Korea's public transport is fast, clean, and remarkably cheap, and the single thing that unlocks all of it is a transit card. With one card in your wallet you can ride the subway, hop on city buses, and even pay for some taxis and convenience-store snacks. Once it is set up, getting around stops being something you think about.
The most common card is T-money, with Cashbee as a near-identical alternative. This guide covers how to buy and top up a card, the all-important transfer discount, your payment options, and the monthly passes worth knowing about if you commute a lot. Fares change over time, so confirm current prices with the transit operator.
Getting a T-money card
You can buy a T-money card in minutes:
- Convenience stores (CU, GS25, 7-Eleven, etc.) — ask for a "T-money card." There is a small one-time cost for the card itself.
- Subway station machines and booths — many stations sell and reload cards.
The card is not registered to you, so anyone can use it — handy for visitors, but it also means a lost card is like lost cash. There is no purchase paperwork; you just buy it and load money onto it.
Topping up
You add value (charge) to the card with cash:
- At any convenience store — hand the clerk the card and the cash amount you want loaded.
- At reload machines inside subway stations.
Keep a comfortable balance so you are never stuck at a gate with an empty card. The machines and most clerks can handle this even without much Korean.
The transfer discount — the best feature
Korea uses an integrated fare system across the subway and city buses. Within a set time window after tapping off, your next ride counts as a transfer rather than a brand-new fare. In practice this means:
- Switching between bus and subway is free or very cheap, not a second full fare.
- The total fare is based largely on distance traveled, not on how many times you switch.
This only works if you tap on and off every time with the same card. Pay with cash and you lose the whole benefit.
Your payment options
A plain T-money card is not the only way to ride. Here are the common choices:
| Option | How it works | Good for |
|---|---|---|
| T-money / Cashbee card | Prepaid card you top up with cash | Everyone, especially newcomers and visitors |
| Transit-enabled bank card | Korean check/credit cards with a built-in transit function; charges your account | Residents who want one card for everything |
| Mobile transit (phone tap) | Some phones support tapping the handset at the gate | People who prefer not to carry a card |
| Single-journey ticket | Subway-only paper/plastic ticket bought per trip, with a small refundable deposit | One-off subway rides without a card |
For day-to-day life, a transit-enabled bank card or a topped-up T-money card is the most convenient. If you also want to pay for things by phone, see our guide to mobile payment apps in Korea.
Monthly passes and the Climate Card
If you ride heavily, look into monthly transit passes. Seoul offers a Climate Card, a pass that gives unlimited rides on covered transit for a set period at a flat price, and similar passes exist in various forms. These can save real money for daily commuters, but the price, coverage area, and exactly which transit they include change and differ by region — check the current details with the operator before buying so the pass actually fits your routes.
Planning routes with apps
You will not be guessing where to go. Korean map and subway apps give door-to-door directions, real-time arrivals, and the cheapest or fastest route:
- KakaoMap and Naver Map for full public-transport routing
- Dedicated subway apps for line maps and timing
These are essentials — see our broader list of essential Korean apps every foreigner should install.
Taxis and intercity travel
For taxis, the Kakao T app lets you hail a cab and pay without speaking much Korean, and most taxis also accept transit cards and bank cards. For longer trips, KTX high-speed trains and intercity/express buses connect cities across the country; you book those separately rather than with your T-money card, though the card still gets you to and from the stations.
Wrapping up
Buy a T-money card on day one, keep it topped up, and remember the golden rule: tap on and tap off, every time, especially on buses. Do that and the integrated fare system rewards you with cheap, seamless travel across subway and bus. Pair it with a good map app and you can get almost anywhere in Korea without stress. For emergencies on the move, keep our guide to emergency numbers handy, and browse more in Daily Life & Health.