Skip to main content
IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 13-3841388

TINKER INSTITUTE ON INTERNATIONAL LAW AND ORGANIZATIONS INC

Also known as T I I L O

Tax-exempt · NEW YORK, NY 10003

Address and contacts

Address (IRS master file)
11 5TH AVE 7A, NEW YORK, NY 10003-4342
In care of
% CATHERINE TINKER
Mailing address (990-N for 2025)
11 5th Ave 7A, New York NY 10003
Principal officer (990-N for 2025)
Catherine TInker, 11 5th Ave 7AB, New York NY 10003

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

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

File the 2026 990-N for TINKER INSTITUTE ON INTERNATIONAL LAW AND ORGANIZATIONS INC

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
13-3841388
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
1996
Accounting year ends
December
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Catherine TInker
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Dr Catherine Tinker
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Catherine Tinker
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Catherine Tinker
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: Catherine Tinker
December 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Catherine Tinker
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Catherine Tinker
December 31, 2019≤ $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 13-3841388).

Questions about TINKER INSTITUTE ON INTERNATIONAL LAW AND ORGANIZATIONS INC

What is the EIN of TINKER INSTITUTE ON INTERNATIONAL LAW AND ORGANIZATIONS INC?
The employer identification number (EIN) of TINKER INSTITUTE ON INTERNATIONAL LAW AND ORGANIZATIONS INC is 13-3841388.
Is TINKER INSTITUTE ON INTERNATIONAL LAW AND ORGANIZATIONS INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1996.
Are donations to TINKER INSTITUTE ON INTERNATIONAL LAW AND ORGANIZATIONS INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does TINKER INSTITUTE ON INTERNATIONAL LAW AND ORGANIZATIONS INC file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of TINKER INSTITUTE ON INTERNATIONAL LAW AND ORGANIZATIONS INC due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did TINKER INSTITUTE ON INTERNATIONAL LAW AND ORGANIZATIONS INC last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended December 31, 2025.
Who is the principal officer of TINKER INSTITUTE ON INTERNATIONAL LAW AND ORGANIZATIONS INC?
The 990-N for 2025 names Catherine TInker.

Other nonprofits in NEW YORK

All nonprofits in NEW YORK · New York · Arts, culture and humanities