We would advise allowing for around 50-100 euros per day, do you have to spend this exact amount every day? No. Different factors will come into play, for example, one of the days you may want to do a tour that costs around 15-20 euros, but you still need to allow money for eating, public transport etc.

For an Interrailing trip in 2026, a realistic daily budget ranges from €50 to €100 per day, excluding the cost of the pass itself. A "budget" traveler staying in hostel dorms and eating from supermarkets might spend around €50–€60, while a "mid-range" traveler opting for private rooms and occasional restaurant meals should plan for €80–€100. Remember to account for mandatory seat reservations on high-speed and night trains, which can cost between €10 and €35 extra per journey. Eastern and Central Europe (like Poland or Hungary) are significantly cheaper than Western hubs like Paris or Zurich. It's wise to have an emergency fund of at least €200–€300 in addition to your planned daily spending to cover unexpected transit changes or medical needs.