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For many UK businesses, profit looks healthy on paper long before cash reaches the bank. A sale may be recorded, an invoice may be raised, and revenue may appear in the accounts, but if the customer has not paid, the business is still funding that sale from its own working capital.
This is why accounts receivable plays such an important role in the cash flow statement. It sits at the centre of a common business challenge: the difference between what a company has earned and what it has actually collected.
In 2026, this difference matters more than ever. Late payments continue to place pressure on UK businesses, with the government estimating that more than 1.5 million businesses are affected each year. Late payments are estimated to cost the UK economy almost £11 billion annually, while around 14,000 businesses close each year as a result of late payment issues.
For finance teams, owners, and decision-makers, accounts receivable is not just an accounting line. It is a practical signal of liquidity, customer payment behaviour, working capital discipline, and the reliability of operating cash flow.
What Accounts Receivable Means In Simple Terms
Accounts receivable refers to money owed to a business by customers for goods or services already supplied but not yet paid for.
For example, if a business delivers £20,000 of services in March and gives the customer 30 days to pay, the business records the sale in March. Until the customer pays, that £20,000 sits as accounts receivable on the balance sheet.
This is normal in businesses that sell on credit terms. The issue begins when receivables grow faster than collections. A business can show rising revenue and still experience cash pressure if invoices are not being converted into cash quickly enough.
Where accounts receivable appears in the cash flow statement
Under UK GAAP, FRS 102 Section 7 sets out how changes in cash and cash equivalents should be presented across operating, investing, and financing activities. Accounts receivable normally affects the operating activities section because it relates to day-to-day trading.
Most businesses that prepare a cash flow statement use the indirect method. Under this method, profit is adjusted for non-cash items and working capital movements. One of those working capital movements is the change in trade receivables.
The logic is simple:
If accounts receivable increases, cash flow from operations decreases.
If accounts receivable decreases, cash flow from operations increases.
This happens because an increase in receivables means the business has recognised revenue that has not yet been collected in cash. The IFRS Foundation’s educational material on cash flow statements shows this clearly, with an increase in trade receivables deducted from operating cash flow under the indirect method.
Why an increase in accounts receivable reduces operating cash flow
An increase in accounts receivable usually means more customers owe the business money at the end of the period than they did at the beginning.
That may happen for good reasons. The business may have grown, won larger contracts, or moved into higher-value work. But from a cash flow perspective, unpaid invoices still represent cash that has not entered the business.
Consider this example:
A business reports £100,000 in profit before working capital movements. During the year, accounts receivable increases by £25,000. That £25,000 represents sales recognised but not collected. In the cash flow statement, the increase is deducted from operating cash flow.
So, operating cash flow becomes £75,000 before other adjustments.
This does not mean the sale was bad. It simply means the cash has not yet been received. The gap between revenue and collection is what finance teams need to monitor carefully.
Why a decrease in accounts receivable improves cash flow
A decrease in accounts receivable means the business has collected more from customers than the value of new unpaid invoices added during the period.
This is usually positive for cash flow. It shows that invoices are being converted into money in the bank.
For example, if accounts receivable falls by £15,000 during the year, that reduction is added back in the operating section of the cash flow statement. It means the business has released cash from its debtor book.
This is why strong receivables management can improve cash flow without needing more sales, borrowing, or external funding. Sometimes, the fastest way to improve liquidity is not to sell more. It is to collect what has already been earned.
The late payment problem and why it matters
Accounts receivable becomes a bigger issue when invoices remain unpaid beyond agreed terms. In the UK, late payment is not a minor administrative problem. It is a structural cash flow issue for many businesses.
The UK government has estimated that businesses are owed around £26 billion in late payments at any given time, with affected businesses owed an average of £17,000. It also estimates that staff spend around 133 million hours each year chasing late payments across the economy.
Private-sector research points in the same direction. Sage, using research commissioned from CEBR, reported that 44% of analysed invoices were paid late and that £112 billion was locked up in late payments, based on more than 1.2 million anonymised invoices from over 31,000 Sage customers.
For a business, this affects more than the finance department. Late collections can delay supplier payments, restrict hiring, increase reliance on overdrafts, and reduce the ability to invest in growth.
How accounts receivable affects the three main financial statements
Accounts receivable connects the profit and loss account, balance sheet, and cash flow statement.
On the profit and loss account, the sale is recorded when revenue is recognised. On the balance sheet, the unpaid amount appears as an asset under trade receivables. On the cash flow statement, the movement in receivables adjusts operating cash flow.
This is why profit alone can be misleading. A company may report strong revenue growth but weak operating cash flow if receivables are building up.
For example:
Revenue may increase because more invoices were raised.
Profit may increase because those invoices were recognised as income.
Cash may decrease because customers have not yet paid.
This is the gap that a cash flow statement helps reveal.
A practical example for a UK business
Imagine a professional services company in the UK reports the following:
Opening accounts receivable: £80,000
Closing accounts receivable: £120,000
Profit before working capital movements: £150,000
The company’s accounts receivable has increased by £40,000.
In the cash flow statement, that £40,000 increase is deducted from operating cash flow because it represents cash not yet collected from customers.
So, before other working capital adjustments:
Profit before working capital movements: £150,000
Less increase in accounts receivable: £40,000
Operating cash flow impact: £110,000
The business may still be profitable, but £40,000 of that profit is tied up in unpaid invoices.
Now imagine the same business reduces accounts receivable from £120,000 to £90,000 the following year. That £30,000 reduction would increase operating cash flow, because money has been collected from customers and released back into the business.
Key accounts receivable metrics finance teams should track
A cash flow statement shows the overall impact of receivables, but businesses need supporting metrics to understand what is happening underneath.
Days sales outstanding
Days sales outstanding, or DSO, measures how long it takes on average to collect payment after a sale. A rising DSO usually means customers are taking longer to pay, which can weaken operating cash flow.
Aged debt
An aged debt report shows how much money is outstanding by time period, such as current, 30 days overdue, 60 days overdue, and 90 days overdue. This helps identify where collection risk is building.
Collection effectiveness
This measures how efficiently the business collects available receivables during a period. It is useful because it focuses on collection performance, not just the size of the debtor book.
Bad debt exposure
Not all receivables will be collected. Finance teams should assess how much outstanding debt may need to be written off or provided against, especially where customers are under financial stress.
Accounts receivable and insolvency risk
Poor receivables management can create pressure even when sales remain stable. The business may have work, customers, and revenue, but not enough cash to meet immediate obligations.
This matters in the current UK environment. The Insolvency Service reported that company insolvencies in England and Wales remained at elevated levels through 2025, with monthly insolvencies since the second half of 2022 at levels last seen during the 2008–09 recession.
Late payment is not the only reason businesses fail, but it can intensify existing pressure. When receivables stay unpaid, businesses may delay supplier payments, draw on credit, defer tax liabilities, or reduce investment. Over time, this weakens resilience.
How to improve accounts receivable and strengthen cash flow
Improving accounts receivable is not only about chasing customers harder. It requires clearer systems, better visibility, and stronger discipline from the point of sale.
Set clear payment terms before work begins
Payment terms should be agreed in writing before goods or services are delivered. This includes due dates, invoice requirements, dispute windows, and consequences for late payment.
Invoice quickly and accurately
Delays in invoicing create delays in collection. Errors in purchase order numbers, VAT details, descriptions, or billing contacts can also give customers reasons to postpone payment.
Monitor receivables weekly, not only at month end
Waiting until month end can allow overdue invoices to build quietly. Weekly review of aged debt helps finance teams act before cash flow becomes strained.
Segment customers by payment behaviour
Not all customers carry the same risk. Businesses should track repeat late payers, customers with disputed invoices, and accounts that regularly exceed agreed terms.
Escalate early and professionally
A structured escalation process helps maintain control. This may include reminder emails before the due date, follow-up calls after the due date, senior-level escalation, and formal recovery steps where necessary.
Connect sales and finance teams
Sales teams often own the customer relationship, while finance teams own collections. If both teams are not aligned, payment issues can be missed. Clear internal communication helps prevent commercial decisions from creating cash flow pressure.
What finance leaders should watch in 2026
In 2026, finance teams should treat accounts receivable as a live cash flow indicator, not just a reporting figure.
Three areas deserve particular attention.
First, look at whether revenue growth is being matched by cash collection. Growth that sits in receivables can create a false sense of financial strength.
Second, monitor whether customers are stretching payment terms. Even small delays can have a large impact when margins are tight or supplier payments are due.
Third, review whether the business has enough process capacity to manage collections. As the government has highlighted, businesses spend significant staff time chasing late payments. That time has a real operational cost.
Building a stronger cash flow position through better receivables control
Accounts receivable is one of the clearest links between accounting performance and business reality. It shows whether sales are turning into cash, whether customers are paying as agreed, and whether the business has enough liquidity to support its plans.
A growing debtor book is not always a warning sign. It may reflect growth. But when receivables rise without disciplined collection, operating cash flow can weaken quickly.
For UK businesses in 2026, the priority is not simply to report accounts receivable correctly. It is to manage it actively. Clear payment terms, timely invoicing, regular aged debt review, and structured follow-up can all help turn recognised revenue into usable cash.
Because in the end, a business does not run on invoices raised. It runs on cash collected.
Sources & References
- UK Government – Late payment consultation outcome and impact of poor payment practices
- ICAEW – FRS 102 statement of cash flows guidance
- IFRS Foundation – Statement of cash flows educational material
- Sage – Late payments and UK small business cash flow research
- UK Government – Company insolvency statistics commentary