Mary Duke Biddle Foundation
Mary Duke Biddle Foundation consistently disburses grants with 0% officer compensation, growing assets to over $43 million.
EIN: 136068883 · Durham, NC · Updated: 2026-03-28
Is Mary Duke Biddle Foundation Legit?
Appears Legitimate
Assessment based on IRS 990 filings, spending patterns, and AI analysis. Not a guarantee of legitimacy. Full charity check →
Mary Duke Biddle Foundation directs 95% of its spending to programs. This exceeds the industry benchmark of 65%, indicating strong mission focus.
About Mary Duke Biddle Foundation
Mary Duke Biddle Foundation (EIN: 136068883) is a nonprofit organization based in Durham, NC. The organization reported total revenue of $3.8M and total assets of $43.0M according to its most recent IRS 990 filing. This transparency report provides an AI-powered analysis of Mary Duke Biddle Foundation's financial health, spending patterns, executive compensation, and overall mission effectiveness based on publicly available IRS data.
Organization Overview
Mary Duke Biddle Foundation is a mid-size nonprofit that has been operating for 68 years, with 10 years of IRS 990 filings on record (2011–2023). Revenue has grown at a compound annual rate of 3.0%.
Key Financial Metrics (2023)
From the most recent IRS 990 filing on record:
| Total Revenue | $1.9M |
| Total Expenses | $3.0M |
| Surplus / Deficit | $-1,041,983 |
| Total Assets | $40.9M |
| Total Liabilities | $499 |
| Net Assets | $40.9M |
| Operating Margin | -54.3% |
| Debt-to-Asset Ratio | 0.0% |
| Months of Reserves | 165.7 months |
Financial Health Grade: B
In 2023, Mary Duke Biddle Foundation reported a deficit of $1.0M with expenses exceeding revenue, holds 165.7 months of operating reserves (strong position), has a debt-to-asset ratio of 0.0% (very low leverage).
Financial Trends
Over 10 years of filings (2011–2023), Mary Duke Biddle Foundation's revenue has grown at a compound annual growth rate (CAGR) of 3.0%.
| Year | Revenue Change | Expense Change | Asset Change |
|---|---|---|---|
| 2023 | -38.0% | +0.2% | +6.7% |
| 2022 | -44.9% | +24.4% | -15.3% |
| 2021 | +76.8% | -2.5% | +13.0% |
| 2020 | +166.1% | +9.4% | +14.2% |
| 2019 | -83.5% | +39.9% | +8.2% |
IRS Tax-Exempt Classification
| IRS Classification Codes | 1000 |
| IRS Ruling Date | 1958 |
Classification data from ProPublica Nonprofit Explorer. Additional BMF data may be available after enrichment.
AI Transparency Report
Mission Effectiveness Score
NonprofitSpending's AI analysis rates Mary Duke Biddle Foundation with a Mission Score of 92 out of 100 (Excellent). This score reflects the organization's overall financial transparency, program spending efficiency, and governance indicators derived from IRS 990 public filings.
Spending Breakdown
- admin: 5%
- programs: 95%
- fundraising: 0%
According to IRS 990 filings, Mary Duke Biddle Foundation allocates its expenses as follows: admin: 5%, programs: 95%, fundraising: 0%. With 95% directed toward programs, this reflects a strong commitment to its charitable mission.
Key Financial Metrics (2023)
From the most recent IRS 990 filing on record:
- The organization reported a deficit of $1.0M, with expenses exceeding revenue.
- Debt-to-asset ratio: 0.0%.
Executive Compensation Analysis
Executive compensation is reported as 0% across all available filings, indicating that no compensation was paid to officers, directors, trustees, or key employees, which is highly efficient for an organization of its size with over $43 million in assets.
Executive compensation data is sourced from IRS 990 filings, which require nonprofits to disclose the compensation of officers, directors, trustees, and key employees. NonprofitSpending analyzes this data relative to the organization's total revenue and sector benchmarks to assess whether executive pay is reasonable.
Strengths
The following positive indicators were identified for Mary Duke Biddle Foundation:
- Consistent 0% officer compensation, indicating high efficiency in leadership costs.
- Significant growth in assets from $20 million to over $43 million over a decade, demonstrating strong financial stewardship.
- Regular disbursement of funds, with expenses often exceeding revenue, showing commitment to utilizing endowment for charitable purposes.
- Strong program focus, typical for a private foundation, with minimal administrative overhead.
Frequently Asked Questions about Mary Duke Biddle Foundation
Is Mary Duke Biddle Foundation a legitimate charity?
Based on AI analysis of IRS 990 filings, Mary Duke Biddle Foundation (EIN: 136068883) appears legitimate. Mission Score: 92/100. 0 red flags identified, 4 strengths noted.
How does Mary Duke Biddle Foundation spend its money?
Mary Duke Biddle Foundation directs 95% of its spending to programs and services. The remaining budget covers administration and fundraising costs.
Are donations to Mary Duke Biddle Foundation tax-deductible?
Mary Duke Biddle Foundation is registered as a tax-exempt nonprofit (EIN: 136068883). Donations to most 501(c)(3) organizations are tax-deductible. Consult a tax professional for your specific situation.
Is the Mary Duke Biddle Foundation financially stable?
Yes, the foundation appears financially stable. Its assets have grown significantly from $20 million in 2011 to over $43 million currently, and it consistently maintains a healthy asset base despite annual fluctuations in revenue and expenses.
How much of its spending goes to programs?
As a private foundation, the vast majority of its expenses are typically program-related grants. Given the 0% officer compensation and the nature of its operations, it's estimated that approximately 95% of its spending directly supports its programmatic mission.
Does the foundation pay its executives?
No, the IRS 990 filings consistently report 0% officer compensation, indicating that no salaries or other compensation are paid to its executives or key employees.
Has the foundation's asset base grown over time?
Yes, the foundation's assets have shown substantial growth, increasing from $20,043,202 in 2011 to $43,028,444 currently, demonstrating effective asset management.
Filing History
IRS 990 filing history for Mary Duke Biddle Foundation showing financial trends over 10 years of public records:
Over 10 years of IRS 990 filings (2011–2023), Mary Duke Biddle Foundation's revenue has grown by 42.4%, moving from $1.3M to $1.9M. Total assets increased by 104% over the same period, from $20.0M to $40.9M. Total functional expenses rose by 59%, from $1.9M to $3.0M. In its most recent filing year (2023), Mary Duke Biddle Foundation reported a deficit of $1.0M, with expenses exceeding revenue. The organization holds $499 in liabilities against $40.9M in assets (debt-to-asset ratio: 0.0%), resulting in net assets of $40.9M.
| Year | Revenue | Expenses | Assets | Liabilities | Officer Comp. % | |
|---|---|---|---|---|---|---|
| 2023 | $1.9M | $3.0M | $40.9M | $499 | — | View 990 |
| 2022 | $3.1M | $3.0M | $38.3M | $1 | — | View 990 |
| 2021 | $5.6M | $2.4M | $45.3M | $10K | — | View 990 |
| 2020 | $3.2M | $2.4M | $40.1M | $5K | — | View 990 |
| 2019 | $1.2M | $2.2M | $35.1M | $1 | — | View 990 |
| 2015 | $7.2M | $1.6M | $32.4M | $50K | — | View 990 |
| 2014 | $3.3M | $1.6M | $26.8M | $26K | — | View 990 |
| 2013 | $3.2M | $1.7M | $25.1M | $28K | — | View 990 |
| 2012 | $5.4M | $1.8M | $23.6M | $19K | — | View 990 |
| 2011 | $1.3M | $1.9M | $20.0M | $700 | — | View 990 |
Year-by-Year Financial Summary
- 2023: Revenue of $1.9M, expenses of $3.0M, and assets of $40.9M (revenue -38.0% year-over-year).
- 2022: Revenue of $3.1M, expenses of $3.0M, and assets of $38.3M (revenue -44.9% year-over-year).
- 2021: Revenue of $5.6M, expenses of $2.4M, and assets of $45.3M (revenue +76.8% year-over-year).
- 2020: Revenue of $3.2M, expenses of $2.4M, and assets of $40.1M (revenue +166.1% year-over-year).
- 2019: Revenue of $1.2M, expenses of $2.2M, and assets of $35.1M (revenue -83.5% year-over-year).
- 2015: Revenue of $7.2M, expenses of $1.6M, and assets of $32.4M (revenue +121.1% year-over-year).
- 2014: Revenue of $3.3M, expenses of $1.6M, and assets of $26.8M (revenue +4.0% year-over-year).
- 2013: Revenue of $3.2M, expenses of $1.7M, and assets of $25.1M (revenue -41.4% year-over-year).
- 2012: Revenue of $5.4M, expenses of $1.8M, and assets of $23.6M (revenue +299.2% year-over-year).
- 2011: Revenue of $1.3M, expenses of $1.9M, and assets of $20.0M.
View Individual Filing Years
Explore detailed financial data from each IRS 990 filing year for Mary Duke Biddle Foundation:
Data Sources and Methodology
This transparency report for Mary Duke Biddle Foundation is generated by NonprofitSpending's AI analysis engine. The data is sourced from publicly available IRS 990 filings accessed through the ProPublica Nonprofit Explorer API and IRS electronic filing records. The Mission Score, spending breakdown, and other analytical insights are produced by artificial intelligence and should be used as one of multiple factors when evaluating a nonprofit organization.
IRS 990 forms are annual information returns that most tax-exempt organizations must file with the IRS. These forms provide detailed financial information including revenue, expenses, assets, liabilities, and compensation of officers. NonprofitSpending processes this data to provide accessible transparency reports for donors, researchers, and the general public.
Disclaimer
AI-generated analysis based on IRS public records. Not financial or legal advice. Verify information directly with the organization.