License RequirementsUS Licence in Portugal 2026: Valid Alone, on Two Conditions
Yes. Portugal's Highway Code recognises OECD licences, the US included, if issued or renewed under 15 years ago and the driver is under 60. Outside that, an IDP covers 185 days.
Yes, and for most American visitors the card alone is enough. Portugal’s Highway Code recognises licences from OECD countries, the United States among them, as long as the licence was issued or last renewed less than 15 years ago and you are under 60 (Código da Estrada, art. 125).
Two tests your card has to pass
Most European countries treat a US licence as a foreign document that needs a translation. Portugal is unusual: article 125(1)(c) of the Código da Estrada lists licences from member states of the OECD (and of the Portuguese-speaking CPLP) as valid on their own, on three cumulative conditions:
- the issuing country has signed one of the international road-traffic conventions or a bilateral agreement with Portugal (the United States is a party to the 1949 Geneva Convention);
- no more than 15 years have passed since the licence was issued or last renewed;
- the holder is under 60.
Check the issue date on your card before you fly. A long-life licence that has not been renewed for 15 years, or a driver who has turned 60, drops out of this route.
If you fail one of the tests: the IDP route
A licence that does not qualify under paragraph (c) still works in Portugal when it travels with an International Driving Permit — article 125(1)(g) recognises IDPs “presented with the national licence that supports them”. In that case the clock matters: article 125(3) lets a non-resident drive for the first 185 days after entering the country. In the United States only AAA and the American Automobile Touring Alliance are authorised to issue the permit, and it has to be obtained before you leave.
After you take up residence
Moving to Portugal changes the rules. For licences covered by the 185-day rule, article 125(4) sets 90 days from taking up residence to exchange the card for a Portuguese one at the IMT (Instituto da Mobilidade e dos Transportes). Driving outside the limits of paragraphs 3 to 5 is fined EUR 300 to 1,500 (art. 125(8)).
Age
Article 125(5) says a foreign licence only lets you drive in Portugal if you have reached the minimum age Portuguese law sets for that category — 18 for a car. Minimum ages for hiring a car are a separate matter, set by each rental company in its own terms.
Confirm licence validity for your trip
Check Permit RequirementsWhat to carry
The physical US licence, your passport and the rental agreement. If you rely on the IDP route, the permit is only valid alongside the card it translates. Portugal’s motorway network includes electronic-only toll sections with no booths, so ask the hire company how tolls are charged before you set off.
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Related Questions
Usually not. Article 125(1)(c) of the Código da Estrada recognises licences from OECD member states, which includes the United States, provided the licence was issued or last renewed less than 15 years ago and the holder is under 60. If either condition fails, the licence works through article 125(1)(g) instead: an International Driving Permit shown together with the US card.
For the first 185 days after entering Portugal, as long as you are not resident there. That limit is set by article 125(3) of the Código da Estrada.
Article 125(4) gives holders of the licences covered by the 185-day rule 90 days from taking up residence to exchange for a Portuguese licence at the IMT. Driving outside those limits carries a fine of EUR 300 to 1,500 under article 125(8).