A construction company can be profitable on paper and broke by Thursday. The estimate was right, the margin is real, and the money is still parked between a signed pay application and a check that arrives in forty days. Construction is an industry where winning more work makes the cash position worse before it makes anything better, and financing that ignores that rhythm tends to fail at the worst possible week.
This guide is built around the way construction actually pays: draw schedules, retainage, pay-when-paid clauses, and the stretch between mobilization and the first draw. The options below are mapped to those mechanics, with worked numbers, because generic business-loan advice does not survive contact with a pay app cycle.
Why the draw schedule creates the gap
Most commercial work bills monthly. You submit a pay application for work completed, the owner or general contractor reviews it, approval takes days or weeks, and the contract then allows a payment window after approval. Stack those stages together and labor you paid for in the first week of March routinely comes back to you in May. That is the ordinary timeline, the one where everything goes right.
Meanwhile your own obligations run on faster clocks. Payroll is weekly, and certified on some jobs. Suppliers want net-30, and many want deposits before ordered materials ship. Your own subcontractors expect payment on their schedule, not the owner's. A pay-when-paid clause pushes the GC's collection risk down onto you, so one slow owner upstream can stall a month of your receivables, a situation with its own playbook in what to do when a customer will not pay.
Retainage: profit you have earned but cannot spend
On top of the draw lag, most contracts hold back a portion of every approved draw as retainage, released only at substantial completion or final closeout. On a thin-margin job, the retainage pool and your profit can be nearly the same money, which means the entire reward for the project arrives months after its last cost, assuming closeout goes smoothly.
Two practical consequences follow. First, retainage should not sit in your operating cash forecast until the release conditions are actually met, because punch lists and closeout disputes delay it routinely. Second, retainage is hard to borrow against: most receivable-based funders discount it heavily or exclude it outright, precisely because its release depends on future performance rather than work already accepted.
The real math of fronting a job
Take a $400,000 contract running five months. Mobilization, insurance certificates and a materials deposit put $60,000 out the door before the first crew day. Labor and equipment burn $18,000 a week from there. You bill your first draw at the end of month one for $85,000; review, approval and the contractual payment window mean it lands around day 55. By that day you have spent roughly $132,000 against nothing collected. That is the deepest point of the curve for one job, and every overlapping project adds its own curve on top of it.
The point of the arithmetic is sizing, not fear. The financing question is never really "what can I get": it is "how deep does the hole go, and in which week does it start refilling". Map it before you price the next job; the cash flow gap calculator does the week-by-week math in a few minutes and hands you both numbers.
Funding options mapped to the draw cycle
A line of credit: the structural fit
A revolving line mirrors the draw cycle: draw against it to cover payroll mid-cycle, sweep it down when the pay app funds, repeat next month. The friction is timing. Lines underwrite best when your statements look strong, which usually means between jobs, not in the middle of one, so the best moment to arrange one is precisely when you feel you do not need it. The structural differences from a lump-sum loan are laid out in line of credit vs term loan.
Receivable funding: a pay app is not an ordinary invoice
Invoice factoring converts receivables into immediate cash, but construction receivables are their own animal. A progress billing can be offset by backcharges, revised by a change order, or stalled by a pay-when-paid clause, so many generalist factors avoid construction entirely, and the specialists who remain price the complexity in. Expect deeper verification, a lower advance against each billing, and real questions about your contract terms. Factoring can still fit subcontractors with creditworthy GCs and clean pay app histories; it rarely fits retainage or disputed work.
Short-term advances: a bridge, priced like a bridge
Revenue-based advances fund fast against your deposit history: no pay app verification, no owner sign-off. The trade-offs are cost, quoted as a factor rate rather than an interest rate, and a repayment rhythm you must respect. Most advances remit daily or weekly by ACH, and a fixed debit does not know that your next draw is three weeks out. Used as a short bridge into a known draw date, with the payment tested against your between-draw weeks, an advance can do honest work. Used to paper over a job that was priced wrong, it compounds the problem at a premium.
Equipment financing: keep the iron off your working capital
Excavators, skid steers and trucks are better financed against their own working lives than bought out of the cash that makes payroll. Equipment lenders like titled, resellable machines, terms run in years instead of months, and the machine itself secures the debt, which keeps the rest of your borrowing capacity free for the draw gap. Whether to buy or lease is its own decision, worked through in equipment financing vs leasing.
What underwriters see in a contractor's bank statements
A contractor's statements confuse funders who do not know the industry: enormous deposits followed by silence, balances that spike and crater, sometimes a negative day in the week before a draw lands. An underwriter who reads that pattern as instability prices it as instability, and the offer shrinks accordingly.
The fix is context. A schedule of values, a contract pipeline, a receivables aging showing who owes what and when, and a short note explaining the draw calendar turn the same statements into a legible story about timing rather than trouble. Funders also search public filings before funding anything: a UCC-1 filing from an earlier advance or a factor is visible to everyone, and an undisclosed position ends deals faster than weak deposits do. Walk in with the file already assembled; the document checklist covers exactly what to gather.
Borrowing mid-project without hurting the next bid
Two questions are worth answering before signing anything mid-project. First, can the payment survive your worst between-draw week? Test the proposed debit against those weeks in the affordability checker, not against the week a draw funds, because the debit does not pause for the pay app cycle.
Second, what does the encumbrance do downstream? Sureties review liens when they size bonding capacity, and a blanket filing that surprises your bonding agent can cost more future capacity than the advance was worth. The mechanics are covered in what a UCC lien affects. If bonded work is where your company is headed, that conversation happens before funding, not after.
Price the gap before you price the job
The cheapest financing decision in construction is made in the estimate. A schedule of values front-loaded toward mobilization, deposits negotiated on materials, and draw language you can actually cash-flow are worth more than any funder's terms, because they shrink the gap instead of renting money to fill it.
For the gap that remains, know your number before you need it. The funding estimator turns revenue, time in business and industry into an estimated range in about a minute. Exploring options through ClickFundBiz costs nothing, reviewing them does not involve a hard credit inquiry unless a specific provider requires one with your separate consent, and providers decide approvals and terms independently. Estimates are estimates; the goal is bidding the next job knowing exactly how you will carry it.
Frequently asked questions
Can I get funding while I am waiting on a draw payment?
Often yes, and the draw itself can strengthen the file: an approved pay application with a payment date is evidence of near-term cash, and some funders will bridge specifically toward it. Expect the funder to weigh your deposit history and existing obligations more heavily than the draw paperwork. The structural caution is repayment timing: a daily or weekly debit starts immediately, so the payment has to clear your between-draw weeks, not just the week the money lands.
Does invoice factoring work with progress billings?
Sometimes, through factors who specialize in construction. Generalists usually decline progress billings because backcharges, change orders and pay-when-paid clauses can shrink an approved billing after the fact. The specialists verify more deeply, advance a lower share of each billing, and want creditworthy GCs upstream. Retainage is generally excluded. If your receivables are clean monthly billings to solid GCs, factoring is worth pricing; if your work is heavily disputed, it usually is not.
Will taking an advance hurt my bonding capacity?
It can affect it, because sureties review your obligations and public lien filings when they size bonding lines, and most advances file a blanket UCC against business assets. That does not make advances and bonding incompatible; it makes sequencing and disclosure matter. If bonded work is central to your business, talk to your bonding agent before taking on new obligations, and make sure any filing is released promptly once an advance is satisfied.
What do funders think of pay-when-paid contracts?
Receivable-based funders care a great deal, because the clause means your right to payment depends on a party they never underwrote: the owner above your GC. Expect a factor to read the contract, not just the invoice. Deposit-based funders care less about the clause and more about what your bank statements already show, which is one reason advances are often the faster route for subcontractors working under messy upstream terms.