Reference Source

Iowa

For Iowa, public project retainage cap (%) is 5%; private project retainage cap (%) is no statutory cap in this section; release deadline is per section 573.14; escrow required is no; milestone reduction is none, recorded from its source on 2026-08-17.

State
Iowa
Public project retainage cap (%)
5%
Private project retainage cap (%)
no statutory cap in this section
Release deadline
per section 573.14
Escrow required
no
Milestone reduction
none
Statutory citation
Iowa Code § 573.12 our reading
Sourcelegis.iowa.gov
Verified
Review by
DatasetConstruction retainage limits by US state — maximum withholding percentages, release deadlines, escrow requirements, and public vs private distinctions with statutory citations

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

The public corporation shall retain from each monthly payment not more than five percent of that amount which is determined to be due according to the estimate of the architect or engineer.

legis.iowa.gov, retrieved 2026-08-17

Source

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