I recommend starting with 1000-2500yen and than refilling it as you run low. The machines are always right in front of the platform, are in English, and incredibly easy to use. I found it a great way to use up small coins, and I never had to worry about having too much left on the card when I left Japan.

For a typical 3-to-5-day stay in Tokyo in 2026, a starting top-up of ¥3,000 to ¥5,000 (approx. $20–$35 USD) is recommended. A single subway or train journey within central Tokyo usually costs between ¥170 and ¥350, so this amount covers several days of heavy sightseeing. If you plan to use your Suica for "Konbini" (convenience store) purchases, vending machines, or coin lockers, you may want to load closer to ¥10,000, as it functions like a digital debit card across Japan. It is important to note that the "Welcome Suica" cards used by many tourists do not offer refunds on unused balances, so it is better to start small and add money in ¥1,000 increments at any station ticket machine as needed. If you are using a digital Suica on your iPhone or Apple Watch, you can top it up instantly using your linked credit card, allowing you to maintain a lower balance and avoid leaving money on the card when you depart.