Thomas & Margaret Tan Family Foundation
Thomas & Margaret Tan Family Foundation is a private foundation, based in Hamilton, NY. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $734K in total assets. In 2025, it awarded 9 grants totaling $47K. Net investment income was $32K.
Key facts about Thomas & Margaret Tan Family Foundation
In short: Thomas & Margaret Tan Family Foundation gave $47K across 9 grants in 2025 (avg $5K), mostly in California. Source: 2025 IRS Form 990-PF.
- EIN
- 94-3381136
- Latest 990 filing
- Form 990-PF, 2025
- Annual giving (2025)
- $47,200
- Grants made (2025)
- 9
- Average grant
- $5,244
- Median grant
- $2,000
- Total assets
- $734,035
- Primary geography
- California (64% of itemized 2025 grant dollars)
Data from IRS Form 990-PF, 2025; updated September 2026.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
$734K
+4.2% YoY
Annual Giving
$47K
+19.9% YoY
Grant Count
9
+28.6% YoY
Avg Grant Size
$5K
-6.8% YoY
Under IRS private-foundation payout rules, Thomas & Margaret Tan Family Foundation reported a distributable amount of $54K for 2025 — the minimum it must pay out in qualifying distributions.
How Thomas & Margaret Tan Family Foundation gives
- Giving held roughly steady from 2022 to 2025 (+5%). Method
- In 2025 it paid out 93% 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.
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 9 itemized grants.
Cities
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $33K (2020) to $47K (2025). In 2025 it made 9 grants totaling $47K.
Grant Insights
How this funder distributes its grants
Top Recipients
Top 9 recipients in 2025
The largest 2025 recipient was Stanford University ($20K). Together the top 9 received $47K.
Grant Size Distribution
41 grants across all recorded years
The most common grant size was under $50K: 41 grants of 41 (100%).
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Stanford University Stanford CA, CA | Unrestricted Grant for Education Purposes. | $20,000 |
| Colgate University Hamilton, NY | Unrestricted Grant for Education Purposes. | $13,000 |
| UCSF Carol Frank Buck Breast Care C San Francisco, CA | Unrestricted grant related to breast cancer | $5,000 |
| Bellarmine College Preparatory San Jose, CA | Unrestricted Grant for Education Purposes. | $3,000 |
| Tuesday's Children Manhasset, NY | Unrestricted grant for education purpose | $2,000 |
| St Baldrick's Foundation Monrovia, CA | Unrestricted Grant for Education Purposes. | $1,200 |
| Addiction Ed Society San Mateo, CA | Unrestricted grant for providing a life-time of healing for families who have been forever changed by trauma and loss. | $1,000 |
| Low Country Land Trust Charleston, SC | Unrestricted Grant for General Public Purposes. | $1,000 |
| Our Lady of Mercy Community Outreac John Island, SC | Unrestricted Grant for General Public Purposes. | $1,000 |
Financial History
Multi-year comparison from IRS filings
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $734,035 | $704,647 | $663,999 |
| Revenue | $86,781 | $76,746 | $37,826 |
| Expenses | $57,393 | $48,675 | $50,299 |
| Qualifying Distributions | $49,825 | $39,403 | $41,670 |
| Net Investment Income | $31,529 | $19,790 | $7,086 |
| Distributable Amount | $53,529 | $47,347 | $41,123 |
Data update history
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 12, 2026)
- IRS filings on file for fiscal years 2020–2024
Leadership & Key People
Officers and directors from IRS filings
Thomas & Margaret Tan Family Foundation is led by Ernest P. Tan, President on every filing since 2020; none of the 3 officers listed in 2025 report compensation.
Officers on the 2025 filing
Ernest P. Tan
President
On filings since 2020
No compensation reported
Cathy Ling
Secretary
On filings since 2020
No compensation reported
Christina L. Tan
CFO
On filings since 2020
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 Thomas & Margaret Tan Family Foundation
How much does Thomas & Margaret Tan Family Foundation give each year?
Thomas & Margaret Tan Family Foundation gave $47K across 9 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $39K across 7 grants.
What is Thomas & Margaret Tan Family Foundation's typical grant size?
Thomas & Margaret Tan Family Foundation's median grant in 2025 was $2,000, and its average grant was $5,244, across 9 grants on its 2025 IRS Form 990-PF.
Where does Thomas & Margaret Tan Family Foundation give grants?
Thomas & Margaret Tan Family Foundation gives mostly in California: 64% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was New York (32%).
Does Thomas & Margaret Tan Family Foundation give general operating support?
Yes: 100% of Thomas & Margaret Tan Family Foundation's 2025 grants with a stated purpose (9 of 9) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Thomas & Margaret Tan Family Foundation's largest grantees?
Thomas & Margaret Tan Family Foundation's largest 2025 grantees include Stanford University ($20,000), Colgate University ($13,000) and UCSF Carol Frank Buck Breast Care C ($5,000), according to its 2025 IRS Form 990-PF. Together they received 81% of its itemized 2025 grant dollars.
How large is Thomas & Margaret Tan Family Foundation?
Thomas & Margaret Tan Family Foundation reported $734K in total assets on its 2025 IRS Form 990-PF. It paid out $50K in qualifying distributions that year, against a required minimum of $54K (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.
What is Thomas & Margaret Tan Family Foundation's EIN?
Thomas & Margaret Tan Family Foundation's EIN (Employer Identification Number) is 94-3381136. 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.
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