When Do Cash Transfers Improve Health and Save Lives

A wealth of evidence shows that large-scale, government-run cash transfer programs consistently improve food security and help people make investments to generate income. Beyond economic gains, direct cash payments to targeted recipients can be a lifeline, helping poor households to afford nutritious food and seek medical care when needed. However, while improvements in food security and income are well established, there are gaps in the evidence base about how and when cash transfers impact health.

This understanding is critical to design cost-effective strategies to reduce poverty and save lives. With recent reductions in global health expenditures, it is even more urgent to build a solid evidence base that supports planning and programming decisions.

When Cash Transfers Affect Health

A number of recent studies shed light on when cash transfers influence health outcomes. For instance:

• A study spanning 37 countries found greater improvements in health when cash transfer amounts were higher and occurred in areas with lower health expenditures, lower baseline life expectancy, and stronger healthcare regulations.
  
• An analysis of over 300 studies found that cash transfers had small effects on children's malnutrition, despite improvements in dietary diversity. Effects were larger when families received cash in addition to other services like behavior change communication related to nutrition.
  
• Evidence on service utilization (e.g., antenatal care and skilled birth attendance) has been mixed, while impacts on health-seeking behavior (e.g., seeking care when sick) were more consistently positive.
  

The Role of Implementation and Context

Cash transfers are not a silver bullet. Their effectiveness depends heavily on implementation, local systems, and conditions.

A systematic review of cash transfers and social determinants of health highlights the role of program design and context. Across 25 evaluations, factors such as transfer size, frequency, coverage, and economic conditions either enabled or constrained the impact of cash transfers. The implication is clear: Cash transfers are not a silver bullet. Their effectiveness depends heavily on implementation, local systems, and conditions.

Despite this finding, debate often centers on whether cash works, rather than when they work. To avoid sweeping generalizations, more nuanced evidence is needed.

How Timing and Conditions Affect Health Outcomes

Few studies of cash transfer programs have explicitly tested the conditions that amplify health impacts, but several patterns are emerging. For example, in Bangladesh, Nepal, and Niger, cash delivered quickly after a natural disaster improved food security and boosted economic outcomes far more than delayed support. Other evidence shows that stronger health systems (e.g., better facilities, trained staff) and access to nearby hospitals magnify health impacts.

Together, these findings underscore a critical insight: Context and implementation shape the impact of cash transfer programs. Yet most studies focus on single countries or overlook government-led programs, leaving important gaps for policymakers seeking to scale these programs.

Why We Need More Evidence

Progress in reducing poverty and improving health outcomes requires moving beyond isolated studies. We need systematic, comparative analyses that examine how impacts shift with changing contextual factors (e.g., droughts, inflation, or health system capacity) across multiple settings. We also need clear evidence of differences in impacts within and across the various countries where governments and other stakeholders implement cash transfer programs.

Understanding how implementation and context influence the health impacts of cash transfers is essential for maximizing returns on investment. With new large commitments in global health, the stakes are high. The evidence so far indicates that cash works differently depending on where and how it is delivered-but we still lack clarity on the mechanisms.

Rather than asking whether cash transfers work, the priority now is to determine when and how they work best. AIR will examine the conditions under which cash transfers improve health by pooling data from rigorous impact evaluations of government-supported cash transfer programs in sub-Saharan Africa. We will estimate average impacts and, crucially, how contextual and implementation factors systematically shape the effectiveness of these programs.