For purposes of the preceding sentence, the term "total dividends paid or considered as paid during the taxable year" includes deficiency dividends paid with respect to the taxable year that are not otherwise excluded under this subdivision or section 857(b)(3)(A). The term, however, does not include either deficiency dividends paid during the taxable year with respect to a preceding taxable year ending before October 5, 1976, capital gains dividends.
26 C.F.R. §1.857-2
Sec. 856(d)(4) (90 Stat. 1750; 26 U.S.C. 856(d)(4) ); sec. 856(e)(5) (88 Stat. 2113; 26 U.S.C. 856(e)(5) ); sec. 856(f)(2) (90 Stat. 1751; 26 U.S.C. (856(f)(2)); sec. 856(g)(2) (90 Stat. 1753; 26 U.S.C. 856(g)(2) ); sec. 858(a) (74 Stat. 1008; 26 U.S.C. 858(a) ); sec. 859(c) (90 Stat. 1743; 26 U.S.C. 859(c) ); sec. 859(e) (90 Stat. 1744; 26 U.S.C. 859(e) ); sec. 6001 (68A Stat. 731; 26 U.S.C. 6001 ); sec. 6011 (68A Stat. 732; 26 U.S.C. 6011 ); sec. 6071 (68A Stat. 749, 26 U.S.C. 6071 ); sec. 6091 (68A Stat. 752; 26 U.S.C. 6091 ); sec. 7805 (68A Stat. 917; 26 U.S.C. 7805 ), Internal Revenue Code of 1954)