American philanthropy is undergoing its most significant structural transformation in a century. The rise of donor-advised funds, the emergence of mega-foundations, and shifting giving patterns are reshaping who funds what — and how. Using data from IRS filings for 104,351 organizations in the Philanthropy & Grantmaking category (NTEE T), we analyzed the landscape of institutional giving in America.
The Foundation Giants
The landscape of American philanthropy is dominated by a handful of enormous institutions. The Bill & Melinda Gates Foundation, with assets exceeding $70 billion, remains the largest private foundation by a wide margin. The Lilly Endowment ($42B), the Ford Foundation ($16B), the Robert Wood Johnson Foundation ($14B), and the William and Flora Hewlett Foundation ($13B) round out the top five by assets.
But size doesn't always correlate with giving. Foundation payout rates — the percentage of assets distributed annually — vary significantly. The IRS requires private foundations to distribute at least 5% of assets annually, but many hover just at or slightly above this minimum. A $50 billion foundation paying out 5% distributes $2.5 billion annually, while a $500 million foundation paying out 10% distributes only $50 million — but is arguably being more generous relative to its capacity.
The Donor-Advised Fund Revolution
The biggest story in modern philanthropy isn't traditional foundations — it's the explosive growth of donor-advised funds (DAFs). Fidelity Charitable alone processes approximately $19 billion in annual contributions, making it the largest single charitable entity in America by incoming donations. Schwab Charitable, Vanguard Charitable, and the National Philanthropic Trust each handle billions more.
DAFs have become the preferred giving vehicle for wealthy Americans because of their flexibility: donors get an immediate tax deduction when they contribute, but can distribute grants to charities on their own timeline — or not at all. Critics argue this creates a "warehousing" problem where billions sit in DAF accounts earning investment returns while charitable needs go unmet. Supporters counter that DAFs make giving easier and more strategic.
The data supports the concern about payout timing: the average DAF account distributes about 22% of its balance annually, well above the foundation minimum, but there's enormous variation. Some accounts are used purely as pass-throughs (contributing and granting in the same year), while others accumulate assets for years without meaningful distribution.
Community Foundations: The Local Powerhouses
Community foundations represent a fascinating middle ground between mega-foundations and individual giving. Organizations like the Silicon Valley Community Foundation ($13.5B in assets), the Greater Kansas City Community Foundation, and the Cleveland Foundation serve as local philanthropic infrastructure — managing donor-advised funds, making grants, and convening community stakeholders.
The Silicon Valley Community Foundation illustrates both the promise and peril of this model. Its assets surged past $13 billion largely due to tech-wealth donors using it as a DAF platform, but governance controversies and leadership turnover raised questions about accountability when foundations grow faster than their institutional capacity can support.
Where the Money Goes
Foundation giving tends to cluster in several priority areas:
- Education: Consistently the largest recipient category, receiving roughly 25-30% of foundation grants
- Health: The second-largest category, driven by major health-focused foundations like Robert Wood Johnson and the Commonwealth Fund
- Human Services: Food security, housing, and direct services receive significant foundation support, particularly from community foundations
- Environment: Climate change has become an increasingly prominent foundation priority, with organizations like Bloomberg Philanthropies and the Bezos Earth Fund committing billions
- International Development: The Gates Foundation alone accounts for a massive share of international health and development funding
The Future of Foundation Giving
Several trends are reshaping the foundation landscape. "Spend-down" foundations — those that plan to distribute all assets within a defined timeframe rather than existing in perpetuity — are gaining prominence. MacKenzie Scott's approach of rapid, trust-based giving has challenged the traditional model of lengthy application processes and restricted grants. And the growing wealth of tech billionaires is creating a new generation of mega-foundations with different philosophies and priorities than their predecessors. The philanthropic sector, holding $1.48 trillion in assets, sits at an inflection point between tradition and transformation.