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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 39-1044168

WISCONSIN GEOLOGICAL SOCIETY

Tax-exempt · MILWAUKEE, WI 53215

Address and contacts

Address (IRS master file)
2209 S 34TH ST, MILWAUKEE, WI 53215-2303
In care of
% MARGARET PEARSON
Mailing address (990-N for 2025)
2209 S 34th St, Milwaukee WI 53215
Principal officer (990-N for 2025)
Sue Robinson, 2209 S 34th St, Milwaukee WI 53215

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

Tax yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026990-N on file
2024June 30, 2025November 17, 2025990-N on file
2023June 30, 2024November 15, 2024990-N on file

File the 2026 990-N for WISCONSIN GEOLOGICAL SOCIETY

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

IRS record

EIN
39-1044168
Tax-exempt status
501(c)(7): Social or recreational club
Donations deductible
No
Exempt since
1965
Accounting year ends
June
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Sue Robinson
June 30, 2026≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Sue Robinson
June 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Sue Robinson
June 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Pierre Couture
June 30, 2023≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Kathleen Klein
June 30, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: CHRISTOPHER NOHL
June 30, 2020≤ $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 39-1044168).

Questions about WISCONSIN GEOLOGICAL SOCIETY

What is the EIN of WISCONSIN GEOLOGICAL SOCIETY?
The employer identification number (EIN) of WISCONSIN GEOLOGICAL SOCIETY is 39-1044168.
Is WISCONSIN GEOLOGICAL SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(7) since 1965.
Are donations to WISCONSIN GEOLOGICAL SOCIETY tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does WISCONSIN GEOLOGICAL SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of WISCONSIN GEOLOGICAL SOCIETY due?
The return for tax year 2026 (the year ending June 30, 2027) is due November 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did WISCONSIN GEOLOGICAL SOCIETY last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended June 30, 2026.
Who is the principal officer of WISCONSIN GEOLOGICAL SOCIETY?
The 990-N for 2025 names Sue Robinson.

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