In 2026, paying for a bus in Croatia depends on whether you are traveling "intercity" or "locally." For intercity coaches (like those from Zagreb to Split or Dubrovnik), the high-value "pro-tip" is to book online via platforms like FlixBus or Arriva; you simply show the digital QR code on your phone to the driver. For local city buses in Zagreb (ZET) or Split (Promet), you can typically buy a ticket from the driver (cash only, and often more expensive) or at a "Tisak" newsstand (cheaper). A major 2026 trend in Croatia is the rollout of contactless bank card payments and specialized mobile apps (like the "ZET" app in Zagreb), allowing you to "tap and go" as you board. Note that since Croatia joined the Eurozone, all cash transactions must be in Euros. Always remember to "validate" your paper ticket in the yellow machine upon boarding, as roaming ticket inspectors are common and issue heavy on-the-spot fines for unvalidated tickets.