A bill for an act relating to retention of fees for public improvement contracts.

SF 431 modifies Iowa's rules for handling retention funds in public construction projects. It requires public entities to release retention funds (held back from contractor payments) under two conditions: (1) if a contractor provides a bond double the claim amount within 20 days, or (2) if a claimant fails to sue within 30 days of a contractor's written demand. The bill also allows contractors to substitute retention funds with a 5% bond, triggering immediate release of held funds. Interest accrues on delayed payments at rates tied to state interest rules, and courts may award attorney fees for successful claims. This directly affects contractors, public entities, and claimants in public construction contracts.