Private Foundation Self-Dealing: Disqualified Persons, Excise Taxes, Exceptions

The private foundation self-dealing rules in Section 4941 of the Internal Revenue Code prohibit almost every financial transaction between a private foundation and its insiders, whether or not the deal is fair and whether or not the foundation comes out ahead. A violation triggers an automatic 10 percent excise tax on the disqualified person for each year the transaction stays uncorrected, plus a 5 percent tax on any foundation manager who knowingly went along. If the problem is not fixed in time, the tax on the disqualified person jumps to 200 percent. Unlike most other Chapter 42 penalties, the first-tier self-dealing tax cannot be waived for reasonable cause.¹²

Who Is a Disqualified Person

Every self-dealing question starts here. Section 4946 defines the category broadly to reach anyone with meaningful influence over the foundation or close ties to those who do.³

Substantial contributors, meaning anyone who has given more than $5,000 to the foundation where that amount also exceeds 2 percent of total contributions received by the end of the tax year of the gift. The label sticks permanently once it attaches.⁴
Foundation managers, meaning officers, directors, trustees, and anyone else with similar decision-making authority.
More-than-20-percent owners of a corporation, partnership, trust, or unincorporated enterprise that is itself a substantial contributor.
Family members: spouses, ancestors, children, grandchildren, great-grandchildren, and the spouses of those lineal descendants. Legally adopted children count as lineal descendants.⁵
Certain government officials, but only for purposes of the self-dealing rules.

Siblings and in-laws (other than spouses of lineal descendants) are not disqualified persons under this definition.⁵ A foundation manager’s brother can transact with the foundation without triggering these rules, which often surprises people given how broadly the definition otherwise reaches.

Which Transactions Are Prohibited

Section 4941(d)(1) lists six categories of transactions that count as self-dealing when they occur between a private foundation and a disqualified person. The rules operate on strict liability. The IRS does not weigh fairness, good faith, or benefit to the foundation. The transaction itself is the violation.¹

Sales, exchanges, or leases of property in either direction. Selling a building to a disqualified person at full market value is just as prohibited as selling it at a discount.
Lending money or extending credit. Loans from the foundation to a disqualified person are barred outright, and loans in the other direction are restricted unless they meet the interest-free exception below.
Providing goods, services, or facilities. Sharing office space, staff, or equipment with a disqualified person’s private business fits here.
Paying compensation or reimbursing expenses, unless the payment qualifies under the narrow personal-services exception.
Transferring foundation income or assets to, or for the use of, a disqualified person. This is the catch-all category. It reaches things like letting a board member use foundation property for personal events or using foundation funds to satisfy a disqualified person’s personal pledge to another charity.⁶
Payments to government officials, with a narrow exception for post-government-service employment arrangements if the official is leaving government within 90 days.

Donating mortgaged property is a trap that catches well-meaning donors. If a disqualified person transfers property and the foundation assumes the mortgage, or if the disqualified person placed the mortgage within the 10 years before the transfer, the IRS treats the gift as a sale, which is a prohibited transaction.⁷

The rules also reach indirect transactions. A disqualified person’s deal with an organization the foundation controls can count as self-dealing by the foundation, subject to some narrow safe harbors for pre-existing business relationships and small retail transactions.⁸

The Exceptions That Keep Foundations Functional

A handful of tightly drawn exceptions let foundations do necessary business with the people around them.

Reasonable Compensation for Personal Services

A disqualified person other than a government official may receive compensation for personal services that are reasonable and necessary to carry out the foundation’s exempt purpose, so long as the amount is not excessive.¹ Treasury regulations cite legal services, investment management, and general banking and trust services (such as maintaining a checking account or renting a safe deposit box to the foundation) as qualifying examples. Brokerage services where the disqualified person acts as agent for the foundation qualify; a dealer who buys from the foundation as principal and resells does not.⁹

Government officials are cut out of this exception entirely. No matter how reasonable the fee, a foundation cannot pay a disqualified person who holds a covered government position.

Interest-Free Loans to the Foundation

A disqualified person may lend money to the foundation without triggering self-dealing, but only if the loan carries zero interest and the proceeds are used exclusively for charitable purposes. Any interest charge at all, even below-market, kills the exception.

Free Goods, Services, or Facilities

A disqualified person can provide goods, services, or facilities to the foundation at no charge, provided the foundation uses them exclusively for exempt purposes. Donated office space and pro bono professional work fit here.

Foundation Services on Public Terms

The foundation may provide its own goods, services, or facilities to a disqualified person on terms no more favorable than those offered to the general public. A foundation-run museum can sell a board member a ticket at the same price it charges everyone else.

Incidental Benefits

Public recognition a substantial contributor receives from the foundation’s charitable activities, such as a donor’s name on a funded building, is treated as incidental and does not by itself create self-dealing.¹⁰

Excise Taxes and Why They Cannot Be Waived

The penalty structure has two tiers, and both the disqualified person and any knowingly participating foundation manager face separate taxes.

At the first tier, the disqualified person owes 10 percent of the amount involved for each year (or part of a year) in the taxable period. A foundation manager who knowingly participated owes 5 percent, capped at $20,000 per act, unless the participation was not willful and was due to reasonable cause.¹¹ The taxable period runs from the date of the act until the earliest of a notice of deficiency, completion of correction, or assessment of the tax. An uncorrected transaction accumulates the 10 percent tax every year it stays open.¹²

If the act is not corrected within the taxable period, the second tier applies. The disqualified person owes 200 percent of the amount involved. A foundation manager who refused to agree to correction owes 50 percent, again capped at $20,000 per act.

The “amount involved” is generally the greater of the money or fair market value of property given or received. For the compensation exception, it is only the excess above a reasonable amount.

Here is what makes these penalties unusually strict. The first-tier self-dealing tax under Section 4941(a) is explicitly excluded from the abatement provisions of Section 4962.² For most other Chapter 42 excise taxes, the IRS can waive the first-tier penalty when the violation was due to reasonable cause, was not willful, and was corrected promptly. That relief valve does not exist for self-dealing. Even an honest, inadvertent transaction with a disqualified person triggers the full 10 percent tax with no path to abatement.

Correcting a Self-Dealing Transaction

Correction means undoing the transaction as far as possible and leaving the foundation in a financial position no worse than if the disqualified person had been acting under the highest fiduciary standards.¹

For a prohibited sale of property from the foundation to a disqualified person, correction usually means rescinding the sale. The disqualified person returns the property and receives back the lesser of the cash originally paid or the property’s current fair market value. On top of that, the disqualified person must pay the foundation any net profits earned from the property while holding it. If the disqualified person already resold the property to an unrelated buyer at arm’s length before the correction period ends, rescission is not required, but the disqualified person still owes the foundation the difference between the resale proceeds (or current fair market value, whichever is greater) and what would have been returned through rescission, plus net profits.¹³

For a prohibited loan from the foundation, correction requires repaying the full principal plus interest at a fair market rate determined as of the date the self-dealing occurred.¹⁴

How Self-Dealing Gets Reported

Every private foundation must disclose self-dealing on its annual Form 990-PF. Part VI-B of that form asks whether the foundation engaged in any of the six categories during the tax year. If the answer is yes and no exception applies, the foundation must file Form 4720 to calculate and report the excise taxes.¹⁵

The filing deadlines split by taxpayer. The foundation files Form 4720 by the due date of its Form 990-PF, not including extensions. Each disqualified person or foundation manager who personally owes a self-dealing tax files their own Form 4720 by the 15th day of the 5th month after the end of their individual tax year, which is May 15 for calendar-year individuals.¹⁶ Missing these filings adds failure-to-file penalties on top of the excise taxes; it does not reduce what is owed.

1
Office of the Law Revision Counsel. 26 USC 4941 – Taxes on Self-Dealing
2
Office of the Law Revision Counsel. 26 USC 4962 – Abatement of First Tier Taxes in Certain Cases
3
Office of the Law Revision Counsel. 26 USC 4946 – Definitions and Special Rules
4
Legal Information Institute. Definition: Substantial Contributor from 26 USC 507(d)(2)
5
Internal Revenue Service. IRC Section 4946 – Definition of Disqualified Person
6
Internal Revenue Service. Acts of Self-Dealing by Private Foundation
7
Internal Revenue Service. Self-Dealing by Private Foundations: Sales or Exchanges of Property
8
Internal Revenue Service. Private Foundations: Indirect Self-Dealing
9
eCFR. 26 CFR 53.4941(d)-3 – Exceptions to Self-Dealing
10
Internal Revenue Service. Self-Dealing by Private Foundations: Use of Foundation’s Income or Assets
11
Office of the Law Revision Counsel. 26 USC 4941 – Taxes on Self-Dealing
12
eCFR. 26 CFR 53.4941(e)-1 – Definitions
13
Internal Revenue Service. Correction of Self-Dealing Transactions – Sales by Foundation
14
Internal Revenue Service. Private Foundations: Amount Involved – Self-Dealing Lending of Money to Disqualified Persons IRC Section 4941(e)(2)
15
Internal Revenue Service. Instructions for Form 990-PF
16
Internal Revenue Service. Instructions for Form 4720