This study aims to analyze the application of the principles of the School Expenditure Management Budget Plan (RAPBS) in improving the quality of education at SMP Negeri 6 Tolangohula. This study uses 5 types of principles of financial management of BOS funds according to Ministerial Regulation No. 6 of 2021. This type of research is descriptive qualitative research. The method used in this research is observation, interview, and documentation.The results of this study are SMP Negeri 6 Tolangohula has implemented 5 principles of financial management of BOS funds properly, in accordance with technical guidelines and legislation on BOS funds, both physically and mentally. Flexibility, Effectiveness, Efficient, Accountability, and Transparency.