Foster Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in SAN DIEGO, CA. IRS filing data is available from 2020 through 2023. As of 2023, the organization holds $2.5M in total assets. In 2023, it awarded 2 grants totaling $148K. Net investment income was $20K.
Financial Overview
From 2023 IRS Form 990-PF · View filing
Total Assets
$2.5M
-3.0% YoY
Annual Giving
$148K
-32.0% YoY
Grant Count
2
-33.3% YoY
Avg Grant Size
$74K
+1.9% YoY
Under IRS private-foundation payout rules, Foster Foundation reported a distributable amount of $137K for 2023 — the minimum it must pay out in qualifying distributions.
About Foster Foundation
Based on IRS filings
Foster Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in SAN DIEGO, CA. IRS filing data is available from 2020 through 2023. As of 2023, the organization holds $2.5M in total assets. In 2023, it awarded 2 grants totaling $148K. Net investment income was $20K.
Focus Areas
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2023 | 2022 | 2021 |
|---|---|---|---|
| Total Assets | $2,524,097 | $2,603,041 | $2,563,116 |
| Revenue | $68,816 | $290,232 | $227,638 |
| Expenses | $179,778 | $268,290 | $270,195 |
| Qualifying Distributions | $147,503 | $217,068 | — |
| Net Investment Income | $20,494 | $219,841 | $187,282 |
| Distributable Amount | $137,136 | $132,950 | $132,794 |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 2 recipients in 2023
Grant Size Distribution
15 grants across all recorded years
Open Grants
1 open opportunity from Foster Foundation
Giving History
Grant recipients and amounts by year
Among its reported 2023 grants, the largest include Uck Institute for Research on Aging ($97,503), Carl I Bourhenne Medical Research ($50,000).
| Recipient | Purpose | Amount |
|---|---|---|
| CARL I BOURHENNE MEDICAL RESEARCH NEWPORT BEACH, CA | GENERAL SUPPORT | $50,000 |
| UCK INSTITUTE FOR RESEARCH ON AGING NOVATO, CA | GENERAL SUPPORT | $97,503 |
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
From 2023 IRS filing
From 2023 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| ANNA L FOSTER | CHAIRMAN | 0.5 | — |
| WINSLOW J FOSTER III | PRESIDENT | 2 | — |
| TANYA L FOSTER | DIRECTOR | 0.5 | — |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What is Foster Foundation?
Foster Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in SAN DIEGO, CA. It holds $2.5M in total assets as of 2023.
How large is Foster Foundation?
As of 2023, Foster Foundation holds $2.5M in total assets with $69K in annual revenue. It awarded 2 grants totaling $148K in 2023.
Where does Foster Foundation operate?
Foster Foundation has awarded grants in California, District of Columbia, New York, Texas.
What size grants does Foster Foundation award?
In 2023, Foster Foundation awarded 2 grants totaling $148K — an average of about $74K per grant, based on its IRS Form 990 filings.
How much is Foster Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2023, Foster Foundation reported a distributable amount of $137K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is Foster Foundation's EIN?
Foster Foundation's EIN (Employer Identification Number) is 27-3200226. IRS Form 990 filing data is available on this page for 2020–2023.
Explore Open Grants
Browse active grant opportunities in Foster Foundation's focus areas in our free grants database
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Data last updated April 2026. Sourced from IRS Form 990-PF filings.
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