Yes, you can use a Suica card (including the digital version and the Welcome Suica for tourists) far beyond the borders of Tokyo in 2026. This is thanks to the "Nationwide Mutual Usage Service" established between Japan's major IC card providers. A Suica card is compatible with the readers for PASMO, ICOCA, SUGOCA, nimoca, and Kitaca, meaning you can use it for subways, buses, and trains in major cities like Osaka, Kyoto, Sapporo, Nagoya, and Fukuoka. In 2026, the system has expanded to include even more regional lines and "Smartphone Commuter Passes" that work across different prefectures. Beyond transportation, the Suica is a widely accepted form of "e-money" at convenience stores (like 7-Eleven and Lawson), vending machines, and many restaurants across the entire country. However, there is one important limitation: you generally cannot use a Suica for a single continuous trip that crosses from one "IC area" to another (for example, taking a local train from Tokyo to Nagoya). For long-distance travel like that, you should still use the Shinkansen or buy a traditional paper ticket.