Do you need cash in South Korea?
Short answer
Rarely. Cards and phone payments work almost everywhere, including buses and street stalls.
Card works in places it would not elsewhere
Card penetration here is close to total. City buses, street food carts, temple shops, taxis and vending machines all take plastic or a phone, and a resident can go weeks without handling a note.
There is no minimum spend culture either. Paying for a single coffee by card is unremarkable, and nobody will sigh at you for it.
Where a foreign card can still fail
The gap is not cash versus card, it is domestic versus foreign. Some terminals, unattended kiosks and older market stalls only accept Korean-issued cards, and the failure is silent — the machine simply declines.
Self-order kiosks in fast food and cafés are the most common place this bites, because there is no cashier to fall back on. Having a small amount of cash solves it in seconds.
What to carry
Enough for a traditional market and the occasional kiosk is the realistic answer. Traditional markets, older street vendors and some temple sites still prefer notes, and those are exactly the places worth wandering into.
ATMs that take foreign cards are marked "Global" and sit in convenience stores and subway stations. Bank branch ATMs are more likely to reject an overseas card than accept one.
Good to know
- Transit cards can be bought and topped up at any convenience store
Yes. Cards work in cities, but small restaurants, shrines, and rural transport are cash only.
Rarely — but a card on its own is not the answer either. Almost everything runs through payment apps, and a foreign card has to be linked to one of them first.
Some. Malls and hotels take cards, but stalls, markets and shared vans want cash — and locals mostly pay each other by QR.
Yes. Hotels and malls take cards, but street food, markets and short rides all run on cash — and the notes are easy to confuse.
Some. Convenience stores and chains take cards, but night markets and small kitchens run on cash — and on the transit card.