The purpose of this Law is to prevent agreements, decisions and practices that prevent, distort or restrict competition in markets for goods and services, and the abuse of dominance by undertakings that are dominant in the market, and to ensure the protection of competition by carrying out the necessary regulation and supervision for this purpose.
Agreements, practices and decisions that prevent, distort or restrict competition between all kinds of undertakings operating in or affecting the markets for goods and services within the borders of the Republic of Türkiye, the abuse of dominance by dominant undertakings, all kinds of legal transactions and behaviors in the nature of mergers and acquisitions that will significantly reduce competition, and the actions relating to measures, determinations, regulation and supervision for the protection of competition fall within the scope of this Law.
You can access the law from the link below.
https://www.mevzuat.gov.tr/mevzuat?MevzuatNo=4054&MevzuatTur=1&MevzuatTertip=5
Competition law in the payments sector
The Law prohibits companies from fixing prices, sharing markets or abusing their dominant position. In the payments sector, banks' API access, commission rates and conditions for joining systems can be examined from this perspective.
The Competition Authority can carry out inquiries and investigations in the fintech and payments sector. That is why companies are advised to prepare their commercial agreements in line with this framework.
For the details of the Law, the current text on the competent authority's website should be used.
