KKB is the abbreviation for Credit Registration Bureau (Kredi Kayit Burosu). KKB is a private company established in 1995 with nine shareholders, in accordance with Banking Law No. 5411.

Logo or illustration representing the Credit Registration Bureau (KKB) in Turkey

Under the Banking Law, KKB was established to enable the exchange of all kinds of information and documents among at least five banks, and it also shares customers' credit information. In addition, the Credit Registration Bureau provides services related to deposit banks, participation banks, financial institutions, insurance, private pensions, and capital markets.

KKB has nine shareholders. These shareholders are: Akbank, Denizbank, Sekerbank, Ziraat Bankasi, Garanti Bankasi, Halk Bankasi, Is Bankasi, Vakiflar Bankasi, and Yapi Kredi Bankasi.

In 1999, the Credit Reference System (KRS) was established by KKB. Using modern technological methods, the Credit Reference System shares detailed information about customers' individual credit products among its member institutions in order to determine the customer's risk factor and reduce the risk exposure of its members.

Banks, as well as financial leasing, factoring, and forfaiting companies, finance institutions, and consumer finance companies can become members of the Credit Registration Bureau, and it currently has 113 members.