· Korea Life Guide · 4 min read
As of Nov 2026Using Foreign Credit Cards in Korea: Where They Work and When You Need Cash
Visa and Mastercard work in most Korean shops, but T-money top-ups, small markets and some Korean apps still trip up visitors. Here is what works, what doesn't, and how to avoid extra fees.
Korea is one of the easiest countries in Asia to pay by card. Most shops, cafés, convenience stores and taxis take cards. But a few everyday things still need cash, and visitors often find out at the worst moment, like at a subway machine or a market stall.
This guide covers where your foreign card works, where it doesn’t, and a few habits that save you money.
Quick answer
| Situation | Foreign card? | What to do |
|---|---|---|
| Shops, cafés, restaurants in cities | Yes, Visa and Mastercard work | Carry one Visa or Mastercard as your main |
| Big hotels, department stores | Yes, Amex often works too | Bring a backup card in case one is declined |
| Traditional markets, small food stalls | Often cash only | Keep some Korean won (KRW) with you |
| T-money top-up at a convenience store | No, cash only | Top up with cash |
| T-money top-up at regular subway machine | No, cash only | Top up with cash |
| Korean shopping and delivery apps | Sometimes, depends on the app | Check the payment page before ordering |
| ATMs | Yes, at ATMs that take foreign cards | Look for a “Global ATM” sign |
Which card networks work
Visa and Mastercard are the safest choices. They are accepted almost everywhere that takes cards in Korea.
American Express works at major hotels and department stores, but smaller places may not take it. If Amex is your main card, bring a Visa or Mastercard as well.
Even with the right network, a foreign card is sometimes declined at smaller stores. This is usually the shop’s terminal, not your card. Having a second card from a different bank helps.
When you still need cash
Plan to carry some cash for:
- Traditional markets such as street food stalls and small vendors
- Small family restaurants, especially outside big cities
- T-money top-ups (see below)
You don’t need much. A small amount of won for snacks, markets and top-ups is enough for most travelers, since cards cover the rest.
T-money: the most common surprise
T-money is the rechargeable card most people use for subways and buses in Korea. You tap it when you get on and off.
The catch is that a regular T-money card can’t be topped up with a credit card, Korean or foreign. At convenience stores and at standard subway top-up machines, you pay in cash.
Here is what you can do:
- Buy a T-money card at a convenience store or the airport.
- Top it up with cash, either at the counter (“T-money charge, please”) or at a subway machine.
- Newer Seoul subway machines accept foreign Visa and Mastercard for single-journey tickets, but not for T-money top-ups.
Some prepaid travel cards for foreigners, like WOWPASS, let you load money with a foreign card and also have a T-money function. Check the card’s own page for current fees and where you can load it.
Using ATMs with a foreign card
Not every Korean ATM accepts foreign cards. Look for machines marked “Global ATM”, or ones showing the Cirrus, Plus, Visa or Mastercard logos.
ATMs in train stations, bus terminals and department stores tend to be the most foreigner-friendly.
Two tips:
- Korean ATMs often expect a 4-digit PIN. If your PIN is longer, ask your bank before you travel.
- Your home bank may charge its own fee on top of the ATM fee. Taking out larger amounts less often keeps fees down.
Always pay in won, not your home currency
Sometimes a card machine or ATM asks if you want to pay in your home currency (for example USD) instead of Korean won. This is called dynamic currency conversion.
It looks convenient, but the exchange rate is usually worse than your card network’s rate. Choose KRW (won) when asked.
Korean apps and websites
Many Korean apps for delivery, shopping or tickets are built for Korean residents. Some ask for 본인인증 (identity verification with a Korean phone number) or only take Korean cards.
Before you spend time filling a cart, scroll to the payment page and check whether foreign cards, PayPal or other options are listed. If not, look for an English or international version of the service.
Summary
- Bring Visa or Mastercard as your main card, plus one backup card.
- Keep some cash for markets, small restaurants and T-money top-ups.
- Use Global ATMs for cash and choose KRW when asked about currency.
- Expect some Korean apps to need a Korean phone number or card.
Sources checked: Trip.com payment guide, Frommer’s: Money in South Korea, The Soul of Seoul: Where to buy a T-money card, Creatrip: T-money guide.