Outcome budgeting was announced in the 2017–18 Budget as a reform that aimed to deliver better outcomes for the people of NSW through increased transparency, accountability, and value for money. The reform has been rolled out over several years, with an initial focus on creating a framework, developing performance measures, and piloting the reforms with selected agencies. NSW Treasury is working with agencies to implement the initiative. This audit will examine how effectively NSW Treasury has overseen the implementation of outcome budgeting to ensure that the reform’s policy goals are achieved.