Object - the process of financial securement of national economy modernization. Aim - development of theoretical organizational concepts and practical recommendations for improvement of financial securement mechanism from various resources owners for modernization of national economy. Methods - dialectical and historical, systemic, systematically structural, comparative legal, analysis, synthesis, comparison, selection, grouping, graphic. Results - deepening theoretically methodological provisions aimed at practical problem solving of financial resources consolidation to finance projects of modernization of the national economy. Novelty - for the first time disclosed the essence of the concept of "consolidation of financial resources for national projects to modernize the economy", which is suggested to interpret in the context of a complex process that combines interrelated stages: initiation, selection, approval of national modernization projects; definition of methods, tools, their sources of funding; consolidation of financial resources from resources owners of various sectors to achieve specific goals, improved conceptual approaches related to examination processes of formation and use of financial resources in the country, which are based on the analysis of: consumer spending and savings; capital expenditures of the budget; income, depreciation, capital and financial investment of the companies; resources of the banking system and financial institutions; non-government pension funds, collective investment institutions; issue and circulation of securities. The scientifically-methodical approaches of the State financial support for investment projects were developed. It was explained the theoretical basis of the legal regulation of financial security to modernize the economy, which is to legally establish economically justified financial ratios targeting to attract the resources of banking and non-banking financial institutions to finance modernization projects, clarified the nature and content of economic modernization, through a combination of financial, economic, productional, institutional, organizational and social aspects of its implementation. It was further developed the approaches to create institutional frameworks for consolidation of financial resources for the modernization of the economy on the basis of the State Development Bank and the determination of its role as the main financial administrator of the funds of consolidated resources. In addition, it was developed the scientific and methodological approaches for analytical evaluation of the need to modernize Ukraine's economy on the basis of the proposed indicators. The implementation of key ideas in practice were at the Accounting Chamber of Ukraine, the Institute of Strategic Evaluations. the company "Blitz Pack" PJSC "Blitz-Inform". Area of usage - activities of the Ministry of Finance of Ukraine, Ministry of Economic Development and Trade of Ukraine, the Committee of Verkhovna Rada of Ukraine on construction, regional policy and local self-government.