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Nonprofit · EIN 45-1498212

MAMYSH INC

Tax-exempt · ONTARIO, CA 91764

Address and contacts

Address (IRS master file)
133 E LA DENEY DR, ONTARIO, CA 91764-1752
In care of
% WILLIAM OLIVER
Mailing address (990-N for 2025)
133 E La Deney Drive, Ontario CA 91764
Principal officer (990-N for 2025)
William J Oliver, 133 E La Deney Drive, Ontario CA 91764
Website
Mamysh.com

California records

California keeps its own records of charities and corporations. Search them by EIN 45-1498212 or by the name MAMYSH INC.

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 MAMYSH INC

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

IRS record

EIN
45-1498212
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
2011
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Category (NTEE)
Human services (P40)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: William J Oliver
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: William J Oliver
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: William J Oliver
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: William J Oliver
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: William Oliver
December 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Beatrice Oliver
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Beatrice Oliver
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 45-1498212).

Questions about MAMYSH INC

What is the EIN of MAMYSH INC?
The employer identification number (EIN) of MAMYSH INC is 45-1498212.
Is MAMYSH INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2011.
Are donations to MAMYSH INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does MAMYSH INC file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of MAMYSH INC 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 MAMYSH INC 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 MAMYSH INC?
The 990-N for 2025 names William J Oliver.

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