Managing cash flow with retainage: a working ledger
Retainage is money you have earned and cannot spend. On a few jobs at once it adds up to a balance that can rival your working capital, and it comes back on the owner's schedule, not yours. Most contractors know the arithmetic of one pay application. Fewer track retainage across the whole company, and fewer still manage it on purpose. This post sets up a simple retainage ledger, prices a common mismatch, and works through the moves that bring the money back sooner. Retainage arithmetic falls under Procurement and Contracting Requirements on the NASCLA Commercial General Building exam, by our reading; try a few in the free check.
Retainage rates, reductions and release deadlines are set by each contract and, on some work, by state law. Nothing here is a rule for your state. The retainage guide covers how a single pay application works.
Keep a retainage ledger
A general contractor has retainage on both sides: the owner holds it from you (a receivable) and you hold it from subs (a payable). Track both by job. An invented ledger:
| Job | Held by owner | Held from subs | Net carried |
|---|---|---|---|
| 1, clinic | $54,000 | $31,000 | $23,000 |
| 2, retail shell | $18,500 | $12,000 | $6,500 |
| 3, warehouse | $72,000 | $48,000 | $24,000 |
| Total | $144,500 | $91,000 | $53,500 |
Check the net two ways: 23,000 + 6,500 + 24,000 = 53,500, and 144,500 - 91,000 = 53,500.
The net is your own money tied up in retainage. Add one more column for the expected release date, and you have a forecast that belongs in your cash plan, not just your pay applications.
Try one question
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Procurement and Contracting Requirements
A subcontractor on a bonded public project has not been paid for completed work. Which bond is meant to protect it?
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Price the mismatch
The net is positive partly because your own work and profit are retained, and partly because the rates may not match. An invented example on a sitework scope:
- The sub's work billed to date: $400,000
- The owner holds 10% on that work: 400,000 x 0.10 = $40,000
- Your subcontract holds 5%: 400,000 x 0.05 = $20,000
- You have paid the sub 400,000 - 20,000 = $380,000 and received 400,000 - 40,000 = $360,000 for that work.
- You are carrying $20,000 of the sub's money. Check: 380,000 - 360,000 = 20,000, and 40,000 - 20,000 = 20,000.
If that $20,000 sits on your line of credit at an invented 8% a year for 12 months, it costs 20,000 x 0.08 = $1,600. Check: 1,600 / 20,000 = 0.08. Small on one scope; real across a company. Matching sub retainage to owner retainage, where the subcontract and the law allow, is the first fix. How payment timing clauses work, and where they are limited, is in pay-if-paid vs pay-when-paid.
Ask for a reduction
Some contracts reduce or stop retainage once the job reaches a stated point, often half complete. An invented $1,200,000 contract at 10%:
- Retainage held at 50%: 600,000 x 0.10 = $60,000
- With no reduction, held at the end: 1,200,000 x 0.10 = $120,000
- If the contract stops retainage at 50%, the second half is paid in full, and $60,000 more comes in during the job. Check: 120,000 - 60,000 = 60,000.
Reductions are usually not automatic. The contract may require a request, the architect's agreement, the surety's consent and a job that is on schedule. Read the clause at award, put the date on your calendar and send the request with the pay application that crosses the line.
Three more ways to speed release
- Release early-finishing trades. A sitework sub done in month 3 of a 14-month job waits 11 months under a hold-to-the-end clause. Some owners will release retainage on a completed scope. Ask, and pass it straight through, which also keeps good subs bidding to you.
- Substitute security. Some states and contracts let a contractor post securities or a bond in place of cash retainage, or require retainage to sit in an interest-bearing escrow. Where that exists, the cost of the substitute is often less than the cost of the cash.
- Close out fast. Most retainage comes back at closeout, and closeout waits on paperwork: the punch list, warranties, record drawings and releases. Collect final lien waivers from subs and suppliers as their work ends, not in the last month.
Use the calculator on every application
The free retainage calculator works retainage held, retainage released and the payment due from work completed and stored materials. Run it on the owner side and the sub side of the same period and the ledger above fills itself in.
Where this sits for the exam
The bulletin lists subject areas only. Retainage, payment terms and liens are, by our reading, part of Procurement and Contracting Requirements, the largest area. Exam arithmetic is usually one pay application: earned to date, retainage, previous payments, amount due. Work it in that order and check it a second way.
Practice the arithmetic
Take the free check. It needs no signup and explains every answer. For the Procurement and Contracting lesson and practice questions with every step worked, see the plans.
Sources
- PSI Candidate Information Bulletin 1458, content outline, updated 7 Jul 2026. Retrieved 5 Nov 2026.
- All figures are invented and were worked twice. Retainage terms vary by contract and state.
FAQ
Is retainage an asset or a liability?
Retainage the owner holds from you is a receivable, an asset. Retainage you hold from subs is a payable, a liability.
Can I hold more retainage from subs than the owner holds from me?
That depends on the subcontract and, in some states, on law. Some states limit how much a contractor may withhold from subs.
When is retainage usually released?
Often at substantial or final completion, after closeout documents are in. Some contracts reduce it partway through or release finished scopes early.
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