A business can be profitable on every sale, growing every month, and still fail. This is not a paradox and it is not rare. It is the most common way small businesses die, and it happens because profit and cash are different things arriving at different times.
The difference in one example
You sell 10,000 worth of goods that cost you 6,000. Profit: 4,000. Excellent.
Now add the timing. You paid your supplier on delivery, in January. The goods sat in storage for six weeks. The customer bought in March and pays on 60-day terms, so the money arrives in May.
You spent 6,000 in January and received 10,000 in May. For four months you were 6,000 down on a profitable transaction. Do that five times in a quarter and you need 30,000 of cash to run a business making 20,000 of profit.
If you do not have the 30,000, you stop — regardless of how good the margins are.
The cash conversion cycle
The number that captures this: days between paying for something and being paid for it.
Roughly, it is the days your inventory sits, plus the days your customers take to pay, minus the days you take to pay suppliers.
- Inventory sitting 45 days
- Customers paying in 60 days
- You paying suppliers in 30 days
That is 45 + 60 − 30 = 75 days of financing you are providing out of your own pocket, continuously.
Some businesses have a negative cycle — they are paid before they pay, which means growth generates cash rather than consuming it. Subscription businesses billing annually in advance are the clearest example, and it is a structural advantage worth a great deal.
Why growth makes it worse
This is the part that catches people. If each sale ties up cash for 75 days, then doubling your sales doubles the cash tied up. The faster you grow, the larger the hole, and the hole appears exactly when everything looks like it is going well.
Businesses that fail while growing are almost always failing here.
The four levers
1. Get paid sooner
Deposits up front. Shorter payment terms. A small discount for early payment. Invoice the same day you deliver rather than at month end — this one change alone often removes two weeks.
2. Pay later, legitimately
Negotiate terms with suppliers. Most will grant 30 days to a reliable customer who asks. Do not simply pay late — that costs you the relationship and eventually the supply.
3. Hold less inventory
Every unit on a shelf is cash that is not in your account. Order more frequently in smaller quantities, even at slightly worse unit pricing. The bulk discount is often smaller than the cost of the cash it consumes.
4. Chase overdue invoices immediately
A polite reminder on day one of being overdue is far more effective than an uncomfortable call on day 45. Most late payment is administrative, not deliberate, and a prompt reminder simply moves you up someone’s queue.
The forecast that prevents the surprise
A 13-week cash forecast is the single most useful document a small business can maintain. One row per week: opening balance, money in, money out, closing balance.
Thirteen weeks is the horizon at which you can still act — you can chase a payment, delay a purchase, or arrange finance. At two weeks you can only react.
Update it weekly. It takes fifteen minutes and it turns the question “are we alright?” from a feeling into a number.
The rule to remember
Profit is an opinion that depends on accounting choices. Cash is a fact you can check in your bank account. When the two disagree, believe the bank.