The T-money Card: How to Buy, Top Up and Use It

If you do exactly one piece of transit homework before Korea, make it this: get a T-money card within an hour of landing. It's a small rechargeable card that pays for subways, buses and taxis in Seoul and almost everywhere else in the country, plus convenience-store purchases when you don't feel like fishing out cash.

Before you start

Two things trip people up, so let's clear them first:

1. The card price and the balance are separate. Paying ₩3,000 for the card gets you a card with ₩0 on it. You still need to load money.
2. Cash is king for top-ups. Foreign credit cards usually can't reload a T-money card. Keep some won on you for charging it.

What you need

• About ₩2,500–4,000 for the card itself (plain designs are cheapest; character and collab designs cost a little more)
• Cash for your first top-up — ₩10,000 is a comfortable start for a few days of subway rides
• Nothing else. No ID, no registration, no app.

Step-by-step

1. Find a convenience store. GS25, CU, 7-Eleven or Emart24 — there's one at the airport and roughly one on every block after that. The cards hang near the register; just point if in doubt.
2. Buy the card, then ask to top up. Say "충전해 주세요" (chungjeon-hae juseyo — "please charge it") or simply hand over the card and cash. Subway station machines also do top-ups and have an English menu.
3. Tap in, tap out. On the subway, tap the card reader at the gate on the way in and out. On buses, tap the reader by the front door when boarding — and tap again at the rear door when getting off if you plan to transfer.
4. Watch your balance. The gate display shows your remaining balance every time you tap out. When it dips below ₩1,550 (one subway base fare), top up.

What it costs

• Card: ₩2,500–4,000 one-time (as of 2026)
• Subway base fare in Seoul: ₩1,550 with the card vs ₩1,650 for a single-ride ticket — the card saves ₩100 every ride before you even count transfers
• Top-ups: any amount from ₩1,000 to ₩90,000 per charge

The real money-saver is the transfer discount: tap off a bus or subway and onto the next leg within 30 minutes, and the system treats it as one journey instead of charging a fresh base fare. Single-ticket riders never get this.

Common problems (and fixes)

• "I forgot to tap out of the bus." You'll be charged as if you rode to the end of the route, and you lose the transfer discount. Make tapping out a habit.
• "The gate rejected my card." Nine times out of ten it's an empty balance. Top-up machines are inside every station, before the gates.
• "Can I share one card with my partner?" No — one card per person, because the system tracks each traveler's transfers. Kids' and youth discount cards exist but require registration.

Good to know

• The same card works in Busan, Daegu, Daejeon, Gwangju and most intercity buses — buy once, use nationwide.
• Taxis accept T-money, though drivers are just as happy with credit cards.
• Convenience stores accept T-money as payment, which is the classic way to burn a leftover balance on your last day.
• Once you're comfortable, read our Seoul subway guide to put the card to serious work.