1. Why Do Most Business Owners Look Only at Profit?
The profit and loss statement is the report business owners are most accustomed to reading. See 'net profit of 500,000 this month' each month, and they assume the business is healthy and ready to expand.
But profit is an accounting concept. It records accrued revenue—once the customer signs the contract, revenue is booked, whether or not the money has arrived. Cash, by contrast, is real money: it is what pays wages, suppliers, and loan repayments.
Profit is an opinion; cash is a fact.
When accounts receivable pile up and inventory will not move, the profit and loss statement can still show a profit. But the bank balance has already run dry. Many businesses fail not because they are unprofitable, but because their cash flow breaks—they have enough profit, yet not enough cash to keep operating.
I once worked with a manufacturing company with annual revenue of 30 million and book profit of 2.8 million. The owner was baffled: if the business was making money, why did he have to borrow from friends every month just to make payroll? We pulled the financial statements and found accounts receivable of 12 million and inventory of 8 million—together, 70% of total revenue.
Of that 12 million in receivables, three invoices had been outstanding for over a year; half the inventory was discontinued models that could not be sold at all. In other words, the money it had 'earned' was never cash—just numbers on paper. The company was eventually forced to restructure when it could not repay a maturing loan. It was not unprofitable; its cash was simply trapped in the quagmire of working capital.
2. What Is the Cash Conversion Cycle?
The cash conversion cycle measures one thing: how many days your cash stays tied up from the moment you pay out procurement funds to the moment you collect them back.
It is built from three key figures:
Cash conversion cycle = accounts receivable days + inventory turnover days - accounts payable days
Breaking down each component:
- Accounts receivable days: After you sell and deliver, how long on average before the customer pays. This metric depends on your customer mix, industry norms, and collection discipline. If your customers are large enterprises, 60-day terms are common; if they are small businesses, payment can stretch beyond 90 days.
- Inventory turnover days: How many days goods sit in the warehouse on average before being sold. Manufacturers tend to run higher; trading companies turn inventory much faster. Excessively high inventory turnover days signal serious stock buildup that ties up substantial capital.
- Accounts payable days: After receiving goods from suppliers, how long on average before you must pay them. This metric reflects your bargaining power in the supply chain. Strong companies can negotiate 90-day terms or longer; weaker ones may be asked to pay cash on delivery.
For example: a company with receivables of 45 days, inventory of 30 days, and payables of 60 days. Its cash conversion cycle is 45+30-60 = 15 days. This means its cash is tied up for 15 days before being recovered to begin the next cycle.
3. Let Us Run the Numbers
Take two companies in the same industry, with identical products, annual revenue of 20 million each, and profit of 2 million each. But their operating strategies differ:
Company A(receivables 60 days, inventory 45 days, payables 30 days):
- Cash conversion cycle = 60+45-30 = 75 days
- Cash tied up for 75 days means a large working-capital outlay. At average monthly procurement of 2 million, it must inject roughly 5 million of additional operating capital just to keep running.
Company B(receivables 30 days, inventory 20 days, payables 60 days):
- Cash conversion cycle = 30+20-60 = -10 days
- What does a negative number mean? The customer's money arrives before you have paid your suppliers. In effect, you are doing business with someone else's money.
Both companies earn the same 2 million in profit, yet Company A must tie up far more capital than Company B. Company B's capital efficiency is more than 4 times that of Company A. This is why a retail giant like Walmart can drive its cash conversion cycle close to zero—it collects from customers faster than it pays suppliers, in effect funding its own business with suppliers' money.
The key lesson from this case: at the same level of profit, a different cash conversion cycle decides whether a business lives or dies. The pace of expansion must match the pace at which the cash conversion cycle improves; otherwise, the faster you grow, the faster you fail.
4. How to Use the Three Threshold Bands
Manage the cash conversion cycle by splitting it into three bands:
| Cycle Range | Status | Recommended Action |
|---|---|---|
| Negative (<0) | Excellent | Keep optimizing—this is the level of leaders like Walmart |
| 1-60 days | Monitor | Break down the three sub-metrics monthly and fix the weak link |
| Over 60 days | Danger | Act now: collect receivables, clear inventory, stretch payables |
Companies above 60 days usually face two problems: weak receivables collection and slow inventory turnover. Combined, these keep cash tied up too long, and expansion actually accelerates the risk of a cash-flow break.
Many business owners overlook the cash conversion cycle most easily during expansion. Opening new stores, launching products, and adding production lines all require capital upfront. But if your cash conversion cycle is already above 60 days, new capital takes more than two months to come back, making the expansion strategy, in essence, a business run on borrowed money—interest costs can eat up every bit of your profit.
CFO Toolkit | Today's Takeaways
Core metric: cash conversion cycle (CCC)
- Red line: 60 days. Anything above it means working capital is too inefficient.
- Formula: accounts receivable days + inventory turnover days - accounts payable days.
- How to apply it: Pull the three balances—accounts receivable, inventory, and accounts payable—from the balance sheet, and divide by average monthly revenue or procurement to derive each figure in days. Calculate once a month to track the trend; below 60 days is the passing mark, and above 60 days you must act now to improve all three turnover days.
6. Three Self-Checks to Do Now
First, pull out your latest balance sheet and copy down the closing balances of three line items: accounts receivable, inventory, and accounts payable. These three numbers are the starting point for analyzing your cash conversion cycle.
Second, divide them by average monthly revenue (annual revenue ÷ 12) and average monthly procurement cost (annual procurement ÷ 12) to get receivables days, inventory days, and payables days. If annual figures are not precise enough, approximate with the average of the most recent quarter.
Third, add the first two and subtract the last—if your result exceeds 60 days, prioritize collecting receivables; if it falls in negative territory, congratulations, you are already running your business on suppliers' money.
7. A Final Word
Profit is an opinion; the cash conversion cycle is a fact. Remember: the faster cash turns, the less capital you need.
Three self-check questions for you:
First: How many days is your cash conversion cycle? Have you crossed the 60-day danger line?
Second: If your largest client delays payment by 60 days, can your company hold on?
Third: Are you looking at the profit and loss statement or the cash flow statement? If it is the profit and loss statement, the numbers may be deceiving you.
After reading this, open your financial statements and spend ten minutes running the numbers. Once done, you will know whether your current position is safe, normal, or in danger. Before making key decisions, have a veteran CFO review them.
Next issue, we will run a 13-week cash forecast: over the next 13 weeks, is your cash enough to make payroll?
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