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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 51-0184423

OPTIMIST INTERNATIONAL

Also known as 24227 OC OF WEST CHESTER-LAKOTA OH

Tax-exempt · MASON, OH 45040

Address and contacts

Address (IRS master file)
6708 TRADITION TRL, MASON, OH 45040-7654
In care of
% BRIELLE MAYNOR
Mailing address (990-N for 2025)
6708 Tradition Trail, Mason OH 45040
Principal officer (990-N for 2025)
Jeffrey D Matthews, 6708 Tradition Trail, Mason OH 45040

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

Tax yearYear endedDueIRS public records
2025September 30, 2026February 15, 2027990-N on file
2024September 30, 2025February 16, 2026No data
2023September 30, 2024February 17, 2025No data

File the 2026 990-N for OPTIMIST INTERNATIONAL

Due February 15, 2028 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
51-0184423
Tax-exempt status
501(c)(4): Social welfare organization
Donations deductible
No
Exempt since
1958
Accounting year ends
September
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Jeffrey D Matthews
September 30, 2026≤ $50,000 receipts––e-Postcard

990-N: the IRS publishes only the latest e-Postcard per organization; earlier years appear here as 990.tax collects the monthly files. 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.

Questions about OPTIMIST INTERNATIONAL

What is the EIN of OPTIMIST INTERNATIONAL?
The employer identification number (EIN) of OPTIMIST INTERNATIONAL is 51-0184423.
Is OPTIMIST INTERNATIONAL tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(4) since 1958.
Are donations to OPTIMIST INTERNATIONAL tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does OPTIMIST INTERNATIONAL file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of OPTIMIST INTERNATIONAL due?
The return for tax year 2026 (the year ending September 30, 2027) is due February 15, 2028. Form 8868 extends it by six months; the 990-N cannot be extended.
When did OPTIMIST INTERNATIONAL last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended September 30, 2026.
Who is the principal officer of OPTIMIST INTERNATIONAL?
The 990-N for 2025 names Jeffrey D Matthews.

Other nonprofits in MASON

All nonprofits in MASON · Ohio