Seoul T-money Card Guide 2026: Where to Buy, Top Up, and Get a Refund

Picture this: you've just landed at Incheon International Airport after a six-hour flight from Singapore — or Manila, or Kuala Lumpur. You're tired, your bags are heavy, and you just want to get to your hotel. The last thing you want is to figure out how to pay for the airport train while a queue builds behind you.

A T-money card solves all of that in one tap. It's Seoul's rechargeable transit card, accepted on every subway line, every city bus, and most airport buses across South Korea. Without one, you pay full fare on every single ride with zero transfer discounts. With one, you tap and go — and the savings add up fast.

Here's everything you need to know before you land.

How much does T-money actually save you?

Seoul's public transport is already affordable by Southeast Asian standards. The base fare on the subway and city buses is 1,500 KRW (roughly USD 1.10) as of 2026. But the real saving is the transfer discount.

When you switch between the subway and a bus — or bus to bus — within 30 minutes, the additional charge drops to around 100 KRW instead of a full new fare. You can use this benefit up to 21 times a day. Without a T-money card, you pay the full base fare every time you board. No exceptions, no discounts, and getting change from a bus driver is rarely straightforward.

For context: a round trip from Hongdae to Myeongdong with one transfer costs under USD 2.50 with T-money. Without it, you'd pay roughly double.

Where to buy your T-money card

The easiest place is right at Incheon International Airport, before you even reach the train platform. Convenience stores — GS25, CU, 7-Eleven, and Ministop — are on the B1 arrivals level of both Terminal 1 and Terminal 2, visible as soon as you exit baggage claim. Dedicated transit card vending machines sit in the same area. You can have your card in hand within five minutes of landing, well before the walk to the airport rail platform.

The card costs 2,500 KRW (about USD 1.80), which includes a refundable 500 KRW deposit. You'll want to load extra credit on top — see below for how.

Already in the city? Any GS25, CU, 7-Eleven, or Ministop will sell you one. They're on almost every Seoul block, so you're never far from one.

How to top up

There are two easy options:

• Subway station top-up machines — at every station entrance. Menus are available in Korean, English, Japanese, and Chinese, so language is no barrier.
• Convenience store counters — hand your card to the cashier and say how much you want to add.

The minimum top-up is 1,000 KRW and the maximum balance is 900,000 KRW — far more than you'd ever load for a holiday. For a week of active sightseeing with four to six trips a day, loading 30,000–50,000 KRW (USD 22–36) is a comfortable buffer.

Watch your balance: if your card hits zero at the gate, you won't get through. The remaining balance shows on the screen every time you exit a station, so check it before you head to a new area. Keep at least 300 KRW available at all times.

Where T-money works — more than just the subway

T-money is more versatile than most visitors expect:

• Seoul subway — all lines
• Seoul city buses — including night buses
• Airport buses — most routes between Incheon or Gimpo Airport and central Seoul
• Some taxis — look for the T-money sticker on the dashboard before you get in
• GS25 and CU convenience stores — handy for drinks and snacks between sightseeing stops
• Other Korean cities — the same card works on public transport in Busan, Daegu, Gwangju, and Incheon

Planning a side trip to Jeju Island? T-money works on most city buses there too, though a handful of rural routes are still cash-only — keep a small amount of Korean won on hand just in case.

Getting a refund before you fly home

You can refund your remaining T-money balance at any convenience store before leaving Korea. Hand the card to the cashier; the refund is processed on the spot. A small handling fee of around 500 KRW applies, and your original 500 KRW card deposit is returned as well.

If you're planning to return to Korea, it's often easier to keep the card. There's no expiry date and any loaded balance carries over indefinitely.