8 Early Warning Signs of Cash Flow Problems (And How to Solve Them)

Cash flow problems occur when your client does not have enough cash to cover short-term financial commitments, even if it appears profitable. In practical terms, this means a business can be growing and turning a profit on paper while still struggling to pay wages, suppliers or HMRC on time. Early warning signs of cash flow problems include customer payment delays, overreliance on credit, limited growth funding, and poor cash forecasting. Identifying these signs is important to take action before financial pressure increases.

You must have often come across clients complaining that even when their sales are increasing and their business is expanding, they still face cash flow problems. Unfortunately, this situation has become more common among businesses.

Many businesses do not fail because they lack sales. They fail because they cannot manage the timing between money coming in and money going out. These are the early stages of cash flow problems. For accounting practices advising UK businesses, spotting these warning signs early can make a significant difference, particularly given that late payments alone are now estimated to cost the UK economy almost £11 billion a year and contribute to around 14,000 business closures annually.

For that, you will need to adopt a proactive approach towards cash flow management, which will help your clients protect their profitability, assist them in confident decision-making, and avoid unnecessary financial stress.

In my work advising outsourced FD clients, I find that greater clarity around financial position helps businesses understand their numbers, improve financial control, and make better decisions before problems become urgent

What Are Cash Flow Problems?

Cash flow problems occur when your clients do not have enough cash to meet their financial obligations when they are due. That does not mean that they are unprofitable. There are many instances where a company can show strong revenue and still experience cash shortages.

For example:

A customer invoice worth £50,000 may appear as income. The business may still need to wait 60 or 90 days before receiving payment. During that period, wages, rent, suppliers, and tax obligations still need to be paid.

Cash flow focuses on timing, and profit focuses on overall financial performance. Both are important, but cash availability determines whether your clients can continue operating smoothly.

As an accounting practice handling your clients accounting, you will find that making your clients understand cash movement is often just as important as reviewing their profit figures.

What Causes Cash Flow Problems?

Cash flow problems usually develop gradually rather than appearing overnight.

These causes are:

Slow Customer Payments

Late-paying customers are one of the major causes of cash flow problems. Your clients must have completed their work, issued invoices, and recorded the revenue but will have to wait for weeks or months for the payment to come. Such long payment cycles reduce the availability of working capital.

Poor Cash Forecasting

Without regular forecasting, your clients will be unable to see the upcoming pressure points.

They may not realise that:

• Tax payments are approaching
• Payroll costs are increasing
• Large supplier payments are due

A forecast provides visibility before problems occur, and increasingly this is done through cloud-based cash flow management software rather than static spreadsheets, giving a rolling, always-current view of pressure points rather than a snapshot that goes stale within weeks.

Rapid Growth

When your clients grow rapidly, there will be a cash shortage due to an increase in cash demands. During the growth phase, your clients will have to invest in:

• Additional employees
• Stock
• Marketing
• Equipment
• Technology

This will lead to revenue increase, but cash can become restricted during expansion.

Increasing Costs

Rising operating expenses can quickly affect cash availability.

This includes:

• Wage increases
• Supplier price changes
• Higher borrowing costs
• Increased overheads

Lack of Financial Controls

When your clients have unclear internal financial processes, it will lead to confusion as to where the money is going, thus making it harder to respond when cash pressure appears.

The 8 Early Warning Signs of Cash Flow Problems

Recognising the warning signs early gives your clients the time to respond. Below are eight signals that accountants and business owners should monitor.

1. Relying on Overdrafts or Credit Lines to Cover Payroll

The use of borrowing while doing business is normal, but for your clients to frequently rely on overdrafts to cover payroll indicates a serious cash flow issue.

Payroll is one of the most important business commitments, and employees expect to be paid on time, regardless of when customers settle invoices.

If borrowing becomes necessary every month, your clients should review:

• Customer payment timing
• Pricing structure
• Operating costs
• Cash reserves

You can help your clients identify whether the issue is temporary or a sign of ongoing financial pressure.

2. Debtor Days Are Increasing

Debtor days measure how long customers take to pay invoices. When debtor days increase, cash remains tied up in unpaid invoices.

For example:

A business normally receives payment within 30 days. Over time, customers begin paying after 60 or 90 days. Sales may look healthy, but available cash decreases.

Your clients should monitor:

• Outstanding invoices
• Customer payment patterns
• Overdue accounts

Improving credit control can often release cash without needing additional borrowing.

Simple actions can reduce debtor days; this includes:

• Sending invoices promptly
• Setting clear payment terms
• Following up overdue payments
• Reviewing customer credit risks

3. Moving Money Between Accounts to Cover Shortfalls

Many businesses resort to shifting money from one account to another frequently. But frequent transfers indicate that the business does not have enough financial visibility.

Examples include:

• Using tax funds to pay operating expenses
• Delaying supplier payments to cover payroll
• Moving money between departments

This creates short-term relief but can create larger problems later.

A clear cash management process will help your clients understand what money is available and what commitments are approaching.

4. You Cannot Fund Growth Opportunities

When your client grows, it will require investments to sustain it.

During the growth phase, your client will need to:

• Hire new employees
• Launch new services
• Invest in marketing
• Purchase equipment

But such investments put pressure on their cash availability, preventing many of these plans.

This can be frustrating for them, especially when they know that they have potential but lack available resources. By helping them with strong cash flow management, you can enable your clients to grow without putting unnecessary strain on finances.

5. Profit Looks Fine on Paper, But the Bank Balance Does Not

You might find your client confused when they see their profits on one end but struggling to pay their bills. This happens because profit and cash flow measure different things.

When your clients experience large sales, but the customers have not paid yet, they will face a cash crunch.

For example:

A company completes a £100,000 project in March. The revenue appears in its accounts. However, the client has 90-day payment terms.

Once the sale is done, your clients still need to cover:

• Staff salaries
• Office costs
• Software subscriptions
• Tax obligations

until the payment arrives.

This gap between profit and available cash is one of the most common reasons for businesses to experience financial pressure.  For practices advising growing businesses, conducting regular cash flow reviews and explaining this difference can help clients make better financial decisions.

6. Suppliers Are Tightening Terms or Requesting Upfront Payments

When suppliers are changing or tightening payment conditions, it can be an early warning sign.

A supplier that previously offered 30-day payment terms may suddenly request:

• Payment upfront
• Shorter payment deadlines
• Deposits before delivery

This often happens when suppliers become concerned about payment reliability.

For your clients, losing favourable supplier terms can create additional pressure. Therefore, it is important to maintain strong supplier relationships.

Your clients should:

• Communicate openly with suppliers
• Avoid ignoring overdue payments
• Negotiate realistic payment arrangements
• Review cash availability regularly
• Consider signing up to the Fair Payment Code, which signals to suppliers that a business is committed to paying promptly and can help preserve trust during a cash squeeze

Such early actions can prevent relationships from becoming difficult.

7. There Is No Cash Forecast, or It Is Not Reviewed Regularly

A cash flow forecast shows how much money your clients expect to receive and spend in the future. Without a forecast, your clients will make decisions based on the current bank balance.

The problem is that today’s balance does not show what is coming next.

A good cash forecast should include:

• Expected customer payments
• Regular expenses
• Tax deadlines
• Planned investments
• Seasonal changes

Based on the size of your client’s business, SMEs (monthly forecasts) and large ones (weekly forecasts) must be conducted by you.

8. Revenue Depends on One or Two Major Clients

For your clients to depend heavily on one or two customers creates financial risk.

For example:

A business receives 70% of its revenue from one client. If that client delays payment, reduces work, or leaves completely, the impact can be significant.

Revenue concentration can affect:

• Cash stability
• Growth plans
• Hiring decisions
• Business confidence

Businesses should regularly review customer concentration and work towards a more balanced client base. A strong sales pipeline and diversified revenue sources provide greater financial security.

How to Prevent Recurring Cash Flow Problems

To prevent cash flow problems for your clients, you will need to provide regular financial management to your clients instead of occasional fixes. For a fuller playbook, see our guide on 5 strategies to maintain strong cash flow in challenging times.

You can improve your client’s cash stability by focusing on the following areas.

Create Regular Cash Flow Forecasts

Cash flow forecasting should be made routine with your clients.

A simple forecast can highlight:

• Future shortages
• Investment opportunities
• Seasonal pressure points

Improve Invoice Management

Invest in faster invoicing, which will lead to faster payments.

You should invest in:

• Sending invoice immediately
• Use clear payment terms
• Follow up on overdue invoices quickly

Consider Invoice Financing for Short-Term Gaps

For clients whose cash is genuinely tied up in unpaid invoices rather than lost to overspending, invoice financing or factoring can release working capital without waiting for customers to pay. This is worth raising as an option before a client’s cash position becomes urgent, since it is generally easier to arrange from a position of stability than as a last resort.

Build a Cash Reserve

Encourage your clients to have a financial buffer to overcome unexpected situations. It is recommended to maintain enough cash to cover several months of essential expenses where possible.

Review Expenses Regularly

Conduct regular cost reviews for your clients to identify unnecessary spending.

This does not mean cutting costs mindlessly. It means ensuring every expense supports your client’s business goals.

Understand Key Financial Numbers

You and your clients should monitor:

• Gross profit margin
• Net profit margin
• Debtor days
• Cash conversion cycle
• Monthly cash position

With clear financial information in hand, your clients can make better decisions.

This is where professional financial guidance can add real value.

Julian Hobbs can assist you in gaining a clearer understanding of the numbers, providing practical financial insight that supports your clients better planning and long-term stability.

When Cash Flow Problems Signal Insolvency Risk

Cash flow problems do not mean that your clients are failing, and even your successful clients can experience temporary cash pressure.

However, certain warning signs require urgent attention.

These include:

• Regularly missing supplier payments
• Falling behind on HMRC obligations
• Using new borrowing to repay old debt
• Unable to meet payroll commitments
• Receiving creditor demands
• Losing access to supplier credit

As per the 2024 report from gov.uk, late payments research from the Department for Business & Trade 36% of surveyed businesses attributed paying their suppliers late to administrative errors; 31% to disputed invoices; and 23% to technical issues.

After identifying problems, you can consider solutions for your clients such as:

• Restructuring costs
• Improving collections
• Negotiating payment terms
• Reviewing business models

Conclusion: Take Control of Cash Flow Before Problems Become Pressure

Cash flow problems do not happen suddenly; they start with small warning signs like:

• A few late customer payments
• A growing reliance on credit
• A forecast that has not been updated
• A supplier asking for faster payment

For accounting practices like yours, helping clients understand cash flow is about more than solving immediate problems. It is about creating stronger, more resilient businesses.

With the right financial visibility, your clients can make confident decisions, invest in growth, and avoid unnecessary pressure. Julian Hobbs works with practices that want clearer financial insight and practical support to improve decision-making for their clients.

Ready to understand your client’s finances with greater clarity?

Contact us and discover how better financial insight can help you identify risks early, improve cash flow control, and build a stronger future for your business, through a dedicated cash flow service built around outsourced FD expertise.

FAQs: Frequently Asked Questions