Your retainage is your whole net profit
Add up your retainage receivable. Compare it to your net profit for the year. They're usually about the same number.
At 10% retainage and single digit net margins, everything you earned is sitting in someone else's account waiting on a punch list. Nobody releases that money until the closeout documents are done and the punch list is signed. Closeout discipline is a financial function, and the company that treats it as paperwork waits the longest to get paid.
Three moves, in order
Step 07: Monthly cadence
Weekly bookkeeping, cost to complete, and one CEO report, on the same days every month.
Other problems step 07 solves
Other things that go wrong
What owners ask
How much retainage should a subcontractor hold?
Add up your retainage receivable. Compare it to your net profit for the year. They're usually about the same number. At 10% retainage and single digit net margins, everything you earned is sitting in someone else's account waiting on a punch list. Nobody releases that money until the closeout documents are done and the punch list is signed. Closeout discipline is a financial function, and the company that treats it as paperwork waits the longest to get paid.
Which part of the system fixes this?
The step is number 07, monthly cadence. Weekly bookkeeping, cost to complete, and one CEO report, on the same days every month. It's drawn from chapter 7 of CONTROL: The Construction Financial Operating System.
Is this normal for my trade?
Across the 48 trades in the benchmark reference, net profit at $1M–$5M averages 7% before taxes. If you're well under that and this page describes your month, the two are usually the same story. The published average tells you where the pack sits, and your own job costing tells you where you sit, which is the number that pays payroll.
Where do I start?
Age your retainage the way you age your AR, and assign a person to anything over 90 days past substantial completion.
Can I fix this without touching anything else?
You can try, and it doesn't hold. Step 07 depends on step 03, overhead calculation and step 04, estimating system and step 05, software and bookkeeping alignment and step 06, project management. Install it ahead of those and it produces numbers nobody trusts, which is worse than the problem you started with.
Josh Luebker ran commercial construction projects before he ran the numbers behind them, on data centres, military bases, hospitals, and high-rises. He wrote CONTROL: The Construction Financial Operating System, which is an eight-step framework for commercial subcontractors, and it publishes on October 1, 2026. He is a master electrician who moved into the office and kept the field vocabulary.
Sulphur Prairie Operations LLC maintains the benchmark reference behind these figures. Every edition is reconciled against the newest CFMA survey release before it publishes here. Where a figure changes between editions, the older edition keeps its year in the title so a citation to it stays correct.