The Center for Global Development’s policy paper, “Conditioned Domestic ‘Co-financing’ Policies in Global Health: A Landscape Analysis,” provides an in-depth examination of co-financing policies in global health. These policies, which refer to the domestic financing of health initiatives influenced by conditions set by global funding agencies and recipient governments, are seen as a pathway to sustainability and country ownership. The paper surveys the various definitions and accountability mechanisms used by agencies and then, through quantitative analysis, evaluates the impact of co-financing by examining data from Gavi and the Global Fund. Notably, it reveals differences in agency policies and the practical implementation of these co-financing requirements, raising important questions about budget space and sustainability planning for health in recipient countries.