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The Hidden Geometry of Global Aid: How Money Moves Through 10 Million Transactions

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Network analysisSystems theoryForeign aid

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Researchers analyzed 10.9 million international aid transactions worth approximately $1 trillion flowing between 22,773 organizations to map the hidden network structure of global aid. The study reveals that centrality in the aid network is determined not by organization size but by downstream reach, with foundations and research organizations occupying more central positions than expected while large bilateral donors like USAID are less central relative to their partnerships. The network operates as a highly hierarchical, one-way system with long chains and few redundant pathways, resembling international banking but with less interconnectedness, making it vulnerable to disruption if major funders or intermediaries are removed.


The findings expose critical vulnerabilities in the global aid infrastructure, showing that the system lacks redundancy and could leave downstream organizations without funding if key intermediaries fail. This is particularly relevant given recent donor budget cuts and highlights the need to reconsider how aid architecture is designed to ensure resilience and reach.


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⚠️ Preprint – Noch nicht peer-reviewed

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Abstract: International aid is usually described as flows between countries, hiding the organisations money passes through. We reconstruct global aid’s organisational network from 10.9 million International Aid Transparency Initiative records, tracing over one million payments worth about US$1 trillion between 22,773 organisations. First, centrality, measured as how far a funder’s money can travel downstream, is not size. Relative to their number of partners, giant bilateral donors (USAID, UK FCDO) are only as central as expected, while the most central positions belong to foundations (Gates, Hewlett), research organisations (ODI, University of Oxford) and delivery contractors (Mott MacDonald). Second, principal component analysis of eleven flow measures separates organisations along three lines: whether they mainly give or receive, how much money flows in, and how reliant they are on few partners. Humanitarian organisations emerge from the flows alone, tending to handle larger inflows. Third, almost all organisations form one connected network, yet money moves down long, one-way chains. Among five comparison networks, aid most resembles international banking, with a few large hubs feeding many small players, but has far fewer loops and is more strictly top-down. This suggests a system with little redundancy, where losing a major funder or intermediary could cut off organisations downstream, a pressing question after recent donor cuts.

Source: The Hidden Geometry of Global Aid: How Money Moves Through 10 Million Transactions