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Health impact funds often report: • number of patients reached • treatments delivered • facilities financed These are important. But do they answer a more fundamental question: “How much health are we actually creating per dollar invested?” In global health, this question isn’t new. Is the cost per DALY metric able to answer this question? For high-impact nonprofits, it does. It helps decision-makers assess: • Which interventions save the most lives • Which delivers the greatest improvement in health • How efficiently resources are being used However, despite operating in the same sectors, most impact investors don’t report cost per DALY. There are valid reasons: attribution is harder in market-based models, data is often incomplete, outcomes take time to materialise, and #LPs rarely require this level of analysis. There are downsides, though, to tracking outputs. For example, we risk missing differences in intervention effectiveness, trade-offs between scale and depth of #impact, and knowing whether capital is flowing to the highest-impact opportunities. Even if imperfect, introducing cost per DALY could anchor impact in real health outcomes, enable comparisons across interventions, improve capital allocation decisions, and  strengthen accountability to impact goals