- Profit does not mean cash: a company can make a profit and still be unable to pay if it pays its suppliers before its customers pay it.
- The cash conversion cycle, inventory days plus receivables days minus payables days, shows how many days the business funds its operations from its own cash.
- A rolling weekly cash forecast with warning levels agreed in advance gives management weeks to act rather than days.
Why does a profitable company run out of cash?
Profit is what remains of revenue after costs are deducted, whereas cash flow is the movement of cash in and out over a given period. A company can be profitable on paper and still be unable to pay, for instance when it pays its suppliers before its customers pay it. [4]
This happens often during growth: extending credit to customers means new sales do not bring cash in straight away, and extra stock ties up more cash. [4] ACCA calls the extreme version of this overtrading, meaning a level of activity that working capital cannot support, and one of its signs is a growing reliance on short-term finance relative to long-term finance. [2]
What does the statement of cash flows reveal?
IAS 7 classifies cash flows into three categories: operating, from the main revenue-producing activities; investing, from buying and selling long-term assets; and financing, which changes equity and borrowings. [1]
The most useful part for a manager is the indirect method of presenting operating cash flow: it starts from profit and adjusts for non-cash items and changes in accruals and deferrals. [1] That reconciliation answers the question “where did our profit go?” directly, because increases in receivables or inventory appear in it as items that reduce cash.
But the statement looks backwards. An early warning system needs two forward-looking tools: the cash conversion cycle and a weekly cash forecast.
The cash conversion cycle: the indicator that comes before the shortfall
ACCA defines the cash operating cycle, also known as the cash conversion cycle, as the number of days between paying suppliers and receiving cash from sales, calculated as: [2]
Cash conversion cycle = inventory days + receivables days − payables days
The longer the cycle, the more resources are tied up in working capital. [2] Management is balancing two objectives here: liquidity, which protects the ability to pay, and profitability, because cash tied up in working capital earns little or no return. [2]
Hypothetical example: an office equipment supplier
The company’s annual sales are AED 4.38 million, or AED 12,000 a day, and its cost of sales is AED 3.65 million, or AED 10,000 a day. Inventory days are 45, receivables days 90 and payables days 30.
- Conversion cycle: 45 + 90 − 30 = 105 days.
- Inventory: 45 × 10,000 = AED 450,000.
- Receivables: 90 × 12,000 = AED 1,080,000.
- Payables: 30 × 10,000 = AED 300,000.
- Net cash tied up, approximately: AED 1,230,000.
If the company cut receivables days to 75, it would release about AED 180,000 (15 × 12,000), and if it negotiated 45 days with suppliers it would release roughly another AED 150,000 (15 × 10,000), provided it does not lose an early payment discount or supplier goodwill. Better terms alone might remove the need for a short-term loan.
How do you build a weekly cash forecast?
The British Business Bank sums up building a cash flow forecast in four steps: [3]
- Decide the period: at least as long as your cash flow cycle, bearing in mind that longer-range forecasts are less accurate.
- List receipts: for each week or month, with sales recorded when the cash reaches the bank, not when the invoice is raised.
- List payments: for each week or month, then total them.
- Calculate the running balance: each period’s net figure is carried forward to the next.
In practice we suggest a 13-week weekly forecast, a full quarter, rolled forward every week by adding a new week at the end. Update it whenever circumstances change or better estimates become available. [3] Add a line comparing forecast with actual, because a recurring gap is a warning in itself.
A compact template for the forecast rows, with weeks 1 to 13 as the columns:
| Row | Note |
|---|---|
| Opening balance | Actual bank balance at the start of the week |
| Collections from key customers | One row per major customer, based on actual payment behaviour |
| Other collections | Remaining customers and non-operating receipts |
| Payroll | In the week it is actually paid |
| Rent and fixed costs | By due date |
| Supplier payments | By agreed terms |
| Taxes and zakat | In the weeks they fall due |
| Loan instalments | Per the repayment schedule |
| Closing balance | Carried forward as next week’s opening balance |
| Minimum acceptable balance | Sets the warning colour |
To keep the forecast realistic, base receipts on each customer’s actual payment behaviour, not on contract terms. A customer who usually pays after 90 days will not pay after 30 just because the invoice says so.
What are the early warning indicators?
- Rising receivables days
- A major customer paying late
- Growing overdue invoices
- Sales concentrated in one customer
- Supplier payments being deferred
- Payroll and rent becoming difficult
- Large tax payments approaching
- Rising inventory days
- Profits not turning into cash
- Rapid growth in credit sales
- Growing reliance on overdraft
- Rising short-term finance
- Repeated forecast-to-actual gaps
The British Business Bank warns that sustained negative cash flow makes wages, rent and bills harder to pay, and lists changes that can disrupt cash flow: shifts in customer demand, losing a major customer, late or unpaid invoices, changes in stock or raw material prices, and cheaper competitors entering the market. [4] Add one internal indicator of your own: profits in the accounts that are not turning into cash in the bank.
An indicator is useless without a threshold. Set a figure for each one that suits your business, such as a minimum balance expressed in weeks of fixed costs, or a maximum acceptable share of overdue invoices. The British Business Bank suggests holding enough cash to cover all costs for at least a month, ideally longer. [4]
What do you do at each warning level?
Agree with management in advance what each colour means and who acts:
- Green: a short weekly review of the forecast and continued monitoring.
- Amber: daily follow-up on collections, calls to late payers, deferral of non-urgent purchases and a review of stock levels.
- Red: a written plan within days: negotiate with suppliers and lenders, secure funding and prioritise payments so that payroll and statutory obligations are protected.
The earlier amber appears in the forecast, the wider and cheaper the options.
Gulf obligations that must appear in the forecast
Large statutory payments arrive on fixed dates, but those dates differ by country, so never apply one country’s deadline to another:
| Obligation | Country | Deadline |
|---|---|---|
| VAT return and payment | UAE | Within 28 days of the end of the tax period [5] |
| VAT return and payment | Saudi Arabia | Last day of the month following the period, monthly or quarterly [6] |
| Zakat and income tax return and payment | Saudi Arabia | Within 120 days of the financial year end [6] |
Put these amounts into the right weeks of the forecast, and check your tax authority’s official website each year, because authorities sometimes announce specific deadlines for each period.
What do you do when the forecast shows a shortfall?
Do not wait for it to arrive. The British Business Bank lists options including increasing loans or overdrafts, selling unpaid invoices to a third party for immediate cash in exchange for a smaller amount, and selling assets such as equipment and leasing them back. [4] It also stresses the importance of renegotiating with customers, suppliers and lenders in periods of change. [4]
Before borrowing, start with what you already have: overdue invoices to chase, slow-moving stock to convert into cash and payment terms to renegotiate. Funding covers the gap; shortening the cycle closes it.
Conclusion
A cash shortfall is rarely a surprise for a business with an up-to-date weekly forecast. Build a 13-week forecast, monitor the cash conversion cycle and agree warning levels and the response to each in advance, so you have weeks to act rather than days.
Frequently asked questions
What is the difference between profit and cash flow?
Profit is what remains of revenue after costs, while cash flow is the movement of cash in and out over a given period. A business can be profitable yet short of cash, for example when it pays suppliers before customers pay it. [4]
How much cash reserve is enough?
The British Business Bank suggests keeping enough cash to cover all costs for at least a month, ideally longer; each business sets its own level according to how volatile its collections are. [4]
Why 13 weeks for a cash forecast?
Because it covers a full quarter in weekly detail, so payroll, rent and quarterly tax dates all appear in it. What matters is that the period is at least as long as your cash flow cycle and that it is updated regularly. [3]
Do VAT deadlines affect liquidity?
Yes, and they differ by country. In the UAE the return is filed and the tax paid within 28 days of the end of the tax period, while in Saudi Arabia the deadline is the end of the month following the period. [5, 6]
When is a cash shortfall a real danger sign?
When negative cash flow persists, wages, rent and bills become hard to pay, or the forecast shows a shortfall ahead. The British Business Bank also lists losing a major customer and late or unpaid invoices among the changes that can disrupt cash flow. [4]
References
- IFRS Foundation. IAS 7 Statement of Cash Flows
- ACCA. Working capital management
- British Business Bank. How to create a cash flow forecast in 4 steps
- British Business Bank. What is cash flow and how do you manage it?
- Federal Tax Authority, UAE. Filing VAT Returns and Making Payments
- Zakat, Tax and Customs Authority (ZATCA). Zakat Declaration and Tax Returns Calendar (2026)
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