The earnings and profits derived by a corporation during a taxable year in which such corporation is a DISC, before reduction for any distributions during the year, but reduced by amounts deemed distributed under section
995
(b)(1), shall constitute the DISC income for such year. The earnings and profits of a DISC for a taxable year include any amounts includible in such DISC’s gross income pursuant to section
951
(a) for such year. Accumulated DISC income shall be reduced by deemed distributions under section
995
(b)(2).