63% of British Invoices Are Paid Late. This Startup Is Fixing That.

Adfin says it can get businesses paid seven times faster than the UK average. Index Ventures just tripled down on that claim. We went digging into whether it holds up.

Somewhere in Britain right now, a business owner is chasing an invoice they sent three months ago. They are not alone, 63% of invoices sent by UK SMEs are paid late. Not occasionally. As a routine, structural, almost accepted feature of how British commerce operates.

Chase.

Wait.

Chase again.

Write a stern email.

Wait some more.

That loop which is tedious, time-consuming, and quietly corrosive to cash flow - is the problem Adfin has decided to eliminate. Not manage better. Not partially automate. Eliminate.

We believe that's an audacious claim for a company founded in 2024. But when we started pulling at the data and when Index Ventures decided to back it to the tune of $18 million in a Series A announced this week, we found something harder to dismiss than we expected.

The problem nobody had actually fixed

The market has not lacked for solutions. GoCardless made direct debits more accessible. Xero and QuickBooks digitised the invoice itself. Stripe simplified card payments. And yet none of these tools closed the loop. You could send a beautiful digital invoice through Xero. You still had to chase it yourself. The automation stopped at the moment the work got uncomfortable.

What we discovered is that the manual machinery of chasing invoices is itself a significant cost -  roughly 80 hours per month lost to payment follow-up alone. Two full working weeks, every month, producing nothing except occasionally the money you were already owed.

That gap between invoice sent and payment received, is exactly where Adfin has positioned itself.

Their platform connects to wherever your billing data lives, extracts invoice data automatically, chases payment autonomously via email, WhatsApp, or SMS in the firm's own tone of voice, and centralises all payment methods in one place.

Capture, Control, Collect.

 "Because it's intelligent, I don't have to worry about trying to find what the invoices are or what amount is owed... Adfin Autopilot will sort everything out." — Jessica Pillow, Pillow May

The numbers that made us stop

Adfin customers experience a late payment rate of 9%. Against an industry baseline of 63%, that's not an incremental improvement - that's a different category of outcome.

Accountants think they're doing a great job. Their clients disagree, strongly.

When Adfin surveyed both sides, accountants gave themselves an 80% satisfaction score. Their clients gave them 8%.

That's not a small gap, it's a completely different reality. And the gap isn't about the quality of the accounting work. It's about everything around it - how responsive the firm feels, how easy it is to pay, how modern the experience is.

Clients aren't comparing their accountant to other accountants anymore. They're comparing them to Amazon, to their bank app, to anything that works effortlessly.

That's Adfin's entire sales pitch compressed into two numbers.

Not 'we'll make you a better accountant.' But 'we'll make your clients feel like you are one.'

The $30 million vote of confidence

This week, Adfin announced an $18 million Series A led by Index Ventures - the firm that backed Revolut, Adyen, and Figma early.

Visionaries Club returned. New investors Stéphane Kurgan, former COO of King, and Andrey Khusid, founder of Miro, joined the round. Total funding now exceeds $30 million in less than two years.

Index backed Adfin at pre-seed, seed, and now Series A. Julia André, Partner at Index, described it as tripling down. That kind of continued conviction at each successive stage is a signal that the internal metrics are tracking closely to what was promised.

 "Index backs founders who have the rare ability to obsess over a problem and build category-defining businesses. We see that same pattern in Tom and Ciprian." — Julia André, Partner, Index Ventures

With this capital, Adfin is moving beyond invoice collection into end-to-end cashflow management - the stated goal being a platform where money moves itself.

Tom Pope, co-founder and CEO, puts it plainly: 'Money movement isn't admin. It's the bloodstream of every company.'

What we're still watching

Adfin has passed the first test convincingly - $30 million raised, 1,500 businesses on the platform, third fastest-growing tech company in Europe. The problem is real, the product addresses it directly, and the investor backing is as credible as it gets.

The expansion from invoice collection to full cashflow management is a significantly harder problem, a larger regulatory surface, and a more crowded competitive landscape. The founders have earned the right to make that bet. Whether it pays off is the next chapter.

For the 50,000 businesses that close every year in Britain because someone didn't pay them on time, the question isn't whether Adfin works. It's whether it arrives in time.