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Recurring card payments and subscriptions illustration

Merchant & POS

What Is Recurring Billing?

Recurring billing is the automatic collection of payments at set intervals and amounts by storing the customer's card details on a secure, PCI DSS-certified infrastructure.

Illustration representing the products and services KKB offers directly to its member institutions

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.

BKM Online member information sharing portal

Credit Card

What Is BKM Online (BOL)?

BKM Online is the web-based electronic system that enables communication and information sharing between BKM and its members, including documents, reports, services and work calendars, according to user permissions.

Table showing service code values and their meanings for payment cards

Credit Card

What is the Service Code on Cards?

The service code is information printed on a card's Track 1 and Track 2 data, covering card type, PIN usage, and domestic/international usage status. It is kept at the product level in bank systems.

Comparison of CVV security code locations on a standard card and an American Express card

Credit Card

Is the CVV/CVC Code Always 3 Digits?

First, let's briefly explain CVV/CVC. CVV stands for Card Verification Value, a term used for Visa. CVC stands for Card Verification Code, a term used for MasterCard. The CVV/CVC code is used for cardholder verification and to reduce fraud risk.

Illustration representing the advantages and disadvantages of credit cards

Credit Card

What Are the Advantages and Disadvantages of a Credit Card?

Credit cards can be a convenient way to manage income and expenses, but for those who don't know how to use them, they can become an expensive and risky product. Here are the key pros and cons to weigh before applying for one.

Credit card limit and over-limit spending illustration

Credit Card

Do I Pay an Extra Fee If I Exceed My Credit Card Limit?

If you exceed your limit by no more than 20% and close it in the next statement period, no more than twice a calendar year, only contractual interest is charged on the excess amount. You pay no additional fee.

Illustration of a marketplace solution connecting multiple online marketplaces and sellers

E-commerce

What Is a Marketplace Solution?

A marketplace solution is a service offered by software that enables communication and data exchange between different marketplaces. It is a multi-vendor online shopping infrastructure, including the payment system, for listing, searching and buying products and services.

Diagram of basic payment systems terminology including issuer, acquirer, and authorization

Payment Systems

Basic Terms Used in Payment Systems

Although many important terms are used in payment systems, the expressions below are its cornerstones — the ABCs of payment systems, so to speak. Issuer: the credit card company, usually a bank, that issues the card and tracks debt, credit, bonus points, and other services for the customer.

Diagram illustrating the PIN Try Counter concept on a payment card chip

Credit Card

What Is PIN (Personal Identification Number) Try Counter?

The PIN Try Counter is a value stored on the card's chip showing the number of remaining offline PIN attempts. Each incorrect offline PIN entry decreases it by 1, and it resets when the correct PIN is entered.