How many mutual benefit nonprofits operate in Massachusetts?

Every IRS-registered mutual benefit nonprofit in Massachusetts appears in the Givalgo Discover index. The top 50 by reported revenue are listed on this page; the full set is searchable on discover.givalgo.ai.

What's the largest mutual benefit nonprofit in Massachusetts?

The single largest mutual benefit nonprofit in Massachusetts by reported total revenue is shown at the top of the list on this page, sourced from each organisation's most recent IRS Form 990 filing.

How do I vet a mutual benefit nonprofit in Massachusetts before donating?

Use Givalgo Discover's free profile for the organisation: it cross-references the IRS Auto-Revocation List, IRS Publication 78, and the IRS Business Master File, and exposes the latest Form 990 financials and governance signals on a single page.

Are donations to Massachusetts mutual benefit nonprofits tax-deductible?

Federal deductibility is determined by IRS Publication 78 status, not state location. Donations to a Pub 78-listed mutual benefit nonprofit in Massachusetts are tax-deductible at the federal level; Massachusetts state tax treatment may differ.

Where do mutual benefit nonprofits in Massachusetts file their Form 990?

All US tax-exempt organisations file Form 990 with the IRS at the federal level — there is no state-specific filing for the federal exemption itself. Massachusetts state charity registration is a separate state-level requirement.

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Massachusetts · NTEE Y

Mutual Benefit Nonprofits in Massachusetts

Givalgo Discover indexes 50 active mutual benefit nonprofits headquartered in Massachusetts. The list below is sorted by reported revenue on the most recent Form 990 indexed for each organisation.

Top 50 by reported revenue

From the most recent Form 990 indexed for each organisation. Click an org for full diligence detail.

#	Organisation	Revenue
1	TUFTS HEALTH PUBLIC PLANS INC EIN 80-0721489	$2.6B
2	NORTHROP GRUMMAN VEBA MASTER TRUST I EIN 95-3386394	$1.3B
3	GPU COMPANIES HEALTH CARE PLAN FOR NONBARGAINING RETIREES EIN 22-3323698	$133.3M
4	MASSACHUSETTS LIFE AND HEALTH INSURANCE GUARANTY ASSOCIATION EIN 22-2994116	$120.7M
5	JOHN HANCOCK MUTUAL LIFE INSURANCE COMPANY EMPL WELFARE TRUST EIN 04-3105469	$95.4M
6	MASSACHUSETTS INSTITUTE OF TECHNOLOGY WELFARE BENEFIT PLANS T EIN 04-3177556	$55.4M
7	TRANSIT EMPLOYEES HEALTH AND WELFARE FUND EIN 82-3692932	$23.2M
8	WAYNE J GRIFFIN ELECTRIC INC WELFARE BENEFIT PLAN TRUST EIN 84-6474734	$20.4M
9	UNITARIAN UNIVERSALIST ASSOCIATIONEMPLOYEE BENEFITS TRUST EIN 20-8079417	$18.0M
10	PINNACLE WEST CAPITAL CORPORATION UNION HEALTH BENEFITS MASTER TRUST EIN 86-0748214	$17.0M
11	JOHNSON CONTROLS EMPLOYMENT TRANSITION BENEFITS PLAN EIN 65-0953989	$16.3M
12	MASTER TRUST AGREEMENT FOR WELFARE BENEFITS EIN 04-3480219	$13.3M
13	UGSOA HEALTH AND WELFARE TRUST FUND EIN 82-4038622	$11.8M
14	PINNACLE WEST CAPITAL CORPORATION NON-UNION HEALTH BENEFITS TRUST EIN 81-6134353	$11.4M
15	OPHTHALMIC CONSULTANTS OF BOSTON INC HEALTH WELFARE & BENEFITS PLAN EIN 61-1433916	$10.5M
16	NP DR PHILLIPS LLC EIN 87-1032503	$10.0M
17	WORKERS COMPENSATION RESEARCH INSTITUTE EIN 36-3264285	$8.1M
18	GPU COMPANIES BASIC LIFE INS PLAN FOR NON-BARGAINING RETIREES EIN 23-3062202	$7.9M
19	JOHN HANCOCK MUTUAL LIFE INS CO MARKETING REP WELFARE TRUST EIN 04-3228901	$7.4M
20	NP CROSBY LLC EIN 86-3384698	$6.7M
21	NP 18TH & CHET LLC EIN 87-2048514	$6.1M
22	NP ATLANTA INFILL INDUSTRIAL LLC EIN 82-2207008	$5.9M
23	PINNACLE WEST CAPITAL CORPORATION LIFE INSURANCE BENEFITS TRUST EIN 81-6137331	$5.9M
24	NP ABBEY LLC EIN 87-3581094	$5.9M
25	NP OAK LAWN COMMONS LLC EIN 88-1946681	$5.4M
26	NP SIX FORKS LLC EIN 47-4101610	$5.2M
27	BOSTON PLASTERERS & CEMENT MASONS & ASPHALT LAYERS LOC 534 HLTH & WELF EIN 04-6049991	$4.9M
28	MASSACHUSETTS LABORERS LEGAL SERVICE FUND EIN 04-6357603	$3.8M
29	NAGE-SEIU LOCAL 5000 TRIAL COURT OF MASS HEALTH AND WELFARE FUND EIN 20-0575135	$2.8M
30	PROFESSIONAL FIRE FIGHTERS OF MASSACHUSETTS HEALTH AND WELFARE EIN 80-6067410	$2.7M
31	UAW UMASS HEALTH & WELFARE TR FUND EIN 04-3538613	$2.7M
32	NP BANGERTER CROSSING LLC EIN 83-4011046	$2.5M
33	PROPRIETORS OF THE RURAL CEMETERY IN WORCESTER EIN 04-1795920	$2.1M
34	ISO NEW ENGLAND RETIREE MEDICAL DENTAL AND LIFE TR EIN 13-7379593	$2.1M
35	GARDENS AT GETHSEMANE INC EIN 75-3031828	$1.9M
36	WOODLAWN-NORTH PURCHASE CEMETERIES ASSOC EIN 04-2863910	$1.5M
37	CHMC ANESTHESIA FOUNDATION INC RETIREE MEDICAL BENEFIT TRUST EIN 26-0538595	$1.4M
38	EXETER HEALTH RESOURCES INC SHORT TERM DISABILITY TR EIN 80-6089096	$1.4M
39	MCOFU RETIREE HEALTH AND WELFARE PLAN TR EIN 81-6348115	$1.4M
40	CARDIOVASCULAR SURGICAL FOUNDATION INC RETIREE MEDICAL SAVINGS ACCT EIN 41-3296301	$1.4M
41	THE AMERICAN CITY COALITION INC EIN 04-3243095	$1.3M
42	AL-MARHAMA EIN 46-4245990	$1.1M
43	NATIONAL CORRECTIONAL EMPLOYEES UNION TR FUND EIN 26-6426376	$1.1M
44	NEW ENGLAND POLICE BENEVOLENT ASSOCIATION HEALTH AND WELFARE EIN 26-2699984	$1.0M
45	IBEW LOCAL 7 SUPPLEMENTAL HEALTH & WELFARE FUND EIN 26-1227271	$1.0M
46	SOURCE INTERNATIONAL CORP EMPLOYEE BENEFITS TR EIN 04-3401853	$995K
47	CENTRAL CEMETERY ASSOCIATION OF RANDOLPH EIN 04-2207412	$992K
48	TUFTS MEDICAL CENTER-EMPLOYEE AFTER-TAX CONTRIBUTION TRUST EIN 26-3918574	$790K
49	BOSTON PLASTERERS AND CEMENT MASONS SUB FUND LOCAL UNION 534 EIN 61-1424309	$698K
50	RETIREES HEALTH INSURANCE TRUST FUND EIN 04-3560815	$686K

Frequently asked questions about mutual benefit nonprofits in Massachusetts

Answers compiled from the IRS Form 990, BMF, Pub 78, and Auto-Revocation List.

How many mutual benefit nonprofits operate in Massachusetts?: Every IRS-registered mutual benefit nonprofit in Massachusetts appears in the Givalgo Discover index. The top 50 by reported revenue are listed on this page; the full set is searchable on discover.givalgo.ai.
What's the largest mutual benefit nonprofit in Massachusetts?: The single largest mutual benefit nonprofit in Massachusetts by reported total revenue is shown at the top of the list on this page, sourced from each organisation's most recent IRS Form 990 filing.
How do I vet a mutual benefit nonprofit in Massachusetts before donating?: Use Givalgo Discover's free profile for the organisation: it cross-references the IRS Auto-Revocation List, IRS Publication 78, and the IRS Business Master File, and exposes the latest Form 990 financials and governance signals on a single page.
Are donations to Massachusetts mutual benefit nonprofits tax-deductible?: Federal deductibility is determined by IRS Publication 78 status, not state location. Donations to a Pub 78-listed mutual benefit nonprofit in Massachusetts are tax-deductible at the federal level; Massachusetts state tax treatment may differ.
Where do mutual benefit nonprofits in Massachusetts file their Form 990?: All US tax-exempt organisations file Form 990 with the IRS at the federal level — there is no state-specific filing for the federal exemption itself. Massachusetts state charity registration is a separate state-level requirement.