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Nonprofit · EIN 15-0564076

JEFFERSON COUNTY HISTORICAL SOCIETY

Tax-exempt (reinstated) · WATERTOWN, NY 13601

Address and contacts

Address (IRS master file)
228 WASHINGTON ST, WATERTOWN, NY 13601-3301

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. 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, 2026Check at the IRS
2024December 31, 2024May 15, 2025Check at the IRS
2023December 31, 2023May 15, 2024Check at the IRS

IRS record

EIN
15-0564076
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
2026
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$1,744,772
Income (IRS master file)
$96,525

Revocation and reinstatement

Exemption revoked
May 15, 2025
Posted by the IRS
August 12, 2025
Reinstated
Effective May 15, 2025

From the IRS automatic revocation list: organizations that did not file a required return or e-Postcard for three consecutive years.

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2021–––IRS
990December 2020–––IRS
990December 2018–––IRS

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 15-0564076).

Questions about JEFFERSON COUNTY HISTORICAL SOCIETY

What is the EIN of JEFFERSON COUNTY HISTORICAL SOCIETY?
The employer identification number (EIN) of JEFFERSON COUNTY HISTORICAL SOCIETY is 15-0564076.
Is JEFFERSON COUNTY HISTORICAL SOCIETY tax-exempt?
Yes. The IRS revoked its exemption on May 15, 2025 and reinstated it effective May 15, 2025.
Are donations to JEFFERSON COUNTY HISTORICAL SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does JEFFERSON COUNTY HISTORICAL SOCIETY file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of JEFFERSON COUNTY HISTORICAL 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 JEFFERSON COUNTY HISTORICAL SOCIETY last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended December 2021.

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