Family foundations control billions in charitable assets, but not all operate with equal rigor or transparency. Before partnering with one—whether you're a nonprofit seeking grants, a donor establishing a foundation, or an advisor evaluating stewardship—you need reliable ways to verify legitimacy. Here's how to separate trustworthy operators from red flags.
Check IRS 990-N, 990-EZ, or 990-PF Filings
Every legitimate private foundation files annual tax returns with the IRS. Start here.
- 990-PF (Form 990-PF): Filed by all private foundations with gross receipts over $50,000. This form reveals investment holdings, grant distributions, expenses, and officer compensation.
- 990-N and 990-EZ: Smaller foundations may file these simplified versions if assets fall below certain thresholds.
You can access these filings free through ProPublica's Nonprofit Explorer or GuideStar (now part of Candid). Look for consistent filing history—foundations should file every year. A gap of two years or more signals potential problems. When reviewing the 990-PF specifically, check that listed trustees and officers are identifiable people, not anonymous entities.
Verify IRS Tax-Exempt Status
A foundation's IRS determination letter is foundational proof of legitimacy. Search the IRS Tax Exempt Organization Search tool (on irs.gov) by the foundation's legal name or EIN (Employer Identification Number). The search confirms:
- Active 501(c)(3) status
- The exact legal name the foundation uses for official business
- Whether the foundation has any outstanding compliance issues
If a foundation doesn't appear in this database, it either doesn't exist or has lost tax-exempt status. Either way, it's not trustworthy. Save a screenshot of the confirmation for your records.
Review State Attorney General Filings
Private foundations often must register with state attorneys general, particularly in states where they hold assets or make grants. Many states maintain public databases (California, New York, and Illinois are particularly thorough).
Search for:
- The foundation's registration status in your state
- Any complaints or disciplinary actions
- Recent annual charitable registration renewal documents
These filings typically cost $0–$50 to verify online and may reveal financial summaries not always included in federal filings.
Evaluate Grant-Making Patterns
Legitimate family foundations have coherent giving strategies. Review their recent 990-PF filings (usually available for the past 3–5 years) and note:
- Grant consistency: Do annual grant distributions remain roughly similar year-to-year, or do they fluctuate wildly? Established foundations typically give 4–6% of assets annually (a legal minimum in the U.S. is 5%).
- Stated mission alignment: Verify that grants actually match the foundation's stated charitable purpose. A foundation claiming to fund education shouldn't suddenly give 80% to political causes.
- Recipient legitimacy: Are grant recipients themselves legitimate 501(c)(3) organizations? Cross-check major recipient names against the IRS database.
Foundations with chaotic or mission-drift patterns may indicate poor governance or even intentional misdirection.
Look for Transparency Markers
Well-run family foundations typically publish annual reports, grant guidelines, and contact information. If a foundation has a website, it should include:
- Clear mission statement
- Annual giving summaries or grant lists
- Explicit application guidelines and deadlines
- Named board members or trustees
- Contact details for staff or a grants manager
Foundations that hide this information aren't necessarily illegitimate, but transparency is a strong positive signal. If you can't find basic contact information after 10 minutes of searching, move on.
Ask for References and Verify Board Expertise
Request the names of nonprofits that have recently received grants and contact them directly. Ask:
- How responsive is the foundation's staff?
- Do they follow their own grant guidelines?
- How long from application to funding decision?
Additionally, research the foundation's board members on LinkedIn or via news archives. Trustees with nonprofit experience, financial expertise, or relevant professional credentials suggest serious governance.
Watch for Common Red Flags
- No recent filings: Gaps in 990-PF submissions
- Vague mission statements: Language so broad it could fund anything
- High administrative fees: Foundations spending more than 15–20% of grants on overhead are less efficient
- Pressure to donate or apply quickly: Legitimate foundations don't rush relationships
- Requests for upfront fees: Private foundations should never charge nonprofits application fees
Frequently Asked Questions
Q: How long does it typically take to verify a foundation's legitimacy? You can complete basic verification (IRS status check, recent 990-PF review) in under 30 minutes. Deeper due diligence—contacting references and reviewing state filings—adds another 1–2 hours.
Q: Do all family foundations have websites? No. Smaller or older foundations may rely entirely on 990-PF filings for public information. IRS filings and state registrations are the reliable sources; a website is helpful but not required for legitimacy.
Q: Can I use Mercoly to compare different family foundations' giving histories and structures? Yes—Mercoly aggregates trusted foundation data and provider information in one searchable platform, making it easier to compare multiple foundations against your criteria without hunting across multiple databases.
Start your verification process with the IRS 990-PF filing and work outward from there.