Most subs think their cash problem is a sales problem. It isn't. Subcontractor payment terms — the two or three sentences buried in Article 5 of the sub agreement — decide whether you fund payroll from revenue or from a line of credit. You can win every bid you chase and still run dry in month four, because the clause you signed moved the owner's credit risk onto your back.
Ask any sub what single provision controls their cash flow and you'll hear the same answer. It's the payment clause. Everything else is negotiable noise. Delayed and inconsistent payment is the most common recurring complaint in the sub payment process, and it almost always traces back to a specific contract provision that someone signed without a redline.
Here's what each of the three structures actually does to your bank account.
Net 30 is the only term that's actually a term
Net 30 means what it says. You invoice, the clock starts, you get paid in 30 days. The obligation is unconditional. Nothing upstream has to happen first.
Run the math on a $2M sub doing 8% net margin. Under true Net 30 with a monthly pay app cycle, your money is out roughly 45 to 60 days: 30 days of work performed, then 30 days of payment. That's a cash conversion cycle you can plan around. You know your peak funding need. You size your credit line once and stop thinking about it.
The problem is that true Net 30 is rare below the GC tier. What most subs sign is Net 30 with a condition attached — and the condition is the whole game. CFMA's step-by-step cash flow management framework is built on the assumption that you can date your inflows. Conditional terms break that assumption on day one.
Pay-when-paid is a timing clause, not an escape hatch
Pay-when-paid says the GC pays you within a set window after they receive payment from the owner. In most states, courts read this as a reasonable-time provision. The GC eventually owes you the money regardless of whether the owner pays. It shifts when, not whether.
That still costs you real cash. Add the owner's approval cycle to your own and a 30-day term quietly becomes 75 to 90 days of exposure. On a $500K project billed monthly, you're carrying roughly $125K of unfinanced work at peak. Multiply that across four active jobs and you've built a $500K working capital hole nobody put on a budget.
The redline here is short. Cap it. Ask for: "Payment shall be made within seven days of Contractor's receipt of payment from Owner, but in no event later than sixty days after Subcontractor's invoice." That outside date converts an open-ended clause into a forecastable one. Most GCs accept it because it doesn't change their normal-course behavior — it only limits the tail.
Pay-if-paid transfers the owner's credit risk to your payroll
Pay-if-paid is different in kind. It makes the owner's payment a condition precedent to your right to be paid at all. If the owner defaults, the GC owes you nothing. You performed the work, you paid your crew, you bought the material — and the contract says that's your loss.
Read the clause carefully. The magic words are "condition precedent." Courts in most states require that exact phrasing, or something explicit about the sub assuming the risk of owner nonpayment, before they'll enforce it. Some states void pay-if-paid outright. Others enforce it strictly. Your position depends entirely on where the project sits, so this is a conversation with counsel, not a blog post.
What we can say plainly: signing pay-if-paid means you are now underwriting an owner you never met and cannot audit. That's a credit decision. Price it or refuse it.
Three redlines, in order of preference:
- Strike it. Replace with pay-when-paid plus an outside date.
- Carve out your risk. Add: "This provision shall not apply to nonpayment resulting from Contractor's default, Contractor's failure to pursue payment, or amounts withheld for reasons unrelated to Subcontractor's work."
- Buy information. If it stays, require the GC to provide the owner's funding commitment and monthly payment status, plus your right to file a lien or bond claim unimpaired.
Never sign a pay-if-paid clause that also waives lien rights. That combination leaves you with no remedy at all.
Retainage compounds whichever clause you signed
Ten per cent retainage on a $2M year is $200K sitting on someone else's balance sheet, often for a year past substantial completion. Layer that on a pay-if-paid clause and your realistic collection horizon on the last dollar stretches well past 400 days.
The AICPA construction contractors audit and accounting guide treats retainage as a distinct receivable for a reason — it behaves nothing like current AR. Track it separately in your job costing reporting or you will overstate your available cash every month. QuickBooks' primer on construction accounting covers the mechanics of setting that up correctly.
Forecast the clause, not the contract value
Once you know which structure governs each job, you can model the gap. Procore's guide to construction cash flow projection walks the mechanics: map billing dates, apply the real collection lag per contract, and stack the curves.
Do it by clause type. Tag every active job as Net 30, pay-when-paid, or pay-if-paid, then apply 45, 80, and 100-plus day lags respectively. The output is your true peak funding requirement. CFMA's work on the benefits of construction cash flow forecasting makes the case better than we can: contractors who forecast weekly negotiate from strength, because they know exactly what a bad clause costs before they sign it.
That's the practical work behind cash gap forecasting. Model it in the scenario planner — push one $800K job from pay-when-paid to pay-if-paid and watch the credit line requirement move. The number usually ends the debate about whether the redline is worth the awkward call.
The takeaway
Your subcontractor payment terms are a financing decision disguised as legal boilerplate. Net 30 is fundable. Pay-when-paid is fundable if you cap it. Pay-if-paid is an unsecured loan to a stranger, and it belongs in your bid price or in the shredder.
Before the next contract goes back signed: find the clause, name the structure, apply the real lag to your cash flow model, and send one redline. For deeper background, the CFMA financial management reference guide is the standard, and our construction cash flow guide and construction finance hub cover the surrounding mechanics — including how progress billing cadence and project profitability tracking change the answer.
One clause, one email, one number you can finally plan around.
