Global health financing is facing its most significant constraints in two decades. The Organisation for Economic Cooperation and Development (OECD) projects a decline in official development assistance of 9 to 17 percent in 2025. International health funding could see a drop of up to 60 percent from its 2022 peak. These financial cuts pose a serious risk. They could push an additional 39 million people into poverty. Simultaneously, there is a threat of reversing the progress made against diseases such as HIV, tuberculosis, and malaria. Achievements in preventing vaccine-preventable diseases are also at risk.