Retainage & Withholding Risk Checker in Illinois Construction Contracts
Retainage is money withheld from every progress payment (typically 5–10%) until final completion. Excessive or slow-released retainage strangles subcontractor cash flow — many states now cap retainage by statute.
10% cap, statutory reduction to 5% at 50% completion on qualifying projects.
Illinois Contractor Prompt Payment Act, 815 ILCS 603/10 — 10% retainage cap, 10% at 50% completion reduction
Typical exposure per project when a Retainage clause slips into a signed contract.
Illinois mandates retainage step-down at 50% completion — build this into your billing cycle.
The IL Prompt Payment Act gives you a statutory right to a step-down at 50% — don't sign it away.
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Vowpace's AI extracts retainage & withholding language, redlines it against safer alternatives, and generates an audit-grade evidence report — free for your first scan.
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The clause we flag — and the one we help you write instead.
“Contractor may withhold ten percent (10%) of each progress payment as retainage, to be released in full only upon Contractor's receipt of final payment and closeout of all subcontracts on the Project.”
“Contractor shall withhold five percent (5%) of each progress payment as retainage. Retainage shall be reduced to two and one-half percent (2.5%) upon fifty percent (50%) completion. Subcontractor's retainage shall be released within thirty (30) days of Subcontractor's substantial completion of its scope, independent of other subcontracts on the Project.”
- 1Push for early retainage reduction at 50% completion.
- 2Separate your retainage release from other subs — don't be held hostage to a slow-poke.
- 3Verify state statutory retainage caps — public projects often have stricter limits.
Scan your Illinois contract for Retainage traps — free.
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