Assessment of a development stage of a country, as well as determination of existing tendencies, is a sophisticated process, which have been attracted the attention of economists for ages. Nevertheless, nowadays, the uniform methodology for the evaluation of a development stage of a country does not exist. World economists have identified a plenty of factors having more or less significant impact at the economic situation of a country, however, the combination of the mentioned factors depends on the aim of a research. The present paper presents the methodology for the evaluation of a development stage of a country in relation to the EU economic and political processes.