The challenges of economic globalization, recession, and the essential changes in market conditions, as well as the financial institutionalization, determine the expediency of the new studies to explore the impact of fiscal instruments on the dynamics of economic growth and social stability. This paper examines the role of fiscal policy in the economic growth ensuring in advanced and emerging market economies over the period from 2001 to 2015. The research indicates the growing role of the state (in general) and the budget (in particular) in regulation of social and economic processes. Based on the methods of economic regression, the interrelations between government spending and GDP growth in different groups of countries were evaluated. The study emphasized the directions to increase the positive influence of budget policy on economic development for countries with emerging market economies. This can be achieved by harmonization of the tax burden and structure, improving the use of budget funds, conducting structural optimization of budget expenditures, further development of financial and budget institutions, implementation of the fiscal constraints and rules while forming the basic indicators of fiscal policy.