Private Foundation
A 501(c)(3) organization typically funded by a single source, such as a family or corporation, subject to stricter IRS regulations.
Private Foundation is a term from U.S. nonprofit financial reporting — typically a line item or schedule on IRS Form 990, the annual disclosure tax-exempt organizations file. The definition here is the IRS-file usage, which can differ from how the term is used in general financial writing or accounting standards. On the LakeQuality nonprofit efficiency rubric, Private Foundation feeds into one of the four scoring factors (program ratio, revenue growth, reserves, or CEO compensation). Understanding how the term is computed at IRS is part of reading nonprofit pages defensibly.
Each nonprofit page on the site surfaces the specific Private Foundation value for that organization (when Form 990 reports one), so the general definition here translates into a concrete data point on the per-nonprofit pages you actually use.
A private foundation is a type of 501(c)(3) tax-exempt organization that does not meet the public support tests required for public charity status. Most private foundations are funded by a single individual, family, or corporation, such as the Bill & Melinda Gates Foundation, the Ford Foundation, or the Walton Family Foundation. The IRS applies stricter regulations to private foundations than to public charities, including a mandatory 5% annual distribution requirement (the organization must distribute at least 5% of its investment assets each year in grants or program activities), strict self-dealing prohibitions that prevent transactions between the foundation and its substantial contributors, limits on business holdings, and a 1.39% excise tax on net investment income. Private foundations file Form 990-PF rather than the standard Form 990, and they must publicly disclose their grant recipients. There are two subtypes: operating foundations, which run their own programs, and non-operating (grantmaking) foundations, which primarily distribute funds to other organizations. While private foundations play a critical role in the philanthropic ecosystem by providing significant funding for research, education, and social programs, their governance structure concentrates decision-making authority, making transparency and accountability particularly important.