The aim of the thesis is the study and development of methodological, theoretical and practical foundations of statistical study of financial systemy. Object of study is a set of fields and parts of the financial system of Ukraine. The subject of the study is methodological, scientific and practical principles of the statistical study of the financial system. Methods: historical, logical, observation, comparison, generalization, analysis, synthesis, solid, selective, time series analysis, analysis of relationships. Scientific novelty lies in the development of methodological and organizational and methodological foundations of statistical study of the financial system of the state. First: Nomenclature - developed financial services; - developed statistical indicators of state budget funds, to assess the financial activity, financial stability and effectiveness of their activities; - defined and adapted to the conditions of Ukraine methodological approaches statistical analysis of stability of the financial system , developed and tested system of indicators and indicators that signal the onset of financial instability ; The proposed methodology , measurement services of financial intermediaries. Improved: information support statistical study areas of the financial system; and methodological approaches to the compilation of the financial accounts of the SNA in the implementation of the classification of financial instruments derivatives of determining the order of their registration; and methodological principles of construction of government finance statistics through its harmonization with international standards of accounting budgeting, improving budget classification; -system of statistical indicators of effectiveness of budget system state, signaling the approach, methodology of forecasting financial volatility using warning signal light and the advantages of its use. We got further development: theoretical foundations of statistical analysis of the financial system in the development of new statistical assumptions of the theory of finance; methodological regulations , guidelines , etc.; methodological and organizational framework for the formation of high-quality statistics for each institutional sector; and methodological support comparison of the structure of the section "Financial Activities" CTEA ( DK 009:2005 ) and the section "Financial and insurance activities " new edition CTEA ( DK 009:2010 ). The survey results are embedded in activity: the State Statistics Service of Ukraine (№ 14.5-08/200, 28.05.13), the State Employment Service of Ukraine (№ DTS-14-4174/0/6-13 , 7/15/13 ), Ministry of Agriculture and food of Ukraine (№ 37-11-15/25582, 12.12.13) , and others. , and the learning process of the National Academy of statistics, Accounting and Auditing (№ 442, 05.31.13 ).