Retainage in Construction: What It Is and How to Manage It
Retainage, also called retention, is typically 5-10% of each construction progress payment withheld until the work reaches an agreed stage of completion. Owners withhold it from general contractors, who may also withhold it from subcontractors. It helps ensure the work is finished properly, and any defects are fixed before the remaining payment is released.
The contract sets every term that matters: the percentage, the calculation method, the release milestone, and the documents required for payment. Read those terms closely, because a vague retainage clause is where billing disputes begin.
How Retainage Works
Retainage accumulates across every progress payment, then releases in a lump sum or in stages near the end of the job. Each billing cycle, the paying party subtracts the retainage percentage before cutting the check. Those withheld slices pool into a growing balance over the life of the project.
Example: An owner approves a $40,000 progress payment and withholds 5% as retainage. The contractor receives $38,000, while the owner holds the remaining $2,000. Each payment adds to the retained balance until it is reduced or released under the contract terms. Retainage also affects subcontractor management because general contractors may withhold the same percentage from subcontractor payments and often release it only after receiving payment from the owner.
How to Calculate Retainage
Retainage amount = Approved eligible payment amount × Retainage rate
Approved payment | Retainage rate | Amount held | Amount paid |
|---|---|---|---|
$40,000 | 5% | $2,000 | $38,000 |
$40,000 | 10% | $4,000 | $36,000 |
Five $40,000 payment applications at a 5% rate would create a cumulative retained balance of $10,000 before any reduction or release.
Some contracts step the rate down partway through the job. A common structure withholds 10% during early phases, then drops to 5% once the project passes 50% completion. The graduated approach balances owner protection against contractor cash flow.
When Retainage Gets Released
Release starts at substantial completion and finishes once the punch list, final inspections, and lien waivers clear. Substantial completion means the owner can occupy and use the structure for its intended purpose, even with minor items outstanding. AIA Document G704 certifies that date.
An owner or general contractor may require the following before approving final release:
- Completed punch-list work
- Final inspection or acceptance
- As-built drawings
- Warranties and operations manuals
- Final lien waivers or releases
- Confirmation that the contractor settled project debts and claims
- Surety consent when the project requires it
- Other closeout documents named in the contract
State laws and public-project rules may also cap retainage or establish payment deadlines. Federal fixed-price construction rules, for example, allow a contracting officer to hold up to 10% when progress remains unsatisfactory and call for a reduction once the project reaches substantial completion.
Retention vs. Retainage vs. Construction Holdback
The three terms describe the same mechanism under different labels. "Retainage" is the standard US usage. "Retention" is the UK and Commonwealth term, and some US accounting departments use it as well. "Holdback" dominates in Canada, where provincial lien statutes often mandate a 10% statutory holdback.
A few related terms include:
Term | Meaning |
|---|---|
Progress payment | A periodic payment for work completed during a billing period |
Schedule of values | An itemized allocation of the contract sum used to support payment applications |
Substantial completion | The stage at which the owner can use the project for its intended purpose, although minor work may remain |
Retainage receivable | The withheld amount a contractor is owed, recorded as an asset until release |
Retainage payable | The withheld amount a paying party owes back, recorded as a liability until release |
What a Retainage Clause Should Define
Clear terms for retainage in construction contracts help avoid confusion over how much is withheld, when it is released, and who approves it.
The clause should define:
- The retainage rate and calculation base
- Any excluded costs or variable rates
- When the rate decreases
- The milestone that triggers release
- Documents required for approval, detailed under release conditions above
- The person responsible for approval
- The payment deadline after approval
- How the terms apply to subcontractors
- Any governing legal requirements
Best Practices for Managing Retainage
Treat retainage as tracked money with a named owner, not a number that sorts itself out at closeout. These six habits keep releases on schedule:
- Write specific contract terms. Fix the percentage, start point, release milestones, and required documents before work begins.
- Calculate on every pay application. Apply the rate each cycle so the running balance stays accurate.
- Track retainage as part of how you track construction project costs from standard receivables and payables, broken out by project and by subcontractor.
- Manage closeout documents early. Assemble lien waivers, warranties, and as-builts before the final pay application, not after.
- Assign approval ownership. Name who signs off on each release so nothing stalls between field operations and finance.
- Keep release status visible. Know which balances are pending, cleared, or blocked across the whole portfolio.
Visibility into the balance matters more than the rate withheld. It sits on the books as earned revenue you can't spend, and a contractor who can't forecast its release can't plan payroll, bids, or growth around it.
Quickbase Project Hub gives that visibility: track balances, documents, approvals, and release milestones in one place, so retainage moves from a guess to a line you can plan against.
Frequently Asked Questions
What is retainage in construction?
Retainage is a percentage of each construction payment withheld by the paying party until the contractor meets agreed conditions, usually substantial or final completion.
What is the typical retainage percentage?
Most contracts set retainage between 5% and 10% of each progress payment. Federal projects cap it at 10%, and several states cap private contracts at 5%.
When is retainage paid?
Release begins at substantial completion and finishes once the punch list, final inspections, and lien waivers clear. Full payment typically arrives 20 to 60 days after final completion, though the contract or state law governing the project can extend that window.
What is retainage in accounting?
The contractor records the withheld amount as retainage receivable, an asset. The paying party records it as retainage payable, a liability. The same dollar amount appears on both balance sheets.
What is the difference between retention and retainage?
The two words describe the same practice. "Retainage" is the standard US term, "retention" is common in the UK.
What is a construction holdback?
A construction holdback is money withheld from a contractor's progress payments until agreed work is complete. It is another term for retainage or retention and is typically released once the required project conditions are met.
