C Stone Foundation
Only null% goes to programs Strong reserves Growing revenue
C Stone Foundation is a 501(c)(3) organization based in San Antonio, Texas, registered in 2007, with $1,959,560 in FY2024 revenue. CharityIndex grades it C.
Po Box 171068, San Antonio, TX, 78217 EIN 20-8134458 Since 2007
Revenue (FY2024)
$2.0M
▲ 19257.5% vs prior year
Philanthropy median: $168K
Expenses (FY2024)
$2.3M
Net assets
$1.6M
Employees
—
CharityIndex rating
One independent A+ to F grade from four published criteria, each scored separately from IRS filings and combined by weight.
C
—Program efficiency40% of the ratingNo expense breakdown in filings
Measures how much of every dollar spent actually reaches programs, plus what it costs to raise $100 of donations. The worse of the two measures sets the letter (85%+ to programs is an A; under $15 to raise $100 is an A), averaged over the three most recent filings. Not scored for C Stone Foundation— this filing type doesn't report it, and the rating simply skips it (never counts it against the organization). See the exact thresholds →
C+Financial health25% of the rating9 mo reserves · -16% margin
Measures whether the organization is built to last: how many months its reserves would cover expenses (3+ months earns an A-range score, but hoarding 5+ years of budget is capped) and whether it runs a surplus or a deficit. For C Stone Foundation: 9 mo reserves · -16% margin earns a C+ on this criterion. See the exact thresholds →
—Governance25% of the ratingNot reported in this filing type
Checks how the organization is run, from its own Form 990: an independent board majority, a board of five or more, conflict-of-interest, whistleblower and document-retention policies, and independently audited financials. The share of disclosed checks that pass sets the letter. Not scored for C Stone Foundation— this filing type doesn't report it, and the rating simply skips it (never counts it against the organization). See the exact thresholds →
DTransparency10% of the rating1 of 5 disclosure signals
Counts five disclosure signals: a recent filing, a mission statement, program descriptions, a listed website, and the full expense breakdown. More disclosure, better letter. For C Stone Foundation: 1 of 5 disclosure signals earns a D on this criterion. See the exact thresholds →
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Contact & location
- Address
- Po Box 171068, San Antonio, TX, 78217
- City
- San Antonio
- State
- Texas
- Subcategory
- Private Foundations
Financial trends
Revenue grew from $49K (FY2013) to $2.0M (FY2024) across 12 reported years.
Financial snapshot
Financial health & position (FY2024)
Liabilities $0Net assets $1.6M
Operating margin
-15.5%
Spent more than it raised in the latest fiscal year.
Total assets
$1.6M
Total liabilities
$0
Net assets
$1.6M
Financials by year
| Fiscal year | Revenue | Expenses | Net assets | Total assets | Form |
|---|---|---|---|---|---|
| 2024 | $1,959,560▲19258% | $2,263,837▲651% | $1,641,179▼40.5% | $1,641,179▼40.5% | 990PF |
| 2023 | $10,123▲196% | $301,260▼10.8% | $2,756,028▼9.6% | $2,756,028▼9.6% | 990PF |
| 2022 | -$10,528▼104% | $337,826▼0.8% | $3,047,165▼10.3% | $3,047,165▼10.3% | 990PF |
| 2021 | $258,065▲77.3% | $340,683▲16.0% | $3,395,519▼2.4% | $3,395,519▼2.4% | 990PF |
| 2020 | $145,547▲64.0% | $293,630▲64.7% | $3,478,120▼4.1% | $3,478,120▼4.1% | 990PF |
| 2019 | $88,742▲26.3% | $178,327▼57.9% | $3,626,093▼2.4% | $3,626,093▼2.4% | 990PF |
| 2018 | $70,242▼90.5% | $423,610▲100% | $3,715,430▼8.7% | $3,715,430▼8.7% | 990PF |
| 2017 | $737,104▲349% | $211,509▼15.6% | $4,068,528▲14.8% | $4,068,528▲14.8% | 990PF |
| 2016 | $164,271▼90.3% | $250,603▼12.5% | $3,542,507▼2.4% | $3,542,507▼2.4% | 990PF |
| 2015 | $1,685,459▲2599% | $286,406▲66.9% | $3,628,839▲62.7% | $3,628,839▲62.7% | 990PF |
| 2014 | $62,440▲26.5% | $171,588▲16.7% | $2,229,786▼4.7% | $2,229,786▼4.7% | 990PF |
| 2013 | $49,354 | $147,004▲64.4% | $2,338,934▼4.0% | $2,338,934▼4.1% | 990PF |
| 2012 | — | $89,420▲71.4% | $2,436,584▲2.0% | $2,438,584▲2.1% | 990PF |
| 2011 | — | $52,172▲20.3% | $2,387,972▲140% | $2,387,972▲140% | 990PF |
| 2010 | — | $43,360 | $993,038 | $993,038 | 990PF |
Original Form 990 PDFs (the Form column) are served by ProPublica Nonprofit Explorer, as filed with the IRS. Create a free account to download the CSV report.
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Frequently asked questions
- Is C Stone Foundation a legitimate nonprofit?
- Yes. C Stone Foundation is a 501(c)(3) organization registered with the U.S. Internal Revenue Service under EIN 20-8134458, based in San Antonio, Texas. Donations are tax-deductible.
- What is C Stone Foundation's EIN?
- C Stone Foundation's Employer Identification Number (EIN) is 20-8134458.
- How much revenue does C Stone Foundation report?
- C Stone Foundation reported $1,959,560 in total revenue on its fiscal year 2024 IRS Form 990 filing.
- What financial grade does C Stone Foundation have?
- CharityIndex grades C Stone Foundation C, based on financial health (reserves and operating margin).
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Data for C Stone Foundation (EIN 20-8134458) comes from the IRS Business Master File and e-filed Form 990 returns, via CharityIndex. Figures reflect what the organization reported to the IRS for each fiscal year.