A commercial flooring contractor signs the largest contract in the company’s history in March. By June, revenue is up by a third, the team is working Saturdays, and the owner is sitting at a kitchen table deciding which supplier gets paid late this month. Nothing has gone wrong. No customer has defaulted. The business is profitable on paper. And yet more sales can create more cash flow pressure than they relieve, which is one of the few business problems that gets worse the better you perform.
This is not rare. In the Federal Reserve Banks’ 2025 Report on Employer Firms, drawn from a 2024 survey, 51% of U.S. employer firms named uneven cash flow as a financial challenge in the prior twelve months, and 56% named paying operating expenses. The survey explicitly counts collecting on receivables as part of uneven cash flow, and counts payroll, rent, and inventory as operating expenses. Those are the exact line items that grow first when sales grow.
Every sale is a loan you make before you know it
Think about what actually happens when an order lands. You buy materials. You pay people to do the work. You ship, install, or deliver. Then you invoice. Then you wait.
Each of those steps is a cash outflow, and they all happen before the inflow. The sale does not create cash. The sale creates an obligation to spend cash in exchange for a claim on cash later. For the period in between, you are financing your customer, and you are doing it at zero interest.
That is the part the income statement hides. Sales growth is the only major expense that never appears as a line item on the P&L. The money it consumes shows up on the balance sheet as inventory and receivables, and on the cash-flow statement as a use of cash, but it never gets a row labeled “cost of growing.” So the P&L congratulates you while the bank balance falls.
The cash price of a sale
It helps to put a number on it. Take an illustrative distributor: it pays suppliers in 15 days, holds inventory for about 45 days, and collects from customers in about 45 days. The cash gap is roughly 75 days. Gross margin is 25%.
Now add $100,000 a month in new sales. Monthly cost of goods on that business is $75,000, and the cash gap means about two and a half months of it sits tied up in stock and unpaid invoices at any moment. That is close to $185,000 of cash locked into the new volume. The gross profit it throws off is $25,000 a month, before any overhead.
So the business just bought $185,000 of working capital using a payment stream of $25,000 a month that it also needs for rent, salaries, and software. The order was profitable. It was also, in cash terms, a purchase, and nobody wrote a check for it deliberately.
That ratio is what I’d call the cash price of a sale: the amount of working capital a dollar of new monthly revenue locks up. Until an owner knows that number for their own business, every growth decision is being made with one eye closed.
The scale of the effect, at any size
The arithmetic does not change with company size. In its 2024 annual report, Flowserve disclosed that increases in accounts receivable used $82.2 million of cash during the year, compared with $4.7 million of cash provided by receivables the year before. Fourth-quarter days sales outstanding rose to 74 days from 68.
Six days. That is the entire movement in collection speed, and alongside higher receivables balances it swung cash by tens of millions of dollars. No cost-cutting program at that company would have moved cash that fast in either direction. If six days can do that to a public manufacturer, consider what a quiet slide from 30-day to 45-day collections does to a 20-person firm that just took on a bigger customer.
Three different problems wearing the same mask
Here is where the standard advice fails. Search this topic and you will be told to forecast better, chase invoices, and consider financing. That advice is not wrong, but it treats one symptom as if it has one cause. It has three, and they need opposite responses.
1. A timing gap
The work is profitable, the customers pay eventually, and the business simply spends before it collects. Growth widens the gap in proportion to volume. This is a financing problem and it has a financing solution. Trying to fix it by cutting costs or slowing sales is like treating dehydration with a smaller glass.
The diagnostic question: if every customer paid on the agreed terms, on the agreed day, would the business still run short of cash while growing? If yes, it is timing.
2. A margin problem
The business is winning more work by being cheaper, or by absorbing scope that was never priced, or by serving accounts that consume disproportionate service time. Volume rises, activity rises, retained cash does not. More financing here is accelerant, not medicine. You end up borrowing to fund sales that cannot repay the cost of funding them.
The diagnostic question: has gross margin held steady, by customer and by product line, as revenue has grown? Blended margin lies. It averages the good work with the bad and shows you something stable while the mix rots underneath. This is worth working through properly, because finding the genuinely profitable part of the business usually reveals that growth has been concentrated somewhere else entirely.
3. An operating problem
The third cause is the least discussed and often the most expensive. Volume arrives faster than process maturity. Errors rise. Rework rises. Jobs get delivered late, which delays invoicing, which delays collection. Disputed invoices sit unpaid for months while someone sorts out what was promised. The cash gap widens, but not because of terms. It widens because the business cannot cleanly finish what it sold.
The diagnostic question: has the time from “work complete” to “invoice issued” changed? That single interval is one of the most honest measures of operational strain in a growing company, and almost nobody tracks it. If it has stretched, the constraint is delivery, not finance. Working out which constraint is actually limiting growth matters more here than any funding decision.
A business can have all three at once. The point of separating them is that the correct first move differs completely. Borrowing against a timing gap is sensible. Borrowing against a margin problem is how firms die solvent on paper.
Growth quietly recruits your worst-paying customers
There is a pattern that shows up again and again and rarely gets named. The customers who are easiest to grow into are often the slowest to pay.
Small customers pay cards and deposits. Large customers have procurement departments, purchase order numbers, approval chains, and standard payment terms that are not up for discussion. So the act of scaling tends to shift the revenue mix toward accounts that pay later, by design. The business did not choose worse terms. It chose bigger customers, and worse terms came bundled.
Industry matters enormously here, which is why generic benchmarks for “healthy” collection speed are close to useless. Dun & Bradstreet’s Q4 2024 U.S. accounts receivable report found that only 57.7% of general contractors and builders were paying current, with 28.7% up to 30 days late. Wholesale trade in durable goods looked far better at 76.2% current and 13.5% up to 30 days late. Business services showed 78.5% current, but with 5.5% sitting at 91 days or more past due.
Read that last one carefully, because it describes a different risk shape. In business services the typical customer pays reasonably, but there is a tail of accounts that go deeply, structurally late. The danger is not average slowness. It is concentration: one or two large accounts drifting past 90 days can consume more cash than a quarter of normal operations generates.
The burden is measurable. Intuit QuickBooks’ 2025 Small Business Late Payments Report found that U.S. small businesses with outstanding invoices are owed more than $17,000 each on average. Its Small Business Insights tracking shows 59% of respondents waiting more than 30 days to be paid and 44% reporting cash-flow problems, while 48% say they now request immediate payment on invoices.
One finding in that report deserves more attention than it has received. Businesses more affected by late payments were 1.4 times more likely to have recently raised prices, 30% versus 21%, and their average increase was 16% against 10% for those less affected. Read plainly: firms are recovering the cost of slow payment by charging everyone more. That is an interest charge, passed through to the whole customer base, invisible and unpriced. If you have raised prices in the past year and cannot say how much of the increase was really about collection delays, you are financing your slow payers with your prompt ones.
What speed actually costs
You can buy your way out of a timing gap. The tools are real and they work. What the typical article omits is the price.
BILL, as one visible example of the current market, charges a one-time financing fee between 1.99% and 4.99% per financed invoice, with proceeds arriving in as little as 5 to 10 minutes where the bank account supports instant payments, otherwise by ACH in one to two business days. Its pricing page lists instant transfer at 1.25% with a $1 minimum, faster ACH at $11.99, card acceptance at 2.9%, standard ACH at $0.59, and a mailed check at $1.99.
Those numbers look small. Convert them before you believe that.
The annualized cost of speed
Take the fee, divide by the number of days the payment is accelerated, multiply by 365. That gives you the annual rate you are paying for the money.
A 2% fee to collect 30 days early is roughly 24% a year. A 4.99% fee to pull a payment forward by 45 days is about 40% a year. Card acceptance at 2.9% on an invoice that would otherwise have taken 45 days works out near 24%. Those are credit-card-grade rates, dressed as transaction fees.
Run that test before every acceleration decision and the picture sharpens fast. A 40% annualized cost is absurd as a standing operating habit and perfectly rational as a one-off when it secures a supplier discount, prevents a missed payroll, or lets you accept an order whose gross profit dwarfs the fee.
Two refinements worth knowing. First, the test breaks down at very short horizons. Paying 1.25% to move money two days earlier annualizes to an eye-watering number, but nobody holds that position for a year. For one and two day accelerations, compare the fee against the specific cost avoided, not against an interest rate. Second, watch the fee structure, not just the rate. A flat $11.99 and a 1.25% charge are roughly equivalent on a $1,000 payment. On a $50,000 payment, the percentage fee costs $625 and the flat fee still costs $11.99. Route large amounts onto fixed-fee rails and reserve percentage-based speed for small, urgent items.
The most expensive line of credit is the one nobody applied for
The Intuit data contains an uncomfortable pair of findings: 59% of respondents said more than 25% of total monthly expenses go on credit cards, and 59% said they typically carry a balance from month to month. Seventy-seven percent reported using financing in the past twelve months.
A card balance carried every month is not a payment method. It is a revolving working-capital facility, usually the costliest one available to a small business, acquired without any decision ever being made. If growth has pushed your card balance up and it never comes back down, you have already chosen to finance your cash gap. The only remaining question is whether you want to keep doing it at that price.
When borrowing is the right answer
There is a long-running argument about whether firms should fix collections and margins before borrowing, or borrow early so that growth is not strangled. I come down in a specific place: borrow against a gap you have measured and whose cause you can name.
If the diagnosis is timing, the economics hold, and collections discipline is already in place, financing is the correct tool and waiting is the expensive choice. Turning down a profitable order to protect cash is itself a cost, just one that never shows up anywhere. If the diagnosis is margin or operations, financing buys time at a price while the underlying hole gets deeper, and the eventual reckoning is larger.
The sequencing rule I’d apply: tighten collections first, because it is nearly free, then price the remaining gap, then fund it. Collections discipline is not a substitute for capital, but it is the cheapest capital available, and borrowing to cover a gap that exists mostly because invoices go out late is a bad trade at any rate.
On the financing side, one development has made older advice stale. SBA-backed lending used to be framed as term-loan territory, poorly matched to short-cycle working-capital needs. The SBA launched its 7(a) Working Capital Pilot Program on June 6, 2024, and current SBA materials position it for businesses that want to borrow against accounts receivable or inventory, with lines of credit up to $5 million. The agency has described a transaction-based version that can fund individual projects or orders earlier in the sales cycle, and an asset-based version that lends against assets to help manage cash flow.
Whatever the source, the structure should match the shape of the need. A gap that appears and disappears with order volume wants a revolving line. A permanent step-up in working capital, because the business now operates at a structurally larger scale, is closer to a long-term investment and should be funded like one. Matching short money to long needs is how businesses end up refinancing under pressure.
The forecast that would have caught this a quarter earlier
Almost every growth-driven cash crisis was visible months in advance and simply was not being looked at, because the business forecasts profit and not cash.
The SBA’s own business-plan guidance is blunt about the difference. It tells established businesses seeking financing to include income statements, balance sheets, and cash-flow statements for the last three to five years, and to produce forecasted income statements, balance sheets, cash-flow statements, and capital expenditure budgets, with first-year projections done quarterly or even monthly.
Monthly matters. A quarterly or annual cash forecast will net out the week in which payroll, a supplier run, and a tax payment all land before a large receivable arrives. A monthly projection, built off actual collection behavior rather than stated terms, will show the trough. And a projection that assumes customers pay on the due date is a wish, not a forecast. Use the dates they actually paid last year.
Three things are worth building into that forecast and almost never are:
- The working capital required by each growth scenario, stated as a cash figure, not a sentence of commentary. If the plan is to grow 40%, the plan should say what that growth costs to carry.
- A per-customer collection history, so that bigger accounts can be assessed on their payment behavior as well as their order size.
- The interval between work completed and invoice issued, tracked monthly, as your early warning that operations are straining before the cash shows it.
Before the next push for volume
The instinct to sell more when cash is tight is powerful and often precisely wrong. More volume through an unresolved margin or fulfillment problem produces more of the same problem, faster, and with less room to recover.
Four questions are worth answering before committing to the next growth target. What does a dollar of new monthly revenue lock up in working capital? Has margin held by customer and line, or only in the blended average? How long does it take us to get an invoice out after the work is finished? And would this order still be worth taking at the terms the customer will actually pay on, rather than the ones on the contract?
If the answers are good, fund the growth and move. If they are not, the honest response is to fix the economics first, which usually means being far more selective about what you accept. Declining work on bad terms feels like leaving money on the table. In a cash-constrained business it is often the single highest-return decision available, because the order you refuse is the one you would otherwise have funded out of your own pocket for 75 days at zero interest.
The deeper point is that a business model has a built-in speed limit, set by its margin and its cash gap together. Growing faster than that limit is not ambition. It is an unfunded purchase. Worth understanding how revenue growth differs from profitable growth, and worth testing honestly whether the model can scale before the next contract makes the question urgent.
