Iowa Code § 633.352
Unless otherwise provided by the will, the provisions of chapter 637 that conflict with this division VII, part 3, shall not apply to the allocation and distribution of estate income.
[C73, §2403 – 2405; C97, §3334, 3335; C24, 27, 31, 35, 39, §11953, 11954; C46, 50, 54, 58, 62, §635.49, 635.50; C66, 71, 73, 75, 77, 79, 81, §633.352] 99 Acts, ch 124, §31; 2012 Acts, ch 1123, §7; 2013 Acts, ch 30, §164