Getting around South Korea is easy once you understand one simple tool: the transit card. Whether you’re hopping on the Seoul Metro, boarding a bus in Busan, or catching a train to Gyeongju, a rechargeable transit card handles almost every form of public transport in the country. Here’s everything you need to know before you tap your first gate.
What Is a Korea Transit Card and Which One Should You Get?
Korea transit cards are rechargeable smart cards that work on subways, city buses, intercity buses, and even some taxis across the entire country. The two dominant brands are T-money and Cashbee. Both work on virtually the same networks, so either card gets the job done — but T-money has the wider retail presence and is the one most travelers buy first.
You can pick up a basic T-money card at any convenience store: GS25, CU, 7-Eleven, and Emart24 all sell them at the counter. The card itself costs 2,500 KRW (roughly $2 USD), and you load credit separately. Most travelers start with 20,000–30,000 KRW on the card, which covers several days of city transit in Seoul or Busan.
If you want something more practical, consider the WOWPASS or Korea Tour Card, which combine transit functionality with a prepaid debit card. The Korea Tour Card also offers small discounts at select tourist attractions including Gyeongbokgung Palace and Lotte World, making it a popular choice at Incheon Airport’s T1 and T2 arrival halls.
How to Load and Use Your Transit Card
Topping up your transit card is straightforward. You have two options:
- Convenience stores: Hand the card and cash to the cashier at any GS25, CU, or 7-Eleven. Minimum top-up is 1,000 KRW; maximum balance is 90,000 KRW. No app, no registration needed.
- Subway station kiosks: Every Seoul Metro station has green T-money reload machines near the ticket gates. Select English, insert your card, feed in cash (1,000 KRW notes work fine), and tap confirm. Takes about 30 seconds.
To use the card, simply tap it on the yellow or blue card reader when entering and exiting the subway, or tap once when boarding a bus. Always tap out on the subway — failing to do so means you get charged the maximum fare for that line. On buses, tapping out triggers a transfer discount if you switch to another bus or subway within 30 minutes (Seoul) or 1 hour (Busan).
Fare examples to give you a sense of cost: a single Seoul Metro ride within zones 1–2 costs 1,400 KRW with a transit card (vs. 1,500 KRW for a single-use paper ticket). A Busan city bus ride is 1,500 KRW. The transit card discount is modest but adds up over a week of daily travel.
Where Transit Cards Work Beyond the Subway
The transit card’s usefulness extends well beyond Seoul’s subway lines. Here’s where you can use it across Korea:
- Seoul Metro (all lines) and the AREX Airport Express to Incheon Airport — though note the Direct Express train requires a separate ticket purchase.
- Busan Metro (all 4 lines) and Busan city buses, including routes to Haeundae Beach and Gamcheon Culture Village.
- Intercity and express buses at major terminals including Seoul Express Bus Terminal (Gangnam) and Busan Seobu Bus Terminal — check at the counter, as not all routes accept transit cards.
- Kakao T and some regular taxis — many taxis have a T-money reader on the payment terminal. Ask the driver before assuming.
- Convenience store purchases — T-money doubles as a payment method at GS25, CU, 7-Eleven, and Emart24. Useful for late-night snack runs near Hongdae or Myeongdong.
One place where transit cards do not work: KTX and Mugunghwa trains operated by Korail. Those require separate ticket purchases through the Korail website, the 1Rail app, or at station ticket windows.
Getting a Refund When You Leave Korea
If you have leftover balance when you’re heading home, you can get a refund at any subway station customer service center or at convenience stores. The process at a subway station is simple: present your card, and the agent refunds the remaining balance in cash, minus a 500 KRW handling fee. There’s no time limit — a card purchased years ago can still be refunded as long as it has a positive balance.
At convenience stores, refunds are available for balances under 20,000 KRW at the register. For higher balances, you need to visit a subway customer service window. Incheon Airport’s T1 and T2 departure halls both have T-money refund counters near the check-in level — look for the small booths between check-in rows. Bring your passport for amounts over a certain threshold.
If you’re planning to return to Korea, it’s worth just holding onto the card. T-money cards don’t expire, and a card from a previous trip reloads the same way as a new one.
Transit Card Costs, Top-Up Options, and Practical Tips
A basic T-money card costs around ₩3,000–₩4,000 (as of 2026 — verify before visiting) and is available at convenience stores such as CU, GS25, and 7-Eleven, as well as at most subway station service desks. The card itself carries no stored value, so you will need to load credit before your first ride. Top-up machines are located in every subway station and accept cash; many machines now also accept foreign credit cards, though it is worth carrying some cash just in case.
Single subway fares in Seoul start at approximately ₩1,400–₩1,500 for the base distance, with small increments added for longer journeys (as of 2026 — verify before visiting). Using a transit card instead of a single-use paper ticket saves you ₩100–₩200 per ride and, more importantly, unlocks free transfers between subway lines and buses within a 30-minute window — a benefit that paper tickets do not offer. Over a week of sightseeing, those savings add up quickly.
Here are some practical tips to get the most out of your Korea transit card:
- Load at least ₩20,000–₩30,000 at the start of your trip to avoid scrambling for a top-up machine during rush hour.
- Check your balance before tapping out — if your balance runs too low mid-journey, the gate may refuse you and you will need to use an “Insufficient Fare” machine inside the station to add credit.
- Consider a climate card (기후동행카드) if you are staying in Seoul for a month — for a flat monthly fee (around ₩65,000 as of 2026 — verify before visiting) you get unlimited subway and bus rides within the Seoul zone, which beats per-trip costs for heavy users.
- T-money works in taxis too — just tap the reader on the dashboard when you pay. Some drivers prefer it over cash.
- Get a refund before you leave — convenience stores can refund your remaining balance minus a small ₩500 processing fee, so do not leave Korea with a full card.