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Nonprofit · EIN 23-7111622

SOUTHWESTERN OHIO SELF-INSURERS ASSOCIATION

Tax-exempt (reinstated) · MASON, OH 45040

Address and contacts

Address (IRS master file)
PO BOX 285, MASON, OH 45040-0285
In care of
% TAMMY FIELER
Mailing address (990-N for 2024)
PO BOX 285, MASON OH 45040
Principal officer (990-N for 2024)
SEAN MASTIN, 221 E 4TH STREET, CINCINNATI OH 45202

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 yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026Not due yet
2024June 30, 2025November 17, 2025990-N on file
2023June 30, 2024November 15, 2024990-N on file

File the 2025 990-N for SOUTHWESTERN OHIO SELF-INSURERS ASSOCIATION

Due November 16, 2026 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
23-7111622
Tax-exempt status
501(c)(6): Business league or chamber of commerce
Donations deductible
No
Exempt since
2024
Accounting year ends
June
Files
Form 990-N (e-Postcard)

Revocation and reinstatement

Exemption revoked
November 15, 2022
Posted by the IRS
March 13, 2023
Reinstated
Effective November 15, 2022

From the IRS automatic revocation list: organizations that did not file a required return or e-Postcard for three consecutive years.

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2024
Officer: SEAN MASTIN
June 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Sean Mastin
June 30, 2024≤ $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 23-7111622).

Questions about SOUTHWESTERN OHIO SELF-INSURERS ASSOCIATION

What is the EIN of SOUTHWESTERN OHIO SELF-INSURERS ASSOCIATION?
The employer identification number (EIN) of SOUTHWESTERN OHIO SELF-INSURERS ASSOCIATION is 23-7111622.
Is SOUTHWESTERN OHIO SELF-INSURERS ASSOCIATION tax-exempt?
Yes. The IRS revoked its exemption on November 15, 2022 and reinstated it effective November 15, 2022.
Are donations to SOUTHWESTERN OHIO SELF-INSURERS ASSOCIATION tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does SOUTHWESTERN OHIO SELF-INSURERS ASSOCIATION file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of SOUTHWESTERN OHIO SELF-INSURERS ASSOCIATION due?
The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did SOUTHWESTERN OHIO SELF-INSURERS ASSOCIATION last file with the IRS?
The latest return in the IRS public files is the 990-N for 2024 for the year ended June 30, 2025.
Who is the principal officer of SOUTHWESTERN OHIO SELF-INSURERS ASSOCIATION?
The 990-N for 2024 names SEAN MASTIN.

Other nonprofits in MASON

All nonprofits in MASON · Ohio · Mutual and membership benefit