The purpose of the article is to study the theoretical foundations and practical aspects of the justification of the peculiarities and identification of problems of institutional stability of public administration in the conditions of increasing economic and legal challenges and threats of the financial and economic and socio-political crisis of Ukraine. Based on the results of the conducted research, it can be stated that in the conditions of the strengthening of the financial and economic and socio-political crisis, there is an aggravation of the negative impact of economic and legal challenges and threats that significantly unbalance the institutional stability of public administration. The article analyzes the main scientific approaches to determining the essence of the institutional stability of public administration, identifies the main factors that have the most destructive effect on the public administration system, identifies the most important problems of the institutional stability of public administration, and finds out that they increase their destabilizing influence in the period of aggravation of economic and legal challenges and threats of the financial and economic and social-political crisis. Empirical evaluations of the Integral indicator of public administration in Ukraine for the period of 2018–2021 were carried out according to such subindexes as "implementation of the right to vote in the state and accountability", "government efficiency", "political stability and absence of violence", "quality of legislation", "the rule of law" and "corruption control", as a result of which their critical values were established, which lead to a significant imbalance of the public administration system, to the deepening of social tensions and to the exacerbation of crisis situations. The main measures to increase the institutional stability of public administration are proposed, among the most significant of which are the formation of a special mechanism for forecasting risks, threats and dangers to the system of public administration, taking into account crisis situations and the strengthening of financial and economic and socio-political challenges; improvement of current domestic legislation and its harmonization with the norms of European and international law; development of an effective anti-corruption mechanism and its legislative regulation.
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