Section 668.13 - Interest on judgmentsInterest shall be allowed on all money due on judgments and decrees on actions brought pursuant to this chapter, subject to the following:
1. Interest, except interest awarded for future damages, shall accrue from the date of the commencement of the action.2. If the interest rate is fixed by a contract on which the judgment or decree is rendered, the interest allowed shall be at the rate expressed in the contract, not exceeding the maximum rate permitted under section 535.2.3. Interest shall be calculated as of the date of judgment at a rate equal to the one-year treasury constant maturity published by the federal reserve in the H15 report settled immediately prior to the date of the judgment plus two percent. The state court administrator shall distribute notice monthly of that rate and any changes to that rate to all district courts.4. Interest awarded for future damages shall not begin to accrue until the date of the entry of the judgment.5. Interest shall be computed daily to the date of the payment, except as may otherwise be ordered by the court pursuant to a structured judgment under section 668.3, subsection 7.6. Structured, periodic, or other nonlump-sum payments ordered pursuant to section 668.3, subsection 7, shall reflect interest in accordance with annuity principles.87 Acts, ch 157, §8; 97 Acts, ch 197, §14, 16; 2001 Acts, ch 87, §9, 10; 2003 Acts, ch 151, §58Referred to in §202C.3, 535.3, 551A.8, 602.1209