"But the accounts say we made a profit — so why is there no money in the bank?" It is the single most common question a finance director hears from a business owner, and the confusion behind it sinks more otherwise-healthy UK businesses than any downturn.
Profit and cash are two different things. A business can be profitable and insolvent at the same time. Understanding why is one of the most valuable things an owner can learn — so here it is, in plain English.
Profit is an opinion. Cash is a fact.
That old finance saying is exactly right. Profit is what's left after you subtract your costs from your sales for a period — but it's calculated using accounting rules that don't care whether the money has actually moved. Cash is simply how much money is in your bank account. One is a calculated figure that depends on judgement; the other you can check on your banking app right now.
The gap between them is where businesses get into trouble.
Why a profitable business runs out of money
Three things routinely cause profit and cash to diverge:
1. You've invoiced, but not been paid
When you raise a £20,000 invoice, your P&L records £20,000 of income that day — and profit goes up. But if the customer pays on 60-day terms, no cash arrives for two months. On paper you're profitable; in the bank you have nothing. Every business that sells on credit lives with this gap, and if it grows faster than your cash reserves, you have a problem.
2. Money left the business but isn't a cost yet
Buy a £30,000 machine and £30,000 leaves your bank immediately. But the P&L doesn't show a £30,000 cost — it spreads that cost over the machine's useful life as depreciation, maybe £6,000 a year for five years. So your profit looks healthy while your cash took a £30,000 hit. The same happens when you repay a loan's capital, or pay a VAT bill, or buy stock that sits on the shelf.
3. Growth itself eats cash
This is the cruel one. Fast growth usually consumes cash even as it generates profit — because you have to pay for materials, wages and stock before your customers pay you. The faster you grow, the wider the gap. Plenty of profitable businesses have gone under precisely because they grew too fast to fund it. It's called overtrading.
A worked example
Imagine a business in its first month:
| Item | Profit view | Cash view |
|---|---|---|
| Sales invoiced | +£50,000 | £0 (paid in 60 days) |
| Materials bought & paid | -£20,000 | -£20,000 |
| Wages paid | -£15,000 | -£15,000 |
| New equipment | -£1,000 (depreciation) | -£12,000 |
| Result | +£14,000 profit | -£47,000 cash |
A £14,000 profit and a £47,000 hole in the bank, in the same month, from the same business. Both numbers are correct. This is why you cannot run a business on the P&L alone.
What to actually do about it
- Watch cash separately from profit. Never assume a profitable month means a comfortable bank balance.
- Forecast your cash forward. The professional standard is a 13-week cash flow forecast — far enough ahead to see a squeeze coming, close enough to be accurate.
- Manage the timing gap. Invoice promptly, chase debtors, negotiate supplier terms, and think hard before funding growth from working capital alone.
- Get monthly numbers. A proper set of management accounts shows profit and cash side by side, so the gap never surprises you.
Never be surprised by your bank balance again
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