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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 94-6114554

EASTBAY ASTRONOMICAL SOCIETY

Tax-exempt · OAKLAND, CA 94619

Address and contacts

Address (IRS master file)
PO BOX 18635, OAKLAND, CA 94619-0635
In care of
% RICHARD OZER
Mailing address (990-N for 2025)
PO Box 18635, Oakland CA 94619
Principal officer (990-N for 2025)
Rebecca Arntz, 1633 Graff Court, San Leandro CA 94577

California records

California keeps its own records of charities and corporations. Search them by EIN 94-6114554 or by the name EASTBAY ASTRONOMICAL SOCIETY.

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 EASTBAY ASTRONOMICAL SOCIETY

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

IRS record

EIN
94-6114554
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
1985
Accounting year ends
December
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Rebecca Arntz
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Rebecca Arntz
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Richard Ozer
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Richard Ozer
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Richard Ozer
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Richard Ozer
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 94-6114554).

Questions about EASTBAY ASTRONOMICAL SOCIETY

What is the EIN of EASTBAY ASTRONOMICAL SOCIETY?
The employer identification number (EIN) of EASTBAY ASTRONOMICAL SOCIETY is 94-6114554.
Is EASTBAY ASTRONOMICAL SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1985.
Are donations to EASTBAY ASTRONOMICAL SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does EASTBAY ASTRONOMICAL SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of EASTBAY ASTRONOMICAL SOCIETY 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 EASTBAY ASTRONOMICAL SOCIETY 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 EASTBAY ASTRONOMICAL SOCIETY?
The 990-N for 2025 names Rebecca Arntz.

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