The UK Late Payment Legislation 2026: What It Means for Small Businesses

If you invoice other businesses and wait too long to get paid, the government has finally taken notice.

On 24 March 2026, the UK announced what it's calling the most significant package of reforms to tackle late payment in over 25 years - a genuine overhaul of an area of law that many small business owners had long since stopped expecting help from.

This post sets out what has actually changed, what it means in practice, and crucially - what it still cannot do for you.

1. What Changed, and Why It Matters

The existing legal framework for late payment has been in place since 1998. While it gave businesses certain rights on paper, the enforcement mechanism was effectively toothless - most small businesses either did not know their rights, or were too worried about damaging relationships to use them.

Late payment currently costs the UK economy an estimated £11 billion every year, and forces 38 businesses to close every single day.

The 2026 reforms are designed to change that — not just by strengthening the rules, but by creating real enforcement with real consequences. The full government announcement is on GOV.UK if you want to read the detail.

2. What the Legislation Actually Covers

There are four main changes to understand.

A 60-day cap on payment terms. Large businesses will be legally required to pay smaller suppliers within 60 days of receiving a valid invoice. Any contractual term imposing a longer payment period will be unenforceable. This directly targets the practice of large companies dictating 90 or 120 day terms to suppliers who have little power to push back.

Mandatory statutory interest. Statutory interest at 8% above the Bank of England base rate will become truly mandatory. Any clause attempting to waive or lower statutory interest will be void. Previously, this right existed but could be quietly contracted away. Not any more.

A 30-day dispute deadline. Clients must raise any dispute within 30 days of receiving the invoice. If they fail to dispute within that window, the invoice is deemed accepted and full payment becomes due. This closes one of the most common delay tactics - the last minute "dispute" raised weeks after an invoice was first submitted.

A strengthened Small Business Commissioner. The Small Business Commissioner will have powers to investigate businesses suspected of poor payment practices, resolve payment disputes without court proceedings, and impose fines. Large companies that persistently pay late could face multi-million pound penalties and be required to publish explanations for poor payment performance at board level. If you are already dealing with a persistent late payer, the Commissioner's office is worth knowing about.

It is worth noting: these changes will require both primary and secondary legislation, so implementation will not happen overnight. The measures were announced in March 2026 and exact implementation dates are yet to be confirmed, though industry bodies expect the first changes to land by late 2026.

3. What It Cannot Do for You

This is the part most people miss - and it matters.

The legislation is reactive. It sets rules for what happens after a payment is late. It gives you rights and, increasingly, enforcement tools. But it does not send the invoice. It does not chase the client. It does not know that one of your accounts has been quietly drifting for three weeks. And it does not preserve your client relationship while the money comes in.

The businesses that will struggle to use these protections are those without a consistent credit control process, because you cannot enforce rights you do not know you have, or apply interest to an invoice you have not properly tracked.

The law raises the floor. Your process is what determines how much of that floor you actually stand on.

4. The Businesses That Will Benefit Most - and Why

The small businesses best placed to benefit from these reforms are those that already have clear, consistent credit control in place. Here is why.

A business with structured payment terms, professional invoicing, and a documented chasing process is already operating in the spirit of the new rules. When a dispute needs to be raised, they have records. When interest becomes applicable, they have tracked the date. When a conversation with the Small Business Commissioner is necessary, they have evidence.

The reforms give those businesses more leverage than they have ever had.

For businesses running credit control informally - a reminder here, an awkward conversation there - the new protections are harder to use, because the infrastructure to support them is not there.

The legislation does not sort that out for you. That part is still down to you.

5. What to Do Now: Building the Process That Makes the Legislation Useful

Whether you handle credit control yourself or work with someone to do it for you, the practical steps are the same.

Get your payment terms documented and consistent. They should appear on every contract and every invoice. If you have been operating on informal terms, now is a good time to formalise them.

Invoice promptly and accurately. The 60-day clock starts from receipt of a valid invoice. Errors and delays are your problem, not your client's.

Track your accounts. Know what is current, what is approaching overdue, and what has been chased. A simple, well used tracker beats a complicated system that nobody updates.

Include your right to charge interest. You have had this right since 1998. The new legislation makes it non-negotiable. Make sure it is written into your terms.

Act on overdue invoices early and consistently. The law can support you when things go wrong. A good process means fewer things go wrong in the first place.

If you want to build this yourself, the INcharge Credit Control Foundations Kit is a practical starting point - a £250 digital product that gives you the structure, the templates, and the process to manage credit control properly from day one.

If you would rather hand the whole thing over, take a look at how INcharge's Core Service works - tiered monthly retainers starting at £550, with transparent pricing and no quote forms.

6. Ready to Make the Legislation Work for You?

The rules are changing. That is good news. But the businesses that benefit will be the ones that have a process in place to back them up.

If you are not sure where to start - or you are ready to stop spending your time chasing invoices altogether - book a free discovery call and we can talk through what would work best for your business.

You did the work. You should get paid.