Before you commit resources to a private or family foundation—whether you're evaluating one for a grant, considering working with their board, or vetting their governance practices—you need solid peer reviews and independent ratings. The challenge is that these foundations operate with varying transparency levels, and reliable assessment data isn't always obvious where to find it.
IRS Form 990-PF: Your Foundation's Public Record
Every private foundation must file a Form 990-PF annually with the IRS, and these filings are public. This is your first stop for concrete financial data: how much the foundation distributes each year, what assets it holds, compensation for officers and directors, and whether it meets the 5% minimum distribution requirement.
Access these filings through GuideStar (now Candid), which aggregates 990s for thousands of foundations. You'll see three years of historical data—typically showing distribution trends, grant sizes, and spending patterns. This isn't peer commentary, but it's verified financial transparency that tells you whether a foundation actually practices what it claims about generosity and governance.
Charity Navigator & CharityWatch Ratings
These two platforms rate foundations on financial health, transparency, and accountability using standardized metrics:
Charity Navigator assigns star ratings (1–4 stars) based on financial efficiency, expert leadership, and transparency practices. Not every private foundation is rated here—they typically focus on larger, more active grantmakers—but if yours is listed, the breakdown shows program expense ratio, administrative costs, and governance structure.
CharityWatch (formerly the American Institute of Philanthropy) uses letter grades A–F. They're more selective and rigorous; fewer foundations get rated, but those that do receive detailed analysis. Their reports flag concerns like excessive overhead or questionable executive compensation.
Neither platform includes peer reviews in the traditional sense (like Trustpilot reviews), but their expert evaluations function as independent audits of foundation quality.
Foundation-Specific Intelligence Databases
The Foundation Directory Online (Candid) is the industry standard for serious due diligence. Beyond basic 990 data, it lets you:
- Search by geographic focus, grant size, subject area, and giving patterns
- Compare multiple foundations side-by-side
- Track year-over-year changes in funding priorities
- Review grant recipients and grant amounts going back 5+ years
A subscription runs $395–$1,695 annually depending on access level, but nonprofit staff and grantees can often access free or discounted versions through their library systems.
FoundationSearch.com offers free searches of foundation profiles, including giving history and trustee information. It's less detailed than Candid but requires no subscription.
Peer Networks & Community Assessment
Unlike consumer platforms, foundation peer evaluation happens through:
- Regional associations of grantmakers (every region has one) that maintain member directories and often publish standards for responsible grantmaking
- Council on Foundations membership directory—foundations that belong signal commitment to best practices and governance standards
- Local community foundation networks that share informal intelligence about grant acceptance rates, responsiveness, and how well foundations support their stated mission
Call a regional grantmaker association for your area and ask directly: "Which foundations in our sector have solid reputations for responsive, fair grant processes?" These conversations surface real-world experiences that no rating system captures.
Red Flags to Watch For
When reviewing a private or family foundation, look for:
- Grants that haven't changed in 10+ years (suggests inflexible or inactive leadership)
- Form 990-PF filed late or with incomplete information (possible governance issues)
- Administrative expenses consistently above 20% (inefficient spending)
- No board transitions in 15+ years (potential stagnation)
- Restricted giving focused only on founder's family members or narrow causes
Finding Trusted Providers
If you're working with foundation consultants, administrators, or professional advisors to manage or interact with a foundation, Mercoly helps you compare and find trusted private and family foundations providers in one place—letting you cross-reference credentials, client reviews, and service offerings without juggling multiple research tools.
Frequently Asked Questions
Q: If a private foundation isn't rated on Charity Navigator or CharityWatch, does that mean it's not trustworthy? Not necessarily. Larger, more active foundations get rated more often. Smaller family foundations may have excellent practices but simply fall below those platforms' thresholds. Cross-check the 990-PF filing directly and ask the foundation for references.
Q: How often should I re-check a foundation's financial data and ratings? Check annually before submitting a grant proposal or entering a relationship. Foundation priorities, leadership, and financial health shift, especially when founders pass away or new trustees join.
Q: Can I find reviews from other grantees about a specific foundation's grant process? Rarely on public platforms, but yes through informal networks. Contact three organizations that recently received grants from that foundation and ask about their experience—most will speak candidly off the record.
Start your foundation due diligence today by pulling their Form 990-PF and cross-referencing it with Charity Navigator and your regional grantmaker association.