Potoff Private Philanthropy
Potoff Private Philanthropy is a private foundation, based in Tucson, AZ. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $13.1M in total assets. In 2025, it awarded 5 grants totaling $1.6M. Net investment income was $613K.
Potoff Private Philanthropy at a glance
In short: Potoff Private Philanthropy gave $1.6M across 5 grants in 2025 (avg $318K), mostly in Arizona. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $1,592,000
- +33.2% vs 2024
- Grants made (2025)
- 5
- -16.7% vs 2024
- Average grant
- $318,400
- +59.9% vs 2024
- Median grant
- $200,000
- Total assets
- $13,133,420
- -8.5% vs 2024
- Primary geography
- Arizona (100% 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 Potoff Private Philanthropy funds
How this funder distributes its grants
Top Recipients
Top 5 recipients in 2025
The largest 2025 recipient was Arizona Local News Foundation ($775K). Together the top 5 received $1.6M.
Grant Size Distribution
19 grants across all recorded years
The most common grant size was in the $100–250K range: 8 grants of 19 (42%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 5 itemized grants.
States
Cities
How Potoff Private Philanthropy gives
- Giving grew 414% from 2022 to 2025. Method
- In 2025 it paid out 162% 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 2020 to 2025, annual grant giving ranged from $51K (2020) to $2.1M (2023). In 2025 it made 5 grants totaling $1.6M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Arizona Local News Foundation Phoenix, AZ | Connect Communities with Local News and Information | $775,000 |
| Handi-Dogs Inc DBA Ability Dogs of Arizona Tucson, AZ | Helping Individuals Train Their Service Dogs | $300,000 |
| Pima County Superintendent of Schools Tucson, AZ | Pima Cycle Breakers | $200,000 |
| Pima Jted Foundation Tucson, AZ | Skills-Based Education | $177,000 |
| Make Way for Books Tucson, AZ | Promote Childhood Literacy | $140,000 |
Ready to take the next step with Potoff Private Philanthropy?
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 | $13,133,420 | $832,001 | $2,024,081 | $1,592,000 | 5 | $1,791,864 | $613,393 | $1,105,664 |
| 2024 | $14,349,616 | $2,191,260 | $1,640,519 | $1,195,000 | 6 | $1,392,699 | $1,973,805 | $1,082,182 |
| 2023 | $13,774,759 | $309,451 | $2,488,218 | $2,130,000 | 2 | $2,286,602 | $236,533 | $964,352 |
| 2022 | $15,953,526 | $342,816 | $979,249 | $310,000 | 3 | $546,735 | $133,375 | $1,036,855 |
| 2021 | $16,592,926 | $16,633,989 | $416,833 | $120,000 | 3 | $322,460 | $15,913,731 | $216,199 |
| 2020 | $374,572 | $356,980 | $244,176 | $51,450 | 1 | — | — | $15,054 |
Under IRS private-foundation payout rules, Potoff Private Philanthropy reported a distributable amount of $1.1M for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Potoff Private Philanthropy is led by William C. Westcott, President & Executive Director since 2023 (on filings since 2020); 2 of 4 officers listed in 2025 are compensated.
Officers on the 2025 filing
William C. Westcott
President & Executive Director
Executive Director → President & Executive Director, 2023
On filings since 2020
12 hrs/week
$70K (2020) → $70K (2025)
Ross H. Potoff
Director
President → Director, 2023
On filings since 2020
1 hr/week
No compensation reported
Camille Shaw
Treasurer & Assistant Executive Director
Assistant Executive Director → Treasurer & Assistant Executive Director, 2023
On filings since 2022
12 hrs/week
$30K (2022) → $70K (2025)
Kathy Prather
Secretary
On filings since 2020
1 hr/week
No compensation reported
Former officers (1)
- Former: Camille Coyle (2020–2021) — Assistant Executive Director
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.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $70K, to William C Westcott (President and Executive Director). 2 officers or directors reported compensation on that filing.
Frequently asked questions about Potoff Private Philanthropy
How much does Potoff Private Philanthropy give each year?
Potoff Private Philanthropy gave $1.6M across 5 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $1.2M across 6 grants.
What is Potoff Private Philanthropy's typical grant size?
Potoff Private Philanthropy's median grant in 2025 was $200,000, and its average grant was $318,400, across 5 grants on its 2025 IRS Form 990-PF.
Where does Potoff Private Philanthropy give grants?
Potoff Private Philanthropy gives mostly in Arizona: 100% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Tucson, AZ (4 grants).
Does Potoff Private Philanthropy give general operating support?
Not in 2025: none of the 5 grants with a stated purpose on Potoff Private Philanthropy's 2025 IRS Form 990-PF were described as general or operating support.
Who are Potoff Private Philanthropy's largest grantees?
Potoff Private Philanthropy's largest 2025 grantees include Arizona Local News Foundation ($775,000), Handi-Dogs Inc DBA Ability Dogs of Arizona ($300,000) and Pima County Superintendent of Schools ($200,000), according to its 2025 IRS Form 990-PF. Together they received 80% of its itemized 2025 grant dollars.
How large is Potoff Private Philanthropy?
Potoff Private Philanthropy reported $13.1M in total assets on its 2025 IRS Form 990-PF. It paid out $1.8M in qualifying distributions that year, against a required minimum of $1.1M (roughly 5% of its investment assets).
What is Potoff Private Philanthropy's EIN?
Potoff Private Philanthropy's EIN (Employer Identification Number) is 83-3784100. 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
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS November 15, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS November 14, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS August 10, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS February 12, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS February 27, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS January 28, 2026)
- IRS filings on file for fiscal years 2020–2025
Explore Open Grants
Browse active grant opportunities in Potoff Private Philanthropy's focus areas in our free grants database
Similar Funders
Funders that support many of the same organizations
United Way of Tucson and Southern Arizona Inc
Tucson, AZ
United Way of Tucson and Southern Arizona funds nonprofits serving Pima County residents in education, financial wellness, healthy living, housing stability, and homelessness prevention. Its 2025 grants ranged from $5,000 to $1,235,856, with a median of $17,282. It solicited proposals through its FY 2025–2026 Community Impact RFP, but that application closed August 13, 2025.
Assets
$22.1M
Grants
78
Total Given
$6.8M
The Gordon Foundation
Tucson, AZ
The Gordon Foundation primarily funds Arizona organizations, supporting areas such as food sustainability, health services, youth, education, and community services; 99% of its 2026 grant dollars went to Arizona. Its 22 grants ranged from $500 to $25,000, with a median of $2,000. It supports only preselected charities and does not accept unsolicited requests.
Assets
$1.5M
Grants
22
Total Given
$75K
Donald Pitt Family Foundation
Tucson, AZ
The Donald Pitt Family Foundation supports organizations working in literacy, conservation, food assistance, education, and the arts, with most funding going to Arizona. Its 2025 grants ranged from $328 to $13,000, with a median of $1,000. A 2023 filing says it does not restrict giving to preselected organizations, requires no special application form, and lists no deadline.
Assets
$1.5M
Grants
23
Total Given
$58K
The HS Lopez Family Foundation
Tucson, AZ
The H.S. Lopez Family Foundation funds nonprofit projects in education, health, and welfare that improve quality of life, primarily in Southern Arizona or areas where a board member lives. In 2025, grants ranged from $1,000 to $150,000, with a median of $10,000. It accepts online applications from eligible 501(c)(3) organizations; the profile does not state whether unsolicited requests are accepted.
Assets
$22.4M
Grants
86
Total Given
$1.8M
Community Foundation for Southern Arizona
Tucson, AZ
The Community Foundation for Southern Arizona funds nonprofits through competitive grants and donor-advised funds, supporting general operations, grassroots groups, scholarships, and community initiatives. Its 2025 grants ranged from $5,300 to $1,062,929, with a median of $20,000, and it primarily serves a seven-county Southern Arizona region. It accepts applications for competitive grant opportunities, including CORE Grants; donor-advised grants are recommended by donors.
Assets
$219.5M
Grants
346
Total Given
$11.8M
Fred & Christine Armstrong Foundation
Tucson, AZ
The Fred & Christine Armstrong Foundation funds services for seniors, food assistance, housing and homelessness, children and youth, health research, and the arts, with most giving in Arizona and some in Texas. Its 2025 grants ranged from $3,500 to $25,000, with a median of $10,000. It accepts requests by contacting Karen K Frey; applications are due March 1 each year.
Assets
$4.4M
Grants
43
Total Given
$452K
More similar funders
More Funders in Arizona
The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open
Figures come from Potoff Private Philanthropy's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
Potoff Private Philanthropy down — hundreds of funders to go?