The 30-second answer
Yes, mostly. Visa and Mastercard work at most hotels, department stores, chain shops, cafes, convenience stores and taxis, and at KTX, AREX and new subway ticket machines. They usually fail for buying or topping up T-money (cash only), tapping in on city buses and subway gates, some self-service kiosks, traditional markets, and Korean shopping or delivery apps. An overseas Visa or Mastercard is often the most practical card, yet the issuer, merchant terminal, kiosk, and transaction type can still cause a decline. Carry a second card, a transit card, and a modest cash reserve.
If a terminal offers Korean won or your home currency, inspect the displayed rate, markup, and total. Home-currency conversion is a separate merchant or ATM conversion offer; choosing KRW normally leaves conversion to your card issuer. Check your issuer's terms rather than accepting a familiar-looking currency automatically.
Where your card works — and where it won't
| Place | Foreign card? | Backup plan |
|---|---|---|
| Department stores and chain shops | Often | Second card or cash |
| Cafes and chain restaurants | Often | Ask before ordering; second card or cash |
| Convenience stores | Often | Cash |
| Taxis | Common, but not guaranteed for every overseas card | Transit card or cash |
| Subway gates | T-money card (buy with cash) | — |
| City buses | Not accepted, except on Jeju city buses | Prepaid transport card; follow operator signage |
| Traditional markets, street food | Often no | Cash |
| Small independent restaurants | Usually yes, kiosks vary | Cash |
| Self-service kiosks | Mixed — some reject foreign cards | Order at the counter, or cash |
| Online Korean shopping/delivery apps | Frequently no (local authentication) | Book through international platforms |
Before you fly: five preparations
- Bring at least two cards on different networks (e.g., one Visa, one Mastercard). Terminal-level quirks reject one card and take the next without explanation.
- Check your issuer's travel settings and confirm overseas in-person purchases and cash withdrawals are enabled. Some issuers accept travel notices; others no longer use them.
- Check your card's foreign transaction fee — it decides whether card or ATM cash is your cheaper default.
- Set up mobile pay if your card supports it. Contactless acceptance in Korea has grown but remains store-dependent; the physical card still gets swiped or inserted in many places, so never rely on your phone alone.
- Know your PIN. Most tourist transactions need only a signature or nothing, but some terminals and all ATM withdrawals want the PIN.
Paying like a local: the small mechanics
- Hand your card over or insert it chip-first; terminals in Korea often sit with the staff, not facing you. This is normal, not suspicious.
- Tipping is generally not expected in ordinary restaurants and taxis. Pay the displayed amount unless the business clearly offers a separate service-charge or gratuity choice.
- Receipts are offered ("영수증 드릴까요?"); take them while traveling, they help with tax refunds and disputes.
- At kiosks, look for an English button first. If your card fails at a kiosk, go to the counter — humans can usually run the same card successfully.
- For purchases at Tax Free–signed stores, show your passport at the till before paying — see the tax refund guide (https://eroke.kr/korea-tax-refund-tourists/).
When your card is declined
- First move: try the second card. Different network, different acquirer path; this fixes most one-off declines.
- At a kiosk: order at the counter instead. Kiosk payment stacks are the most foreigner-hostile part of Korean retail.
- Repeated declines at different merchants: check the issuer app for an overseas-payment switch or fraud alert, then contact the number on the card through a trusted channel. Do not assume the merchant can fix an issuer decline. If you need help explaining the problem to staff, try the 1330 Korea Travel Helpline for interpretation, but its call/chat service has had suspensions in 2026, so keep your card issuer’s app or phone line as the main route.
- Card swallowed or lost: call your bank’s emergency line to freeze it, and read the lost-card steps in the emergency guide (https://eroke.kr/korea-emergency-help/).
How much cash to carry
There is no correct number, but a workable pattern for a first-timer in Seoul: keep enough won on hand for a day of market food, T-money top-ups, and one just-in-case taxi ride, and refill from ATMs every few days rather than exchanging a large sum upfront. Currency exchange booths in tourist districts are fine for topping up small amounts; compare their posted rate against your card's rate once and you will know which to prefer for the rest of the trip.
Korean phrases to show
| Korean | Romanization | When to show it |
|---|---|---|
| 해외 카드 되나요? | Haeoe kadeu doenayo? | Do you take foreign cards? |
| 카드로 계산할게요. | Kadeuro gyesanhalgeyo. | I'll pay by card |
| 현금으로 할게요. | Hyeongeumeuro halgeyo. | I'll pay cash |
| 원화로 결제해 주세요. | Wonhwaro gyeoljehae juseyo. | Charge me in Korean won, please |
| 영수증 주세요. | Yeongsujeung juseyo. | Receipt, please |
Transport: where a foreign card is accepted, line by line
The Korea Tourism Organization’s transportation and payment chart is the most specific official answer to “will my Visa work here?” for getting around. Here is what it says, with the workaround next to each no.
| Where | Foreign-issued credit card? | What to do |
|---|---|---|
| AREX, KTX, SRT ticket machines and counters | Accepted (AREX at standard machines, KTX at new machines) | Buy the ticket with your card |
| Single-use subway tickets, Seoul Lines 1–8 | Accepted at the new ticket machines | Fine for a one-off ride |
| Buying or topping up T-money at convenience stores and stations | Not accepted: cash only | Keep some won for top-ups |
| Tapping at AREX card readers | Not accepted | Tap a transport card such as T-money |
| Subway gate readers | The chart points you to a regular transport card, not your credit card | T-money or another transport card |
| City bus card readers | Not accepted, except on Jeju city buses | Transport card |
| Airport limousine buses (on board) | Only on select buses, e.g. K Airport Limousine | Transport card, or buy at the counter |
| Express and intercity bus counters and machines | Accepted; online via Klook or Hanpass | Book ahead in the app if you prefer |
| Taxi card readers; k.ride and Uber Taxi | Accepted | Still carry a backup card |
If your cards keep failing, KTO also lists WOWPASS, a prepaid card for foreigners. It costs 5,000 won, needs your passport, and you load it at a WOWPASS kiosk with won or with foreign currency such as USD, JPY or CNY. It works on public transport nationwide and at affiliated stores, and leftover balance comes back as won cash at a kiosk.
What choosing your home currency can cost: a worked example
This is a hypothetical example with made-up rates, only to show the arithmetic. Your bill is ₩100,000. Assume the card network’s rate that day is 1 USD = 1,350 KRW and your issuer adds a 3% foreign transaction fee.
- Pay in KRW: 100,000 ÷ 1,350 = $74.07, plus 3% = $76.30.
- Accept the terminal’s USD offer at a rate that builds in a 5% markup (1,350 ÷ 1.05 ≈ 1,285.7 KRW per dollar): 100,000 ÷ 1,285.7 = $77.78.
- If your issuer also applies its foreign fee to that USD charge (terms differ, so read yours): $77.78 + 3% = $80.11.
In this example, choosing dollars costs $1.48 to $3.81 more on a ₩100,000 purchase. Over a week of hotel, shopping and restaurant bills, that adds up. The check at the terminal is simple. If the screen shows a dollar (or euro, yen) total, compare its implied rate with the rate in your card app. If you can’t tell, choose won.
FAQ
Does Apple Pay / Google Pay work in Korea?
Apple lists South Korea among its Apple Pay countries and says Apple Pay is accepted wherever the Apple Pay or contactless symbols appear in stores. So look at the terminal rather than the shop sign: if it has no contactless mark, a phone won’t pay. Bus, subway and AREX readers don’t take foreign-card taps either (see the transport table above), so a phone wallet does not replace a transport card. Carry the physical card regardless.
Are American Express and Discover accepted?
KTO names Visa, Mastercard and American Express among the cards that can be used in Korea, but also tells visitors to check before buying because some stores don’t offer card payment. If Amex is your main card, pack a Visa or Mastercard as well so a single network refusal doesn’t leave you stuck.
Should I exchange money at home before flying?
A small emergency amount can reduce arrival-day risk. Compare the total home exchange cost with your card issuer's foreign-ATM fee, exchange margin, and the Korean ATM fee; there is no universally cheapest route.
Can I use my foreign card in Korean apps like Coupang or Baemin?
Usually not — Korean online checkout typically requires local cards and local identity authentication. Order delivery through your hotel, use international platforms, or eat out; do not plan a trip around Korean app payments working.
Official sources
- Korea Tourism Organization — Visit Korea (money & payments): https://english.visitkorea.or.kr/ (새 창 / opens in a new window)
- Korea Tourism Organization — currency and credit-card guidance: https://english.visitkorea.or.kr/svc/contents/contentsView.do?menuSn=374&vcontsId=140040 (새 창 / opens in a new window)
- Korea Tourism Organization — 2026 transportation and payment guide: https://english.visitkorea.or.kr/public/contents/travel/KoreaTransportationGuide_enu.pdf (새 창 / opens in a new window)
- 1330 Korea Travel Helpline (KTO): https://english.visitkorea.or.kr/ (새 창 / opens in a new window)
- T-money (official): https://www.t-money.co.kr/ (새 창 / opens in a new window)
- Financial Supervisory Service (consumer protection): https://www.fss.or.kr/ (새 창 / opens in a new window)
Last verified: 2026-08-13.