Riordan Eve D Tau
Only null% goes to programs Strong reserves Declining revenue
Riordan Eve D Tau is a 501(c)(3) organization based in Saint Louis, Missouri, registered in 2015, with $97,537 in FY2024 revenue. CharityIndex grades it C+.
Po Box 505, Saint Louis, MO, 63166 EIN 43-6938444 Since 2015
Revenue (FY2024)
$98K
▲ 75.8% vs prior year
Philanthropy median: $168K
Expenses (FY2024)
$83K
Net assets
$992K
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 Riordan Eve D Tau— this filing type doesn't report it, and the rating simply skips it (never counts it against the organization). See the exact thresholds →
B+Financial health25% of the rating144 mo reserves · +15% 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 Riordan Eve D Tau: 144 mo reserves · +15% margin earns a B+ 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 Riordan Eve D Tau— 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 Riordan Eve D Tau: 1 of 5 disclosure signals earns a D on this criterion. See the exact thresholds →
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A live seal — it updates automatically when the grade changes and links donors to this verified profile.
Contact & location
- Address
- Po Box 505, Saint Louis, MO, 63166
- City
- Saint Louis
- State
- Missouri
- Subcategory
- Private Foundations
Financial trends
Revenue grew from $93K (FY2018) to $98K (FY2024) across 7 reported years.
Financial snapshot
Financial health & position (FY2024)
Liabilities $0Net assets $992K
Operating margin
15.3%
Revenue exceeded expenses in the latest fiscal year.
Total assets
$992K
Total liabilities
$0
Net assets
$992K
Financials by year
| Fiscal year | Revenue | Expenses | Net assets | Total assets | Form |
|---|---|---|---|---|---|
| 2024 | $97,537▲75.8% | $82,581 | $992,273▲1.6% | $992,273▲1.6% | 990PF |
| 2023 | $55,497▲90.5% | $82,582▼11.2% | $977,051▼2.8% | $977,051▼2.8% | 990PF |
| 2022 | $29,132▼81.5% | $92,993▲19.6% | $1,004,688▼5.9% | $1,004,688▼5.9% | 990PF |
| 2021 | $157,394▲183% | $77,736▲6.4% | $1,068,245▲8.0% | $1,068,245▲8.0% | 990PF |
| 2020 | $55,616▼13.4% | $73,094▼3.4% | $988,680▼1.8% | $988,680▼1.8% | 990PF |
| 2019 | $64,198▼30.9% | $75,651▲1.7% | $1,006,451▼1.2% | $1,006,451▼1.2% | 990PF |
| 2018 | $92,964 | $74,368 | $1,018,202 | $1,018,202 | 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 Riordan Eve D Tau a legitimate nonprofit?
- Yes. Riordan Eve D Tau is a 501(c)(3) organization registered with the U.S. Internal Revenue Service under EIN 43-6938444, based in Saint Louis, Missouri. Donations are tax-deductible.
- What is Riordan Eve D Tau's EIN?
- Riordan Eve D Tau's Employer Identification Number (EIN) is 43-6938444.
- How much revenue does Riordan Eve D Tau report?
- Riordan Eve D Tau reported $97,537 in total revenue on its fiscal year 2024 IRS Form 990 filing.
- What financial grade does Riordan Eve D Tau have?
- CharityIndex grades Riordan Eve D Tau C+, based on financial health (reserves and operating margin).
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Data for Riordan Eve D Tau (EIN 43-6938444) 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.