Portal Aduaneiro
Published 8 November 2026, 22:23
Portal Aduaneiro (customs portal of the tax and customs authority, Autoridade Tributária e Aduaneira)
A separate tax authority website for customs matters: goods declarations, parcels from abroad, duty payments and the cash declaration. Cash of €10,000 or more carried into or out of the European Union must be declared to customs; the rule applies across the EU (Regulation 2018/1672), and in Portugal it is this service that accepts the declaration.
Where you come across it. Carrying a large sum in cash, a parcel liable for duty, bringing goods in from outside the EU.
It is worth keeping a copy of the declaration: when, a year or two later, the bank or the tax office asks where your money came from, it is the only document that explains the cash. Without it, "I brought it with me" is backed by nothing.
Official website: aduaneiro.portaldasfinancas.gov.pt