Section 1.1502-0 - Effective dates(a) The regulations under section 1502 are applicable to taxable years beginning after December 31, 1965, except as otherwise provided therein.(b) The provisions of §§ 1.1502-0A through 1.1502-3A , 1.1502-10A through 1.1502-19A , and 1.1502-30A through 1.1502-51A (as contained in the 26 CFR part 1 edition revised April 1, 1996) are applicable to taxable years beginning before January 1, 1966.T.D. 8677, 61 FR 33325, June 27, 1996