A private foundation is a type of nonprofit organization created and funded primarily by an individual, family, or corporation—most often through a significant endowment. Unlike public charities, which raise money from a broad base of donors, private foundations typically rely on a single primary source of funding. They usually make grants to other nonprofits, though some operate their own charitable programs.
Private foundations are heavily regulated by the IRS. They must distribute at least 5% of their net investment assets annually to retain tax-exempt status, file an annual Form 990-PF (detailing finances, governance, and grantmaking), and comply with rules that limit self-dealing and certain administrative expenses.