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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 20-1161717

WACO MAMMOTH FOUNDATION INC

Tax-exempt · WACO, TX 76703

Address and contacts

Address (IRS master file)
PO BOX 326, WACO, TX 76703-0326
In care of
% BAYLOR UNIVERSITY
Mailing address (990-N for 2024)
PO BOX 326, WACO TX 76703
Principal officer (990-N for 2024)
JACK MCKINNEY, PO BOX 326, WACO TX 76703

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

Tax yearYear endedDueIRS public records
2025September 30, 2026February 15, 2027Not due yet
2024September 30, 2025February 16, 2026990-N on file
2023September 30, 2024February 17, 2025990-N on file

File the 2025 990-N for WACO MAMMOTH FOUNDATION INC

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

IRS record

EIN
20-1161717
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
2006
Accounting year ends
September
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2024
Officer: JACK MCKINNEY
September 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: HECTOR SABIDO
September 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: HECTOR SABIDO
September 30, 2023≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: JAMIE GOBLE
September 30, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: WILLIAM MCGOVERN
September 30, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: WILLIAM MCGOVERN
September 30, 2020≤ $50,000 receipts––e-Postcard
990-N for 2018
Officer: HEYWARD TAYLOR
September 30, 2019≤ $50,000 receipts––e-Postcard
990-EZSeptember 2018–––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 20-1161717).

Questions about WACO MAMMOTH FOUNDATION INC

What is the EIN of WACO MAMMOTH FOUNDATION INC?
The employer identification number (EIN) of WACO MAMMOTH FOUNDATION INC is 20-1161717.
Is WACO MAMMOTH FOUNDATION INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2006.
Are donations to WACO MAMMOTH FOUNDATION INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does WACO MAMMOTH FOUNDATION INC file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of WACO MAMMOTH FOUNDATION INC due?
The return for tax year 2025 (the year ending September 30, 2026) is due February 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did WACO MAMMOTH FOUNDATION INC last file with the IRS?
The latest return in the IRS public files is the 990-N for 2024 for the year ended September 30, 2025.
Who is the principal officer of WACO MAMMOTH FOUNDATION INC?
The 990-N for 2024 names JACK MCKINNEY.

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