, the documents, the costs, the three-month Imposto do Selo deadline, and who is exempt.
The Portugal Brief