Why a profitable business can still run out of money

You can have a healthy-looking profit and loss account and still find yourself unable to pay the wages on Friday. It happens to careful, competent owners all the time, and it is rarely a sign that something is fundamentally wrong with the business. Usually, it is a timing problem. Profit tells you whether your trading makes sense over a period. Cash tells you whether you can pay what you owe today. Both matter, and one does not guarantee the other.

The danger is that profit is the figure most owners look at, because it is the one that appears at the bottom of the report from your accountant. Cash, meanwhile, is what you feel in your bank balance every morning. When the two disagree, cash wins — the bank will not accept a profit forecast as payment.

Profit and cash are measuring different things

It helps to be precise about what each figure actually represents.

• Profit is an accounting measure. It matches the income you have earned in a period against the allowable costs you incurred generating it, whether or not any money has moved.
• Cash is simply what has landed in, or left, your bank account on a given day.

Because one is based on entitlement and the other on movement, they will almost never be identical in any given month. Over the life of a business they tend to converge, but in the short term the gap can be wide — and it is in that gap that most cash crises live.

Where the gap opens up in a typical small business

A handful of everyday situations reliably pull profit and cash apart:

• Credit terms. You invoice a customer on 30-day terms in March. The work is done, so the sale appears in March's profit, but the money may not arrive until April or later. Meanwhile your own bills keep arriving on time.
• Stock before a busy season. You buy materials in advance of your busiest months. The cash goes out now; the sales, and the profit, arrive weeks later.
• Equipment and vehicles. Paying £12,000 for a van is a large cash outflow, but it only reduces your profit gradually through depreciation. The bank balance takes the hit immediately.
• Loan repayments. Only the interest element reduces profit. The capital repayment reduces cash without touching your profit figure at all.
• VAT and tax. You collect VAT from customers and owe it to HMRC later. That money is never really yours, but it sits in the same account you pay wages from.
• Growth itself. More sales usually means more stock, more wages and more debtors. A business can grow its way into an overdraft quite comfortably.

Deposits and staged payments work the other way, bringing cash in before the profit is recognised. If you can use them, they are one of the simplest ways to keep the two measures closer together.

Warning signs to watch for

Cash tightness rarely announces itself. It creeps in through patterns that are easy to overlook when you are busy:

• Debtor days slowly lengthening — the same customers paying later each month.
• An overdraft that used to clear each month and now does not.
• Using VAT or tax money to cover day-to-day costs, intending to "put it back later".
• Stretching supplier payments to their limit as a matter of routine.
• A strong order book paired with a shrinking bank balance.

Any one of these on its own may be manageable. Two or three together, heading into your busiest period, is the point at which to act rather than wait.

Practical habits that protect your cash

None of this requires sophisticated systems. It requires consistency.

• Build a 13-week rolling cash forecast. List the money you expect in and out week by week, based on realistic payment behaviour rather than hopeful dates. Update it every week; it takes twenty minutes and will tell you about a problem six weeks before it arrives.
• Invoice the moment the work is done and chase on a schedule — day one, day seven, day fourteen. A polite reminder email costs nothing and shortens payment times more than most owners expect.
• Ask for deposits on larger jobs or for new customers, and consider staged payments on longer projects.
• Match your terms to your suppliers'. If customers pay in 45 days, try to agree 45 days with your key suppliers rather than paying in 14.
• Keep separate pots for VAT and corporation tax. Move the money aside as it comes in, so it is never part of your working cash.
• Arrange finance before you need it. It is far easier to agree an overdraft or facility when your figures look strong than in the week you have run short.

Bringing both measures together

Rather than choosing between profit and cash, review both each month. Look at your profit and loss account to confirm the business is genuinely making money, and at your cash forecast to confirm you can fund the next few months of trading. Add two or three simple measures to that routine: gross margin, average debtor days, and how many weeks of outgoings your cash buffer covers.

If profit is strong but cash is persistently tight, the answer is usually found in one of three places: how quickly customers pay, how much stock you hold, or how much you have invested in equipment. Fixing the timing — not the trading — is often all that is needed to turn a stressful month into an ordinary one.