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U.S. Code Title 26
Subtitle A
Chapter 1
Subchapter F
Part I
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Part I: GENERAL RULE
Section 501: Exemption from tax on corporations, certain trusts, etc.
Section 502: Feeder organizations
Section 503: Requirements for exemption
Section 504: Status after organization ceases to qualify for exemption under section 501(c)(3) because of substantial lobbying or because of political activities
Section 505: Additional requirements for organizations described in paragraph (9) or (17) of section 501(c)
Section 506: Organizations required to notify Secretary of intent to operate under 501(c)(4)