How Payments Work in Korea

Korea is a heavily cashless society for locals, but that does not mean a foreign card works everywhere, and it does not mean you can skip cash entirely. Here is the practical picture.

Card acceptance

Where a merchant accepts cards at all, Visa and Mastercard generally work without trouble. The exceptions tend to be small shops, traditional markets, and some transit ticket kiosks, which can still be cash-only or unreliable with foreign cards. In practice, this means you can rely on a card for most restaurants, chain stores, and larger purchases, but should not assume it everywhere.

Cash and ATMs

A notable share of ATMs in Korea do not accept foreign-issued cards at all. The most reliable options tend to be ATMs at major banks such as Woori Bank and KB Kookmin, along with the “Global ATM” machines found in many convenience stores. One detail worth knowing before you land: Korean ATMs generally only accept four-digit PINs. If your card at home uses a longer PIN, contact your bank before you travel rather than discovering the problem at the machine — repeated failed attempts can also trigger a fraud lock on your card.

Your T-money card overlaps with this

As covered in the public transportation guide, your T-money transit card is its own small cash balance, separate from your bank card. Buying or topping up a T-money card at a subway station kiosk works reliably with Korean won in cash; foreign-card acceptance at these kiosks varies by machine, so keep a little cash on hand for T-money even if you are otherwise relying on cards for everything else.

A simple plan

Bring at least one, ideally two, internationally accepted cards (Visa or Mastercard), and carry a modest amount of Korean won in cash — enough to cover a market stall, a small local restaurant, or a cash-only situation, without needing to withdraw large amounts. That combination covers the vast majority of situations a first-time visitor actually runs into.