The paper deals with the formation of a modern style of financial relations between the European Union and post-Soviet states. The author explores the objectives and features of the implementation of two main components of the European financial policy in the post-Soviet space: investment in the development and commercial activities of private capital. The EU financial policy in the post-Soviet states advances in the context of pan-European humanitarian, geopolitical and energy concepts established at the beginning of the 21st century. Despite certain differences that exist in the approaches of the European Union to dialogue with groups of countries within the frameworks of the Eastern Partnership and the EU Strategy for Central Asia, a common line is seen here on investments in promoting the education, European values, legal standards of banking. At the same time, in relations between Europe and the post-Soviet countries there is a tendency towards the adoption of the principles of financial pragmatism and a desire for long-term investment ties. The expanding role of the European banks and investment companies in economic life in the post-Soviet space is in direct connection with the realization of the modernization potential in post-Soviet states.