How Do I Know If My Business Is Running Out of Cash? 9 Warning Signs to Look For

Can a profitable business really run out of cash?

Yes, and it happens far more often than most business owners expect. Cashflow problems rarely arrive overnight. In most cases the warning signs are sitting in the numbers for months beforehand, in the bank statements, the aged debtors report and the VAT return. The difficulty is that they are easy to miss when you are busy running the business, winning work and keeping customers happy.

Many owners judge the health of their business by two things: whether sales are going up, and whether the year-end accounts show a profit. Both matter, but neither tells you whether there will be enough money in the bank to pay wages, suppliers and HMRC next month. A business can be growing, profitable and still be heading towards a cash crisis.

This article explains the nine warning signs we see most often when working with owner-managed businesses in England and Wales. It also sets out what to do if you recognise them, what happens if they are left unchecked, and why acting early gives you far more options than acting late.

Who should read this?

This guide is written for directors of limited companies, sole traders, partners and anyone responsible for the finances of a small or medium-sized business. It is designed to help you recognise when something in your numbers needs attention, and when it is time to bring in an adviser who can interpret the figures and act on them with you. If you have ever looked at a healthy profit figure and wondered why the bank balance does not seem to match, it is written for you.

What is the difference between profit and cashflow?

Profit and cash are not the same thing, and understanding why is the key to spotting trouble early.

Your profit and loss account records income when you earn it and costs when you incur them, not when money actually changes hands. This is known as the accruals basis, and it is how most limited company accounts are prepared under UK accounting standards. If you invoice a customer £20,000 in March on 60-day terms, that sale counts towards your March profit. The cash, however, may not arrive until May, or later if the customer pays slowly.

Cashflow, by contrast, is simply the movement of money in and out of your bank account. It is the number that decides whether you can pay this month's bills.

Why the gap between profit and cash matters

Several everyday items create a gap between the profit you report and the cash you hold. Customers paying on credit, stock bought before it is sold, loan capital repayments (which do not appear as a cost in the profit and loss account), VAT collected on behalf of HMRC, and tax bills that fall due months after the profit was made all pull the two figures apart. None of these is a problem on its own. Together, and without careful monitoring, they can leave a profitable business unable to meet its obligations when they fall due.

That is why the warning signs below focus on cash movements, timing and pressure points, rather than on the bottom line alone.

What are the 9 warning signs that my business is running out of cash?

Every business is different, but in our experience the same patterns appear again and again. One sign on its own may simply reflect a seasonal dip. Two or three appearing together usually deserve a closer look.

1. Your bank balance is falling while sales are rising

This is one of the most misunderstood warning signs, because growth feels like good news. When sales grow quickly, you often have to pay for staff, materials and stock before your customers pay you. Accountants call this overtrading. The business is busier than ever, yet it needs more and more cash to fund the gap. If your turnover is climbing but your average bank balance is heading the other way, growth may be outpacing the cash available to support it.

2. Customers are taking longer to pay you

A useful measure here is debtor days, the average number of days it takes customers to settle their invoices. If your terms are 30 days but customers are taking 50 or 60 on average, a significant amount of your money is effectively being lent to them for free. Look out for a growing list of overdue invoices on your aged debtors report, or one or two large customers who have quietly started paying later than they used to. A slow payer can sometimes be an early sign that the customer is under pressure too.

3. You are relying on your overdraft or credit cards to get through the month

An overdraft is designed to smooth short-term dips, not to fund the business permanently. If you are regularly close to your limit, or the balance never returns to credit, the facility has become part of your core funding. That leaves you exposed if the bank reviews or reduces the facility, which lenders are entitled to do in many cases.

4. You are paying suppliers later, or they are tightening your terms

Stretching supplier payments can feel like a sensible way to manage cash. Done occasionally and by agreement, it can be. When it becomes routine, however, suppliers notice. Requests for payment up front, reduced credit limits or a credit insurer withdrawing cover are clear signals that others have spotted pressure in your business, sometimes before you have.

5. Tax bills feel like a shock

VAT, PAYE and corporation tax should never come as a surprise, yet for many businesses they do. VAT in particular is money collected from customers on HMRC's behalf, and it is easy to treat it as working capital until the return is due. If you are finding it difficult to set aside enough for tax, or have recently needed to ask HMRC for more time, this is a strong indicator that the business is using money it does not truly have.

6. Stock or work in progress is building up

Cash tied up in unsold stock, or in jobs that are not yet billed, is cash you cannot use. If your stock levels are rising faster than sales, or projects are routinely running for weeks before you can invoice, your working capital cycle is lengthening. Over time, that can drain the bank account even when the work itself is profitable.

7. Your margins are being squeezed

Rising costs for energy, materials, wages and borrowing have put pressure on many businesses' gross margins. If your prices have not kept pace, each sale may now generate less cash than it used to. Shrinking margins are often hidden by growing turnover, so it is worth comparing your gross margin percentage month by month, not just your total sales.

8. You do not have a cashflow forecast, or it is consistently wrong

A business without a cashflow forecast is relying on hindsight to manage its money. Even businesses that do forecast can run into trouble if the forecast is not updated regularly or if actual results repeatedly fall short of it. Persistent gaps between what you expected and what happened usually point to an underlying issue, such as optimistic sales assumptions or costs that are not fully understood.

9. You are using personal money or delaying your own pay to cover the bills

Many owner-managers quietly prop up their business by lending it personal savings, holding back their own salary or dividends, or putting business costs on a personal credit card. It often feels like a temporary measure. If it is happening more than once, it is one of the clearest signs that the business is not generating enough cash to support itself, and it puts your personal finances at risk too.

What should I do if I spot these warning signs?

The most important thing is not to wait. Cashflow pressure is almost always easier and cheaper to resolve when it is caught early, because you still have time, choices and the goodwill of lenders, suppliers and HMRC. The right steps depend on your circumstances, but most businesses benefit from the following.

• Build a short-term cashflow forecast. A rolling 13-week forecast, updated weekly, shows exactly when cash is likely to run short and by how much. It turns a vague sense of worry into specific figures you can plan around, and it is often the first thing a bank or HMRC will ask to see.
• Tighten your credit control. Review who owes you money, chase overdue invoices promptly and consider whether your payment terms still suit the business. Simple changes, such as invoicing on completion rather than at month end, can bring cash in noticeably sooner.
• Speak to HMRC before a payment is missed. If you cannot pay a tax bill in full, HMRC may agree a Time to Pay arrangement that spreads the debt over instalments. Any arrangement is at HMRC's discretion and interest still applies, but approaching them early generally puts you in a stronger position. GOV.UK explains what to do if you cannot pay your tax bill on time.
• Talk to your bank early. Lenders generally prefer to hear about difficulties from you, with a clear plan, rather than discover them through a missed payment or a breached covenant. An early conversation may open up options, such as a temporary facility or restructured repayments, although nothing can be assumed.
• Review your pricing, costs and margins. Look at which products, services or customers generate the most cash, and which tie it up. Small price increases or the removal of unprofitable work can have a surprisingly large effect on cash generation over a year.
• Consider whether additional funding is appropriate. Invoice finance, asset finance or a business loan can bridge a temporary gap or fund growth. They come with costs and obligations, so it is sensible to take advice on whether new borrowing solves the underlying problem or simply delays it.

If customers are paying late, you may also have a statutory right to charge interest and compensation on overdue business invoices. GOV.UK sets out how late payment interest works for commercial debts. Whether to use that right is a commercial decision, particularly where a valued customer relationship is involved.

What happens if I ignore cashflow problems?

Cashflow problems rarely fix themselves. Left unchecked, they tend to build on one another, and the options available to you narrow over time. The consequences can range from manageable inconvenience to serious financial and legal exposure, depending on how far things progress.

• Penalties, interest and lost goodwill. Late payment of VAT, PAYE or corporation tax can lead to penalties and interest from HMRC, which add to the original debt. Suppliers may also impose late payment charges or move you onto stricter terms, making cash management harder still.
• Pressure from lenders. Many business loans include covenants, which are conditions linked to your financial performance. A breach can allow the lender to review, reprice or in some cases withdraw the facility, so lenders' reactions to worsening figures should not be underestimated.
• Formal recovery action by creditors. A creditor owed money by a company can serve a statutory demand, and if the debt is not paid or properly disputed within 21 days, may be able to petition the court to wind the company up. Once matters reach that stage, the time and options available to you are significantly reduced.
• Personal risk for directors. When a company is, or is likely to become, insolvent, directors must give proper weight to the interests of creditors. A director who continues trading when they knew, or should have known, that insolvent liquidation could not reasonably be avoided may face personal liability for wrongful trading, as well as the risk of disqualification.

Are there deadlines I need to watch?

Yes. Tax deadlines are often the point at which hidden cashflow problems surface. For most limited companies, corporation tax is due nine months and one day after the end of the accounting period, VAT is usually due one calendar month and seven days after the end of each VAT period, and PAYE is generally due by the 22nd of the following month when paid electronically. Payment dates can differ depending on your circumstances, so it is worth confirming your own deadlines with your accountant.

When should I take specialist advice?

If you are concerned that the business may not be able to pay its debts as they fall due, it is important to take advice promptly. In many cases a clear forecast, a conversation with creditors and some operational changes are enough to restore stability. Where the position is more serious, early advice from your accountant and, where appropriate, a licensed insolvency practitioner can help you understand your duties and protect both the business and yourself. Every situation is different, and outcomes cannot be guaranteed, but acting early consistently gives directors more room to choose the best route forward.

How can CrestWell Accountants and Advisors help with cashflow problems?

At CrestWell Accountants and Advisors, we help business owners see what their numbers are really saying, and act on it before small pressures become serious problems. We work with owner-managed businesses at every stage, from those wanting better visibility to those already feeling the strain.

Depending on your needs, our support can include:

• Cashflow forecasting and monitoring. We build practical, rolling forecasts tailored to your business and help you keep them up to date, as part of our fractional finance director service.
• Monthly management accounts. Regular, clear reporting means warning signs are spotted in weeks rather than at year end. Our bookkeeping and management accounts service gives you the figures you need to make confident decisions.
• Support with HMRC, banks and lenders. We can help you prepare the forecasts and information that HMRC or your bank are likely to request, and support you through those conversations. While no outcome can be guaranteed, a well-prepared approach generally carries more weight.
• Business advisory and outsourced finance director support. For businesses that need senior financial input without a full-time hire, we offer ongoing advice on pricing, margins, funding and growth. Find out more about working with a fractional finance director.

Speak to us early, before cashflow becomes a crisis

If any of the warning signs in this article sound familiar, the best time to talk to us is now. An early conversation is not a commitment. It is an opportunity to understand where you stand, what your options are, and what practical steps could make the biggest difference. Many of the businesses we help are not in crisis; they simply want reassurance that they are seeing the full picture.

Contact CrestWell Accountants and Advisors today to arrange an initial conversation. We will take the time to understand your business, review your numbers with you, and help you build a clear, realistic plan to protect your cashflow and your peace of mind.