Get 15% discount and redeem cash back up to 15% at FIRSTER.com or FIRSTER mobile app with KTC credit card

15% Discount terms and conditions

1. This promotional campaign (“Promotion”) is provided by Krungthai Card Public Company Limited or KTC to offer the exclusive privileges to members of KTC credit card (“Cardmember(s)”) who spend on card at participating stores during January 1^st , 2026 – June 30^th , 2026 (“Promotion Period”) according to specified terms and conditions only.
2. The cardmembers who shop with the card according to specified conditions via www.firster.com and FIRSTER BY KING POWER Application, cardmembers will get discount up to 15% (no minimum spending required). Fill in promo code “KTC1525” only participating products only.
3. This promotion cannot be used in conjunction with any other promotions code.
4. The discount code cannot be exchanged or redeemed for cash.
5. No limit on the number of redemptions throughout the campaign period.
6. Customers need to  log in before placing an order.
7. For more information, please contact FIRSTER Call Center at 02-677-8799, Monday–Friday, 09:00–18:00 (excluding Saturdays, Sundays, and public holidays). Email: support@firster.com

Terms and conditions for Credit Cash Back

1. This promotional campaign (“this promotion”) is provided by Krungthai Card Public Company Limited or KTC to offer the exclusive privileges to the cardmembers of KTC credit card (“a cardmember”) who have KTC FOREVER points (“KTC Points”) and spend with KTC credit card (“a card”) at participating stores during 1 January 2026 – 30 June 2026 (“promotion period”) according to specified conditions only.
2. The following cards are not eligible in this Promotion : all types of KTC CASH BACK, KTC - THAI RED CROSS NATIONAL BLOOD CENTRE, KTC VISA CORPORATE and KTC GOVERNMENT SERVICES card
3. To be eligible to participate in this Promotion, Cardmembers must register successfully by sending a SMS, text CMT , <space> followed by 16-digit credit card number and # and point amount to redeem and send to 0613845000 (SMS fee as specified by network service provider), or by registering at www.ktc.promo/cosmetic within the day that card transaction has been made, and receive the confirmation message from KTC.
4. Cardmembers who spend on card from 1,000 – 3,499 baht per sales slip, will be redeem KTC FOREVER at minimum of 1,000 points, up to the total transaction amount for cash back 12% as specified in the terms and conditions or Cardmembers who spend on card from 3,500 baht per sales slip or more, will be redeem KTC FOREVER at minimum of 1,000 points, up to the total transaction amount for cash back 15% as specified in the terms and conditions.
5. If the registration has been made more than 1 time, only the first successful registration will be considered by KTC.
6. If Cardmembers have more than 1 card registered for participating in this Promotion, KTC will calculate cash back value based on the spending amount from each registered card separately.
7. If Cardmembers have cancelled any registered card for whatever reason, it shall be deemed a waiver of their right for participating in this Promotion.
8. This Promotion is reserved for the payment of goods/services per 1 sales slip only. The transaction cannot be split into multiple transaction to receive the privileges hereunder
9. KTC will credit cash back to Cardmember’s card account within 60 days after the end of each calendar month. In this regard, KTC will calculate the spending amount starting from the day of successful registration to participate in this Promotion until the end of month.

"General Terms and Conditions” Promotion

1. Privileges under this promotion cannot be exchanged, changed to cash, or transferred to any other party.
2. Privileges under this promotion are exclusive for cardmembers with normal account status and have no record of default or overdue payment throughout the promotion period until the day on which such privileges are granted to cardmembers, based on KTC’s existing record.
3. KTC reserves the right to offer, cancel, revoke or recall any privilege under this promotion, wholly or partially, including the claim of compensation for damages (if any) if fraudulent activities are committed in order to receive the privileges under this promotion, or if the card is used for any commercial purpose, in breaching of the specified terms and conditions, or for any non-consumption purpose, or when the transaction is cancelled after KTC has granted the privileges under this promotion to cardmembers.
4. KTC reserves the right to exclude interest, fee, fine, any other fees and charges, cancellation of goods/services purchased or any other refund, from the calculation of privileges offering to cardmembers under this promotion.
5. Other terms and conditions which are not specified herein shall be provided by any relevant store/seller/service provider. Please inquire for details of conditions before purchasing goods/services.
6. KTC is not a manufacturer, distributor or service provider and has no involvement regarding any goods/services under this promotion. Should there be any inquiries or claims in respect of goods/services, or sales slip/tax invoice requirement, please contact the manufacturer, distributor and/or the owner of product or service directly.
7. For more information, please call KTC PHONE 02 123 5000