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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 39-6054687

MILWAUKEE ASTRONOMICAL SOCIETY

Tax-exempt · RACINE, WI 53402

Address and contacts

Address (IRS master file)
5022 CITATION DR, RACINE, WI 53402-2373
In care of
% SUSAN TIMLIN
Mailing address (990-N for 2024)
5022 Citation Dr, Racine WI 53402
Principal officer (990-N for 2024)
John E Koors, 5022 Citation Dr, Racine WI 53402

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

Tax yearYear endedDueIRS public records
2025August 31, 2026January 15, 2027Not due yet
2024August 31, 2025January 15, 2026990-N on file
2023August 31, 2024January 15, 2025990-N on file

File the 2025 990-N for MILWAUKEE ASTRONOMICAL SOCIETY

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

IRS record

EIN
39-6054687
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1947
Accounting year ends
August
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2024
Officer: John E Koors
August 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: John Koors
August 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Susan Carol Timlin
August 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: Susan Carol Timlin
August 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Susan C Timlin
August 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2018
Officer: Susan C Timlin
August 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 39-6054687).

Questions about MILWAUKEE ASTRONOMICAL SOCIETY

What is the EIN of MILWAUKEE ASTRONOMICAL SOCIETY?
The employer identification number (EIN) of MILWAUKEE ASTRONOMICAL SOCIETY is 39-6054687.
Is MILWAUKEE ASTRONOMICAL SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1947.
Are donations to MILWAUKEE ASTRONOMICAL SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does MILWAUKEE ASTRONOMICAL SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of MILWAUKEE ASTRONOMICAL SOCIETY due?
The return for tax year 2025 (the year ending August 31, 2026) is due January 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did MILWAUKEE ASTRONOMICAL SOCIETY last file with the IRS?
The latest return in the IRS public files is the 990-N for 2024 for the year ended August 31, 2025.
Who is the principal officer of MILWAUKEE ASTRONOMICAL SOCIETY?
The 990-N for 2024 names John E Koors.

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