Developing countries, donor agencies, and private philanthropies devote about $500 billion a year to improve the health of people in the developing world. But the lack of timely, accurate information about how this money is spent is undermining its impact. This problem can be solved. A working group organized by CGD's Global Health Policy Research Network offers four specific recommendations. Among the findings: place the highest priority on responding to the needs of in-country decision makers and make full use of modern information management technology.