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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 13-6167920

INTERNATIONAL SCHOOL OF BRUSSELS

Also known as OPPENHEIMER WOLFF & DONNELLY

Tax-exempt · PRINCETON, NJ 08543

Address and contacts

Address (IRS master file)
PO BOX 5910, PRINCETON, NJ 08543-5910
In care of
% D SIMON
Mailing address (990-N for 2024)
PO Box 5910, Princeton NJ 08543
Principal officer (990-N for 2024)
Jeff Weaver, 15 Roszel Road, Princeton NJ 08540

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 16, 2027Not due yet
2024September 30, 2025February 17, 2026990-N on file
2023September 30, 2024February 18, 2025990-N on file

File the 2025 990-N for INTERNATIONAL SCHOOL OF BRUSSELS

Due February 16, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
13-6167920
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
1964
Accounting year ends
September
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2024
Officer: Jeff Weaver
September 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Karen Joyce
September 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Karen Joyce
September 30, 2023≤ $50,000 receipts––e-Postcard
990-EZSeptember 2022–––IRS
990September 2021–––IRS
990September 2020–––IRS

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 13-6167920).

Questions about INTERNATIONAL SCHOOL OF BRUSSELS

What is the EIN of INTERNATIONAL SCHOOL OF BRUSSELS?
The employer identification number (EIN) of INTERNATIONAL SCHOOL OF BRUSSELS is 13-6167920.
Is INTERNATIONAL SCHOOL OF BRUSSELS tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1964.
Are donations to INTERNATIONAL SCHOOL OF BRUSSELS tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does INTERNATIONAL SCHOOL OF BRUSSELS file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of INTERNATIONAL SCHOOL OF BRUSSELS due?
The return for tax year 2025 (the year ending September 30, 2026) is due February 16, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did INTERNATIONAL SCHOOL OF BRUSSELS last file with the IRS?
The latest return in the IRS public files is the 990-N for 2024 for the year ended September 30, 2025.
Who is the principal officer of INTERNATIONAL SCHOOL OF BRUSSELS?
The 990-N for 2024 names Jeff Weaver.

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