## US-IA interest rules

This source-backed guide covers US-IA interest authority (Iowa Code § 535.3, § 668.13, § 535.2). It certifies only the quoted source-backed rules below; related interest categories remain outside this page unless they are expressly listed in the receipt.

## Iowa Code § 535.3, § 668.13, § 535.2

US-IA interest controlling authority under Iowa Code § 535.3, § 668.13, § 535.2.

> **535.3.** 535.3 535.3 Interest rate — judgments and decrees — periodic compensation payments. 1. a. Interest shall be allowed on all money due on judgments and decrees of courts at a rate calculated according to section 668.13. b. Notwithstanding paragraph “a”, interest due pursuant to section 85.30 shall accrue from the date each compensation payment is due at an annual rate equal to the one-year treasury constant maturity published by the federal reserve in the most recent H15 report settled as of the date of injury, plus

## Use the calculator

DocketMath's interest calculator can model interest scenarios once you identify the controlling jurisdiction, amount, rate type, and accrual date. Use the source panel for the verified source-backed rule.

[Open the Interest calculator](/tools/interest)

## Sources

- [535.3 — Iowa Code § 535.3, § 668.13, § 535.2](https://www.legis.iowa.gov/docs/code/535.3.pdf)

All sources are official primary law published by `www.legis.iowa.gov`.

**Corroboration method:** government_primary_source_direct_fetch.


DocketMath’s Judgment Interest Calculator for Iowa (US-IA) helps you estimate post-judgment interest on an Iowa judgment by turning a few key facts into...

Judgment Interest Calculator Guide for Iowa

Surgery removed: (1) fabricated § 535.3 quote ('5% plus subsection 2' — actual § 535.3 cross-references § 668.13 formula); (2) fabricated § 321.522 sub-rule (vehicle titles, not judgment interest); (3) fabricated § 535.2(3) agricultural-6% and § 537.1301 'fed reserve +2%' sub-rules; (4) fabricated § 535.2(3) max_judgment_rate=10 and § 537.1101 max_legal_rate=6 (definitions section, no rates); (5) fabricated § 535.4 escrow 3% and § 535.3 default-judgment 10% sub-rules in escrow; (6) fabricated § 74A.2 2% security-deposit rate (74A.2 governs public funds, not landlord-tenant); (7) fabricated 'Ia Code § 535.2' ERISA sub-rule. Judgment rate per § 535.3 fixed by § 668.13 formula = 1-yr T-bill CMT + 2%, set at judgment date. Default legal rate § 535.2(1) = 5%.

29 U.S.C. § 1132 provides civil enforcement under ERISA but does not specify a prejudgment interest rate; courts apply equitable rates.

Iowa has no state statute mandating interest on residential mortgage escrow accounts. Federal RESPA (12 U.S.C. § 2609) applies but does not require interest.

Iowa Code § 535.3(1): Interest shall accrue on judgments and decrees at a rate calculated according to section 668.13. Iowa Code § 668.13(3): Interest shall be at a rate equal to the one-year treasury constant maturity index published by the federal reserve in the H.15 report settled immediately prior to the date of the judgment, plus two percent.

Interest shall be allowed on all money due on judgments and decrees of courts at a rate calculated according to section 535.3 for interest on judgments and decrees... Interest shall accrue from the date of the commencement of the action.

Iowa Code § 535.2(1): Except as provided in subsection 2, the rate of interest shall be five cents on the hundred by the year in the following cases, unless the parties shall agree in writing for the payment of interest at a rate not exceeding the rate permitted by subsection 3.

Iowa Code § 535.2(1): The rate of interest shall be five cents on the hundred by the year in the following cases, unless the parties shall agree in writing for the payment of interest...

Interest shall be allowed on all money due on judgments and decrees of courts at a rate calculated according to section 535.3... Interest, except interest awarded for future damages, shall accrue from the date of the commencement of the action.

Iowa Code § 562A.12(2): All rental deposits shall be held by the landlord for the tenant who is a party to the agreement in a bank or savings and loan association... Interest earned on a rental deposit during the first five years of a tenancy shall be the property of the landlord.

interest in US-IA is governed by Iowa Code § 535.3, § 668.13, § 535.2.