Barbara and Tom Witter Foundation
Barbara and Tom Witter Foundation is a private foundation, based in San Francisco, CA. IRS filing data is available from 2021 through 2025. As of 2025, the organization holds $79K in total assets. In 2025, it awarded 4 grants totaling $48K. Net investment income was $74K.
Barbara and Tom Witter Foundation at a glance
In short: Barbara and Tom Witter Foundation gave $48K across 4 grants in 2025 (avg $12K), mostly in Nevada. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $48,480
- +241.4% vs 2024
- Grants made (2025)
- 4
- +100.0% vs 2024
- Average grant
- $12,120
- +70.7% vs 2024
- Median grant
- $11,250
- Total assets
- $78,748
- +33.3% vs 2024
- Primary geography
- Nevada (72% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Barbara and Tom Witter Foundation funds
How this funder distributes its grants
Top Recipients
Top 4 recipients in 2025
The largest 2025 recipient was University of Nevada Reno Foun ($25K). Together the top 4 received $48K.
Grant Size Distribution
15 grants across all recorded years
The most common grant size was under $50K: 14 grants of 15 (93%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 4 itemized grants.
States
Cities
How Barbara and Tom Witter Foundation gives
- Giving held roughly steady from 2022 to 2025 (+2%). Method
- In 2025 it paid out 358% of its IRS minimum distribution (the 5% rule). 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 2021 to 2025, annual grant giving ranged from $14K (2024) to $181K (2023). In 2025 it made 4 grants totaling $48K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| University of Nevada Reno Foun Reno NV, NV | General | $24,980 |
| Iota Foundation Berkeley, CA | General | $12,500 |
| Thunderbird Lodge Preservation Soci Incline Village, NV | General | $10,000 |
| Tahoe Lakefront Owners' Association Tahoe City, CA | General | $1,000 |
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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 | $78,748 | $74,073 | $51,393 | $48,480 | 4 | $50,980 | $73,973 | $14,229 |
| 2024 | $59,067 | $22,620 | $18,900 | $14,200 | 2 | $16,620 | $22,495 | $12,689 |
| 2023 | $56,097 | $154,686 | $184,198 | $180,636 | 4 | $183,029 | $154,573 | $18,416 |
| 2022 | $93,060 | $72,933 | $50,290 | $47,500 | 2 | $49,729 | $72,846 | $23,324 |
| 2021 | $71,533 | $34,172 | $40,885 | $38,148 | 3 | — | $34,080 | $18,811 |
Under IRS private-foundation payout rules, Barbara and Tom Witter Foundation reported a distributable amount of $14K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Barbara and Tom Witter Foundation is led by Thomas K Witter Trustee, Trustee on every filing since 2021 — the only officer listed, and uncompensated.
Officers on the 2025 filing
Thomas K Witter Trustee
Trustee
On filings since 2021
No compensation reported
Data from IRS Form 990 filings, 2021–2025. "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 Barbara and Tom Witter Foundation
How much does Barbara and Tom Witter Foundation give each year?
Barbara and Tom Witter Foundation gave $48K across 4 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $14K across 2 grants.
What is Barbara and Tom Witter Foundation's typical grant size?
Barbara and Tom Witter Foundation's median grant in 2025 was $11,250, and its average grant was $12,120, across 4 grants on its 2025 IRS Form 990-PF.
Where does Barbara and Tom Witter Foundation give grants?
Barbara and Tom Witter Foundation gives mostly in Nevada: 72% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was California (28%).
Does Barbara and Tom Witter Foundation give general operating support?
Yes: 100% of Barbara and Tom Witter Foundation's 2025 grants with a stated purpose (4 of 4) were for general or operating support, per its 2025 IRS Form 990-PF.
How large is Barbara and Tom Witter Foundation?
Barbara and Tom Witter Foundation reported $79K in total assets on its 2025 IRS Form 990-PF. It paid out $51K in qualifying distributions that year, against a required minimum of $14K (roughly 5% of its investment assets).
What is Barbara and Tom Witter Foundation's EIN?
Barbara and Tom Witter Foundation's EIN (Employer Identification Number) is 94-3026662. IRS Form 990 filing data is available on this page for 2021–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2021–2025
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