Effective and efficient organization of public administration and reorganization is one of the goals of policy–makers and practitioners. This paper examines the processes of reorganization in the State Revenue Service in Latvia as a tool for authorities to achieve strategic objectives in order to make proposals for the planning activities of structural reforms. The aim of this study is to examine the processes of reorganization in the State Revenue Service (SRS) as a tool for authorities to achieve strategic objectives in order to make proposals for the planning activities of structural reforms. The research is mainly based on the monographic descriptive method as well as the methods of analysis and synthesis. Main results are related with identification of procedures and approaches for reorganization and structural changes in tax and customs administration. It can be concluded that for the organisational structure, which is modelled according to the processes linked with units, it is possible to make precise analysis showing how the reorganization process will change performance indicators and to clarify important factors. This research identifies need for the internal regulation and the respective procedure for implementing structural changes is described in the paper.