In 2026, the most common and convenient way to pay for the Metro in Japan is using a rechargeable IC Card, such as Suica, Pasmo, or Icoca. You can purchase these as physical cards at station kiosks or, more popularly, add them directly to your Apple Wallet or Google Pay. To pay, you simply "tap" your phone or card on the reader at the ticket gate when entering and exiting; the system automatically calculates the fare and deducts it from your balance. For tourists, the Welcome Suica or Pasmo Passport are 28-day versions that don't require a deposit. While you can still buy individual paper tickets with cash at vending machines, IC cards are preferred as they can also be used at convenience stores and vending machines. Many cities also offer "Day Passes" (e.g., the Tokyo Subway Ticket), which can be purchased digitally or as a physical card for unlimited rides within a 24, 48, or 72-hour window.