KTC will be enhancing the Payment Gateway system on Thursday, June 18, 2026, from 12:00 AM to 2:30 AM. During this period, KTC cardmembers and merchants will be temporarily unable to access the Payment Gateway and related online payment systems.
For assistance, please contact:
• Customer Service Center at KTC PHONE 02 123 5000
• Merchant Service Center Tel. 02 123 5700
We apologize for any inconvenience this may cause.
