For a trip to Portugal in 2026, the best strategy is a "70/30" split favoring cards, but carrying some cash remains essential. Contactless payments (Apple Pay, Google Pay, and chip-and-pin cards) are the standard in major cities like Lisbon, Porto, and the Algarve, and you can even use your card for most taxis and metro tickets. However, Portugal has a unique traditional economy where many small family-owned "Tascas," local bakeries, and kiosks in rural areas either have a "minimum spend" for cards (often €5–€10) or remain "Dinheiro Apenas" (Cash Only). Furthermore, some older parking meters and small-town markets do not accept international credit cards, preferring the local "Multibanco" system. It is the "gold standard" to carry about €40–€50 in small denominations for these minor daily expenses. While you can withdraw cash from the widespread "MB" (Multibanco) ATMs, be sure to decline the "Dynamic Currency Conversion" (DCC) to ensure you get the bank's official exchange rate rather than a marked-up tourist rate.