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EIN23-7185827

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Federation of American Scientists

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

Exempt under
501(c)(3)[1]
IRS ruling date
July 1972[2]
Publication 78 data
Listed (PC)[3]
Total revenue, period ending Jun 2025
$35,602,788[4]

Federation of American Scientists is listed in IRS records in Washington, District of Columbia, as exempt under section 501(c)(3)[5][1]. The IRS master file lists total revenue of $35,602,788 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 16: organization that normally receives no more than one-third of its support from gross investment income and unrelated business income and at the same time more than one-third of its support from contributions, fees, and gross receipts related to exempt purposes 509(a)(2)[6]. It appears in IRS Publication 78 data with status code PC, a public charity, deductibility limitation 50% (60% for cash contributions)[3].

Item IRS record
EIN[5] 23-7185827
Location in IRS records[5] Washington, District of Columbia
Exempt under[1] Section 501(c)(3)
IRS classification[1] Charitable Organization
Ruling date[2] July 1972
Foundation code[6] 16: Organization that normally receives no more than one-third of its support from gross investment income and unrelated business income and at the same time more than one-third of its support from contributions, fees, and gross receipts related to exempt purposes 509(a)(2)
Deductibility code[7] 1: Contributions are deductible
Publication 78 data[3] Listed, status PC
NTEE code[8] Q41: International, Foreign Affairs and National Security, Arms Control, Peace
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 $11,455,084, total expenses of $18,307,032 and net assets of $21,473,169[12]. Contributions, gifts and grants were $11,271,212 on that return[13]. On its Form 990 for the tax period ending June 2022, it reported total revenue of $28,862,818[14]. On its Form 990 for the tax period ending June 2021, it reported total revenue of $3,626,877[15]. Separately, the IRS master file lists total revenue of $35,602,788 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 $35,602,788 and total assets of $36,146,420.[4]

June 2021: total revenue $3.6M$3.6MJune 2021: total expenses $4.9M$4.9MJun 2021June 2022: total revenue $28.9M$28.9MJune 2022: total expenses $8.4M$8.4MJun 2022June 2023: total revenue $11.5M$11.5MJune 2023: total expenses $18.3M$18.3MJun 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[15]Form 990$3,626,877$4,910,525$7,866,187
June 2022[14]Form 990$28,862,818$8,407,200$28,327,222
June 2023[12]Form 990$11,455,084$18,307,032$21,473,169

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] $28,887,502
Total liabilities[16] $7,414,333
Net assets or fund balances[16] $21,473,169

Employees. Federation of American Scientists reported 54 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, Federation of American Scientists reported 20 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 Federation of American Scientists?
The IRS master file lists employer identification number 23-7185827 for the organization[5].
Is Federation of American Scientists a 501(c)(3)?
Yes, the IRS lists it as exempt under section 501(c)(3), classification: Charitable Organization[1].
Are contributions to Federation of American Scientists tax-deductible?
The IRS deductibility code is 1: Contributions are deductible[7]. It appears in Publication 78 data with status code PC[3].
Where is Federation of American Scientists located?
The IRS master file lists it in Washington, District of Columbia[5].
What is the reported revenue of Federation of American Scientists?
The IRS master file lists total revenue of $35,602,788 for the tax period ending June 2025[4]. Its Form 990 for the tax period ending June 2023 reported total revenue of $11,455,084[12].

Facts and sources

  1. The IRS lists Federation of American Scientists 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 July 1972. IRS EO Business Master File
  3. Federation of American Scientists (EIN 23-7185827) 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 $35,602,788 and total assets of $36,146,420. IRS EO Business Master File
  5. The IRS Exempt Organizations Business Master File lists Federation of American Scientists with employer identification number (EIN) 23-7185827, located in Washington, District of Columbia. IRS EO Business Master File
  6. IRS foundation code 16 for Federation of American Scientists: Organization that normally receives no more than one-third of its support from gross investment income and unrelated business income and at the same time more than one-third of its support from contributions, fees, and gross receipts... IRS EO Business Master File
  7. IRS deductibility code 1 for Federation of American Scientists: Contributions are deductible. IRS EO Business Master File
  8. The IRS master file assigns Federation of American Scientists the National Taxonomy of Exempt Entities (NTEE) code Q41: International, Foreign Affairs and National Security, Arms Control, Peace. IRS EO Business Master File
  9. IRS filing requirement code 01 for Federation of American Scientists: 990 (all other) or 990EZ return. IRS EO Business Master File
  10. Federation of American Scientists'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 Federation of American Scientists 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, Federation of American Scientists reported total revenue $11,455,084, total expenses $18,307,032, net assets or fund balances at year end $21,473,169. IRS SOI Form 990 extracts
  13. Revenue lines on the Form 990 for the tax period ending June 2023: contributions, gifts and grants $11,271,212 (Part VIII, line 1h); investment income $177,857 (Part VIII, line 3); total revenue $11,455,084 (Part VIII, line 12). IRS SOI Form 990 extracts
  14. On its Form 990 for the tax period ending June 2022, Federation of American Scientists reported total revenue $28,862,818, total expenses $8,407,200, net assets or fund balances at year end $28,327,222. IRS SOI Form 990 extracts
  15. On its Form 990 for the tax period ending June 2021, Federation of American Scientists reported total revenue $3,626,877, total expenses $4,910,525, net assets or fund balances at year end $7,866,187. IRS SOI Form 990 extracts
  16. Balance sheet at the end of the tax period ending June 2023 (Form 990, Part X): total assets $28,887,502, total liabilities $7,414,333, net assets or fund balances $21,473,169. IRS SOI Form 990 extracts
  17. Federation of American Scientists reported 54 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, Federation of American Scientists reported 20 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.