Payment Systems
What is BKM (Interbank Card Center)?
BKM, short for Interbank Card Center, is a legal entity established in 1990 with contributions from 13 public and private Turkish banks to provide clearing and settlement for cards.
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Credit Card
Differences Between a Credit Card and a Debit Card
Although debit cards and credit cards look similar in appearance, there are fundamental differences between them, from cash advances to installments and security.
Merchant & POS
What Is an MCC Code Used For?
Since the MCC code is a merchant's category code, it's critical for the checks performed during merchant onboarding and authorization, including campaigns and restrictions.
ISO 8583
ISO 8583 Field Descriptions (F18)
F18-MERCHANT TYPE: This is the merchant's category code (MCC) information. It must contain values from the Mastercard or Visa MCC Code list. It is a 4-digit numeric value. For ATM transactions, MCC code 6011 should be sent. The role of MCC in authorization...
Credit Card
Where Can I Make Installment Purchases with My Credit Card?
To pay in installments with a credit card, the card and the POS usually need to belong to the same bank (on-us) or to the same card program. Otherwise, only single payments are possible.
Credit Card
Why do the points I earn differ between transactions made with my card?
You may have noticed that the same transaction amount earns different reward points when paid with a credit card. Have you ever wondered why? The points a card earns are managed within the card bank's authorization system.
Credit Card
What Is a Supplementary Card?
A financial card product issued against a primary card, with its own card number, expiration date, authority, limit, and PIN. Using a supplementary card is ideal for making purchases from more than one card while keeping all spending on a single statement.
Merchant & POS
What Happens Behind the Scenes When a QR Code Is Scanned? | Closed-Loop Payments #2
In the first post I explained what closed-loop payment systems are and how they differ from open-loop ones. Many of the replies I received boiled down to one question: how do these systems actually work behind the scenes once a QR code is scanned?
Credit Card
What Products and Services Does KKB Offer Directly to Members?
KKB was established, under banking law, to enable the exchange of all kinds of information and documents among at least five banks, and it also shares credit information about customers. The Credit Bureau of Turkey also serves deposit banks, participation banks, financial institutions, and more.
Payment Systems
Are Permissions on Physical POS Devices Kept Only on the POS and the Host?
No. Besides the POS and the host, permissions can also be kept in the issuer data. This lets banks, for example, allow installments only for a brand's BINs, or allow mail order for credit cards but not debit cards.
Payment System Institutions
What Is the BKM API?
Thanks to the API developed by BKM, BKM Express member merchants can automatically update the BIN lists of cards issued by all banks in Türkiye and offer installments and reward points more efficiently.
Credit Card
What Should Be Considered When Launching a New Product?
The following steps should be followed when launching a new product: decide on the brand, request a new BIN from the scheme (Mastercard, Visa, Troy), define the BIN in the bank's system, generate keys in the HSM, and roll it out after certification.