Can you afford your next customer?

You’re spending to grow, but are you growing profitably?

A hidden double cost is threatening UK SMEs, driven by two escalating pressures. Firstly, we have late payments, which in the past year alone have led to businesses writing off an average of £31,000 in unpaid invoices. Then there are skyrocketing acquisition costs that can start from £150 and end up anywhere north of £1,100 per qualified lead^[1]. Together, it’s a perfect storm of an unmanageable financial strain, contributing to 38 businesses closing every day in the UK.

But, by arming yourself with the right debt insight and lead sourcing strategy, you can protect your cash flow and safeguard your company’s future.

From targeting ideal-fit prospects upfront to checking the creditworthiness of new customers before onboarding, our SME-focused guide will help you create and navigate a gameplan for both protection and growth.

“SMEs face a costly double burden: they spend more to win new customers, and lose more when those customers don’t pay. The businesses that grow profitably are those that treat credit risk as part of their go-to-market strategy, not an afterthought.”

SME Expert TBC, Experian

The rising bad debt crisis for UK SMEs

To fully understand the scale of the challenge, let’s start by looking at the credit trends and growing bad-debt landscape that UK SMEs currently operate in.

Late payments affect 1.5 million businesses and cost the UK economy over £11 billion a year, and it’s hitting SMEs the hardest. In just the past year alone, UK SMEs have written off an average of £31,000 in unpaid invoices – a huge financial strain that ultimately means 38 of them are closing every day.

Even the most resilient SMEs can fall victim to this. Perhaps they show profit on paper, but without timely customer payments that ensure money is in the bank to keep operations running, the balance tips to bad debt and business insolvency.

The UK government is trying to combat this and has recently introduced the G7’s toughest late-payment measures, with the Small Business Commissioner now able to impose multi-million-pound fines on persistent offenders. The changes will also include a new 60-day cap payment term and mandatory interest on late payments. However, there are several steps SMEs can take themselves to help minimise this risk, which we’ll dive into shortly.

The real cost of B2B customer acquisition

Content marketing, email outreach, search engine marketing and pay-per-click ads on paper you’re ticking all the right boxes for outbound lead generation. You’ve identified target prospects and know exactly what messaging and proof points will resonate with them.

Job done, right?

Not quite. A formulaic strategy like this, which lacks nuance and a deeper dive into the prospect, is one of the reasons why B2B lead generation costs in the UK are rising rapidly.

Saturated inboxes, stricter data privacy rules, and longer sales cycles have created savvier audiences who see generic marketing efforts as just noise. Similarly, poor targeting inflates Customer Acquisition Costs (CAC) by wasting ad spend on audiences who will never buy.

This triggers a damaging flow where you:

1. Pay for unimpactful campaigns and clicks that bounce instantly
2. Force advertising into inefficient, expensive bidding and placements
3. Exhaust your sales team’s valuable time
4. Burn through your profit margins

In response, SMEs are shifting away from cheap, spammy outreach in favour of expensive, highly-targeted campaigns.

Great for acquiring high-quality leads, but terrible for your bank balance as these costs amounted to a 5% increase from 2024-26 alone. With figures starting at £150.00 and reaching as high as £1,100 per qualified lead^[1], the numbers can be unsustainable for even the healthiest SMEs.

So how do you cut these costs while still reaching those high-value prospects?

You want to start by working out your company’s Customer Lifetime Value (LTV) to CAC ratio. This metric reveals how much revenue a customer generates across their relationship with your business, compared to how much it costs to acquire them in the first place. A healthy LTV:CAC ratio is 3:1 – anything below that can start destroying value.

The difference between CPL and CAC

If your marketing team already tracks cost per lead (CPL), it’s easy to wonder why you need to worry about customer acquisition cost (CAC) too.

However, there’s a fundamental difference between them that can highlight exactly where you need to focus your targeting budget and effort:

Relying on CPL alone ignores data quality and puts you right back in that loop of chasing low-value prospects who are unlikely to make a purchase or could be a risky financial partner.

How bad debt and high CAC compound

Acquiring and onboarding a new customer demands a huge amount of time, resource, and budget. If that customer then fails to pay, the damage is doubled, as you need to cover the costs of both acquisition and loss to keep operations running.

Some may look for an interim cash injection or they’ll write off the debt entirely. Either way, it’s double the work just to break even on lost profits.

This is exactly where poor targeting hurts your business; by draining budgets on clicks, views, and leads from prospects who’ll never convert. Or from those who will convert, but have such a poor business credit score that they may not be able to pay for your services in good time, if at all.

Put simply, cash flow strain is the common link between wasted acquisition budget and late payments. So much so that 28% of SMEs^[2] have resorted to short-term financing, like loans or credit lines, just to survive cash flow gaps caused by late payments.

This means that credit risk assessments and payment performances on potential customers should be an integral part of a sales qualification process, and never an afterthought.

Having upfront insight into a potential customer’s finances allows you to spot any payment red flags early. From there, you can mitigate the risk accordingly by revising payment terms or choosing to walk away before spending a single penny on onboarding.

What you can do: A practical guide for SMEs

While it’s likely you’re already investing in lead generation, do you also have a strategy in place to measure the quality of the customers you’re engaging with? If you’re unknowingly targeting – and eventually onboarding – high-risk partners, you could be in for a troublesome cycle of wasted acquisition costs and compounding bad debt.

To help protect your business from this financial risk, here are three essential steps:

1. Find and target the right prospects using B2B data

Targeting the right businesses from the start reduces acquisition waste and increases the likelihood of securing profitable, paying customers.

Use a B2B marketing database to identify businesses that match your ideal customer profile. This search can be filtered by sector, size, turnover, and growth stage. Then, dig deeper into those findings for credit health information and any other financial data that could lead to potential red flags.

Experian’s Business Prospect Profile lets you find the right customers for your business using financial and risk data, so you’re only spending budget on prospects who are most likely to pay. It features 15 million contacts across 5 million UK businesses, with data refreshed every 24 hours from 20 sources.

2. Screen before you sell with business credit checks

Prevention is cheaper than collection, which means checking a customer’s credit score before onboarding is one of the most cost-effective risk controls available to SMEs.

Before onboarding any new customer, run a business credit check to assess both their financial ability and their ability to pay.

Experian’s Business Credit Reports help you check a business before you start trading, by sharing an in-depth view of any UK company’s credit profile. This includes their payment history, financial health, and the Experian Commercial Delphi Score.

3. Monitor credit risk over time

Credit risk constantly fluctuates, and a business that was financially healthy during onboarding isn’t guaranteed to stay that way. This makes continuous monitoring a must.

By setting up ongoing credit monitoring, you can get automatic alerts about a customer’s credit profile before they turn into a bad debt problem. This fair warning gives you the flexibility to adapt payment terms and protect your cash flow before any minor issues have the chance to spiral into unmanageable bad debt.