Reg. § 1.1502-0 Effective/applicability dates.

(a) In general Except as provided in paragraph (b) of this section, the consolidated return regulations (as defined in § 1.1502-1(g)) are applicable to taxable years beginning after December 31, 1965.

(b) Exceptions The applicability date described in paragraph (a) of this section does not apply to any provision of the consolidated return regulations with an applicability or effective date different than the date provided by paragraph (a) of this section.