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Nonprofit · EIN 51-0160171

SANTA CRUZ ARCHAEOLOGICAL SOCIETY

Tax-exempt · SOQUEL, CA 95073

Address and contacts

Address (IRS master file)
PO BOX 85, SOQUEL, CA 95073-0085
In care of
% SANTA CRUZ MUSEUM
Mailing address (990-N for 2025)
PO BOX 85, Soquel CA 95073
Principal officer (990-N for 2025)
Catherine Phipps, 3737 Vista Drive, Soquel CA 95073

California records

California keeps its own records of charities and corporations. Search them by EIN 51-0160171 or by the name SANTA CRUZ ARCHAEOLOGICAL SOCIETY.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

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

Tax yearYear endedDueIRS public records
2025March 31, 2026August 17, 2026990-N on file
2024March 31, 2025August 15, 2025990-N on file
2023March 31, 2024August 15, 2024990-N on file

File the 2026 990-N for SANTA CRUZ ARCHAEOLOGICAL SOCIETY

Due August 16, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
51-0160171
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1978
Accounting year ends
March
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Catherine Phipps
March 31, 2026≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Kevin Hildreth
March 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Karen Johansson
March 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Kevin Hildreth
March 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Kevin Hildreth
March 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Kevin Hildreth
March 31, 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 51-0160171).

Questions about SANTA CRUZ ARCHAEOLOGICAL SOCIETY

What is the EIN of SANTA CRUZ ARCHAEOLOGICAL SOCIETY?
The employer identification number (EIN) of SANTA CRUZ ARCHAEOLOGICAL SOCIETY is 51-0160171.
Is SANTA CRUZ ARCHAEOLOGICAL SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1978.
Are donations to SANTA CRUZ ARCHAEOLOGICAL SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does SANTA CRUZ ARCHAEOLOGICAL SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of SANTA CRUZ ARCHAEOLOGICAL SOCIETY due?
The return for tax year 2026 (the year ending March 31, 2027) is due August 16, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did SANTA CRUZ 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 March 31, 2026.
Who is the principal officer of SANTA CRUZ ARCHAEOLOGICAL SOCIETY?
The 990-N for 2025 names Catherine Phipps.

Other nonprofits in SOQUEL

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