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Nonprofit · EIN 46-4623759

MATHOVERFLOW

Tax-exempt · STANFORD, CA 94305

Address and contacts

Address (IRS master file)
450 SERRA MALL, STANFORD, CA 94305-2004
In care of
% FRANCOIS DORAIS
Mailing address (990-N for 2025)
450 Serra Mall, STANFORD CA 94305
Principal officer (990-N for 2025)
FRANCOIS GILBERT DORAIS, 7 CLYMER ST, Burlington VT 05401

California records

California keeps its own records of charities and corporations. Search them by EIN 46-4623759 or by the name MATHOVERFLOW.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

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 December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-N on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024990-N on file

File the 2026 990-N for MATHOVERFLOW

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
46-4623759
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
2014
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Category (NTEE)
Education (B99)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: FRANCOIS GILBERT DORAIS
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: FRANCOIS GILBERT DORAIS
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: FRANCOIS GILBERT DORAIS
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: FRANCOIS G DORAIS
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Francois Gilbert Dorais
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: FRANCOIS GILBERT DORAIS
December 31, 2019≤ $50,000 receipts––e-Postcard

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 46-4623759).

Questions about MATHOVERFLOW

What is the EIN of MATHOVERFLOW?
The employer identification number (EIN) of MATHOVERFLOW is 46-4623759.
Is MATHOVERFLOW tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2014.
Are donations to MATHOVERFLOW tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does MATHOVERFLOW file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of MATHOVERFLOW due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did MATHOVERFLOW last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended December 31, 2025.
Who is the principal officer of MATHOVERFLOW?
The 990-N for 2025 names FRANCOIS GILBERT DORAIS.

Other nonprofits in STANFORD

All nonprofits in STANFORD · California · Education