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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 26-4530447

OCONOMOWOC CHAMBER ORCHESTRA

Tax-exempt · OCONOMOWOC, WI 53066

Address and contacts

Address (IRS master file)
PO BOX 394, OCONOMOWOC, WI 53066-0394
Mailing address (990-N for 2025)
PO Box 394, Oconomowoc WI 53066
Principal officer (990-N for 2025)
Roberta Carpenter, 1586 Valley Rd, 109, Oconomowoc WI 53066

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

Tax yearYear endedDueIRS public records
2025May 31, 2026October 15, 2026990-N on file
2024May 31, 2025October 15, 2025990-N on file
2023May 31, 2024October 15, 2024990-N on file

File the 2026 990-N for OCONOMOWOC CHAMBER ORCHESTRA

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

IRS record

EIN
26-4530447
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2010
Accounting year ends
May
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Roberta Carpenter
May 31, 2026≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: David A Williams
May 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Roberta Carpenter
May 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Roberta Carpenter
May 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: ROBERTA CARPENTER
May 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: ROBERTA CARPENTER
May 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 26-4530447).

Questions about OCONOMOWOC CHAMBER ORCHESTRA

What is the EIN of OCONOMOWOC CHAMBER ORCHESTRA?
The employer identification number (EIN) of OCONOMOWOC CHAMBER ORCHESTRA is 26-4530447.
Is OCONOMOWOC CHAMBER ORCHESTRA tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2010.
Are donations to OCONOMOWOC CHAMBER ORCHESTRA tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does OCONOMOWOC CHAMBER ORCHESTRA file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of OCONOMOWOC CHAMBER ORCHESTRA due?
The return for tax year 2026 (the year ending May 31, 2027) is due October 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did OCONOMOWOC CHAMBER ORCHESTRA last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended May 31, 2026.
Who is the principal officer of OCONOMOWOC CHAMBER ORCHESTRA?
The 990-N for 2025 names Roberta Carpenter.

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