26 CFR § 26.2651-3
Effective dates
June 25, 2020
(a) In general. The rules of §§26.2651-1 and 26.2651-2 are applicable for terminations, distributions, and transfers occurring on or after July 18, 2005.
(b) Transition rule. In the case of transfers occurring after December 31, 1997, and before July 18, 2005, taxpayers may rely on any reasonable interpretation of section 2651(e). For this purpose, these final regulations, as well as the proposed regulations issued on September 3, 2004 (69 FR 53862), are treated as a reasonable interpretation of the statute.
[T.D. 9214, 70 FR 41142, July 18, 2005]