In general
If paragraph (1) applies to any non-RIC year of an investment company, such investment company shall pay interest at the underpayment rate established under section 6621—
(i)#
on an amount equal to 50 percent of the amount referred to in paragraph (2)(A)(i),
(ii)#
for the period—
(I) which begins on the last day prescribed for payment of the tax imposed for the non-RIC year (determined without regard to extensions), and
(II) which ends on the date the determination is made.
(ii)(I)#
which begins on the last day prescribed for payment of the tax imposed for the non-RIC year (determined without regard to extensions), and
(ii)(II)#
which ends on the date the determination is made.