Abstract
Currently, all processes take place in the context of the global integration of the financial structure, the economic systems of states are no exception. As we know, a country's development level depends on its institutions. Studying this issue, namely the adaptability of the financial system to the global actions of globalization, we clearly understand the need to consider this issue from focusing on the criterion of stress sustainability. The technological development of these systems within the global economy, of course, implies the diversification of its institutions, which specifically show possible options for setting goals by market participants, moreover, ways and costs in order to achieve these goals. Working in new conditions, market players set the rules of the game, they can be tacitly approved or tacitly applied. Thus, their effect is different for different players, that is, for someone positive, and for another negative. The financial system of the country is defined as the subject of the study. We used the following scientific methods. Namely, a comprehensive system approach, analysis and synthesis, scientific abstraction, dialectical method of cognition and others. We are confident that the conclusions will serve for further development, including theoretical, of the national financial system. Keywords: national financial system, sustainability, criteria, evaluation, quantitative methods, factor analysis, financial stability index.