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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 23-7043009

MILWAUKEE NUMISMATIC SOCIETY

Tax-exempt · WAUWATOSA, WI 53226

Address and contacts

Address (IRS master file)
PO BOX 26886, WAUWATOSA, WI 53226-0886
In care of
% LEE HARTZ
Mailing address (990-N for 2025)
PO Box 26886, Wauwatosa WI 53226
Principal officer (990-N for 2025)
Christopher A Kantak Treasurer, PO Box 26886, Wauwatosa WI 53226

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 MILWAUKEE NUMISMATIC SOCIETY

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

IRS record

EIN
23-7043009
Tax-exempt status
501(c)(4): Social welfare organization
Donations deductible
No
Exempt since
1970
Accounting year ends
December
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Christopher A Kantak Treasurer
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Justin Perrault President
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Justin Perrault President
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Justin Perrault President
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Justin Perrault President
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Christopher A Kantak Treasurer
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 23-7043009).

Questions about MILWAUKEE NUMISMATIC SOCIETY

What is the EIN of MILWAUKEE NUMISMATIC SOCIETY?
The employer identification number (EIN) of MILWAUKEE NUMISMATIC SOCIETY is 23-7043009.
Is MILWAUKEE NUMISMATIC SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(4) since 1970.
Are donations to MILWAUKEE NUMISMATIC SOCIETY tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does MILWAUKEE NUMISMATIC SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of MILWAUKEE NUMISMATIC 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 MILWAUKEE NUMISMATIC 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 MILWAUKEE NUMISMATIC SOCIETY?
The 990-N for 2025 names Christopher A Kantak Treasurer.

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