Paying for a Seoul city bus by tapping a foreign credit card is planned for 2027, not available today. The Korea Herald reported on Sept 18, 2026 that Tmoney is working with Visa, Mastercard, UnionPay, JCB and Hana Card, with development and testing through the end of 2026. Until then, visitors still need a transit card or another way to pay.
What was announced
The Korea Herald reported on Sept 18, 2026 that Tmoney, the company behind Korea’s transit card, is building an open-loop system in which a bank card can be tapped directly on a reader, using the EMV standard. Seoul city buses are planned for 2027, according to that report. Incheon buses and airport buses would follow later, with no dates given. Development and testing continue through the end of 2026.
Venturesquare, a Korean technology publication, reported on the same day that Visa and T-money are cooperating, that Seoul and Incheon city buses come first and that subways are a later target. It adds that the implementation method and timeline are not yet set.
Where this started
The Korea JoongAng Daily reported on Dec 14, 2025 that the government would study the idea from December 2025 to the end of 2026, with possible implementation from 2027 in phases. The September announcement fits that schedule: the study period ends in 2026 and the first bus rollout is pencilled in for 2027.
| Date | Report | What it said |
|---|---|---|
| Dec 14, 2025 | Korea JoongAng Daily | Government study through the end of 2026, possible phased start from 2027 |
| Sept 18, 2026 | Korea Herald | Tmoney with five card brands, Seoul buses planned for 2027 |
| Sept 18, 2026 | Venturesquare | Visa and T-money cooperate, subways a later target |
What already works
Open-loop payment on public transit began in London in 2012, according to Venturesquare, which is the model Korea is following. Venturesquare also reports that since March 2026 overseas cards are partially supported at card vending machines in the Seoul subway. That is a way to buy a transit card with a foreign card, not a way to tap on a bus.
The reports describe tests and plans. Tapping a foreign card directly on a Seoul bus is not announced as available, so carry a transit card or a way to buy one.
What open loop means in practice
In an open-loop system the bank card itself works as the ticket, so a visitor taps the card they already carry instead of buying and loading a separate transit card. The Korea Herald describes this as tapping a card directly on the reader, using the EMV standard. The practical difference is the queue at a kiosk or convenience store: under the plan, a visitor with a supported card could board a Seoul city bus without stopping to buy a card first. Today that step is still needed.
| Question | Today | Under the 2027 plan |
|---|---|---|
| How do I pay on a Seoul city bus? | With a transit card | Tap a supported bank card |
| Do I buy a separate card? | Yes | Not for supported cards |
| Which brands? | Not applicable | Visa, Mastercard, UnionPay, JCB, Hana Card |
What this means for a visit this year
For a trip before 2027, plan on a transit card. The reports mention card vending machines in the Seoul subway that partly support overseas cards since March 2026, so a visitor can buy a card with a foreign card there. Airport and station kiosks also carry the K-Tour Pass card described in a separate guide on this blog, which is aimed at independent travelers in Busan.
Checking before you travel
- Look at the Tmoney and Seoul transit pages shortly before you travel, since the reports describe a plan that is still in testing.
- Plan to buy a transit card at a subway vending machine, where overseas cards are partly supported.
- Keep some way to pay for buses that is not a foreign bank card in case the tap system is not live yet.
- If you travel in 2027 or later, check whether Seoul city buses accept your card brand: Visa, Mastercard, UnionPay and JCB were the brands named.
- Transit card plan made
- Vending machine support checked
- Backup payment ready
- Card brand compared with the named brands
Frequently asked questions
Can I tap my foreign credit card on a Seoul bus now?
Not according to the reports, which describe a plan for 2027 with testing through the end of 2026.
Which card brands are named?
Visa, Mastercard, UnionPay, JCB and Hana Card, per the Korea Herald.
Which routes come first?
Seoul city buses, with Incheon buses and airport buses later without dates, according to the Korea Herald.
What about the subway?
Venturesquare reports subways as a later target, and says overseas cards are partly supported at subway card vending machines since March 2026.
Who is behind the system?
Tmoney, which is cooperating with Visa according to Venturesquare, and which the Korea Herald says works with four international brands and Hana Card.
Sources
- Korea Herald: Foreign cards on Seoul buses (Sept 18, 2026)
- Venturesquare: Visa and T-money cooperation (Sept 18, 2026, in Korean)
- Korea JoongAng Daily: Visitors may be able to use overseas cards for public transport (Dec 14, 2025)
Dates and details checked against these pages on Oct 27, 2026. Weekdays were confirmed with a calendar calculation.