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Data / Nonprofits / Hawaii / Honolulu / Mutual and membership benefit

Mutual and membership benefit nonprofits in Honolulu, HI: 33 registered with the IRS

33 mutual and membership benefit nonprofits are registered with the IRS in Honolulu, HI, 5 of them 501(c)(3) charities; the 19 that report revenue took in $217.6 million. The largest by revenue: Sutter Insurance Services Corporation ($119.8 million), Ilwu Local 142 Health & Welfare Trust ($57 million), Sand Island Business Association ($13.2 million).

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Every organization, largest by revenue first

OrganizationTypeSinceRevenueAssetsFiling
Sutter Insurance Services Corporation501(c)(3)1993$119.8 million$449.2 million2024-12
Ilwu Local 142 Health & Welfare Trust501(c)(9)2009$57 million$71.9 million2024-12
Sand Island Business Association501(c)(4)2018$13.2 million$24.8 million2025-06
Ilwu Local 142 General Health & Welfare Trust501(c)(9)2010$8.6 million$15.5 million2024-12
Southern Oregon Insurance Inc501(c)(3)2006$6.3 million$50.2 million2025-09
Jas W Glover LTD Employees Welfare Benefit Plan501(c)(9)2026$3.7 million$2.5 million2025-12
Hawaii Tapers Vacation Trust Fund501(c)(9)2014$2.6 million$1.6 million2024-12
Hawaii Tapers Retiree Health Reimbursement Fund Trust501(c)(9)2015$2.2 million$10.5 million2024-12
Painting Industry of Hawaii Reserve Benefit Fund501(c)(9)2003$1.2 million$11.3 million2025-06
Hawaii Residency Program Inc Trust for Professional Liability501(c)(3)1987$896,915$6 million2025-06
Honolulu Police Relief Association Inc501(c)(9)2008$565,337$6 million2025-12
CL&St Local Union 1926 Retiree Health Reimbursement Fund501(c)(9)2022$557,486$1.5 million2024-12
Ilwu Local 142 Veba Trust501(c)(9)2009$268,447$6.5 million2024-12
Waialua Water Association501(c)(12)2024$231,914$191,0642025-12
Ibew Local 1260 Insurance Trust501(c)(9)2018$149,355$1.1 million2025-09
Kalihi Kai JLS501(c)(3)2009$112,243$1.8 million2024-12
Hawaii Medical Service Association Retiree Health Benefits Trust501(c)(9)2006$75,783$60.8 million2024-12
Young Brothers Limited Veba for Bargaining Unit Employees501(c)(9)2000$62,617$20.1 million2024-12
Honolulu Fire Department Welfarefund501(c)(9)2006$61,460$789,8642024-12
Consulting Engineers Council of Hawaii Administrative Support Grou501(c)(3)2023$0$02026-02
Daniel Chappie James Jr Lodge No 4501(c)(10)2014$0$02025-12
Hawaii Island Rental Property Alliance501(c)(6)2025$0$02025-12
Hawaii Longshore Health and Welfare Trust Fund501(c)(9)2026
Hook Chu Cemetery Association501(c)(13)2022$0$44,2832025-12
Iatse Local 665 Training Trust Fund501(c)(9)2009$0$02025-12
Ibew Local 1357 Insurance Trust501(c)(9)2014$0$02025-09
Icf Hawaii Chapter501(c)(6)2024$0$02025-12
Knights Templar of the United States of America501(c)(10)1964$0$02025-06
Knights of Columbus501(c)(8)1940$0$02024-12
Knights of Columbus501(c)(8)1940$0$02024-12
Mayoral Transition Committee501(c)(4)2014$0$02025-12
Mechanical Contractors Workers Compensation Self Ins Group501(c)(15)2003
Trustees Hawaii Electrical Utility Workers Vacation and Holiday Fund501(c)(9)2024$0$02024-12

Other causes in Honolulu, HI

Every nonprofit in Honolulu, HI · Mutual and membership benefit nonprofits across the state · Nonprofits in every city of the state

Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.