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Keyed to § 509Open in workspace

Reg. § 1.509(e)-1 Definition of gross investment income.

26 CFR § 1.509(e)-1eCFR data as of 2026-07-14

For the distinction between gross receipts and gross investment income, see .

(Sec. 7805, Internal Revenue Code of 1954, 68A Stat. 917; 26 U.S.C. 7805)

[T.D. 7212, 37 FR 21925, Oct. 17, 1972]

Official eCFR text of § 1.509(e)-1

Source: decipher.legal/cfr/26/1.509(e)-1 · Treasury Regulations (26 CFR), eCFR data as of 2026-07-14

Regulations for § 509 (10)

  • Reg. § 1.509(a)-1Definition of private foundation.
  • Reg. § 1.509(a)-2Exclusion for certain organizations described in section 170(b)(1)(A).
  • Reg. § 1.509(a)-3Broadly, publicly supported organizations.
  • Reg. § 1.509(a)-4Supporting organizations.
  • Reg. § 1.509(a)-5Special rules of attribution.
  • Reg. § 1.509(a)-6Classification under section 509(a).
  • Reg. § 1.509(a)-7Reliance by grantors and contributors to section 509(a) (1), (2), and (3) organizations.
  • Reg. § 1.509(b)-1Continuation of private foundation status.
  • Reg. § 1.509(c)-1Status of organization after termination of private foundation status.
  • Reg. § 1.509(d)-1Definition of support.
← Reg. § 1.509(d)-1Definition of support.Reg. § 1.511-1 →Imposition and rates of tax.