While Japan has become more credit-card friendly by 2026, it remains a "cash-first" culture for many authentic experiences. A practical rule of thumb for a 2026 traveler is to carry a mix: use cards for hotels and major department stores, but rely on cash for everything else. For a one-week trip, starting with ¥50,000 (approx. $330 USD) per person is a safe buffer for initial transport, street food, and temple entrance fees. Daily, a mid-range traveler should budget roughly ¥10,000–¥15,000 ($67–$100) in cash per person. This covers meals at small ramen shops, shopping at local markets, and recharging IC cards (transport cards like Suica/Pasmo), which often still require cash at machines. If you are traveling as a pair, ¥80,000–¥100,000 for the first week provides flexibility. You can easily withdraw more yen at 7-Eleven (7-Bank) ATMs, which are open 24/7 and accept international cards with low fees. Remember that you must declare cash amounts exceeding 1 million JPY to customs upon entry.