Seoul Bus Tag-Out Rules: Transfers, Fares & 30x Fines

Seoul’s buses run on trust more than the subway does. There are no gates, just a card reader by the driver and another one or two by the back door. That makes it easy to pick up bad habits. Some visitors never tap out, some pile on through the back door at a crowded stop, and some don’t know that half the fleet no longer takes cash. None of this is likely to get you arrested. It will cost you money, though, and sometimes an awkward talk with a driver. Here’s how the rules actually work, based on Seoul city’s own fare pages and the bus operating terms.

How much is a Seoul bus in 2026?

Short answer: ₩1,500 for adults on blue and green buses, by card or cash. Fares haven’t changed since August 12, 2023.

Seoul bus fares, September 2026 (₩, transit card / cash)

Two details catch visitors. First, the youth fare only applies to a 청소년 교통카드 youth card that has been registered. A teenager tapping a regular adult T-money pays the adult fare unless the driver changes the fare type (more on that below). Second, a Seoul bus ride on its own is a flat fare, however far you go. Distance only starts to count once you transfer, when the whole trip is priced as one journey: the base fare covers the first 10 km (30 km for red buses) and each extra 5 km adds ₩100.

For the full history of how fares got here, see 52 years of Seoul transit fares. If you don’t have a card yet, start with the T-money card guide.

What happens if you don't tap out on a Seoul bus?

Short answer: nothing happens on the bus itself, but your next ride costs more. Seoul breaks your transfer at the leg you didn’t tap out of and charges a full base fare on the next ride. If that leg was a transfer, it also bills the base fare you didn’t pay for it.

Seoul’s transfer page puts it like this: because the system calculates distance from where you tapped on and off, “if you don’t tap out, the transfer is cut off from that ride, and on your next boarding the untagged ride is treated as a single trip and the uncollected base fare is charged.” That second part is the one people don’t expect. Here’s what it looks like in practice:

What a missed tap-out costs (adult T-money, SeoulWindow worked examples from Seoul's published rules)

The transfer top-up in the first row is because a transfer charges the higher of the two base fares, so going from a ₩1,500 bus to a ₩1,550 subway costs the ₩50 difference, plus ₩100 per extra 5 km if the whole trip passes 10 km.

One more timer: if more than 5 hours pass between tapping on and off a city bus or the subway (1 hour on a village bus), the base fare is charged again when you tap out. You won’t hit that on a normal ride, but it’s why a card left “on board” from yesterday can act strangely.

How do transfers work on Seoul buses?

Short answer: tap out, then board your next bus or train within 30 minutes (60 minutes from 9 pm to 7 am). You pay only the distance top-up, for up to 4 transfers.

The rules that trip people up:

• The clock starts when you tap out, not when you tapped on. The window depends on when you board the next ride, so a bus boarded at 6:50 am still gets the 60-minute window.
• Same route or same bus doesn’t count. Getting off the 7016 and back on the next 7016 is a new fare. So is hopping back onto the same bus.
• Taxis are outside the system. So are the airport limousine buses, which are priced separately.
• One card per person for a transfer to the subway, even if the bus let you pay for two (see below).

Can two people share one card on a Seoul bus?

Short answer: yes, and this is where the bus differs from the subway. Tell the driver the number of people before you tap, and the driver sets the reader to take several fares from one card.

Seoul’s transfer page says it directly: on buses, “the driver can operate the reader to change the number of passengers and fare type (for example, paying a youth fare with a regular card), but this cannot be transferred to the subway.” It adds that a group paying on one card keeps the transfer discount on the next bus only if the same number of people carry on together, and that you have to tell the driver it’s a group each time you board. The 다인승 multi-passenger setting is the reason tapping out still matters for groups. Tap once when you leave and the reader handles the whole group.

In practice, hold up fingers or say “du myeong” (두 명, two people) or “se myeong” (세 명, three) before you tap. For kids, “eorini” (어린이, child) gets the driver to switch the fare type. Drivers deal with this constantly. Just do it before the reader beeps, not after.

Can you still pay cash on a Seoul bus?

Short answer: on some buses, but fewer every year. Seoul’s January 2026 list has 183 routes that take no cash at all. On buses that still take cash, adults pay the same ₩1,500, but with no card there’s nothing to carry a transfer discount.

The city began its 현금 없는 버스 (cashless bus) program with 18 routes and had 108 by March 2023, about a quarter of the fleet at the time. The January 2026 list reaches 183, out of 396 city bus routes. The list includes several routes travelers actually use: the Namsan circulars 01A and 01B, the 5712, 6713 and 8773, which end at Hongik University Station, and the 7022 and 9401, which run to Seoul Station. If you board one without a card, Seoul’s approach has been to hand you a slip with a bank account for transferring the fare later, which is close to impossible without a Korean bank account. Get a T-money before your first bus.

Coming soon, reportedly: Newspim and other Korean outlets reported in September 2026 that T-money and Hana Card plan to accept tap-to-pay Visa, Mastercard, UnionPay and JCB cards on Seoul city buses from January 2027, with the subway to follow later. Until that actually launches, a foreign bank card won’t work on the bus reader. Seoul is also piloting “tagless” boarding on 36 routes, but it needs the Korean Mobile T-money app on an Android phone, so it doesn’t help most visitors yet.

How much is the fine for fare evasion on a Seoul bus?

Short answer: the fare plus 30 times the fare, paid in cash. That’s ₩46,500 on a ₩1,500 bus.

₩46,500 on a ₩1,500 bus

The basis is Article 13-2 of the Seoul city bus operating terms (시내버스 운송사업 약관), as summarised by the Ministry of Government Legislation’s Easy Law service. It lists four kinds of bus fare evasion:

What counts as fare evasion on a Seoul city bus (Operating Terms, Art. 13-2)

If you don’t pay the surcharge, the operator can report you to police. Under the Minor Offenses Act (Art. 3(1)39), riding without paying carries a fine of up to ₩100,000, detention or a petty fine. Using someone else’s lost senior card can be charged as embezzlement of lost property.

How often does this actually get enforced? Seoul’s subway publishes annual numbers, about 53,000 cases a year, but we couldn’t find a published count for Seoul buses. Bus enforcement mostly means the driver asking you to pay, plus inspection teams. When Seoul introduced the 30x surcharge for buses in 2012, the Hankook Ilbo reported that 66 operators took part and inspectors targeted rush-hour routes with a lot of back-door boarding. That’s still the scenario most likely to get you questioned.

Red buses, standing and seats

Red metropolitan buses (₩3,000) run from Seoul out to Gyeonggi and Incheon, many of them on expressways. After the October 2022 Itaewon crowd crush, Asia Economy reported that one large operator group began strictly enforcing a no-standing rule on 146 routes, so when the seats are full the driver can refuse to let you on. Gyeonggi has also run app-based seat reservations on some commuter routes at the regular fare. For a day trip, board at the first stop or outside rush hour. For suburban trips where a paid shuttle might be easier, see shuttle buses from Seoul to the suburbs.

Seoul buses are cheap and go almost everywhere the subway doesn’t. Most of the extra fares people pay come from skipping a two-second tap on the way out. For the train version of these rules, see KTX and Korail fare evasion. If you’re traveling with older family, how Seoul’s seniors get around by bus and subway explains who rides free and where.