# Mass General Brigham Incorporated

Somerville, Massachusetts. EIN 47-1683619.
Exempt, no recent return on file.

Source: IRS public records as of October 13, 2026, as shown by the Alleviate Index. https://index.alleviate.org/org/mass-general-brigham-incorporated-471683619

## At a glance

The IRS file shows no return for this organization.

- Revenue: Not on file (No return on the IRS file)
- Assets: Not on file (No return on the IRS file)
- Required return: Form 990-N (The e-Postcard, for receipts normally $50,000 or less)
- Fiscal year: October to September (Ends in September)
- Focus: Community health systems (NTEE E21, health care)
- Charity type: Publicly supported (170(b)(1)(A)(vi))

## What is due, and when

Computed from the fiscal year end and the return type. Federal dates are fixed by law. The state line is the general charitable solicitation rule of Massachusetts, read from the regulator’s own guidance; exemptions vary, and the regulator’s page is the authority. No return is on the IRS file and the ruling is not recent, so only upcoming dates are listed.

- Feb 16, 2027: Form 990-N for FY2026. Fifteenth day of the fifth month after year end. February 15 is a legal holiday (Washington's Birthday), so the deadline moves to the next business day.
- Feb 15, 2028: Form 990-N for FY2027. Fifteenth day of the fifth month after year end.
- Annual: Massachusetts charitable solicitation registration. Charities that solicit in Massachusetts register with the state and file a report each year, unless exempt. It is due by the 15th day of the fifth month after the fiscal year ends. An extension is available. For a fiscal year ending in September, that is February 15. Regulator: Non-Profit Organizations/Public Charities Division, Massachusetts Office of the Attorney General (https://www.mass.gov/orgs/the-attorney-generals-non-profit-organizationspublic-charities-division).

## What the IRS lists say

Three IRS lists, read each month. This is a display of what they show, not a determination of status.

- Exempt status: Listed as exempt. The IRS list of exempt organizations. As of October 13, 2026.
- Deductible donations: Not listed. The organization is covered by a group exemption. Such organizations are not listed one by one. As of October 13, 2026.
- Automatic revocation: On the list. Revoked February 15, 2019. Posted August 12, 2019. The list shows no reinstatement, and the IRS list of exempt organizations still shows the organization. Both are shown as the IRS publishes them.

## No size comparison

No return with figures is on the IRS file, so there is nothing to compare.

## What public data cannot tell you

A 990 shows money in and money out. It cannot show whether programs, outcomes, funding and compliance live in one place, or how long a funder report takes to produce. The five pillars below are scored only by the organization itself.

- Mission & Strategic Clarity: Unscored
- Stakeholders & Positioning: Unscored
- Programs & Program Design: Unscored
- Evidence, Data & Storytelling: Unscored
- Systems, Governance & Readiness: Unscored

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