Money & payments in Korea

Cards, cash, exchanging money, and the one trap to avoid

Korea is largely cashless — foreign credit cards work in most shops, restaurants, and taxis. But there are a few situations where cash (Korean won) still matters, and one costly mistake almost every visitor makes.

Cards vs cash

• Cards work almost everywhere — big and small shops, convenience stores, taxis, most restaurants. Contactless is common.
• Keep some cash for: traditional markets, small street-food stalls, some family-run places, and topping up your T-money card.
• ATMs marked "Global" accept foreign cards. Bank ATMs may have limited hours late at night.

The DCC trap — never "pay in your home currency"

This applies to card machines and ATMs. If a screen offers "with conversion" vs "without conversion," pick without. Your bank will convert at a better rate.

Exchanging money

• Airport exchange counters are convenient but usually give the worst rates.
• Downtown exchange shops (e.g., Myeongdong in Seoul) often give noticeably better rates for cash.
• For most people, withdrawing won from a Global ATM with a low-fee card is simplest — just decline the DCC "conversion" offer.

Check what you should actually be getting before you exchange — right here:

Everyday payment apps

Once you have a Korean bank account, apps like Kakao Pay and Naver Pay make paying and splitting bills easy. Before that, your foreign card + some cash covers almost everything.

Related guides: Tax refunds for tourists · Your first week in Korea (banking setup) · Getting around & T-money

More on this from opdada: English tools & guides →

💸 Planning how much cash to bring? Try the free Korea Trip Budget Calculator.

Before you fly: a five-minute card checklist

Most payment headaches in Korea are preventable at home. Run through this list the week before departure and you will probably never think about money logistics again once you land.

• Bring at least two cards on different networks — if one gets blocked or a terminal refuses it, the second usually sails through. Keep them in separate bags so a lost wallet doesn't take both.
• Check your foreign transaction fee — some cards quietly add a percentage to every overseas purchase. If yours does, treat it as the backup card, not the daily one.
• Know your PIN — a few terminals and most ATMs will ask for it, and "I only ever tap at home" is a bad discovery to make at a cash machine.
• Tell your bank you're traveling if it still uses travel notices — a fraud freeze on day one is a classic, entirely avoidable mess.
• Add a card to your phone wallet — contactless is widely accepted and noticeably faster at busy counters.

When your card gets declined anyway

Even a good foreign card fails occasionally in Korea, and it's rarely about your balance. Unattended machines are the usual culprits: some ticket kiosks, self-service cafes, and older vending machines only talk to Korean-issued cards. Korean online shopping sites are the other wall — many checkout systems expect a local card or local identity verification, and no amount of retrying changes that.

• First, simply try again, or insert the chip instead of tapping — terminals can be moody about foreign cards.
• If a kiosk refuses you, look for a staffed counter — a human with a card machine almost always succeeds where the kiosk failed.
• Keep your small cash reserve for exactly these moments; it turns a dead end into a shrug.
• For Korean websites that won't take your card, check whether there's an English or international version of the checkout — or just buy the same thing in person.

Paying like a local: small habits that smooth things out

In most casual restaurants you pay at the counter on your way out, not at the table — pick up the paper slip from your table if there is one, or just point to where you sat. And there is no tipping anywhere: not in taxis, restaurants, cafes, or hotels. Leaving extra money mostly creates confusion, and staff may chase you down to return it.

Splitting a bill works differently here too. Rather than asking staff to divide one check five ways, Koreans usually have one person pay while the others transfer their share afterward. As a visitor, the easy version is to take turns paying, or to settle up in cash among yourselves — asking a busy counter to run four cards on one bill is possible in many places, but it marks you as a table to dread.

Mistakes visitors keep making

• Exchanging a big pile of cash on arrival. Korea runs on cards, and most people end up re-exchanging leftover won at a loss on the way home. Change modest amounts as you go instead.
• Pressing "home currency" at an ATM. The DCC markup described above catches people twice — once while shopping, once while withdrawing. The answer is the same at both screens: KRW, always.
• Relying on a single card for the whole trip. A lost wallet or a sudden bank freeze shouldn't end your holiday.
• Letting coins pile up. Spend them topping up your T-money card at a convenience-store register instead of flying home with a bag of metal you can't exchange.
• Assuming every market stall takes cards. Many do now, but plenty of the best old stalls don't — carrying some cash keeps the choice yours, not theirs.

There are five common ways for a visitor to end up with Korean won: change cash at an Incheon Airport bank booth, change it at a licensed money changer downtown, load a WOWPASS prepaid card at a kiosk, withdraw from a "Global" ATM with your home card, or skip cash and pay by card. None of them is free, and the cost is rarely printed as a fee; it usually hides in the exchange rate.

This page compares the five side by side: how each one charges, what you need to bring, when it is open, and what to watch for. Cards, T-money and tipping are covered elsewhere on this page; this section stays on the exchange question only. Exchange rates move every day, so the table describes the fee structure, not a rate you can hold anyone to. Everything was checked against the sources listed at the bottom of this page on 2026-08-23; where two official pages disagree we say so rather than pick one.

How to read an exchange board in ten seconds

Korean boards show two numbers per currency: Buying (what they pay you for your dollars or yen, i.e. what you get when you buy won) and Selling. The honest cost of any counter is the distance between its Buying rate and the mid-market rate you see in a currency app. Divide the difference by the mid-rate and you have the spread as a percentage; that is the only number worth comparing between an airport booth, a Myeongdong shop and a WOWPASS screen. A counter that advertises "no commission" but sits 4% below the mid-rate is more expensive than one charging a stated ₩1,000 on a fair rate. Check the mid-rate in a currency app before you walk up, so you have a reference.

The five options side by side

One figure above is an honest uncertainty rather than a typo: the WOWPASS guide and its FAQ give different membership fees. We list both values and tell you to confirm on site.

Which option for which traveller

If you arrive with cash in a major currency and will spend more than a day or two in Seoul, the cheapest route is usually to change a small amount at the airport (enough for the train, a meal and a T-money top-up) and do the rest at a licensed downtown changer with your passport in hand. If you would rather not carry cash at all, a no-foreign-fee card plus occasional ATM withdrawals costs roughly the network charge and is the least effort. WOWPASS makes sense when you want one card for both payments and transport and do not mind the one-off membership fee; it is weakest for a short trip, where that fee is a large share of what you exchange.

Arriving late at night? Woori has T1 exchange booths listed as 00:00–24:00 on airport.kr. KB's arrivals B-gate booth is listed as 24 h on both KB's page and airport.kr. A Global ATM will do the same job without queuing, as long as you decline the conversion offer.

Two things that are the same everywhere

First, identification: banks, airport booths and licensed changers all ask for a passport (or residence card) before exchanging, so keep it in your hand luggage, not checked in. Second, the currency question on a screen: whether it is an ATM, a card terminal or a kiosk, the cheaper answer is the Korean won option; the "convenient" home-currency conversion is dynamic currency conversion, a markup set by the merchant's side rather than your card network. Rates, fees and booth hours on this page were checked on 2026-08-23 and do change, so treat the table as a map of where the costs hide, and read the screen or the board before you commit.

Sources: KB Think — Incheon Airport currency exchange guide (booth hours, app pre-order eligibility) · KB Kookmin Bank — Incheon Airport exchange booth locations and hours · Incheon International Airport — bank and exchange facilities (hours by bank) · Seoul Metropolitan Government — Currency exchange (hours, ID, USD 10,000 limit) · VISITKOREA — Korean currency and exchange information (old-series banknotes) · WOWPASS — Service guide (fees, limits, currencies, machine locations) · WOWPASS — Official FAQ wiki (membership fee, top-up and withdrawal limits) · GSA SmartPay Smart Bulletin 007 — Foreign currency conversion (Visa ISA and Mastercard cross-border fees, DCC) (checked 2026-08-23)

Written and maintained by OPDADA (Korea) · Last reviewed August 2026 · Spotted an error? Let us know. This page is general information, not medical, legal, tax or financial advice. Rules, prices and schedules change — confirm with the official source before you act.