Summary This article documents the experience of Catholic Relief Services through its Community?Based Primary Health Care Program (CBPHCP) in Battambang, Cambodia, in the development of structures and systems of community and health centre co?management/co?financing. The article discusses the role of community health structures in the development of these systems and the relationship between health centre quality of service and community financing. Finally, future plans for expansion, challenges, and lessons learned from this process are presented.