Donald E Mcmahon Foundation is a 501(c)(3) organization based in Houston, Texas, registered in 1980, with $629,288 in FY2025 revenue. CharityIndex grades it C+.
Revenue (FY2025)
$629K
▲ 2295.7% vs prior year
Expenses (FY2025)
$124K
Net assets
$1.1M
Employees
—
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 Donald E Mcmahon Foundation— this filing type doesn't report it, and the rating simply skips it (never counts it against the organization). See the exact thresholds →
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 Donald E Mcmahon Foundation: 104 mo reserves · +80% margin earns a B+ on this criterion. See the exact thresholds →
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 Donald E Mcmahon Foundation— this filing type doesn't report it, and the rating simply skips it (never counts it against the organization). See the exact thresholds →
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 Donald E Mcmahon Foundation: 1 of 5 disclosure signals earns a D on this criterion. See the exact thresholds →
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Revenue grew from $86K (FY2013) to $629K (FY2025) across 12 reported years.
Financial snapshot
Operating margin
80.3%
Revenue exceeded expenses in the latest fiscal year.
Total assets
$1.1M
Total liabilities
$23K
Net assets
$1.1M
| Fiscal year | Revenue | Expenses | Net assets | Total assets | Form |
|---|---|---|---|---|---|
| 2025 | $629,288▲2296% | $124,148▲38.2% | $1,075,635▲88.5% | $1,098,784▲83.4% | 990 |
| 2024 | $26,267▲321% | $89,849▲8.3% | $570,495▼13.9% | $599,001▼12.1% | 990 |
| 2023 | -$11,887▼116% | $82,987▼10.5% | $662,869▼12.5% | $681,789▼10.0% | 990 |
| 2022 | $76,141▲35.3% | $92,683▲10.6% | $757,743▼2.1% | $757,743▼2.1% | 990 |
| 2021 | $56,268▲287% | $83,763▲100% | $774,285▼3.4% | $774,285▼3.4% | 990 |
| 2020 | $14,527▼70.7% | $41,843▼63.7% | $801,780▼3.3% | $801,780▼3.3% | 990 |
| 2019 | $49,546▲53.5% | $115,251▼37.7% | $829,096▼7.3% | $829,096▼7.3% | 990 |
| 2018 | $32,282▲127% | $185,095▲99.4% | $894,801▼14.6% | $894,801▼14.6% | 990 |
| 2017 | -$119,796▼268% | $92,828▲272% | $1,047,614▼16.9% | $1,047,614▼16.9% | 990 |
| 2016 | $71,232▲12.4% | $24,970▼35.6% | $1,260,238▲3.9% | $1,260,238▲3.9% | 990 |
| 2014 | $63,346▼26.3% | $38,778▼21.2% | $1,212,852▲2.1% | $1,212,852▲2.1% | 990 |
| 2013 | $85,894 | $49,206▲4.1% | $1,188,284▲3.2% | $1,188,284▲3.2% | 990 |
| 2012 | — | $47,261 | $1,151,596 | $1,151,596 | 990 |
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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Data for Donald E Mcmahon Foundation (EIN 74-2077762) 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.