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Private foundations don’t post open calls, so nobody can search them. We read IRS filings instead — 9.6 million grants from 174,053 foundations and grantmaking charities, searchable by what the money was actually for.

12 funders with a record of paying for “polio”

Where the money went

1.0×
Gates Foundation → Path: $115M across 9 grants, latest 2024The Bloomberg Family Foundation Inc → Gates Philanthropy Partners: $20M across 2 grants, latest 2024Dalio Family Fund Inc → Gates Philanthropy Partners: $10M across 1 grant, latest 2023The Leona M and Harry B Helmsley → Gates Philanthropy Partners: $2.0M across 2 grants, latest 2024The Cleveland Foundation → Rotary Foundation of Rotary International: $188K across 3 grants, latest 2024Rotary International 7570 District → The Rotary Foundation-Polio Plus: $142K across 3 grants, latest 2023Quad Cities Community Foundation → Rotary Foundation of Rotary International: $125K across 3 grants, latest 2024The Rotary Club of Downers Grove → Rotary Foundation of Rotary International: $86K across 4 grants, latest 2024Rotary Club of Des Moines Foundation → Rotary International: $69K across 4 grants, latest 2024Buckhead Rotary Foundation Inc → Rotary International Foundation: $40K across 3 grants, latest 2024Slicker Enterprise Foundation → The Rotary Foundation of Rotary International: $35K across 3 grants, latest 2024The Charles H & Annetta R Masland → The Rotary Foundation: $24K across 4 grants, latest 2025Gates Foundation → Biological E Limited: $27M across 1 grant, latest 2023The Bloomberg Family Foundation Inc → National Philanthropic Trust: $10M across 1 grant, latest 2022Dalio Family Fund Inc → National Philanthropic Tr: $5.0M across 1 grant, latest 2022Gates Foundation → Results Educational Fund Inc: $23M across 3 grants, latest 2024Gates Foundation → United Nations Foundation Inc: $19M across 4 grants, latest 2024Gates Foundation → United States Fund for Unicef: $18M across 5 grants, latest 2024Gates Foundation → Japan International Cooperation Agency: $13M across 6 grants, latest 2024Gates Foundation → Grid3 Inc: $12M across 2 grants, latest 2024Gates Foundation → Clinton Health Access Initiative Inc: $12M across 3 grants, latest 2024Gates Foundation → Solina Centre for International Development and Research (Scidar) Ltdgte: $7.8M across 1 grant, latest 2023Gates Foundation → United Nations Capital Development Fund: $6.5M across 2 grants, latest 2024Gates Foundation → Global Poverty Project Inc: $6.3M across 3 grants, latest 2024Gates Foundation → University of Washington Foundation: $5.5M across 3 grants, latest 2024Gates Foundation → International Medical Corps: $4.7M across 2 grants, latest 2024Gates Foundation → Global Institute for Disease Elimination (Glide) Limited: $4.1M across 3 grants, latest 2024Gates Foundation → Task Force for Global Health Inc the: $3.7M across 2 grants, latest 2024Gates Foundation → Pt Bio Farma (Persero): $3.5M across 1 grant, latest 2024Gates Foundation → Center for Advancing Public Health: $2.8M across 2 grants, latest 2023Gates Foundation → Bluesquare Sa: $2.6M across 2 grants, latest 2023Gates Foundation → Batavia Biosciences Bv: $2.6M across 1 grant, latest 2022Gates Foundation → Massachusetts Institute of Technology: $2.1M across 2 grants, latest 2023Gates Foundation → World Health Organization: $2.0M across 2 grants, latest 2023Gates Foundation → Jsi Research & Training Institute Inc: $1.7M across 1 grant, latest 2024Gates Foundation → Rector and Visitors of the University of Virginia the: $1.6M across 1 grant, latest 2024Gates Foundation → Sohail Inc: $1.5M across 1 grant, latest 2023Gates Foundation → Provincial Health Division Haut Lomami Province: $1.4M across 3 grants, latest 2024Gates Foundation → Provincial Health Division Tanganyika Province: $1.4M across 3 grants, latest 2024Gates Foundation → Nigeria Governors' Forum: $1.2M across 2 grants, latest 2024Gates Foundation → Storyville Center for the Spoken Word Inc: $1.2M across 1 grant, latest 2023Gates Foundation → Institut National De Recherche Biomedicale (Inrb): $1.2M across 1 grant, latest 2024Gates Foundation → 60 Decibels Inc: $1.1M across 2 grants, latest 2024Gates Foundation → Makerere University: $1000K across 1 grant, latest 2022Gates Foundation → Lualaba Provincial Health Division: $781K across 2 grants, latest 2024Gates Foundation → Aga Khan University: $700K across 1 grant, latest 2024Gates Foundation → Stichting Joep Lange Institute for Global Health and Development: $700K across 1 grant, latest 2024Gates Foundation → Rotary Action Group for Family Health and Aids Prevention Inc: $492K across 2 grants, latest 2024Gates Foundation → Universiteit Stellenbosch: $399K across 1 grant, latest 2024Gates Foundation → Board of Regents of the University of Nebraska: $396K across 1 grant, latest 2022Gates Foundation → Kwame Nkrumah University of Science and Technology: $342K across 1 grant, latest 2023Gates Foundation → International Federation of Red Cross and Red Crescent Societies: $300K across 1 grant, latest 2023Gates Foundation → Imperial College of Science Technology and Medicine: $255K across 1 grant, latest 2022Gates Foundation → University of Cape Town: $168K across 1 grant, latest 2023Gates Foundation → William Davidson Institute at the University of Michigan the: $140K across 1 grant, latest 2022Gates Foundation: $310M on this topic. Open the funder.Gates Foundation$310MThe Bloomberg Family Foundation Inc: $30M on this topic. Open the funder.The Bloomberg Family Foundati…$30MDalio Family Fund Inc: $15M on this topic. Open the funder.Dalio Family Fund Inc$15MThe Leona M and Harry B Helmsley: $2.0M on this topic. Open the funder.The Leona M and Harry B Helms…$2.0MThe Cleveland Foundation: $188K on this topic. Open the funder.The Cleveland Foundation$188KRotary International 7570 District: $142K on this topic. Open the funder.Rotary International 7570 Dis…$142KQuad Cities Community Foundation: $125K on this topic. Open the funder.Quad Cities Community Foundat…$125KThe Rotary Club of Downers Grove: $86K on this topic. Open the funder.The Rotary Club of Downers Gr…$86KRotary Club of Des Moines Foundation: $69K on this topic. Open the funder.Rotary Club of Des Moines Fou…$69KBuckhead Rotary Foundation Inc: $40K on this topic. Open the funder.Buckhead Rotary Foundation Inc$40KSlicker Enterprise Foundation: $35K on this topic. Open the funder.Slicker Enterprise Foundation$35KThe Charles H & Annetta R Masland: $24K on this topic. Open the funder.The Charles H & Annetta R Mas…$24KPath: received $115M on this topicPath$115MGates Philanthropy Partners: received $32M on this topicGates Philanthropy Partners$32MBiological E Limited: received $27M on this topicBiological E Limited$27MResults Educational Fund Inc: received $23M on this topicResults Educational Fund Inc$23MUnited Nations Foundation Inc: received $19M on this topicUnited Nations Foundation Inc$19MUnited States Fund for Unicef: received $18M on this topicUnited States Fund for Unicef$18MJapan International Cooperation Agency: received $13M on this topicJapan International Cooperation…$13MGrid3 Inc: received $12M on this topicGrid3 Inc$12MClinton Health Access Initiative Inc: received $12M on this topicClinton Health Access Initiativ…$12MNational Philanthropic Trust: received $10M on this topicNational Philanthropic Trust$10MSolina Centre for International Development and Research (Scidar) Ltdgte: received $7.8M on this topicSolina Centre for International…$7.8MUnited Nations Capital Development Fund: received $6.5M on this topicUnited Nations Capital Developm…$6.5MGlobal Poverty Project Inc: received $6.3M on this topicGlobal Poverty Project Inc$6.3MUniversity of Washington Foundation: received $5.5M on this topicUniversity of Washington Founda…$5.5MNational Philanthropic Tr: received $5.0M on this topicNational Philanthropic Tr$5.0MInternational Medical Corps: received $4.7M on this topicInternational Medical Corps$4.7MGlobal Institute for Disease Elimination (Glide) Limited: received $4.1M on this topicGlobal Institute for Disease El…$4.1MTask Force for Global Health Inc the: received $3.7M on this topicTask Force for Global Health In…$3.7MPt Bio Farma (Persero): received $3.5M on this topicPt Bio Farma (Persero)$3.5MCenter for Advancing Public Health: received $2.8M on this topicCenter for Advancing Public Hea…$2.8MBluesquare Sa: received $2.6M on this topicBluesquare Sa$2.6MBatavia Biosciences Bv: received $2.6M on this topicBatavia Biosciences Bv$2.6MMassachusetts Institute of Technology: received $2.1M on this topicMassachusetts Institute of Tech…$2.1MWorld Health Organization: received $2.0M on this topicWorld Health Organization$2.0MJsi Research & Training Institute Inc: received $1.7M on this topicJsi Research & Training Institu…$1.7MRector and Visitors of the University of Virginia the: received $1.6M on this topicRector and Visitors of the Univ…$1.6MSohail Inc: received $1.5M on this topicSohail Inc$1.5MProvincial Health Division Haut Lomami Province: received $1.4M on this topicProvincial Health Division Haut…$1.4MProvincial Health Division Tanganyika Province: received $1.4M on this topicProvincial Health Division Tang…$1.4MNigeria Governors' Forum: received $1.2M on this topicNigeria Governors' Forum$1.2MStoryville Center for the Spoken Word Inc: received $1.2M on this topicStoryville Center for the Spoke…$1.2MInstitut National De Recherche Biomedicale (Inrb): received $1.2M on this topicInstitut National De Recherche…$1.2M60 Decibels Inc: received $1.1M on this topic60 Decibels Inc$1.1MMakerere University: received $1000K on this topicMakerere University$1000KLualaba Provincial Health Division: received $781K on this topicLualaba Provincial Health Divis…$781KAga Khan University: received $700K on this topicAga Khan University$700KStichting Joep Lange Institute for Global Health and Development: received $700K on this topicStichting Joep Lange Institute…$700KRotary Action Group for Family Health and Aids Prevention Inc: received $492K on this topicRotary Action Group for Family…$492KUniversiteit Stellenbosch: received $399K on this topicUniversiteit Stellenbosch$399KRotary Foundation of Rotary International: received $398K on this topicRotary Foundation of Rotary Int…$398KBoard of Regents of the University of Nebraska: received $396K on this topicBoard of Regents of the Univers…$396KKwame Nkrumah University of Science and Technology: received $342K on this topicKwame Nkrumah University of Sci…$342KInternational Federation of Red Cross and Red Crescent Societies: received $300K on this topicInternational Federation of Red…$300KImperial College of Science Technology and Medicine: received $255K on this topicImperial College of Science Tec…$255KUniversity of Cape Town: received $168K on this topicUniversity of Cape Town$168KThe Rotary Foundation-Polio Plus: received $142K on this topicThe Rotary Foundation-Polio Plus$142KWilliam Davidson Institute at the University of Michigan the: received $140K on this topicWilliam Davidson Institute at t…$140KRotary International: received $69K on this topicRotary International$69KRotary International Foundation: received $40K on this topicRotary International Foundation$40KThe Rotary Foundation of Rotary International: received $35K on this topicThe Rotary Foundation of Rotary…$35KThe Rotary Foundation: received $24K on this topicThe Rotary Foundation$24K
12 funders, 51 recipients, grants matching “polio” only. Ribbon width is proportional to the total given; each funder has its own colour (smaller funders in gray). Hover a name to isolate its flows, click a funder to open it. Drag to move around; zoom with the buttons, a double-click, or the wheel after clicking the map.

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Source: IRS Form 990-PF Part XV and Form 990 Schedule I, tax years 2019–2025. These are grants already paid, a record of what an organization funds rather than an open call. Private foundations rarely accept unsolicited applications and the route in is usually a program officer; grantmaking charities and associations more often run real application cycles, so check their website. How this data is built, and its limits →