TCP, Tax Compliance and Planning

Sources for Exempt Organizations: UBIT, Private Foundation Excise Taxes, and Intermediate Sanctions

Last reviewed 2026-10-08

The standards and authorities behind PocketCPA's TCP lessons on Exempt Organizations: UBIT, Private Foundation Excise Taxes, and Intermediate Sanctions. The topic rests on IRC Sec. 511-514 / 4940-4945 / 4958.

About this topic

Exemption is not immunity. An organization that clears Sec. 501(c)(3) still meets the Code in three separate places, and the exam tests all three because they use different bases, different rates and different taxpayers.

The first is the unrelated business income tax of Sec. 511 through Sec. 514, which reaches commercial income at ordinary rates. The second is the Chapter 42 excise regime of Sec. 4940 through Sec. 4945, which polices what a private foundation does with its money. The third is Sec. 4958, which reaches an insider who takes more than fair value out of a public charity.

Key points

Unrelated business income (UBI) is taxable when from a regularly carried on trade or business not substantially related to the exempt purpose.
Common exclusions from UBI include investment income, royalties, and income from activities conducted by volunteers.
Private foundations pay a 1.39% excise tax on net investment income and face penalties for self-dealing and excess business holdings.
Intermediate sanctions (Sec. 4958) impose excise taxes on excess benefit transactions with disqualified persons.

What the lessons cover

The unrelated business income tax
Exclusions and debt-financed income
Private foundation excise taxes
Private foundations: self-dealing (Sec. 4941)
Private foundations: failure to distribute income (Sec. 4942)
Private foundations: excess business holdings (Sec. 4943)
Private foundations: jeopardizing investments and taxable expenditures (Secs. 4944 and 4945)
Intermediate sanctions
Public charity or private foundation: the classification that picks the regime
Lobbying, campaign intervention, and the Sec. 501(h) election
The two-tier design: taxable period, correction, and abatement
A full year, start to finish

Authoritative references

Exemption and the unrelated business income tax:

Sec. 501(a) and (c)(3), the exemption from tax, and the charitable, educational, and other organizations described in Sec. 501(c)(3), with the other categories including (c)(1), (c)(6) and (c)(14).
Sec. 511(a) and (b), the tax on the unrelated business taxable income of an exempt organization, imposed at the corporate rates of Sec. 11(b) or the rates for trusts.
Sec. 512(a)(1), unrelated business taxable income as gross income from an unrelated trade or business less directly connected deductions, and Sec. 512(a)(6), the separate computation for each trade or business.
Sec. 512(b), the modifications that exclude dividends, interest, and annuities at (b)(1), royalties at (b)(2), rents at (b)(3), and gains and losses from the sale of property at (b)(5), and allow the net operating loss deduction at (b)(6), the charitable deduction at (b)(10) and (b)(11), and the specific deduction at (b)(12); (b)(13) reaches interest, annuities, royalties, and rents from a controlled organization.
Sec. 513(a), the unrelated trade or business as a regularly carried on activity not substantially related to the exempt purpose, with the exclusions at (a)(1), (a)(2) and (a)(3) for volunteer labor, convenience, and donated merchandise, and Sec. 513(c), (d), (f), (h) and (i), the special rules for advertising and other activities, bingo, certain distributions and mailing lists, and qualified sponsorship payments.
Sec. 514(a) through (c), debt-financed income: the acquisition indebtedness at (c)(1), the debt-financed property at (b)(1), the average acquisition indebtedness percentage at (a)(1) and (a)(2), and the exceptions at (b)(1)(D) and (c)(7).
Sec. 6033(a), (a)(3)(A) and (j), the annual information return and the penalty for failure to file.

Private foundations:

Sec. 509(a)(1) through (a)(4), the definition of a private foundation as an organization described in Sec. 501(c)(3) other than a public charity, with the supporting organization at (a)(3), and Sec. 170(b)(1)(A), the public charity categories.
Sec. 507(d)(2), the termination tax on a private foundation.
Sec. 4940(a), (c) and (d), the excise tax on net investment income, its computation and the reduced rate.
Sec. 4941(a) through (e), the initial and additional taxes on self-dealing, the definition of an act of self-dealing at (d)(1), and the definition of a disqualified person by reference to Sec. 4946(a), (b) and (d).
Sec. 4942(a) through (j), the taxes on failure to distribute income, the distributable amount at (d), the qualifying distributions at (g), and the operating foundation rules at (j)(3).
Sec. 4943(a) through (f), the taxes on excess business holdings and the permitted holdings at (c).
Sec. 4944(a) through (e), the taxes on investments that jeopardize the charitable purpose.
Sec. 4945(a) through (i), the taxes on taxable expenditures, including the expenditure responsibility rules at (h) and the definition of a taxable expenditure at (d).
Sec. 4955(a), (b) and (d), the taxes on political expenditures of a Sec. 501(c)(3) organization.

Intermediate sanctions, lobbying, and the two-tier design:

Sec. 4958(a)(1) and (a)(2), the tax on an excess benefit transaction, imposed on the disqualified person and on the organization manager, with the definitions at (c)(1)(A), (e) and (f).
Sec. 4911(a), (b), (c) and (d) and Sec. 501(h), the election and the limits on expenditures to influence legislation by a public charity, with the safe harbor of the expenditure test.
Sec. 4962(a) through (c), the abatement of first-tier taxes where the violation was due to reasonable cause and corrected within the correction period.
Sec. 318, the constructive ownership rules applied in the disqualified person and excess business holdings definitions.

How PocketCPA uses these sources

Every lesson is written in original words and cites the paragraph each rule comes from. No standard's text is reproduced. How lessons and questions are written and checked is set out in our methodology.