Sections 1.617-3 and 1.617-4 apply on and after January 19, 2017. For rules before January 19, 2017, see §§ 1.617-3 and 1.617-4 as contained in 26 CFR part 1 revised as of April 1, 2016.
[T.D. 9811, 82 FR 6239, Jan. 19, 2017]
source: T.D. 6500, 25 FR 11737, Nov. 26, 1960; 25 FR 14021, Dec. 31, 1960, unless otherwise noted.
cite as: 26 CFR 1.617-5