Three Guineas Fund
Three Guineas Fund is a private foundation, based in San Francisco, CA. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $482K in total assets. In 2025, it made $14K in qualifying distributions.
Three Guineas Fund at a glance
- Total assets
- $481,692
- -2.7% vs 2024
- Revenue (2025)
- $41
- -99.0% vs 2024
- Qualifying distributions (2025)
- $13,688
- -33.0% vs 2024
- Expenses (2025)
- $15,706
- -40.4% vs 2024
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Three Guineas Fund funds
How this funder distributes its grants
Grant Size Distribution
8 grants across all recorded years
The most common grant size was under $50K: 6 grants of 8 (75%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Cities
How Three Guineas Fund gives
- In 2025 it paid out 88% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2022, annual grant giving ranged from $110K (2020) to $1.5M (2021). In 2022 it made 1 grant totaling $1.1M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Tides Foundation San Francisco, CA | Three Guineas Fund DAF | $1,115,626 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $481,692 | $41 | $15,706 | — | — | $13,688 | — | $15,515 |
| 2024 | $495,077 | $3,928 | $26,356 | — | — | $20,444 | — | $16,380 |
| 2023 | $517,505 | $5,683 | $14,903 | — | — | $13,253 | $2,207 | $35,352 |
| 2022 | $526,725 | $4,656 | $1,124,537 | $1,115,626 | 1 | $1,123,037 | $3,156 | $117,648 |
| 2021 | $1,641,192 | $47,430 | $1,576,653 | $1,489,299 | 7 | $1,564,716 | $35,493 | $136,345 |
| 2020 | $2,758,174 | $-85,168 | $382,734 | $110,000 | 6 | — | — | $125,458 |
Under IRS private-foundation payout rules, Three Guineas Fund reported a distributable amount of $16K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Three Guineas Fund is led by Catherine S Muther, Founder & President on every filing since 2020; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Catherine S Muther
Founder & President
On filings since 2020
1 hr/week
No compensation reported
Margaret Leahy
Director
On filings since 2020
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about Three Guineas Fund
How large is Three Guineas Fund?
Three Guineas Fund reported $482K in total assets on its 2025 IRS Form 990-PF. It paid out $14K in qualifying distributions that year, against a required minimum of $16K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
Where does Three Guineas Fund operate?
Three Guineas Fund has awarded grants in California, District of Columbia, Massachusetts, New York.
What is Three Guineas Fund's EIN?
Three Guineas Fund's EIN (Employer Identification Number) is 94-3215954. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS November 6, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS September 29, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS October 31, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS April 29, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 13, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 5, 2026)
Live grants for the work Three Guineas Fund funds
Philanthropy, Voluntarism & Grantmaking Open opportunities, soonest deadline first.
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Browse active grant opportunities in Three Guineas Fund's focus areas in our free grants database
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