Main problem: At the present stage of life, Innovations in the financial sector contribute to the optimization of financial intermediation and, in turn, stimulate economic growth. Financial innovations increase the efficiency of the allocation of savings capital to investment capital, as well as increase liquidity in the markets. As the digital economy has developed, the functionality of traditional large financial institutions has been partially replaced by financial technologies (FinTech). FinTech involves the convergence of traditional financial services with mobile services, social media services, big data aggregation and processing, and cloud technologies. Purpose of this article is to identify the main directions of the electronic financial services market in the Republic of Kazakhstan, identify the main problems and prospects for the development of the financial sector of the economy. Methods: The work used general scientific methods of comparative system, vertical and horizontal analysis, structural and functional method, analytical techniques, economic and statistical research methods. The results and their significance: the authors identified the main directions of digitalization of the financial sector of the modern economy, noted the role of FinTech companies and services in both theoretical and practical terms, and provided relevant approaches to the definition of this concept in the economic literature. The main reasons and factors for the development of this direction of digitalization of the financial sector are substantiated, including the concept of financial accessibility, the advantages and disadvantages of FinTech, various approaches to their classification, country and regional characteristics, and an analysis of development trends. The crowdfunding direction of FinTech is noted, approaches to its definition and classification are given, the advantages of the crowdfunding mechanism are revealed, and its role in the modern economy is analyzed. The trend of algorithmic trading development as the most important direction of digitalization of the financial sector is investigated. A detailed analysis of mobile financial services as one of the fastest-growing areas of FinTech is carried out, approaches to their classification are given, factors stimulating the growth of mobile payments, country and regional characteristics are substantiated. The main directions of digitalization of the insurance sector are analyzed, reasonable conclusions about the advantages of InsurTech are made.