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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 43-1697576

INSTITUTE OF CLASSICAL ARCHAEOLOGY

Tax-exempt · SAINT LOUIS, MO 63110

Address and contacts

Address (IRS master file)
3615 FLORA PL, SAINT LOUIS, MO 63110-3703
In care of
% SARANTIS SYMEONOGLOU
Mailing address (990-N for 2024)
3615 FLORA PL, SAINT LOUIS MO 631103703
Principal officer (990-N for 2024)
Sarantis Symeonoglou, 3615 flora place, St LOUIS MO 63110

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, 2026Not on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024990-N on file

File the 2025 990-N for INSTITUTE OF CLASSICAL ARCHAEOLOGY

Due May 15, 2026 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
43-1697576
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
1996
Accounting year ends
December
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2024
Officer: Sarantis Symeonoglou
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: SARANTIS SYMEONOGLOU
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Sarantis Symeonoglou
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: Sarantis symeonoglou
December 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Sarantis symeonoglou
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Sarantis Symeonoglou
December 31, 2019≤ $50,000 receipts––e-Postcard
990-N for 2018
Officer: Sarantis Symeonoglou
December 31, 2018≤ $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 43-1697576).

Questions about INSTITUTE OF CLASSICAL ARCHAEOLOGY

What is the EIN of INSTITUTE OF CLASSICAL ARCHAEOLOGY?
The employer identification number (EIN) of INSTITUTE OF CLASSICAL ARCHAEOLOGY is 43-1697576.
Is INSTITUTE OF CLASSICAL ARCHAEOLOGY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1996.
Are donations to INSTITUTE OF CLASSICAL ARCHAEOLOGY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does INSTITUTE OF CLASSICAL ARCHAEOLOGY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of INSTITUTE OF CLASSICAL ARCHAEOLOGY due?
The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did INSTITUTE OF CLASSICAL ARCHAEOLOGY last file with the IRS?
The latest return in the IRS public files is the 990-N for 2024 for the year ended December 31, 2024.
Who is the principal officer of INSTITUTE OF CLASSICAL ARCHAEOLOGY?
The 990-N for 2024 names Sarantis Symeonoglou.

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