A small company that is owed money it has already earned is not, technically, in trouble. The work is done, the invoice is issued, the profit is booked. It simply cannot spend any of it. That gap between earning and being paid has widened sharply across British small business over the past two years, and the way firms have chosen to bridge it should worry anyone who reads a balance sheet.
Late payment now touches 42% of small businesses over a twelve-month period, according to the Q2 Small Business Barometer summarised in early September. The comparable figure ran between 24% and 34% across 2023 and 2024. Among firms that actually employ people, the incidence has more than doubled since the summer of 2024. Sitting behind those percentages is a figure from the Small Business Commissioner that has become the sector’s most quoted number: roughly 26 billion pounds tied up in overdue invoices at any given moment.
Twenty-Six Billion Pounds of Work Already Done
It is worth being precise about what that number is, because it is routinely misread as a measure of bad debt. It is not. Overwhelmingly this is money that will eventually arrive. The damage is done by the waiting, not by the loss.
Working capital is the oxygen supply of a small firm. It pays wages on the day wages are due, settles supplier accounts to keep trade credit intact, covers the VAT and PAYE bills that arrive whether or not customers have paid, and funds the stock or staff needed to take the next order. Money sitting in someone else’s account does none of those things. A business can be profitable on paper and still be unable to accept the contract that would make its year.
That is why late payment behaves less like a nuisance and more like a tax on growth. It falls hardest on the firms doing best, because they are the ones with the most work outstanding and the least slack to absorb a delay.
The Funding Door Small Firms Have Stopped Knocking On
The response to this squeeze is the genuinely striking part of the data, and it runs against what economic theory would predict. When cash flow tightens, firms should seek external finance. They are doing the opposite.
Only 40% of small businesses now plan to seek external funding, a record low in the Barometer series and a steep fall from a peak of 63% in autumn 2023. Of those who do intend to raise money, 40% are looking for less than 10,000 pounds. These are not expansion plans. They are gap-filling exercises.
Meanwhile the use of credit cards as a funding source has nearly doubled, from 4.5% to 8.7%. That single swap tells the story compactly: firms are not refusing finance, they are substituting the most expensive form of it for cheaper alternatives they no longer expect to secure. A credit card charging north of 20% is covering a shortfall created by a customer who simply has not paid.
Expectations have adjusted accordingly. The share of owners expecting to expand in the next year has fallen to 41%, from 50% a year earlier. Those are not the numbers of a sector planning to hire.
Confidence in the Firm, and Not in the Country
The wider mood was captured earlier in the year by a survey of 1,005 business leaders published by the lender iwoca in January, and its central finding has aged well. Only 38% of the small firms it polled were optimistic about the UK economy, down from 51% the year before, while 64% judged the government to be on the wrong track for businesses like theirs and 62% felt the country was falling behind its peers.
Yet 72% still expected their own turnover to grow, essentially unchanged from 71% a year earlier. The company’s chief executive, Christophe Rieche, called this a confidence conundrum: firms remain bullish about their own prospects while their faith in the wider economic direction fractures.
The ranking of concerns in that survey explains the split. Rising day-to-day operating costs came first at 47%, UK economic uncertainty second at 44%, business rates third at 34% and higher interest rates fourth at 30%. Every one of those is a cost or a condition imposed from outside. None of them is a judgment about whether the business is any good.
A larger survey of 1,842 owners, carried out between 30 July and 7 August and published by Simply Business, found the same split from another angle. Some 82% had seen operating costs rise over the previous twelve months, and 82% were absorbing those increases rather than passing them on, with 57% adjusting prices at all. Unpredictable economic conditions were named as a primary barrier by 48%, against 16% a year earlier. Even so, 54% stayed confident about their own prospects over the following twelve to eighteen months.
Read alongside the payment data, the picture resolves. Owners are not pessimistic about their ability to sell. They are pessimistic about their ability to get paid on time, at a predictable cost, in an environment they can plan around.
Why the Usual Remedies Keep Missing
Policy attention on late payment has tended to concentrate on transparency and encouragement: reporting requirements for large firms, voluntary codes, prompt-payment commitments. These are reasonable measures that have coincided with the problem getting substantially worse.
The reason is structural. For a large buyer, stretching payment terms is one of the cheapest sources of working capital available. It requires no credit agreement, pays no interest and carries almost no consequence, because the supplier most affected is precisely the one least able to object. A firm dependent on a major customer for a meaningful share of turnover does not chase that customer aggressively over thirty days. The commercial asymmetry sits underneath the whole problem, and disclosure alone does not touch it.
There is also a compounding effect that rarely appears in the headline statistics. A firm paid late pays its own suppliers late, and those suppliers do the same. Delay propagates down the chain, arriving with most force at the smallest and least cushioned firms at the end of it.
What the Costs Around It Are Doing
None of this is happening in a benign environment. The same September briefing recorded petrol at 161.6p a litre, the highest since November 2022, and diesel at 183.4p. Shop price inflation reached 1.5% in August, a two-year high, with food inflation up from 2.2% to 2.8%.
Borrowing has grown dearer at the same time. UK government debt yields have averaged 3.8% this year, a thirty-year high, with the ten-year gilt yield reaching 5.23%, its highest since 2008. Those levels set the floor under commercial lending rates, which means the credit card substitution described above is happening precisely when substitute credit is at its most expensive.
Labour-market data has been sending mixed signals through the same period, with hiring in some sectors holding up even as output softened, a pattern visible when UK manufacturing hired at a two-year high while output slowed. Firms are holding on to people through a squeeze rather than through a boom, and payroll is the bill that cannot wait for a customer to settle.
The Number That Would Show a Real Change
If conditions genuinely improve, the first evidence will not be a confidence index. Sentiment surveys move with the news cycle and recover quickly for reasons that have nothing to do with a company’s bank balance.
The number to watch is the share of firms reporting late payment, and specifically whether it falls back toward the 24% to 34% band that prevailed through 2023 and 2024. That figure is not an opinion. It records whether money that has been earned is actually arriving.
The second is the funding-intention figure. A move back above 40%, with a meaningful share of requests above 10,000 pounds, would indicate firms borrowing to grow rather than borrowing to survive the wait. Until both move, an improvement in headline sentiment tells you how small businesses feel, which is a different and considerably less useful thing than knowing whether they have been paid.
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