As of 2026, you do not need cash for Lisbon's iconic trams, and in fact, it is much more expensive to pay with cash. If you pay the driver in cash (a "board fare"), a single trip on a vintage tram like the 28E typically costs around €3.10. However, the modern and preferred way to pay is using a Viva Viagem or Navegante card, which can be topped up at any metro station or "Ponto" kiosk. Using the "Zapping" method on these cards reduces the fare significantly to approximately €1.60. Furthermore, in 2026, most modern trams in Lisbon now accept contactless credit/debit cards and mobile payments (Apple Pay/Google Pay) directly at the validators, similar to the London Underground. While cash is still technically accepted on the older wooden trams for tourists who arrive unprepared, the system is designed to discourage it. For the best experience in 2026, buy a 24-hour unlimited public transport pass for around €6.80, which covers all trams, buses, and the famous Santa Justa Lift.