Seoul Transit Card with a Foreign Card 2026: Climate Card Takes Visa, T-money Doesn't (Yet)

Bottom line: There are two different ways to get a transit card with a foreign card, and they're not the same. At the new ticket machines inside subway stations, you can use a foreign-issued Visa or Mastercard to buy a Climate Card short-term pass (1-7 days) or single-use tickets on the spot. Topping up the Mobile T-money app on an iPhone is different — Visa doesn't work there yet, only Mastercard, American Express, and UnionPay.

If you didn't know: Show up with only a Visa card and try to top up Mobile T-money first, and the payment gets rejected. Not knowing which card works where wastes time standing at the machine, and you may end up pulling out cash or buying a separate physical card. Foreign-card payments at the new ticket machines carry an average 3.7% service fee — top up 100,000 won and you pay an extra 3,700 won.

The two systems are run by different operators entirely. The Climate Card is a Seoul city-run transit pass, while T-money is a prepaid card run by a private payments company. To a traveler they both just look like "a transit card," but the fact that they accept different card networks is exactly what causes the confusion. The simplest move is to head straight for a subway station ticket machine from the start — no passport or paperwork needed, just insert your card and a short-term pass or single-use ticket prints out immediately. Tapping a card directly at the platform gate isn't supported yet, so you must buy a physical card or ticket at the machine first.

Journey stage: First hour · Verified 2026-10-28