Working capital is the cash a business needs to cover its day-to-day operations: the gap between when money goes out (to suppliers, wages, stock, rent) and when it comes in (from customers paying their invoices). Most healthy businesses do not run out of profit. They run out of working capital at the wrong moment. This article explains how to measure working capital, manage it, and finance it when the timing genuinely needs it.
How to measure working capital
The accounting definition is straightforward: current assets minus current liabilities, where "current" means recoverable or payable within twelve months. Cash + receivables + inventory + prepaid expenses, minus payables + short-term debt + accrued expenses + the current portion of long-term debt.
A positive number means your business has enough liquid resources to cover its short-term obligations. A negative number means it does not, at least on paper. But the accounting number is a snapshot, not a movie. It does not tell you whether the cash arrives on the right day relative to when the wages need to leave.
A more useful operational measure is the working capital cycle: roughly, the average time between paying a supplier and being paid by a customer. The longer the cycle, the more cash you need tied up in the business at any given moment to keep operating. A retail business with cash sales and 30-day supplier terms has a negative working capital cycle (customers pay before suppliers need to be paid). A wholesale business with 60-day supplier terms and 90-day customer terms has a 30-day positive cycle: cash is locked up for a month on average.
What good working capital management looks like
Three levers move working capital, and they are within management control more often than people assume.
Receivables. How quickly customers actually pay. The biggest gains usually come from systematic collections (a person whose job is to follow up at day 7, day 14, day 21) rather than from chasing every customer for shorter terms. The savings from reducing average days-to-pay from 60 to 45 are typically bigger than the savings from any single finance facility.
Inventory. How much stock you carry and how quickly it turns. Carrying half the stock at twice the turn rate funds itself; the cost is the operational discipline of more frequent ordering. Industries with stable demand can usually run leaner than they do; industries with volatile demand cannot.
Payables. How quickly you pay suppliers. The cheapest source of working capital is taking your supplier terms in full rather than paying early. Most businesses pay too quickly, often because the finance team has not had the conversation with operations about why the terms exist.
Cash-cycle management is unglamorous and usually under-resourced. Many businesses can free up significant working capital simply by tightening these three areas before any external finance.
Common cash flow timing problems
Even well-managed businesses hit cash flow timing problems. The recurring patterns:
Seasonal swings. Trading-heavy quarters before lighter ones (or the other way round) create predictable timing gaps. Retail in the lead-up to Christmas, hospitality through summer, agriculture pre-harvest.
Growth spurts. Winning a big new contract often means stocking up, hiring up, or fitting out before the revenue arrives. The faster the growth, the bigger the gap.
One-off bills. The ATO instalment, an insurance renewal, a large piece of equipment that needs replacing. Lumpy expenses against smooth revenue.
Customer-payment shifts. A large customer slipping their payment by 14 days creates a meaningful problem if you were not running with a buffer.
For each pattern, the right answer is different: a seasonal swing is often best handled with an overdraft, a growth spurt with a short-term loan, a one-off bill with a quick payment plan, and a customer slip with a sharper collections process.
The main working capital finance options
When the timing genuinely warrants external funding, the main options:
Business overdraft. A facility on your operating account that you draw against as needed and repay automatically when receipts arrive. Cleanest fit for unpredictable cash flow over an ongoing trading period. You only pay interest on what you use.
Unsecured business loan. A lump-sum loan repaid over a defined term, no security required. Faster to arrange than a secured facility, suits one-off funding needs, more expensive in exchange for the speed and simplicity.
Line of credit. A pre-approved limit you can draw on as needed. More flexible than a term loan, more structured than an overdraft, usually from a non-bank lender.
Invoice finance. If the issue is specifically the gap between issuing invoices and being paid for them, invoice finance is structurally cleaner than a general working capital loan. We have a full article on it.
Asset-based lending. For larger businesses with significant receivables and inventory, a revolving facility secured against both can be cheaper than the alternatives.
How to choose
Three questions narrow it down quickly.
Is the funding need one-off or ongoing? One-off needs suit a term loan; ongoing needs suit an overdraft or line of credit.
Is the underlying issue receivables, inventory, or general cash timing? Receivables points at invoice finance; general timing points at overdraft or line of credit.
How quickly do you need it, and how much security can you provide? Speed and no-security shifts you towards unsecured lending; lower cost and willingness to provide security shifts you towards secured.
When external finance is not the right answer
If the operational levers (collections, stock turn, payables) have not been pulled, external finance is usually a more expensive way to solve a problem that internal discipline could fix. If the business is structurally unprofitable, finance papers over the issue and makes it bigger. The brokerage discipline here is the same as in the bridging and invoice finance articles: solve the actual problem, not the symptom.
Where to from here
We compare working capital options (overdraft, unsecured loan, line of credit, invoice finance, asset-based lending) across our whole lender panel. You pay us nothing; the lender pays us a commission when your finance settles. A 20-minute brief is enough to work out which structure fits and what it should cost. Book one through our contact page.
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