Global health financing has become increasingly central to understanding both routine health system performance and emergency response capacity, particularly during the COVID-19 pandemic. This review by the Global Burden of Disease 2020 Health Financing Collaborator Network examined total health spending across 204 countries and territories, including domestic government expenditure, out-of-pocket spending, private contributions, and development assistance for health (DAH). The study also quantified COVID-19-related disbursements in 2020 and projected future spending trends up to 2050, providing a comprehensive picture of global health financing dynamics.

In 2019, global health expenditure reached approximately US$8.8 trillion, corresponding to about $1,132 per person. However, spending was highly unequal across income groups and regions, with DAH representing a small but critical share of total financing in low-income countries, where it accounted for nearly one-quarter of all health spending. In 2020, total DAH increased to an estimated $54.8 billion, of which $13.7 billion was directed toward the COVID-19 response. Most of this funding supported emergency activities such as supply chains, logistics, and coordination, while a relatively small proportion reached regions with the highest disease burden, including Latin America, which received only 7.7% of COVID-19-related DAH despite experiencing a large share of deaths.

These findings highlight both the responsiveness and limitations of global health financing systems during a public health crisis. While development assistance increased substantially in response to COVID-19, allocation inefficiencies and persistent inequities remained evident. The study further projects continued growth in global health spending through 2050, but with sustained disparities between countries. Overall, the results emphasize the need for more equitable, transparent, and strategically directed health financing to ensure that resources align more closely with global disease burden and preparedness needs.