Nonprofit · EIN 23-7373929
NASSAU SUFFOLK CIVIL ENGINEERS
Tax-exempt · RIVERHEAD, NY 11901
Address and contacts
- Address (IRS master file)
- 400 OSTRANDER AVE, RIVERHEAD, NY 11901-4614
- In care of
- % JOHN MAYER
- Mailing address (990-N for 2025)
- 400 Ostrander Avenue, Riverhead NY 11901
- Principal officer (990-N for 2025)
- Daniel Weaver, 300 Pantigo Pl Suite 116, East Hampton NY 11937
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 June, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | 990-N on file |
| 2024 | June 30, 2025 | November 17, 2025 | 990-N on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990-N on file |
IRS record
- EIN
- 23-7373929
- Tax-exempt status
- 501(c)(6): Business league or chamber of commerce
- Donations deductible
- No
- Exempt since
- 2011
- Accounting year ends
- June
- Files
- Form 990-N (e-Postcard)
- Category (NTEE)
- Science and technology (U03)
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-N for 2025 Officer: Daniel Weaver | June 30, 2026 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2024 Officer: Daniel Weaver | June 30, 2025 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2023 Officer: ScottGillis | June 30, 2024 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2022 Officer: Scott Gillis | June 30, 2023 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2020 Officer: Frank Ferrantello | June 30, 2021 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2019 Officer: Frank Ferrantello | June 30, 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 23-7373929).
Questions about NASSAU SUFFOLK CIVIL ENGINEERS
- What is the EIN of NASSAU SUFFOLK CIVIL ENGINEERS?
- The employer identification number (EIN) of NASSAU SUFFOLK CIVIL ENGINEERS is 23-7373929.
- Is NASSAU SUFFOLK CIVIL ENGINEERS tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(6) since 2011.
- Are donations to NASSAU SUFFOLK CIVIL ENGINEERS tax-deductible?
- No. The IRS master file says contributions to it are not deductible.
- Which annual return does NASSAU SUFFOLK CIVIL ENGINEERS file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of NASSAU SUFFOLK CIVIL ENGINEERS due?
- The return for tax year 2026 (the year ending June 30, 2027) is due November 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did NASSAU SUFFOLK CIVIL ENGINEERS last file with the IRS?
- The latest return in the IRS public files is the 990-N for 2025 for the year ended June 30, 2026.
- Who is the principal officer of NASSAU SUFFOLK CIVIL ENGINEERS?
- The 990-N for 2025 names Daniel Weaver.
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