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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 83-4055436

SYNESTHESIA SINFONIETTA

Tax-exempt · ORANGE, CA 92869

Address and contacts

Address (IRS master file)
4768 E WASHINGTON AVE, ORANGE, CA 92869-4124
In care of
% ISAIAH CASTRO
Mailing address (990-N for 2025)
4768 E Washington Ave, Orange CA 92869
Principal officer (990-N for 2025)
Eleanor Nunez, 4768 E Washington Ave, Orange CA 92869

California records

California keeps its own records of charities and corporations. Search them by EIN 83-4055436 or by the name SYNESTHESIA SINFONIETTA.

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, 2025990-N on file
2023January 31, 2024June 17, 2024990-N on file

File the 2026 990-N for SYNESTHESIA SINFONIETTA

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

IRS record

EIN
83-4055436
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
2019
Accounting year ends
January
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Eleanor Nunez
January 31, 2026≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Eleanor Nunez
January 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Isaiah Castro
January 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: Isaiah Castro
January 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Isaiah Castro
January 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Clivia Ngan
January 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 83-4055436).

Questions about SYNESTHESIA SINFONIETTA

What is the EIN of SYNESTHESIA SINFONIETTA?
The employer identification number (EIN) of SYNESTHESIA SINFONIETTA is 83-4055436.
Is SYNESTHESIA SINFONIETTA tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2019.
Are donations to SYNESTHESIA SINFONIETTA tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does SYNESTHESIA SINFONIETTA file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of SYNESTHESIA SINFONIETTA 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 SYNESTHESIA SINFONIETTA 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 SYNESTHESIA SINFONIETTA?
The 990-N for 2025 names Eleanor Nunez.

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