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EIN04-2104334

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Isabella Stewart Gardner Museum Inc.

Updated October 30, 2026. Based on Internal Revenue Service records. Published by Humblebee.

Exempt under
501(c)(3)[1]
IRS ruling date
December 1937[2]
Publication 78 data
Listed (PC)[3]
Total revenue, period ending Jun 2025
$38,992,891[4]

Isabella Stewart Gardner Museum Inc. is listed by the IRS as exempt under section 501(c)(3) and is located in Boston, Massachusetts[5][1]. The IRS master file lists total revenue of $38,992,891 for the tax period ending June 2025[4].

IRS status

The IRS lists the organization as exempt under section 501(c)(3), classification: Charitable Organization[1]. Its foundation code is 15: Organization that receives a substantial part of its support from a governmental unit or the general public 170(b)(1)(A)(vi)[6]. It appears in IRS Publication 78 data with status code PC (A public charity, deductibility limitation 50% (60% for cash contributions))[3]. The IRS ruling date in the master file is December 1937[2].

Item IRS record
EIN[5] 04-2104334
Location in IRS records[5] Boston, Massachusetts
Exempt under[1] Section 501(c)(3)
IRS classification[1] Charitable Organization
Ruling date[2] December 1937
Foundation code[6] 15: Organization that receives a substantial part of its support from a governmental unit or the general public 170(b)(1)(A)(vi)
Deductibility code[7] 1: Contributions are deductible
Publication 78 data[3] Listed, status PC
NTEE code[8] A510: Arts, Culture and Humanities, Art Museums
Filing requirement[9] 990 (all other) or 990EZ return
Fiscal year ends[10] June
Latest e-filed return[11] Form 990, tax period ending June 2025

Finances as reported to the IRS

On its Form 990 for the tax period ending June 2023, the organization reported total revenue of $19,283,304[12]. That included contributions, gifts and grants of $10,871,153 and program service revenue of $5,174,911[13]. Total expenses on that Form 990 were $25,793,696 and net assets at year end were $294,981,464[12]. Total revenue on its Form 990 was $30,352,820 for the tax period ending June 2021[14], $21,324,640 for June 2022[15] and $19,283,304 for June 2023[12]. Separately, the IRS master file lists total revenue of $38,992,891 for the tax period ending June 2025[4].

IRS master file, newer period. For the most recent return in the IRS master file, for the tax period ending June 2025, the IRS lists total revenue of $38,992,891 and total assets of $382,282,469.[4]

June 2021: total revenue $30.4M$30.4MJune 2021: total expenses $21.7M$21.7MJun 2021June 2022: total revenue $21.3M$21.3MJune 2022: total expenses $23.9M$23.9MJun 2022June 2023: total revenue $19.3M$19.3MJune 2023: total expenses $25.8M$25.8MJun 2023
  • Total revenue
  • Total expenses
Amounts as reported on each return, rounded in the chart. Exact figures are in the table below[12].
Tax period ending Form Total revenue Total expenses Net assets at year end
June 2021[14]Form 990$30,352,820$21,672,068$325,738,270
June 2022[15]Form 990$21,324,640$23,924,424$280,532,291
June 2023[12]Form 990$19,283,304$25,793,696$294,981,464

Totals as reported on each return. The IRS publishes these extracts one to two years after filing.

Balance sheet, tax period ending June 2023

Line Amount
Total assets[16] $313,588,111
Total liabilities[16] $18,606,647
Net assets or fund balances[16] $294,981,464

Employees. Isabella Stewart Gardner Museum Inc. reported 277 employees on Form W-3 for calendar year ending with or within the tax period ending June 2023 (Form 990, Part V, line 2a).[17]

Compensation over $100,000. On the Form 990 for the tax period ending June 2023, Isabella Stewart Gardner Museum Inc. reported 16 individuals who received more than $100,000 of reportable compensation from the organization (Part VII, line 2).[18]

Questions people ask

What is the EIN of Isabella Stewart Gardner Museum Inc.?
The IRS Exempt Organizations Business Master File lists its employer identification number (EIN) as 04-2104334[5].
Is Isabella Stewart Gardner Museum Inc. a 501(c)(3)?
The IRS lists it as exempt under section 501(c)(3), classification: Charitable Organization[1].
Are contributions to Isabella Stewart Gardner Museum Inc. tax-deductible?
IRS deductibility code 1 says: Contributions are deductible[7]. It appears in Publication 78 data with status code PC[3].
Where is Isabella Stewart Gardner Museum Inc. located?
The IRS master file lists it in Boston, Massachusetts[5].
What revenue did Isabella Stewart Gardner Museum Inc. report?
The IRS master file lists total revenue of $38,992,891 for the tax period ending June 2025[4]. Its Form 990 for the tax period ending June 2023 reported total revenue of $19,283,304[12].

Facts and sources

  1. The IRS lists Isabella Stewart Gardner Museum Inc. as exempt under section 501(c)(3) of the Internal Revenue Code, classification: Charitable Organization. IRS EO Business Master File
  2. The ruling date in the IRS master file (the month and year of the IRS letter recognizing the exemption) is December 1937. IRS EO Business Master File
  3. Isabella Stewart Gardner Museum Inc. (EIN 04-2104334) appears in the IRS Publication 78 data, the list of organizations eligible to receive tax-deductible charitable contributions, with status code PC (A public charity, deductibility limitation 50% (60% for cash contributions)). IRS Tax Exempt Organization Search data
  4. For the most recent return in the IRS master file, for the tax period ending June 2025, the IRS lists total revenue of $38,992,891 and total assets of $382,282,469. IRS EO Business Master File
  5. The IRS Exempt Organizations Business Master File lists Isabella Stewart Gardner Museum Inc. with employer identification number (EIN) 04-2104334, located in Boston, Massachusetts. IRS EO Business Master File
  6. IRS foundation code 15 for Isabella Stewart Gardner Museum Inc.: Organization that receives a substantial part of its support from a governmental unit or the general public 170(b)(1)(A)(vi). IRS EO Business Master File
  7. IRS deductibility code 1 for Isabella Stewart Gardner Museum Inc.: Contributions are deductible. IRS EO Business Master File
  8. The IRS master file assigns Isabella Stewart Gardner Museum Inc. the National Taxonomy of Exempt Entities (NTEE) code A510: Arts, Culture and Humanities, Art Museums. IRS EO Business Master File
  9. IRS filing requirement code 01 for Isabella Stewart Gardner Museum Inc.: 990 (all other) or 990EZ return. IRS EO Business Master File
  10. Isabella Stewart Gardner Museum Inc.'s accounting period (fiscal year) ends in June, according to the IRS master file. IRS EO Business Master File
  11. The IRS Form 990 series e-file data released in 2026 includes a Form 990 from Isabella Stewart Gardner Museum Inc. for the tax period ending June 2025. IRS Form 990 e-file data
  12. On its Form 990 for the tax period ending June 2023, Isabella Stewart Gardner Museum Inc. reported total revenue $19,283,304, total expenses $25,793,696, net assets or fund balances at year end $294,981,464. IRS SOI Form 990 extracts
  13. Revenue lines on the Form 990 for the tax period ending June 2023: contributions, gifts and grants $10,871,153 (Part VIII, line 1h); program service revenue $5,174,911 (Part VIII, line 2g); investment income $1,503,958 (Part VIII, line 3); total revenue $19,283,304 (Part VIII, line 12). IRS SOI Form 990 extracts
  14. On its Form 990 for the tax period ending June 2021, Isabella Stewart Gardner Museum Inc. reported total revenue $30,352,820, total expenses $21,672,068, net assets or fund balances at year end $325,738,270. IRS SOI Form 990 extracts
  15. On its Form 990 for the tax period ending June 2022, Isabella Stewart Gardner Museum Inc. reported total revenue $21,324,640, total expenses $23,924,424, net assets or fund balances at year end $280,532,291. IRS SOI Form 990 extracts
  16. Balance sheet at the end of the tax period ending June 2023 (Form 990, Part X): total assets $313,588,111, total liabilities $18,606,647, net assets or fund balances $294,981,464. IRS SOI Form 990 extracts
  17. Isabella Stewart Gardner Museum Inc. reported 277 employees on Form W-3 for calendar year ending with or within the tax period ending June 2023 (Form 990, Part V, line 2a). IRS SOI Form 990 extracts
  18. On the Form 990 for the tax period ending June 2023, Isabella Stewart Gardner Museum Inc. reported 16 individuals who received more than $100,000 of reportable compensation from the organization (Part VII, line 2). IRS SOI Form 990 extracts

All figures are as the organization reported them to the IRS for the stated tax period. Say the tax period with every figure. Finance figures come from the IRS SOI annual extracts, which lag filing by one to two years. The IRS master file can list a newer period: keep the two apart and name each period. To see an organization's own filings, use the IRS Tax Exempt Organization Search.