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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 94-3149297

SAN MATEO COUNTY COUNCIL OF ENGINEERS

Tax-exempt · REDWOOD CITY, CA 94063

Address and contacts

Address (IRS master file)
555 COUNTY CENTER 5TH FLOOR, REDWOOD CITY, CA 94063-1665
In care of
% KRZYSZTOF LISAJ
Mailing address (990-N for 2025)
555 County Center 5th Floor, Redwood City CA 94063
Principal officer (990-N for 2025)
Atkins De Guzman, 555 County Center 5th Floor, Redwood City CA 94063

California records

California keeps its own records of charities and corporations. Search them by EIN 94-3149297 or by the name SAN MATEO COUNTY COUNCIL OF ENGINEERS.

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 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 SAN MATEO COUNTY COUNCIL OF ENGINEERS

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

IRS record

EIN
94-3149297
Tax-exempt status
501(c)(5): Labor, agricultural or horticultural organization
Donations deductible
No
Exempt since
1992
Accounting year ends
December
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Atkins De Guzman
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Milton Wong
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: MILTON WONG
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: Sherry Liu
December 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Joshua Rawley
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Joshua Rawley
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 94-3149297).

Questions about SAN MATEO COUNTY COUNCIL OF ENGINEERS

What is the EIN of SAN MATEO COUNTY COUNCIL OF ENGINEERS?
The employer identification number (EIN) of SAN MATEO COUNTY COUNCIL OF ENGINEERS is 94-3149297.
Is SAN MATEO COUNTY COUNCIL OF ENGINEERS tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(5) since 1992.
Are donations to SAN MATEO COUNTY COUNCIL OF ENGINEERS tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does SAN MATEO COUNTY COUNCIL OF ENGINEERS file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of SAN MATEO COUNTY COUNCIL OF ENGINEERS 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 SAN MATEO COUNTY COUNCIL OF ENGINEERS 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 SAN MATEO COUNTY COUNCIL OF ENGINEERS?
The 990-N for 2025 names Atkins De Guzman.

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