Iowa Code § 252D.18C: Withholding from lump sum payments.

Child support services or the district court may enter an ex parte order for income withholding when the obligor is paid by a lump sum income source. When a sole payment is made or payment occurs at two-month or greater intervals, the withholding order may include all current and delinquent support due through the current month, but shall not exceed the amounts specified in 15 U.S.C. §1673(b).