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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 84-0875482

COLORADO ARCHAEOLOGICAL SOCIETY

Tax-exempt · DENVER, CO 80250

Address and contacts

Address (IRS master file)
PO BOX 100932, DENVER, CO 80250-0932
Mailing address (990-N for 2025)
PO Box 100932, Denver CO 80250
Principal officer (990-N for 2025)
Michele M Giometti, 12356 W Texas Drive, LAKEWOOD CO 80228

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 COLORADO ARCHAEOLOGICAL SOCIETY

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

IRS record

EIN
84-0875482
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Group exemption
Exempt since
1985
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Group exemption
7077 (9 member organizations)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Michele M Giometti
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Michele M Giometti
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Michele Giometti
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Michele Giometti
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2016
Officer: Karen Kinnear
December 31, 2016≤ $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 84-0875482).

Questions about COLORADO ARCHAEOLOGICAL SOCIETY

What is the EIN of COLORADO ARCHAEOLOGICAL SOCIETY?
The employer identification number (EIN) of COLORADO ARCHAEOLOGICAL SOCIETY is 84-0875482.
Is COLORADO ARCHAEOLOGICAL SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1985.
Are donations to COLORADO ARCHAEOLOGICAL SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Group exemption).
Which annual return does COLORADO ARCHAEOLOGICAL SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of COLORADO ARCHAEOLOGICAL 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 COLORADO ARCHAEOLOGICAL 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 COLORADO ARCHAEOLOGICAL SOCIETY?
The 990-N for 2025 names Michele M Giometti.

Organizations in its group exemption (9)

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