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FAST
The Central Bank of the Republic of Turkey (CBRT) has implemented a significant limit increase in the FAST system. Under the regulation effective August 26, 2026, the FAST money transfer limit was raised from TRY 100,000 to TRY 300,000. The same increase also applies to Request to Pay...
EMV
DAC is the abbreviation for Data Authentication Code. It is a piece of data assigned by the issuer and held by the terminal during the Signed Static Application Data verification process.
Merchant & POS
Contains the terminal-resident data objects (tags and lengths) that the ICC needs when processing the GET PROCESSING OPTIONS command. In short, it is the list of information the card requests from the terminal before starting the transaction.
Payment Systems
Here are the Mastercard and Visa chargeback reason codes that require a cardholder letter and/or supporting documentation, with their descriptions.
EMV
The Lower Consecutive Offline Limit is the maximum number of consecutive offline transactions allowed by the ICC application, as set by the issuer, on a terminal capable of going online. It is sent in tag 9F14.
Payment Systems
The BRSA has published a draft amendment to the regulation on remote identification methods used by banks and electronic contract relationships. It extends remote onboarding to legal entities, including MERSIS-based verification of representatives.
Debit Card
When we think of online shopping, we usually picture paying with a credit card. But can customers without a credit card, only an ATM card, shop online? Of course they can — you don't need a credit card to enjoy the convenience of e-commerce.
Payment Systems
According to the Banks Association of Turkey, collusive transactions that misuse POS devices, debit cards, or credit cards for purposes other than their intended use are called fictitious transactions - in short, transactions used outside their intended purpose.
Payment Systems
Every payment transaction completes in seconds, yet dozens of controls run behind the scenes. This post covers the precautions for authorization and clearing, the critical role of reversals, and the financial loss scenarios most often seen in the field.
Credit Card
The Payment Card Industry Data Security Standard (PCI DSS) is a technical and operational standard created by the PCI Committee, formed by internationally recognized payment brands, to ensure data security in card payment systems.
Merchant & POS
Onboarding refers to all the practices that help a customer learn to use a product or service for the first time. In payment institutions, it covers verifying a customer's information and documents during merchant application.
Security
The TBB book 'Fraud Detection and Prevention Methods in Banking' analyzes the types of fraud threatening the banking and finance sector and individuals, with examples from the world and Turkey, and offers protection recommendations. This post explains how to access it.