Driving in Portugal, and the electronic toll trap

On the main barrier motorways, the A1 Lisbon to Porto and the A2 towards the Algarve among them, the system is familiar: take a ticket on entry, pay at the exit by cash, card or transponder. Distances are real money, with a run like Lisbon to Porto costing roughly 25 euros for a car as of 2026, so check the current tariff if it matters to your budget. Whatever you do, do not drift into a Via Verde lane without a device fitted: those lanes are for transponders only and using one without one is a fine rather than a shortcut.

The other kind is the problem. Electronic-only motorways have no toll plazas at all, only gantries that read your plate, and they are signed as electronic toll only. There is nowhere to hand over money, so if you have not registered a payment method in advance, you have simply incurred an unpaid toll. There is a short window, a matter of days, to settle it at a CTT post office or a Payshop afterwards, and after that it becomes a fine that follows the vehicle's owner, which in a rental means it follows you with the rental company's admin fee attached. One genuinely good change: the ex-SCUT motorways, including the A22 along the Algarve, the A23, A24, A25 and the A4 Transmontana, have been toll-free since 1 January 2025, so older advice about the Algarve toll trap is now out of date.

Since January 2023, Portuguese law has required car rental companies to fit an automatic toll payment device to their vehicles, so a car picked up in Portugal should already have one. Practically, that solves the electronic-only problem: you drive, the gantries read the device, and the tolls plus a daily service fee are charged to your card afterwards. The fee is typically around 1.50 to 2 euros a day as of 2026, and it is usually charged for the whole rental period rather than only the days you use a motorway.

This is the part with the reputation, and the reputation is mostly about the bill arriving weeks later rather than the amount. Two things to do at the counter: confirm the fee policy in writing, specifically whether the daily charge applies to every day of the rental, and ask them to point at the device so you know it is there and active. Then keep an eye on your card statement for the weeks after you get home, since that is when the tolls, the service fee and any fines land. If you would rather not have the device at all, some companies allow you to decline it, but then the electronic-only roads become your problem to register for, which is rarely worth the saving.

Driving in from Spain in your own or a Spanish-registered car changes the job. Three routes work. EASYToll: at an automated Welcome Point near the border you link a Visa or Mastercard to your number plate, valid for a limited period, and tolls are then charged automatically. TOLLCard: a prepaid card in small fixed amounts, bought online, at post offices and at service stations, activated by text message. Via Verde Visitors: a rented transponder that works in the fast lanes as well as on the electronic roads. If you already have a Spanish Via-T device, it is generally accepted across the Portuguese network, though it is worth confirming with your issuer that international use is active.

Whichever you pick, set it up before you use an electronic-only motorway, because the whole design assumes prior registration. And carry an International Driving Permit alongside your US license: it is the standardised translation of your license, cheap, valid for a year, and only obtainable in the US before you leave, so it removes a question a rental desk or an officer might otherwise ask. This guide is written for US travelers departing the US. For more, see cash or card in Portugal, the Euronet ATM fee trap, and the Portugal money guide.

Common questions

Quick answers.

More on Portugal

The little money things nobody warns you about.

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• Bringing your dog or cat to Portugal.Portugal runs on the single EU pet-entry process for a US-origin dog or cat: microchip, rabies in the right order, and an EU health certificate on a 10-day clock. No quarantine, no rabies titer. Here is what that means for Portugal, and the local parts worth knowing.