The study analyses the transition of the East-Center-European and Baltic Countries after the change of the regime up to now. It tries to place these countries in the presented mixed economic models and examines how they comply with the conditions of the sustainable development. The extent of state involvement in the economic and the social processes is key issue because its determines economic growth. The author of the study concludes there is no economic growth without an adequate institutional system and the stability if the state budget. Another conclusion makes it clear that the countries mentioned above cannot be grouped and have met the criteria of sustainability in a specific way so far.