The purpose of the study is to assess the effectiveness of the achieved level of integration of the leading countries within the framework of the Eurasian Economic Union (EAEU).Methodology: a quantitative approach is used. Based on the results of the analysis of dynamic series, the mutual openness of country economies and their mutual trade is estimated by the methods of calculating the export quota, which shows the content of exports in the volume of gross product. A broader analysis of integration interaction involves the study of other equally important indicators. Thus, the indicators of the importance of mutual trade in goods and services, mutual labor migration for the leading countries of the Eurasian Economic Union and mutual flows of foreign direct investment for Kazakhstan within all the countries of the EAEU were also used and mutual FDI flows for Kazakhstan within all EAEU countries were also used.The originality / value of the study lies in the coverage of the last years of the Eurasian integration, the calculation of indicators of the significance and evaluation of the effectiveness of foreign economic relations in their main areas in the Eurasian integration grouping for its leading countries.The results of the study – in 2015-2019, there is an achievement of relative openness and an increase in the importance of trade in goods and services, a decrease in the importance of migration between Kazakhstan and the main participants of the EAEU. At the same time, the flows of foreign direct investment to and from Kazakhstan within the union are characterized by positive changes.
