Designing and implementing effective integrity and transparency policies requires robust institutional underpinnings. Yet, the importance of this dimension is often underestimated. This report provides a comprehensive analysis of the integrity system in Peru, including the progress made so far and the challenges that remain. It provides concrete recommendations for the establishment of a National Integrity and Transparency System, including defining the legal nature of the system, creating a National Integrity and Transparency Authority as the governing body, and reforming the High-Level Anti-Corruption Commission to improve inter-institutional co-ordination within the new system and relations with non-state actors. Finally, the report addresses how to ensure better implementation throughout the Peruvian public sector, including a review of the Integrity Model to ensure its effective application throughout the national territory.