Potoff Private Philanthrophy
Historical FunderTucson, Arizona · EIN 83-3784100 · Private foundation · Website
Half of its grants to organizations were between $177,000 and $300,000.
How to apply
The foundation filed the following application information (Form 990-PF Part XV, tax year 2025):
| Contact | WILLIAM C WESTCOTT |
|---|---|
| Address | 2030 E SPEEDWAY BLVD SUITE 208, TUCSON AZ 85719 |
| Phone | 5203191949 |
| Form and materials | NO PRESCRIBED FORM, APPLICANTS MUST FURNISH EVIDENCE OF TAX EXEMPT STATUS |
| Deadlines | N/A |
| Restrictions | N/A |
Copied as filed. Deadlines on a tax return describe the foundation's usual process; they are not confirmation of a current open cycle.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
0% of grants went outside Arizona.
Grants paid in tax year 2025
| Recipient | Location | 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 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $1,592,000 | 5 |
| 2024 | $1,195,000 | 7 |
| 2023 | $2,130,000 | 2 |
Sources
- IRS Form 990-PF, tax year 2025, filed Jan 28, 2026 - IRS e-file batch, object ID 202600289349100030
- IRS Tax Exempt Organization Search for EIN 83-3784100
- Profile updated Nov 6, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.