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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 39-2883726

SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL SOCIETY

Tax-exempt · SAN DIEGO, CA 92123

Address and contacts

Address (IRS master file)
3017 MELBOURNE DR, SAN DIEGO, CA 92123-3132
Mailing address (990-N for 2025)
3017 Melbourne Dr, San Diego CA 92123
Principal officer (990-N for 2025)
Thang Nguyen, 3017 Melbourne Dr, San Diego CA 92123

California records

California keeps its own records of charities and corporations. Search them by EIN 39-2883726 or by the name SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL 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 January, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025January 31, 2026June 15, 2026990-N on file
2024January 31, 2025June 16, 2025Check at the IRS
2023January 31, 2024June 17, 2024Check at the IRS

File the 2026 990-N for SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL SOCIETY

Due June 15, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
39-2883726
Tax-exempt status
501(c)(7): Social or recreational club
Donations deductible
No
Exempt since
2025
Accounting year ends
January
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Thang Nguyen
January 31, 2026≤ $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 39-2883726).

Questions about SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL SOCIETY

What is the EIN of SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL SOCIETY?
The employer identification number (EIN) of SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL SOCIETY is 39-2883726.
Is SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(7) since 2025.
Are donations to SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL SOCIETY tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL SOCIETY due?
The return for tax year 2026 (the year ending January 31, 2027) is due June 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL SOCIETY last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended January 31, 2026.
Who is the principal officer of SAN DIEGO GROTTO OF THE NATIONAL SPELEOLOGICAL SOCIETY?
The 990-N for 2025 names Thang Nguyen.

Other nonprofits in SAN DIEGO

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