Special rules for accumulated earnings tax and for personal holding company tax
In applying subsection (a) for the purpose of determining the accumulated earnings tax under section 531 or the tax under section 541 (relating to personal holding companies)—
(1)#
any excluded amount under subsection (a) allowed for the purposes of this subtitle (other than section 531 or section 541) shall be allowed whether or not such amount resulted in a reduction of the tax under section 531 or the tax under section 541 for the prior taxable year; and
(2)#
where any excluded amount under subsection (a) was not allowable as a deduction for the prior taxable year for purposes of this subtitle other than of section 531 or section 541 but was allowable for the same taxable year under section 531 or section 541, then such excluded amount shall be allowable if it did not result in a reduction of the tax under section 531 or the tax under section 541.