The cash conversion cycle: Where is your business’s money stuck?
Updated: 9 hours ago
The cash conversion cycle measures the time between paying for trading inputs and collecting the customer cash those inputs produce.
A busy Australian business can have money moving through the warehouse, workshop and sales ledger without much reaching its bank account. Finding the slowest stage can be more useful than immediately seeking a larger facility.
This guide uses the cycle as a diagnostic tool. It complements the broader explanation of how much working capital a business needs, because an average number of days does not tell you the size or exact date of the next cash shortfall.
The short answer
Measure stock holding, customer collection and supplier payment periods using consistent records.
Separate agreed payment terms from the time customers actually take to pay.
Investigate the stage tying up cash before choosing a funding response.
Check the forecast as well as the averages, especially during growth or seasonal peaks.
How does the cash conversion cycle work?
A common analytical formula is inventory days plus receivable days minus payable days. Inventory days estimates how long stock sits before sale. Receivable days estimates how long credit sales remain uncollected. Payable days estimates how long the business takes to pay its trade suppliers.
For a simplified illustration, 50 stock days plus 35 customer collection days minus 25 supplier payment days produces a 60-day cycle. The business is financing the gap between those outgoing and incoming payments.
Calculate the components on comparable periods and appropriate bases. Stock days normally uses average inventory and cost of sales, while receivable days uses relevant credit sales. Your accountant can check the denominator, GST treatment and distortions from unusual balances. Mixing total sales with a credit-only debtor book can produce a misleading result.
The formula is most intuitive for a stockholding business. A consultancy with little inventory should focus on unbilled work, billing approval and collections rather than inventing a stock measure. The profit versus cash flow guide explains why revenue and available money can move differently.
Start with the stage before the invoice
Stock can absorb money long before a customer becomes a debtor. Supplier deposits, production, shipping and storage all affect the time between an order and a collected sale. A finished-goods report may miss raw materials or work still being manufactured.
The government’s inventory management guidance distinguishes stock at different production stages. Use that distinction to ask where money is waiting, then investigate quantities and purchasing decisions behind the balance.
An average can conceal a small number of expensive items. Review ageing by product line and identify goods that have not sold, items committed to specific customer orders and stock needed to maintain service. A slow specialist component can have a different commercial role from an obsolete product that keeps being reordered.
Cutting every stock line equally may damage delivery performance. The useful decision is which purchasing or production change releases cash while preserving the sales and service the business depends on.
Collection days begin with an effective invoice
An invoice dated today may not enter the customer’s payment process today. Missing purchase order numbers, incomplete delivery evidence or an unapproved timesheet can leave the invoice waiting for correction. Those administrative days are part of the practical funding gap.
Compare three dates: completion of supply, acceptance of a correct invoice and receipt of cleared funds. Then ask whether the delay is contractual, administrative, disputed or simply habitual. Each cause calls for a different response.
The government’s payment terms guidance explains setting expectations for how and when customers pay. Clear terms help, but your forecast should use realistic collection behaviour. A customer who consistently pays after 45 days should not be treated as a 30-day receipt merely because the invoice says so.
Review the largest balances individually. Improving a small overdue account may help less than resolving one missing approval on a substantial invoice. Assign responsibility for that approval and record the next action date.
Supplier days are a relationship decision
Longer agreed supplier terms can shorten the funded gap. Paying late without agreement is a different matter and may jeopardise supply, discounts or the relationship. Check the contract before assuming you can change the outgoing date.
A supplier may accept staged deliveries, a smaller initial order or payment linked to dispatch. Those changes can be more useful than a longer term on stock you do not need. Compare the full commercial outcome, including price, delivery reliability and any costs of the arrangement.
The cash flow improvements guide covers operational changes before borrowing. For this analysis, quantify how a proposed supplier change moves the low point in the forecast instead of treating every extra day as equally valuable.
A worked example: One cycle, two useful changes
Consider a hypothetical wholesaler with a 60-day cycle. It sells established products on credit and purchases replacement stock before collecting previous sales. Assume its relevant trading outlays average $2,000 a day. A rough timing estimate is therefore $120,000 tied up across the cycle.
That is an illustration, not a facility recommendation. It ignores uneven deliveries, tax, fixed overheads and the distinction between sales value and costs. A proper cash forecast remains necessary.
Suppose better ordering reduces stock days by eight and correcting invoice approval problems reduces collection days by seven. All else equal, the cycle falls to 45 days. At the assumed daily outlay, the rough amount tied up falls by $30,000.
The cash does not necessarily arrive as one immediate $30,000 deposit. Existing stock must sell, orders must change and invoices must clear. Record the transition rather than counting the whole improvement on the day management approves the plan.
What does the cycle tell you about finance?
A repeatable collection gap may support investigating a facility designed around trading receipts. A permanent increase in stock and debtor balances raises a separate question about the business’s ongoing capital base. The finance structure comparison explains the difference between a scheduled loan and revolving access.
Neither choice fixes stock with no realistic buyer or an invoice the customer disputes. Establish the expected source of repayment and include financing costs and payment dates in the model. If the operating cycle cannot produce enough cash after costs, a shorter collection assumption will not make the problem disappear.
Use the 13-week forecast guide to translate averages into actual dates. The government’s cash flow statement guidance provides a further reference for forecasting incoming and outgoing payments.
Questions to take to your next review
Which product or customer accounts for the largest amount tied up?
What records support the collection and delivery assumptions?
Which change can management implement first, and when will cash improve?
Does the proposed funding remain affordable if the improvement takes longer?
Frequently asked questions
Is a shorter cycle always better?
Not automatically. Extremely low stock can cause missed sales, while rushed collection changes may conflict with agreed terms. Assess the commercial consequences alongside the cash benefit.
Can a business have a negative cycle?
Yes. A business collecting customer money before paying suppliers can have a negative analytical cycle. It still needs cash for refunds, payroll, overheads and other obligations.
Is the cycle the same as working capital?
No. The cycle describes timing in days. Working capital is a balance-sheet measure, while a funding forecast tests the actual amount and timing of cash required.
How often should owners review it?
Choose a rhythm that fits trading activity. Review it alongside management accounts and examine major stock or debtor changes sooner when those changes affect upcoming payments.
Turn the number into an operating decision
The useful result is a specific change with an owner, implementation date and forecast cash effect. Ask your accountant to reconcile the measures, then discuss any remaining funding gap with your finance broker using realistic trading dates. Keep the original assumptions so the next review can distinguish a genuine improvement from a change in calculation method.
Planning Your Business Cash Flow?
Fairlane Finance can help you assess possible funding structures against your business’s cash-flow timing.
General information only. This article does not constitute financial, credit, legal, tax, accounting, compliance or valuation advice. Finance is subject to lender approval, eligibility criteria, terms, fees and conditions. Consider obtaining independent professional advice for your circumstances before acting.
