The GiveWell Blog

All GiveWell’s grantmaking Posts

Help Us Respond to an Uncertain Future for Global Health

(updated on: ) | by GiveWell Staff

It has been a tumultuous year for global health. In early 2025, the US government cut billions of dollars in foreign aid, affecting millions of people around the world and creating substantial uncertainty that continues to ripple through health and development programs around the world.

Drawing on almost two decades of cost-effectiveness research and analysis, GiveWell assessed the effects in real time and identified funding gaps where donors’ contributions could have exceptional impact. Our actions were guided by our core principles:

  • Search for highly cost-effective giving opportunities, even in uncertain circumstances.
  • Rigorously evaluate those opportunities and share our research publicly, while acknowledging that timely action sometimes requires accepting higher uncertainty.
  • Direct funds to where we think they’ll do the most good, considering both immediate needs and long-term implications.

Our response so far

Donut chart with categories corresponding to the percentage of response funding for each program area
In response to funding shortfalls, we funded time-sensitive opportunities to ensure that cost-effective programs could continue. And in response to substantial uncertainty and in expectation of growing needs, we engaged in efforts to research new areas and prepare ourselves for the future. You can read some examples of our response later in this post.

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Safe Water Projects: Saving Lives and Improving Our Grantmaking

(updated on: ) | by GiveWell Staff

Clean water. Most of us take it for granted. We can turn on the tap and have safe water to drink whenever we want, without having to give it a second thought. That’s not the case for more than a billion people around the world who lack access to uncontaminated drinking water. This is a significant health concern: According to the World Health Organization, more than 500,000 people die each year from diseases caused by contaminated water.

We’ve been thinking hard about how best to build on our past grantmaking to address the huge need for clean water. In January, we launched a public request for information (RFI) to identify organizations who would be interested in implementing chlorination programs in countries with a high burden of waterborne disease.

RFIs are a relatively new strategy for GiveWell aimed at identifying highly cost-effective grantmaking opportunities. The call for water chlorination programs was just the second RFI we issued. The first, completed in 2024, was for research grants, and we’ve since completed another, for programs aimed at increasing vaccination rates. We’ve been excited about the overwhelming interest our RFIs have received. By the March 7 application deadline for water chlorination programs, we had received more than 200 applications. From that group, we recently funded a portfolio of grants totaling around $16 million to support pilots of in-line chlorination programs in six African countries.

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Podcast Episode 9: Advancing GiveWell’s Work on Family Planning

(updated on: ) | by GiveWell Staff

As GiveWell’s research team grows, our goal is to compare as wide a range of programs as we can to find the most cost-effective opportunities to help people. Over the past year and a half, we’ve been investigating family planning services that help people decide whether and when to have children as a new area of research.

Family planning programs have particularly complex challenges around targeting, logistics, and ensuring informed and voluntary choice. However, GiveWell’s increasing research capacity positions us to now take on new and complex investigations like this. Over the past year, we’ve been  reviewing evidence, consulting with experts, modeling the benefits of contraception, and conducting initial grant investigations, focusing on programs that aim to increase access to and use of modern contraception. This work is especially timely as anticipated cuts to foreign assistance could reduce existing family planning support by around 50%, creating significant new funding gaps.

In this episode, GiveWell CEO and co-founder Elie Hassenfeld speaks with researcher Dilhan Perera about the complexity of evaluating family planning programs. They explore the types of programs GiveWell is considering, the unique challenges this area presents, and key questions we’re working to answer.

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Podcast Episode 7: Deepening GiveWell’s Focus on Livelihoods Programs

(updated on: ) | by GiveWell Staff

GiveWell has long grappled with fundamental questions about how to value different positive impacts and make funding decisions across diverse programs. In particular, how much more valuable it is to save a life than to substantially improve it? And how can we prioritize between programs that achieve those outcomes in different measures when there’s no “right” answer to that question?

In this episode, GiveWell CEO and co-founder Elie Hassenfeld speaks with Senior Program Officer Julie Faller about why GiveWell is dedicating more capacity to researching livelihoods programs that aim to increase people’s incomes. They discuss how we’re building on existing work, searching for new cost-effective opportunities, and exploring more of the impactful programs we’ve long cared about.

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What We’ve Learned from Our First Lookbacks

(updated on: ) | by Alex Cohen
We first published this page on July 9. On July 21, we discovered an error in our impact estimates in the New Incentives lookback. That prompted us to review both our New Incentives and Helen Keller lookbacks. This page reflects corrections to our initial analysis as a result of that review.

At GiveWell, we’re committed to understanding the impact of our grantmaking and improving our decisions over time. That’s why we’ve begun conducting “lookbacks”—reviews of past grants, typically two to three years after making them, that assess how well they’ve met our initial expectations and what we can learn from them.

We conduct lookbacks for two main reasons: accountability and learning. By examining both the successes and challenges of past grants and publishing those findings on our website, we aim to be transparent about the impact of donor funding. Systematically reviewing past grants also helps us identify ways to improve our decision-making. When lookbacks identify challenges, lower-than-expected impact, or key questions that we think we should have an answer to, we use these findings to adjust our approach to similar grants in the future or prioritize follow-up research. When lookbacks show higher-than-expected impact, that’s valuable, too—in those cases, we made the error of underestimating impact and might be granting too little to certain programs.

Bar chart showing change in expected deaths averted by grants

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Podcast Episode 4: Supporting Governments Navigating US Funding Cuts

(updated on: ) | by GiveWell Staff

Cuts to US government foreign assistance have created unprecedented challenges for global health programs. Countries that have relied on this funding must now navigate substantial gaps and make difficult decisions about program priorities.

In the fourth episode of GiveWell’s podcast series on these cuts, GiveWell CEO and co-founder Elie Hassenfeld speaks with Program Officer Dan Brown about grants to create technical support units (TSUs) in six African countries. These TSUs will provide support to the ministries of health in Burkina Faso, Democratic Republic of the Congo, Malawi, Nigeria, Uganda, and Zambia as they navigate funding transitions to maintain essential health services. The work is being led by the respective governments, and the support will be tailored to their individual priorities, as well as the work they have already done.

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