Annualized tax
For purposes of paragraph (1), the term “annualized tax” means, with respect to any payment, the amount of tax which would be imposed by section 1(c) 1 (determined without regard to any rate of tax in excess of the fourth lowest rate of tax applicable under section 1(c) 1 ) on an amount of taxable income equal to the excess of—
(A) the annualized amount of such payment, over
(B) the amount determined under paragraph (2).