Bad debt prevention for UK B2B businesses

If you sell to other businesses on credit terms, bad debt is one of the few costs you can do something about before it arrives. An unpaid invoice is not simply lost revenue; it is revenue you have already spent money to earn. It is rarely the first sign of trouble at the customer’s end; it is the last, and by the time an invoice goes unpaid, the options for getting the money back have narrowed considerably.

The uncomfortable truth is that most bad debt is predictable. We tested that: we took 100 UK companies that entered insolvency on a single day and scored the last accounts each filed while still trading, and 81 of them were already showing serious warning signs. Some customers fail suddenly, and nothing in the public record would have warned you. But a large share of the ones who eventually stop paying already had signs when you first took them on, or in the months before they stopped. Reducing bad debt is being able to spot those signs earlier and acting on them.

Where bad debt actually comes from

Bad debt is usually described as though it were a single event, which is the customer failing to pay. It is more useful to think of it as the end of a chain, because each link in that chain is something you control and the failure is not. The chain nearly always starts with a customer taken on without anyone looking at whether they could afford the commitment, because the order was welcome and the question felt awkward to ask.

From there it runs through terms that were set by habit rather than by risk, so a new customer gets the same limit and the same thirty days as one you have traded with for a decade. Then through invoicing that goes out slowly, or carries the wrong purchase order number, or arrives at a person who does not approve payments, each of which quietly buys the customer another few weeks. Then through a dispute that was never resolved because chasing it felt like bad manners, and an invoice in dispute is an invoice that is not being paid. And finally through the absence of anyone looking again at a customer who was checked once at the start and never since.

One more cause deserves naming because it is the one that turns a bad debt into a crisis rather than a cost, and that is concentration. A business where a single customer accounts for a quarter of the ledger has made that customer’s solvency its own. The individual invoice being unpaid is survivable; the exposure that built up quietly over two years of growing orders is often not.

What follows deals with each of those links in turn, in the order they happen.

Bad debt prevention starts before you extend the credit

The cheapest bad debt to avoid is the one you never take on. When a new customer asks for terms, that is the moment you have the most leverage and the least exposure, so it is the moment to look properly. Every UK limited company files accounts at Companies House, and those accounts will tell you whether the business owns more than it owes, whether it can cover the bills falling due this year, and whether it has been filing on time. A customer that is already technically insolvent, or already unable to meet its short-term obligations, is a customer that may not be able to pay you either, however good the order looks.

This is not about refusing anyone who shows a weakness. It is about knowing what you are taking on, so that the decision to extend credit is a decision rather than an assumption. There is a full method for this in our guide to how to check a company before extending credit.

Set the terms to match the risk

Vetting is only useful if it changes what you do. A customer who checks out cleanly can have your standard terms. A customer with a weaker position can be given tighter terms: a smaller credit limit, a shorter payment window, a deposit up front. The mistake most businesses make is to treat credit as binary: either you extend it, or you do not, when in practice the terms are a dial you can turn.

That dial is how you keep the revenue without carrying the full risk. A customer who is fine on a five hundred pound limit may be a serious problem on a fifty thousand pound one, and the difference between those two outcomes is a decision you make at the start.

Then make it easy to pay you

Vetting and terms decide how much you are exposed to. What happens next decides how long you are exposed for, and this is the half of bad debt prevention that gets ignored because it is administrative rather than analytical. A meaningful share of late payment has nothing to do with a customer being in trouble and everything to do with friction that nobody on your side is measuring.

Invoice the day the work is done rather than at the end of the month, because a payment window only starts when the invoice lands. Put the purchase order number on it if they use them, since an invoice without one is frequently returned rather than queried, and you will not always be told. Send it to the person who approves payment rather than the person who placed the order, as those are rarely the same person and the gap between them can be weeks. State the due date as a date rather than as terms, because thirty days from the invoice date and thirty days from the end of the month are a fortnight apart and both get called thirty days.

Chase before the invoice is late rather than after. A short note a few days before the due date asking whether everything is in order for payment is not aggressive, and it catches the two problems you most want to catch early, which are that the invoice never arrived and that something on it is disputed. A dispute raised the week before payment is due can usually be settled in a day. The same dispute discovered six weeks after the due date has already cost you the money and half the relationship.

Resolve disputes quickly even when you are confident you are right, because an unresolved dispute is a licence to hold the whole invoice, often including the part nobody disagrees about. If a line is contested, invoice the rest separately and argue about the line. And keep a record of when each customer actually pays rather than when they are supposed to, since a customer drifting from twenty-eight days to forty-five to sixty has told you something about their cash position that their filed accounts will not confirm for another year.

Watch for the trend, not just the failure

Companies rarely fail without warning; they deteriorate gradually. Their accounts get worse year on year, their filings start slipping, their payment behaviour with you changes before it stops. The businesses that get caught by bad debt are usually the ones that looked once, at the start, and then never looked again.

So it is worth re-checking your significant customers periodically rather than treating the initial vetting as a one-off. Read the latest accounts when they file. Notice if a customer that used to pay in thirty days is now taking sixty. Notice if they start disputing invoices they never disputed before, or if the person who used to answer the phone has left. A customer heading toward trouble usually gives you months of signals, and the value of noticing is that you can reduce your exposure while they are still paying, rather than joining the queue of creditors afterwards.

The customers who eventually stop paying almost always start slipping first. The money is saved in the months before the invoice goes unpaid, not after.

Act early, and act on the exposure

When a customer does start to slip, the instinct is often to wait and see, because chasing feels aggressive and the relationship matters. But waiting is itself a decision, and it usually increases what you stand to lose. Acting early does not have to mean an aggressive collections process. It can mean tightening terms on future orders, reducing the credit limit, asking for payment up front on the next job, or simply chasing the current invoice properly rather than letting it run.

The point is to stop the exposure growing while you still can. A customer who owes you five thousand pounds and is struggling is a problem. The same customer, six months later, owing thirty thousand because you kept supplying while they slipped, is a different problem entirely, and it is the one that puts businesses under.

The process, in short

Reducing bad debt comes down to a handful of habits, none of them complicated. Check a customer’s filed accounts before you extend terms, so you know what you are taking on. Set the terms to match what you find, using the credit limit and the payment window as a dial rather than a switch. Invoice promptly and accurately, to the right person, and chase before the due date rather than after it. Settle disputes while they are small enough to settle. Re-check the customers who matter, because a business that was sound two years ago may not be sound now. And when the signals turn, act on them while your exposure is small.

None of that requires a credit department or expensive tooling. It requires knowing where to look and doing it consistently, which is where most businesses fall down, not because the information is hard to get but because reading it properly, for every customer, every time, is more work than anyone has time for.

Reading the filed accounts of a UK company and turning them into a clear answer is exactly what CompanyIQ does. It reads the accounts, scores the financial health, checks the directors, and surfaces the warning signs, so you can see whether a customer is sound before you extend the credit rather than after the invoice goes unpaid. If you sell on terms and want the public record read for you, you can run your first check at company-iq.co.uk.

There is more on the underlying signals in our guide to how to check if a company is financially stable.