While Paris has become increasingly cashless in 2026, you definitely still need Euros (€). Most major establishments, including taxis (by law), restaurants, and museums, prefer contactless or card payments. However, small bakeries (boulangeries), local street markets, and tiny cafes may have a minimum card spend (often €5–€15). Furthermore, cash is essential for small tips, public restrooms that require a coin, or purchasing a single baguette. It is recommended to keep about €50–€80 in small bills as a backup. Always choose to pay in the local currency (Euros) when prompted by a card reader to ensure you get the best exchange rate from your own bank.