The Hawaii State Capitol

Private foundations Hawaiitax years 2023 to 2025

Private foundations in Hawaii

653 private foundations based in Hawaii filed a 990-PF in the last two years. In their latest returns they gave $126.9 million in 5,532 grants, and 155 say they accept applications.

Foundations with a return in the last two years, each by its latest return (tax years 2023 to 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

Largest givers

By grants paid, latest return
  1. Hau'oli Mau Loa FoundationHonolulu, HI · tax year 2024 29 grants Preselected only $6,835,821 giving
  2. Harold KL Castle FoundationKailua, HI · tax year 2024 108 grants Accepts applications $6,685,968 giving
  3. McInerny FoundationHonolulu, HI · tax year 2024 107 grants Preselected only $5,730,840 giving
  4. Atherton Family FoundationHonolulu, HI · tax year 2024 Grants listed in an attachment (not in the e-file) Accepts applications $5,560,194 giving
  5. The Clarence TC Ching FoundationHonolulu, HI · tax year 2024 63 grants Accepts applications $5,387,700 giving
  6. Kosasa FoundationHonolulu, HI · tax year 2024 84 grants Accepts applications $5,190,270 giving
  7. Glacs Endowment FundHonolulu, HI · tax year 2024 3 grants Preselected only $4,321,506 giving
  8. Maurice and Joanna Sullivan Family FoundationHonolulu, HI · tax year 2025 27 grants Preselected only $3,920,000 giving
  9. The Victoria S and Bradley L Geist FoundationHonolulu, HI · tax year 2025 Grants listed in an attachment (not in the e-file) Accepts applications $3,226,691 giving
  10. Thomas J Vincent Foundation IncKaneohe, HI · tax year 2024 9 grants Preselected only $2,277,487 giving
  11. Hmsa FoundationHonolulu, HI · tax year 2024 19 grants Accepts applications $2,068,000 giving
  12. Gary O Galiher Foundation IncHonolulu, HI · tax year 2024 13 grants Preselected only $2,051,547 giving
  13. Frost Family FoundationHonolulu, HI · tax year 2024 17 grants Accepts applications $2,040,000 giving
  14. Lga Family FoundationHonolulu, HI · tax year 2025 21 grants Preselected only $2,021,000 giving
  15. Samuel N & Mary Castle FDNHonolulu, HI · tax year 2024 Grants listed in an attachment (not in the e-file) Accepts applications $1,936,030 giving
  16. First Hawaiian Bank FoundationHonolulu, HI · tax year 2024 69 grants Accepts applications $1,848,900 giving
  17. Hawaii Loa OhanaHonolulu, HI · tax year 2024 33 grants Preselected only $1,784,000 giving
  18. Abigail K K Kawananakoa FoundationHonolulu, HI · tax year 2024 25 grants Preselected only $1,670,496 giving
  19. The Strong FoundationHonolulu, HI · tax year 2024 16 grants Accepts applications $1,650,000 giving
  20. James & Abigail Campbell Family FoundationKapolei, HI · tax year 2024 26 grants Accepts applications $1,608,737 giving
  21. The Dods FoundationHonolulu, HI · tax year 2024 22 grants Preselected only $1,582,924 giving
  22. Mamoru & Aiko Takitani Foundation IncHonolulu, HI · tax year 2024 164 grants Preselected only $1,581,080 giving
  23. Tradewind Group FoundationHonolulu, HI · tax year 2025 146 grants Accepts applications $1,491,424 giving
  24. Cooke Foundation LimitedHonolulu, HI · tax year 2024 56 grants Accepts applications $1,401,350 giving
  25. Bank of Hawaii Charitable FDNHonolulu, HI · tax year 2024 40 grants Accepts applications $1,378,285 giving

Foundations that accept applications

Largest first

The return gives an application contact and does not check the preselected-only box.

  1. Harold KL Castle FoundationKailua, HI · tax year 2024 108 grants Accepts applications $6,685,968 giving
  2. Atherton Family FoundationHonolulu, HI · tax year 2024 Grants listed in an attachment (not in the e-file) Accepts applications $5,560,194 giving
  3. The Clarence TC Ching FoundationHonolulu, HI · tax year 2024 63 grants Accepts applications $5,387,700 giving
  4. Kosasa FoundationHonolulu, HI · tax year 2024 84 grants Accepts applications $5,190,270 giving
  5. The Victoria S and Bradley L Geist FoundationHonolulu, HI · tax year 2025 Grants listed in an attachment (not in the e-file) Accepts applications $3,226,691 giving
  6. Hmsa FoundationHonolulu, HI · tax year 2024 19 grants Accepts applications $2,068,000 giving
  7. Frost Family FoundationHonolulu, HI · tax year 2024 17 grants Accepts applications $2,040,000 giving
  8. Samuel N & Mary Castle FDNHonolulu, HI · tax year 2024 Grants listed in an attachment (not in the e-file) Accepts applications $1,936,030 giving
  9. First Hawaiian Bank FoundationHonolulu, HI · tax year 2024 69 grants Accepts applications $1,848,900 giving
  10. The Strong FoundationHonolulu, HI · tax year 2024 16 grants Accepts applications $1,650,000 giving
  11. James & Abigail Campbell Family FoundationKapolei, HI · tax year 2024 26 grants Accepts applications $1,608,737 giving
  12. Tradewind Group FoundationHonolulu, HI · tax year 2025 146 grants Accepts applications $1,491,424 giving
  13. Cooke Foundation LimitedHonolulu, HI · tax year 2024 56 grants Accepts applications $1,401,350 giving
  14. Bank of Hawaii Charitable FDNHonolulu, HI · tax year 2024 40 grants Accepts applications $1,378,285 giving
  15. Hawaii Realtors Charitable FoundationHonolulu, HI · tax year 2024 568 grants Accepts applications $1,326,493 giving
  16. Hawaiian Electric Industries Charitable FoundationHonolulu, HI · tax year 2024 Grants listed in an attachment (not in the e-file) Accepts applications $1,255,443 giving
  17. AMA Olukai FoundationHonolulu, HI · tax year 2025 17 grants Accepts applications $1,208,462 giving
  18. Charles and Mitch Ota FoundationHonolulu, HI · tax year 2025 31 grants Accepts applications $1,059,628 giving
  19. Central Pacific Bank FoundationHonolulu, HI · tax year 2025 41 grants Accepts applications $816,461 giving
  20. Hans and Clara Zimmerman FoundationHonolulu, HI · tax year 2025 85 grants Accepts applications $777,983 giving
  21. The Cades FoundationHonolulu, HI · tax year 2024 61 grants Accepts applications $710,920 giving
  22. J Watumull FundHonolulu, HI · tax year 2024 275 grants Accepts applications $683,500 giving
  23. The I Michael and Beth Kasser FoundatioKailuakona, HI · tax year 2025 5 grants Accepts applications $580,336 giving
  24. First Insurance Company of Hawaii Charitable FoundationHonolulu, HI · tax year 2025 88 grants Accepts applications $540,780 giving
  25. Loretta Luke Yajima Dream Big FoundationHonolulu, HI · tax year 2025 3 grants Accepts applications $512,000 giving

Giving by cause

Grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Education195 foundations $19,983,23231% of the total
  2. Arts and culture127 foundations $7,554,26512% of the total
  3. Philanthropy and grantmaking71 foundations $7,415,00311% of the total
  4. Health93 foundations $5,088,9988% of the total
  5. Human services94 foundations $4,802,3667% of the total
  6. Environment60 foundations $3,502,8555% of the total
  7. 19 other causes $16,698,23526% of the total

Most active small givers

Foundations with under $1 million in assets, by the number of grants they listed.

  1. Hawaii Realtors Charitable FoundationHonolulu, HI · tax year 2024 568 grants Accepts applications $1,326,493 giving
  2. Turtle Bay FoundationKahuku, HI · tax year 2024 54 grants Accepts applications $156,000 giving
  3. Hemic FoundationHonolulu, HI · tax year 2024 46 grants Preselected only $149,453 giving
  4. T FoundationHonolulu, HI · tax year 2024 45 grants Accepts applications $139,351 giving
  5. Y Hata & Co Limited - Hawaii Restaurant Association Endowment FundHonolulu, HI · tax year 2024 38 grants Preselected only $9,500 giving
  6. Aloha FoundationWaimanalo, HI · tax year 2025 35 grants Preselected only $82,500 giving
  7. Larry and Beatrice Ching FoundationHonolulu, HI · tax year 2024 34 grants Accepts applications $56,850 giving
  8. Research Institute for HawaiiusaHonolulu, HI · tax year 2024 28 grants Preselected only $36,331 giving
  9. Ehw Broadbent FoundationLihue, HI · tax year 2024 25 grants Preselected only $89,000 giving
  10. Stanley & Elaine Mukai FoundationHonolulu, HI · tax year 2024 23 grants Accepts applications $43,910 giving
  11. Peter G Drewliner FoundationHonolulu, HI · tax year 2024 22 grants Preselected only $42,600 giving
  12. HPM Building Supply FoundationKeaau, HI · tax year 2023 21 grants Preselected only $146,040 giving
  13. Macnaughton FoundationHonolulu, HI · tax year 2025 20 grants Preselected only $124,406 giving
  14. KSK FoundationHonolulu, HI · tax year 2024 20 grants Preselected only $123,017 giving
  15. Fontel FoundationHonolulu, HI · tax year 2024 19 grants Preselected only $59,000 giving

Cities

2 cities with 25 or more foundations
35 more cities with two or more