Treas. Reg. § 1.306-4 Effective/applicability date.

eCFR as of 2026-10-19 · Interprets § 306

The provisions of §§ 1.306-1 through 1.306-3 are applicable on or after June 22, 1954. The provisions of § 1.306-3 relating to section 1022 are effective on and after January 19, 2017.

[T.D. 9811, 82 FR 6237, Jan. 19, 2017]