This paper provides an analysis of the Belgian federal government’s practices regarding the institutionalisation, quality and impact of policy evaluations. The paper takes a holistic approach, which not only looks at individual practices, but also at how those can come together so that evaluation becomes an integral part of the policy cycle. Public policy evaluation promotes evidence-informed policymaking and ensures that policies improve outcomes by bringing an understanding of what works, why, for whom, and under what circumstances. Evaluation is also a core tool of sound public financial management, as it helps governments spend better and promotes accountability and transparency in spending. The paper proposes concrete policy recommendations for improving the Belgian federal government’s evaluation system.