Abstract: The subject of the study is the sources of financial support for state guarantees of free medical care to citizens in the Russian Federation. Particular attention is paid to the analysis of the composition and structure of the financial support of state guarantees of free medical care to citizens (including the volume of contributions received by the budget of the Federal Compulsory Medical Insurance Fund for working citizens and for non-working citizens). The authors also assessed the potential volume of MHIF budget revenues from the payment of insurance premiums and compared the results obtained with actual data. Research methods used: structural and dynamic analysis, synthesis, comparison, as well as graphical presentation of the results obtained. Based on the results of the study, it was revealed that contributions for the non-working population are paid from regional budgets. Taken together with the use of funds from the federal budget for the implementation of the program of state guarantees for the provision of free medical care to citizens, this allows us to conclude that the budgetary financial mechanism is predominantly used in financial support for the implementation of state guarantees of free medical care to citizens in Russia. In order to maximize the volume of funds for solving problems in the field of healthcare, as well as ensuring their more efficient use, the authors propose expanding the list of objects subject to insurance premiums, as well as a more reasonable approach to establishing various preferential regimes that reduce the volume of budget revenues of the Federal Compulsory Health Insurance Fund. The author’s calculations showed that the actual revenues of the MHIF budget are approximately half of the potential ones.