During the last decades the role of the financial and fiscal bureaucracy (e.g. Ministries of Finance, Ministries of Economy and Central Banks) in managing the economy has steadily increased. Despite their growing importance and their role in the emergence of new economic policy ideas, their sustainability and changing the policy, the internal mechanisms of these bureaucracies has not been studied in the scientific literature so far. The present project will try to fill this gap in the scientific research. Firstly, the current project attempts to complement the existing theoretical approaches that explain the changes in the policies, by adding an administrative dimension to them. Secondly, during this project an analytical framework will be worked out that will enable to analyze in more detail the formation, role and effects of the financial and fiscal bureaucracy. Thirdly, during the project empirical research is carried out to study how the prevailing processes, practices and management instruments in the finance and fiscal bureaucracy influence the formation, adoption and implementation of the economic policy ideas.