A business can report a profit and still miss payroll or a supplier payment. Profit records revenue and expenses for an accounting period, while bills must be settled with cash. Long customer payment terms, unsold stock and rapid growth can therefore leave a successful company short of money.
The apparent contradiction comes from timing. A sale may count towards profit before the customer pays. Some cash payments, meanwhile, do not reduce profit by the same amount at the same time.
This is why managers need to examine both the income statement and the cash-flow statement. They answer different questions.
Profit and cash follow different clocks
Profit is the amount left after recognised expenses are deducted from recognised revenue. Cash flow records money entering and leaving the business during a period.
Under accrual accounting, a company generally records revenue when it has earned it, rather than waiting until payment reaches its bank account. The precise point depends on what the company has promised to deliver and when that obligation has been satisfied.
Consider a manufacturer that delivers goods worth $100,000 and gives the customer 60 days to pay. Once the sale qualifies for recognition, it can appear in revenue and contribute to profit. The unpaid amount appears on the balance sheet as accounts receivable, meaning money owed by customers.
The manufacturer may already have paid for materials, energy and labour. Its next payroll and tax bills will also fall due before the customer settles the invoice.
The sale is real and the customer may be perfectly reliable. The cash is simply not available yet. As the British Business Bank explains, an otherwise profitable company can face a severe short-term shortage after paying the costs of providing goods or services while it waits for a customer to pay.
This gap is part of working-capital management. Working capital is the difference between current assets, such as cash, stock and customer receivables, and current liabilities, such as bills due to suppliers.
Managers often track the cash conversion cycle. It adds the average time stock is held to the average time customers take to pay, then subtracts the time the business takes to pay its suppliers. A longer cycle usually means cash remains tied up in operations for longer.
Shorter is not automatically better. A retailer needs enough stock to serve customers, and offering credit may help a supplier win business. Cutting either too far can damage sales.
A 2026 study of EU-based small and medium-sized companies examined data from 2012 to 2022 and reported an inverted U-shaped association between working-capital investment and profitability. Performance was weaker when companies held too little or too much, while the estimated best level was lower for smaller and more financially constrained businesses.
The study was observational, so it does not establish a universal target for every company. Its result supports a more careful point: working capital has costs and benefits, and the balance depends on the business.
Growth and late payment can consume cash
Fast growth can widen the timing gap. If the manufacturer receives twice as many orders, it may need twice as much material, more production hours and additional transport before the extra customer payments arrive.
Receivables and stock can therefore rise at the same time as revenue. Both are assets, but neither can pay wages until they turn into cash. Increasing amounts owed to suppliers can provide temporary breathing room, although those invoices will eventually have to be settled.
Late payment makes the problem less predictable. UK government research based on 300 telephone interviews in January 2024 found that 36% of surveyed businesses said customers usually paid later than their contractual terms. The proportion was 49% among small businesses. Forty per cent cited customers who had themselves been paid late as a reason for delayed payments, showing how a shortage can move along a supply chain.
The relatively small survey covered five broad sector groups, so its percentages should not be treated as estimates for every UK business. A larger official survey nevertheless shows how common the exposure is. In the 2024 Longitudinal Small Business Survey, 47% of SME employers said they offered trade credit. Of those businesses, 57% considered late payment a problem.
The UK government has responded with proposed legislation. The Commercial Payments Bill, introduced to Parliament in May 2026, includes a 60-day maximum payment term with limited exemptions, mandatory interest on late payments and stronger enforcement powers for the Small Business Commissioner. These measures remain subject to the parliamentary process and are not retrospective.
Customer payments are only one source of pressure. Capital expenditure can produce a large cash outflow when a company buys machinery, even though the asset’s cost is normally spread through the accounts over several years as depreciation. Loan principal also consumes cash but is not an expense on the income statement. Interest is treated separately as an expense.
A company can consequently produce an accounting profit while spending cash on stock, equipment and debt repayment faster than customers replenish it.
What managers should watch in the accounts
The first useful comparison is net profit against cash generated from operations. One weak quarter may reflect normal payment timing, but a repeated pattern of rising profit and falling operating cash deserves attention.
The explanation may appear in the balance sheet. Receivables rising much faster than sales can indicate slower collection. A sharp increase in stock can show that more cash is sitting in warehouses. Falling supplier balances may mean the company is paying suppliers faster, which is welcome for suppliers but uses cash sooner.
None of those movements proves that a company is in trouble. A growing order book may justify more stock, and a new customer contract may explain higher receivables. Managers need to connect the numbers with what is happening inside the business.
A cash-flow forecast makes that connection by placing expected receipts and payments on the dates when cash should actually move. The British Business Bank recommends entering customer payments when invoices are expected to be settled rather than when sales are made.
A forecast may show that a profitable December will be preceded by a shortage in October, when stock has to be purchased. That gives the company time to chase invoices, negotiate payment dates, reduce slow-moving stock or arrange suitable finance.
Borrowing can bridge a timing gap, but it adds interest, fees and repayment obligations. It cannot indefinitely repair an operation that persistently fails to generate cash.
The practical warning sign is not profit by itself. It is profit rising while receivables and stock absorb cash, operating cash flow weakens and major payments approach. By the time the bank balance reaches zero, the income statement may still look reassuring.
