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Form 990-PFTax year 2025EIN 23-2339056

William Bass Charitable Foundation

A private foundation in Philadelphia, PA. Its return for tax year 2025 lists 9 grants and $14,891 paid in grants.

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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

    $14,891

    Grants listed
    9
    Assets, end of year
    $236,716

  • Tax year 2024

    $14,360

    Grants listed
    8
    Assets, end of year
    $247,665

  • Tax year 2023

    $17,137

    Grants listed
    12
    Assets, end of year
    $244,050

  • Tax year 2022

    $12,150

    Grants listed
    8
    Assets, end of year
    $249,994

  • Tax year 2021

    $9,780

    Grants listed
    7
    Assets, end of year
    $264,183

  • Tax year 2020

    $6,905

    Grants listed
    8
    Assets, end of year
    $238,898

  • Tax year 2019

    $11,475

    Grants listed
    11
    Assets, end of year
    $242,436

  • Tax year 2018

    $16,005

    Grants listed
    13
    Assets, end of year
    $273,928

Grants paid in 2025

9 grants, largest first

As listed on the return.

  1. The Barnes FoundationPhiladelphia, PA

    Charitable

    $4,300
  2. Congregation Rodeph ShalomPhiladelphia, PA

    Charitable

    $2,635
  3. Delaware Valley Friends SchoolPaoli, PA

    Charitable

    $2,476
  4. Tufts UniversityBoston, MA

    Charitable

    $2,000
  5. University of Pennsylvania Carey Law SchoolPhiladelphia, PA

    Charitable

    $1,250
  6. Thomas Jefferson UniversityPhiladelphia, PA

    Charitable

    $1,000
  7. The Rosenbach Museum & LibraryPhiladelphia, PA

    Charitable

    $550
  8. Pocono Heritage Land TrustE Stroudsburg, PA

    Charitable

    $500
  9. The Weitzman National Museum of American Jewish HistoryPhiladelphia, PA

    Charitable

    $180

Where the money goes

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

  1. Arts and culture3 grants $5,03077% of the total
  2. Education1 grant $1,00015% of the total
  3. Environment1 grant $5008% of the total

By State

Grants to organizations with a US address, latest year.

  1. Pennsylvania8 grants $12,891
  2. Massachusetts1 grant $2,000

Officers, directors and trustees

3 people as filed

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

  • Robert BassPRESIDENT Hours 2Pay $0
  • Jonathan BassMANAGER Hours 2.5Pay $3,750
  • Diane BassMANAGER Hours 0Pay $0

The return

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