Is it real?
Yes. Never revoked by the IRS. Latest filing on record: FY2025. IRS ruling in Oct 1984.
IRS Pub. 78 · IRS Auto-Revocation List · IRS Business Master File
Where the money goes
What each dollar paid for.
Form 990 Part IX, line 25, columns B–D. Every line is in By the numbers.
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Who runs it and what they're paid
7 people listed on the 990-PF; $319K paid to officers and key staff.
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Programs and updates
A private foundation based in Petaluma, CA.
Questions for C S Fund
Your first name shows with your question. C S Fund answers here, for everyone.
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Grants and how to apply
Who it funds, and how to ask.
Who They Fund
Grantmaking Profile
By the numbers
The FY2025 990-PF, line by line.
Download 990
Filing history
| Year | Money in | Money out | In minus out | Net assets | Download |
|---|---|---|---|---|---|
| FY2025 Latest Viewing | $8.2M | $10.3M | −$2.1M | $1.2M | 990 PDF |
| FY2024 | $7.2M | $8.1M | −$913K | $4.1M | 990 PDF |
| FY2023 | $5.3M | $6.4M | −$1.1M | $4.4M | 990 PDF |
| FY2022 | $5.2M | $5.0M | $262K | $5.2M | 990 PDF |
| FY2021 | $2.3M | $2.6M | −$316K | $7.7M | 990 PDF |
| FY2020 | $3.1M | $2.5M | $564K | $6.5M | 990 PDF |
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Schedules filed Part IV
Form 990 e-file (XML) FY2025 from the IRS · Classification, formation year and address from the IRS Business Master File
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Names, privacy, and removal requests More
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