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Nonprofit · EIN 11-6035623

CUSTER INSTITUTE INC

Tax-exempt · SOUTHOLD, NY 11971

Financials

$81K$69K2023$125K$98K2024
Revenue Expenses · by fiscal year end
Financials of CUSTER INSTITUTE INC by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
June 30, 2025990-EZ$125,275$98,351$26,924$199,337$0$199,337
June 30, 2024990-EZ$80,616$68,999$11,617$172,413$0$172,413
Financial details: 990-EZ for the year ended June 30, 2025

Revenue

Contributions, gifts and grants
$104,518
Membership dues
$6,100
Program service revenue
$9,520
Net income from sales of inventory
$5,091
Other revenue
$46

Expenses

Grants and similar amounts paid
$1,500
Compensation of officers, directors and key employees
$0
Professional fees and payments to contractors
$3,962
Occupancy
$6,132
Printing, publications and postage
$562
Other expenses
$86,195
Program services (functional)
$81,048

Balance sheet and other

Total assets, start of year
$172,413
Total assets, end of year
$199,337
Total liabilities, end of year
$0
Net assets, end of year
$199,337
Cash, savings and investments
$152,607
Land and buildings
$1,444
Gross receipts
$125,275

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990-EZ for the year ended June 30, 2025, highest compensation first.

NameTitleHours / weekCompensation
PETER MCKEONFINANCE CHAIRPERSON6$0
JUSTINE HAUPTDIRECTOR-AT-LARGE5$0
FARHAN ALIDIRECTOR-AT-LARGE5$0
KEN WEAKLEYDIRECTOR-AT-LARGE5$0
JOHN LONGOLETOSDIRECTOR-AT-LARGE10$0
ANNE SPOONERPRESIDENT12$0
ALAN COUSINSVICE PRESIDENT12$0
BILL CRISPINOSECRETARY12$0
VIRGINIA CAVATREASURER12$0
990-EZ for the year ended June 30, 2024: 8 people
NameTitleHours / weekCompensation
PETER MCKEONFINANCE CHAIRPERSON6$0
JUSTINE HAUPTDIRECTOR-AT-LARGE5$0
FARHAN ALIDIRECTOR-AT-LARGE5$0
BARBARA LEBKUECHERDIRECTOR-AT-LARGE5$0
ANNE SPOONERPRESIDENT12$0
ALAN COUSINSVICE PRESIDENT12$0
BILL CRISPINOSECRETARY12$0
VIRGINIA CAVATREASURER12$0

Address and contacts

Address (IRS master file)
PO BOX 1204, SOUTHOLD, NY 11971-0934
In care of
% ROBERT VANSON PRESIDENT
Signed the 990-EZ
ANNE SPOONER, PRESIDENT
Phone
(631) 765-2626
Return prepared by
CERINI & ASSOCIATES LLP

Mission

THE PURPOSE OF THE INSTITUTE IS TO: PROVOKE INTELLECTUAL CURIOSITY, EXPLORE THE ARTS, SCIENCES AND HUMANITIES, AND STIMULATE FELLOWSHIP AMONGST ITS MEMBERS AND TO PROVIDE EDUCATIONAL AND CULTURAL OPPORTUNITIES TO THE COMMUNITY.

990-EZ for the year ended June 30, 2025

Program accomplishments

  • LECTURES, MEETINGS AND STAR GAZING SESSIONS UTILIZING OUR OBSERVATORY.
    Expenses $28,062
  • PROMOTION OF AND APPRECIATION OF THE ARTS THROUGH MUSIC CONCERTS, MATERIALS AND LECTURES.
    Expenses $52,986
  • HANDS ON COLLABORATIVE LEARNING, WITH DEMONSTRATIONS OF THE BENEFITS OF BEE HIVE MANAGEMENT AND SUSTAINABLE BEE PRACTICES.

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. 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-EZ on file
2023June 30, 2024November 15, 2024990-EZ on file

File the 2025 990-EZ for CUSTER INSTITUTE INC

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

IRS record

EIN
11-6035623
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1942
Accounting year ends
June
Files
Form 990 or 990-EZ
Assets (IRS master file)
$199,337
Income (IRS master file)
$125,275

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-EZJune 2025$125,275$98,351$199,337IRS
990-EZJune 2024$80,616$68,999$172,413IRS
990-EZJune 2023$143,594$106,571$160,796IRS
990-EZJune 2022–––IRS
990-EZJune 2021–––IRS
990-EZJune 2020–––IRS
990-EZJune 2019–––IRS
990-EZJune 2018–––IRS

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 CUSTER INSTITUTE INC

What is the EIN of CUSTER INSTITUTE INC?
The employer identification number (EIN) of CUSTER INSTITUTE INC is 11-6035623.
Is CUSTER INSTITUTE INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1942.
Are donations to CUSTER INSTITUTE INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does CUSTER INSTITUTE INC file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of CUSTER INSTITUTE INC 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 CUSTER INSTITUTE INC last file with the IRS?
The latest return in the IRS public files is the 990-EZ for the year ended June 2025.
Who are the officers and directors of CUSTER INSTITUTE INC?
The 990-EZ for the year ended June 30, 2025 lists 9 people; 0 received compensation from the organization.
How much revenue does CUSTER INSTITUTE INC have?
On its 990-EZ for the year ended June 30, 2025 it reported revenue of $125,275, expenses of $98,351 and total assets of $199,337 at year end.

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