Retainage is a percentage of each payment on a construction contract that the owner or general contractor withholds until the work is satisfactorily completed. Rather than paying a contractor or subcontractor the full amount of each invoice as work progresses, a portion is held back as security that the job will actually be finished to the required standard.
EXAMPLE
A subcontractor submits a pay application for $80,000 of completed work on a contract with 10% retainage.
Payment due = $80,000 × (1 − 0.10) = $72,000.
The remaining $8,000 accumulates as retainage, to be paid out later once the retainage release conditions are met.
Retainage gives the owner or general contractor leverage to ensure a contractor completes the work correctly, including fixing defects and completing punch list items, rather than walking away once the bulk of the payment has been collected. It functions as a form of security held throughout the project rather than a separate bond or deposit.
From the contractor's side, retainage represents real cash tied up in a project for months, sometimes the entire project duration, which is why it is a significant working capital consideration for subcontractors managing multiple jobs simultaneously.
5% and 10% are the most common rates, though the specific percentage is a matter of contract negotiation and varies by project type, project size, and regional practice. Some contracts reduce the retainage rate partway through a project, for example dropping from 10% to 5% once the project reaches 50% completion, to help contractor cash flow on longer jobs without eliminating the owner's security entirely.
Many states have retainage laws that cap the maximum percentage that can be withheld, particularly on public projects, and set requirements for when retainage must be released. These laws vary meaningfully by state, so the applicable rate and release timeline depend on the project's specific jurisdiction and whether it is public or private work.
Both are typically tracked separately from standard accounts payable and accounts receivable, since the timing of when retainage actually becomes due is governed by project milestones rather than standard invoice payment terms.
For a general contractor managing many subcontractors, tracking retainage accurately means knowing, for every subcontractor and every pay application, how much has been withheld to date and under what conditions it becomes due. This is a different tracking requirement than standard AP, where an invoice is simply open or paid; retainage sits in a third state, withheld but not yet due, for an extended period.
Getting this wrong in either direction causes real problems: releasing retainage before completion conditions are actually met removes the leverage it exists to provide, while failing to release it once conditions are met is a common source of subcontractor disputes and, in some states, exposes the paying party to statutory penalties for late retainage release.
