Indra Perwira, Ali Abdurahman, Mei Susanto
The Executive Office of the President of Indonesia (Kantor Staf Presiden or KSP) as one of the President’s support institutions raises several questions in the Indonesian constitutional system. The main question is whether the KSP established by Presidential Regulation Number 26 of 2015 contradicts the constitutional system? By using the doctrinal method, this article concludes that the establishment of KSP is unconstitutional because the jurisdiction of the KSP overlaps with that of other institutions, which according to Indonesia’s 1945 Constitution and some statutes have to assist the President such as the Vice President, Ministers, and the Presidential Advisory Council. The position of the KSP must be changed to a ministry so that it can perform governmental functions, namely, the enhancement, coordination, and synchronization of government programs.