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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 01-0704967

MARY STOLFA CANCER FOUNDATION

Tax-exempt · SYOSSET, NY 11791

Address and contacts

Address (IRS master file)
PO BOX 644, SYOSSET, NY 11791-0644
In care of
% MARY STOLFA
Mailing address (990-N for 2025)
PO Box 644, Syosset NY 11791
Principal officer (990-N for 2025)
Mary Stolfa, PO Box 644, Syosset NY 11791

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in April, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025April 30, 2026September 15, 2026990-N on file
2024April 30, 2025September 15, 2025990-N on file
2023April 30, 2024September 16, 2024990-N on file

File the 2026 990-N for MARY STOLFA CANCER FOUNDATION

Due September 15, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
01-0704967
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2002
Accounting year ends
April
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Mary Stolfa
April 30, 2026≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Mary Stolfa
April 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Mary Stolfa
April 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Mary Stolfa
April 30, 2023≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: MARY STOLFA
April 30, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: MARY STOLFA
April 30, 2020≤ $50,000 receipts––e-Postcard
990-EZApril 2019–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 01-0704967).

Questions about MARY STOLFA CANCER FOUNDATION

What is the EIN of MARY STOLFA CANCER FOUNDATION?
The employer identification number (EIN) of MARY STOLFA CANCER FOUNDATION is 01-0704967.
Is MARY STOLFA CANCER FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2002.
Are donations to MARY STOLFA CANCER FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does MARY STOLFA CANCER FOUNDATION file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of MARY STOLFA CANCER FOUNDATION due?
The return for tax year 2026 (the year ending April 30, 2027) is due September 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did MARY STOLFA CANCER FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended April 30, 2026.
Who is the principal officer of MARY STOLFA CANCER FOUNDATION?
The 990-N for 2025 names Mary Stolfa.

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