Title 26 › Subtitle A — Income Taxes › CHAPTER 1 — NORMAL TAXES AND SURTAXES › Subchapter F — Exempt Organizations › PART II — PRIVATE FOUNDATIONS › § 507
A private foundation stops being a private foundation only in two main ways: the organization tells the IRS it plans to stop, or the IRS finds willful, repeated, or flagrant wrongdoing that makes the group liable for tax under chapter 42, tells the group, and the tax is paid or fully forgiven. There are special rules for becoming a public charity instead of a private foundation. A foundation can end its private status by giving all its net assets to one or more public charities that have been public charities for at least 60 calendar months, or by meeting the public-charity tests in section 509(a) either within a 12-month period that starts with its first taxable year after December 31, 1969, or during a continuous 60-calendar-month period starting with the first day of any taxable year after December 31, 1969. To use the 12- or 60-month route, the foundation must tell the IRS before the period starts (or within 90 days after final rules are issued) and must prove afterward that it met the tests. When the IRS can tax a foundation that stops being private, the tax equals the smaller of (a) the total tax benefit the foundation got from its tax-exempt 501(c)(3) status (measured by added taxes to contributors and to the foundation’s income, plus interest, with special trust rules), or (b) the value of the foundation’s net assets. A “substantial contributor” is anyone who gave more than $5,000 and more than 2% of all gifts (special rules apply for valuation, spouses, trusts, and when someone stops being “substantial”). Asset value is measured at the higher of the first day action began that led to stopping private status or the date it actually stops. If assets are moved, the tax is treated as imposed from that first day of action. The IRS may cancel unpaid tax if the foundation gives all assets to qualifying public charities that have existed 60 months, or if a state officer notifies the IRS within one year that court-ordered corrective action to preserve the assets has begun and later certifies it is complete.
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Internal Revenue Code, Source: USLM XML via OLRC
Legislative History
Reference
Citation
26 U.S.C. § 507
Title 26, Internal Revenue Code
Last Updated
Sep 22, 2026
Release point: 119-110