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Internal Revenue Code · 26 U.S.C.

Chapter 42. PRIVATE FOUNDATIONS; AND CERTAIN OTHER TAX-EXEMPT ORGANIZATIONS

Official text, no changes From the Office of the Law Revision Counsel, release point 119-121 (current through Public Law 119-121 (October 9, 2026)). The official version is at uscode.house.gov (external site).

  1. Subchapter A Private Foundations §§ 4940–4948

    1. § 4940 Excise tax based on investment income
    2. § 4941 Taxes on self-dealing
    3. § 4942 Taxes on failure to distribute income
    4. § 4943 Taxes on excess business holdings
    5. § 4944 Taxes on investments which jeopardize charitable purpose
    6. § 4945 Taxes on taxable expenditures
    7. § 4946 Definitions and special rules
    8. § 4947 Application of taxes to certain nonexempt trusts
    9. § 4948 Application of taxes and denial of exemption with respect to certain foreign organizations

  2. Subchapter B Black Lung Benefit Trusts §§ 4951–4953

    1. § 4951 Taxes on self-dealing
    2. § 4952 Taxes on taxable expenditures
    3. § 4953 Tax on excess contributions to black lung benefit trusts

  3. Subchapter C Political Expenditures of Section 501(c)(3) Organizations § 4955

    1. § 4955 Taxes on political expenditures of section 501(c)(3) organizations

  4. Subchapter D Failure by Certain Charitable Organizations To Meet Certain Qualification Requirements §§ 4958–4960

    1. § 4958 Taxes on excess benefit transactions
    2. § 4959 Taxes on failures by hospital organizations
    3. § 4960 Tax on excess tax-exempt organization executive compensation

  5. Subchapter E Abatement of First and Second Tier Taxes in Certain Cases §§ 4961–4963

    1. § 4961 Abatement of second tier taxes where there is correction
    2. § 4962 Abatement of first tier taxes in certain cases
    3. § 4963 Definitions

  6. Subchapter F Tax Shelter Transactions § 4965

    1. § 4965 Excise tax on certain tax-exempt entities entering into prohibited tax shelter transactions

  7. Subchapter G Donor Advised Funds §§ 4966–4967

    1. § 4966 Taxes on taxable distributions
    2. § 4967 Taxes on prohibited benefits

  8. Subchapter H Excise Tax Based on Investment Income of Private Colleges and Universities § 4968

    1. § 4968 Excise tax based on investment income of private colleges and universities