Illinois
For Illinois, public project retainage cap (%) is 10% before 50% complete; 5% after 50% complete; private project retainage cap (%) is 10% before 50% complete; 5% after 50% complete; release deadline is not specified in this section; escrow required is no; milestone reduction is at 50% completion, retainage reduced to no more than 5%, recorded from its source on 2026-08-17.
- State
- Illinois
- Public project retainage cap (%)
- 10% before 50% complete; 5% after 50% complete
- Private project retainage cap (%)
- 10% before 50% complete; 5% after 50% complete
- Release deadline
- not specified in this section
- Escrow required
- no verified
- Milestone reduction
- at 50% completion, retainage reduced to no more than 5% verified
- Statutory citation
- 815 ILCS 603/20 our reading
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
A construction contract may provide for the withholding of retainage of up to 10% of any payment made prior to the completion of 50% of the contract. When a contract is 50% complete, retainage withheld shall be reduced so that no more than 5% is held. After the contract is 50% complete, no more than 5% of the amount of any subsequent payments made under the contract may be held as retainage.
— ilga.gov, retrieved 2026-08-17
Source
- ilga.govhttps://www.ilga.gov/legislation/ilcs/fulltext.asp?DocName=081506030K20