The New York State Capitol

Form 990-PFTax year 2025EIN 04-3595876

Irwin Weiner Charitable Foundation Inc

A private foundation in White Plains, NY. Its return for tax year 2025 lists 17 grants and $50,000 paid in grants.

Tax year 2025 (period ending Dec 31, 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

8 returns on file
Grants paid by tax year. The latest year is in blue.
  • Tax year 2025

    $50,000

    Grants listed
    17
    Assets, end of year
    $272,702
  • Tax year 2024

    $41,500

    Grants listed
    15
    Assets, end of year
    $265,946
  • Tax year 2023

    $42,650

    Grants listed
    16
    Assets, end of year
    $286,633
  • Tax year 2022

    $44,650

    Grants listed
    14
    Assets, end of year
    $333,862
  • Tax year 2021

    $43,600

    Grants listed
    15
    Assets, end of year
    $295,967
  • Tax year 2020

    $40,600

    Grants listed
    17
    Assets, end of year
    $295,446
  • Tax year 2019

    $46,100

    Grants listed
    17
    Assets, end of year
    $286,156
  • Tax year 2018

    $44,600

    Grants listed
    17
    Assets, end of year
    $312,204

Grants paid in 2025

17 grants, largest first

As listed on the return.

  1. Holocaust and Human Rights Education CtrPurchase, NY

    General support

    $15,000
  2. City Lax IncNew York, NY

    General support

    $4,500
  3. Hamilton College-Men's Lacrosse TeamClinton, NY

    General support

    $4,000
  4. Muhlenberg Women's LacrosseAllentown, PA

    General support

    $4,000
  5. Bedford Free LibraryBedford, MA

    General purpose

    $3,000
  6. Veterans Community ProjectKansas City, MO

    General support

    $3,000
  7. Lee Pesky Learning CenterBoise, ID

    General support

    $3,000
  8. Brooklyn Law SchoolBrooklyn, NY

    General support

    $2,000
  9. Congregation B'nai YisraelArmonk, NY

    General support

    $2,000
  10. Israel Lacrosse AssociationNew York, NY

    General support

    $2,000
  11. Syracuse UniversitySyracuse, NY

    General support

    $1,500
  12. American Friends of Magen DavidNew York, NY

    General support

    $1,000
  13. Blythedale Children's HospitalValhalla, NY

    General support

    $1,000
  14. Calvary HospitalBronx, NY

    General support

    $1,000
  15. Columbia Men's TennisNew York, NY

    General support

    $1,000
  16. Friends of the Israel Defense ForcesSaddle Brook, NJ

    General support

    $1,000
  17. North East Westchester Special Recreation IncHawthorne, NY

    General support

    $1,000

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Education3 grants $6,50034% of the total
  2. Sports and recreation2 grants $6,50034% of the total
  3. Veterans and military1 grant $3,00016% of the total
  4. Health2 grants $2,00011% of the total
  5. Human services1 grant $1,0005% of the total

By State

Grants to organizations with a US address, latest year.

  1. New York12 grants $36,000
  2. Pennsylvania1 grant $4,000
  3. Idaho1 grant $3,000
  4. Massachusetts1 grant $3,000
  5. Missouri1 grant $3,000
  6. New Jersey1 grant $1,000

Officers, directors and trustees

6 people as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Michael MarkhoffVICE PRESIDENT Hours 1Pay $0
  • Nancy Allen MarkhoffSECRETARY Hours 1Pay $0
  • Harris MarkhoffPRES & TREAS Hours 1Pay $0
  • Adam MarkoffDIRECTOR Hours 1Pay $0
  • Abigail MarkhoffDIRECTOR Hours 1Pay $0
  • Molly MarkhoffDIRECTOR Hours 1Pay $0

The return

More foundations

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Same main cause (education), giving between a quarter and four times this foundation’s where possible, nearby first.

  1. James P & Ruth C Gillroy Foundation IncWhite Plains, NY 1 grant Preselected only $85,250 giving
  2. The Anthony A Sirna Foundation IncWhite Plains, NY 19 grants Accepts applications $101,000 giving
  3. The Roskind Family Foundation IncWhite Plains, NY 14 grants Preselected only $114,407 giving
  4. The Wiener Family FoundationHarrison, NY 1 grant Preselected only $50,000 giving
  5. The Joel Shapiro and Ellen Phelan Foundation IncNew York, NY 3 grants Preselected only $50,000 giving