and (iii) by increasing the 6 percent amount under subsection (c)(4)(B)(ii) by the subsection (c)(4)(B) bonus amount. (B) Qualified domestic manufacturer For purposes of this subsection— (i) In general The term qualified domestic manufacturer means a taxpayer who has domestic production gross receipts which are more than 50 percent of total gross receipts. (ii) Domestic production gross receipts The term domestic production gross receipts has the meaning given to such term under section 199(c)(4) (as in effect on December 31, 2017). (C) Bonus amount