How The UK’s Tougher Late Payment Rules Could Change The Way SMEs Chase Unpaid Invoices

Late payment is one of the biggest financial threats facing small and medium-sized businesses in the UK today, and the government’s tougher approach to payment practices could significantly change how you recover what you are owed. If you run an SME and you are still chasing invoices the same way you were 5 years ago, now is a good time to reassess your approach.

The UK Government introduced the Small Business Protections Bill to Parliament on 19 May 2026. The Bill is designed to strengthen the rules on late payment, give the Small Business Commissioner greater powers, and make larger companies more accountable for how quickly they pay smaller suppliers.

The latest government figures estimate that late payments cost the UK economy around £11 billion a year, close around 38 businesses every day, and leave businesses spending an estimated 133 million hours a year chasing money they are already owed. Businesses are estimated to be owed around £26 billion in late payments at any given time, with affected businesses owed around £17,000 on average.

With new legislation moving through Parliament and growing pressure on larger companies to pay on time, the landscape for commercial debt is shifting. Understanding what is changing and how to position yourself could make a real difference to your cash flow.

What The UK Government Is Proposing

The government has now moved beyond consultation and introduced the Small Business Protections Bill, previously referred to as the Commercial Payments Bill. The core measures include:

• A 60-day cap on payment terms for large firms paying smaller suppliers, with limited exemptions
• Mandatory statutory interest on late payments, set at 8% above the Bank of England base rate
• Stronger powers for the Small Business Commissioner to investigate poor payment practices
• New powers for the Small Business Commissioner to adjudicate payment disputes outside court
• Powers to fine persistent late payers, with potential penalties worth tens of millions for the worst offenders
• Requirements for boards or audit committees of persistently late-paying large companies to publish explanations of poor payment performance and the steps being taken to improve it
• Action to ban the practice of withholding retention payments under construction contracts
• A tighter approach to disputed invoices, so businesses cannot use late or weak disputes as a tactic to delay payment

These are not small tweaks. If the Bill completes the Parliamentary process and becomes law, it would represent the most significant overhaul of UK late payment rules since the Late Payment of Commercial Debts (Interest) Act came into force in 1998.

Why This Matters For SMEs Right Now

Even before the new rules take effect, the shift in political and regulatory attention is creating a window of opportunity for SMEs to push back harder on slow-paying customers. Here is why this is worth paying attention to.

Large businesses are under more scrutiny than ever. If your big corporate customer is late paying you, there is more pressure on them now than there has been for years to sort it out.

The tools available to you are already strong. The existing Late Payment Act already gives many businesses the right to reclaim late payment interest at 8% above the Bank of England base rate, plus fixed compensation charges of £40, £70 or £100 per unpaid invoice, depending on the size of the debt. Reasonable recovery costs may also be recoverable where they exceed the fixed compensation amount. Many SMEs simply do not claim these, and they should.

Your processes matter more when rules change. If legislation tightens and payment terms become more standardised, businesses that already have robust credit control in place will be far better positioned than those that are still winging it.

The Gap Between What The Law Allows And What SMEs Actually Do

This is where things get frustrating. The legal framework to recover unpaid invoices in the UK is already relatively strong for business-to-business debts. The problem is that many SMEs either do not know what they are entitled to, or they feel uncomfortable enforcing their rights because they worry about damaging the customer relationship.

Here is a quick summary of what you can already claim under current law where the Late Payment Act applies:

Many businesses are walking away from hundreds or even thousands of pounds every year simply by not invoicing these charges. If you have not looked at 5 ways to get your customers to pay on time, it is worth doing that alongside understanding what you can recover legally.

How Tougher Rules Could Change Your Collections Process

If the proposed reforms become law, you will likely need to adjust how you manage credit and collections across the board. Here are the main areas that could change.

1. Shorter Payment Windows Mean Tighter Monitoring

If large firms are limited to a 60-day payment term when paying smaller suppliers, you will need your credit control processes to be sharp from day 1. Chasing invoices informally and hoping for the best will not cut it.

Aged debtors reporting that drives action is a good place to start if you want to tighten up how you track overdue accounts.

2. Your Contracts Need To Reflect The New Reality

If you are still using payment terms you drafted years ago, they may not serve you well under a tighter regulatory environment. Contract clauses that reduce late payment are increasingly important, and getting these right in writing before work starts is far easier than arguing about them later.

This is especially important if you work with larger customers that currently impose long payment terms, complex approval processes or informal dispute windows.

3. Early Escalation Will Become More Common

As the rules tighten and the cultural expectation around late payment shifts, businesses that escalate quickly will usually recover more. Sitting on an unpaid invoice for 90 days before doing anything is a habit that costs you money.

Understanding when to escalate an invoice to debt collection services is a practical step that many businesses get wrong.

4. Pre-Legal Steps Will Carry More Weight

Tougher enforcement means the formal steps you take before litigation matter more. Sending a late payment demand letter that is properly worded and clearly references your statutory rights puts you in a much stronger position, whether you end up pursuing the debt formally or not.

A well-drafted demand letter also shows the debtor that you understand your rights and are prepared to enforce them.

What You Should Do Before The New Rules Take Effect

You do not need to wait for Parliament to finish the legislative process before you improve your process. In fact, getting ahead of the changes is the smartest position you can be in.

Here is a practical checklist:

• Review your current payment terms and make sure they are clear, enforceable and commercially sensible
• Start running a business credit check on new customers before you extend credit
• Set up proper aged debtor reports and review them weekly
• Train whoever handles your invoicing on what the Late Payment Act entitles you to claim
• Decide at what point you will escalate and stick to that decision
• Make sure disputes are recorded, investigated and responded to quickly
• Consider whether credit control outsourcing would give you a more consistent and professional collections process without adding headcount
• Look at company cashflow solutions if late payment is already creating pressure on your working capital

When Chasing In-House Is Not Enough

There comes a point with some debtors where your internal efforts are not going to move things forward. Maybe the customer has gone quiet, started disputing the invoice, is delaying repeatedly, or is clearly in financial difficulty. This is where a specialist debt recovery service adds real value.

A professional collections agency can take over the process in a way that keeps things formal and well-documented, which matters a great deal if you eventually need to take legal action. They also know how to apply the right level of pressure without crossing legal or ethical lines, which protects your business reputation.

If you suspect a customer may be heading toward insolvency, it is worth taking advice on insolvency services early. Businesses that act quickly when a debtor shows signs of financial distress often put themselves in a stronger position than those who wait and hope.

If you have tried the usual channels and cannot locate the debtor, a debtor tracing service can help you track them down before the debt becomes unrecoverable.

For a broader understanding of the process, it is worth reading about the crucial steps in the debt collection process so you know exactly what options are available at each stage.

The Bigger Picture: Systemic Change Takes Time

It is important to be realistic. Even if the Small Business Protections Bill becomes law, enforcement will take time to bed in and not every large business will change its behaviour overnight. The firms that do best in this environment are the ones that do not rely on the law alone to get paid.

Building a culture around prompt payment starts with how you communicate from the very first invoice. The ultimate checklist to making the perfect invoice is a genuinely useful resource if you want to reduce disputes and friction at the point of billing.

You should also understand that handling part and short payments is something many SMEs manage badly. Accepting partial payment without formally documenting the balance can make future recovery much harder.

If disputes do arise, knowing the difference between mediation and litigation for unpaid invoices can save you significant time and money.

And for those with overseas customers, be aware that tougher UK rules will not automatically solve the practical challenges of recovering from foreign debtors. You will want a separate strategy for those situations. Reading about effective strategies for collecting on a debt can give you a broader framework to work from.

FAQs

When are the new UK late payment rules expected to come into force?

The Small Business Protections Bill was introduced to Parliament on 19 May 2026. It still needs to complete the Parliamentary process before becoming law, and detailed commencement dates will depend on the final legislation and implementation timetable. SMEs should prepare now rather than waiting until the rules are already in force.

Can I charge interest on overdue invoices without a contract clause?

Yes, where the Late Payment of Commercial Debts (Interest) Act applies. The current framework allows statutory interest at 8% above the Bank of England base rate on qualifying business-to-business debts, along with fixed compensation. The new reforms are intended to make statutory interest a mandatory feature of commercial contracts and remove the ability to negotiate weaker alternatives.

What happens if a customer disputes the invoice to avoid paying?

A disputed invoice is different from a straightforward late payment, but the dispute should be genuine and raised promptly. The government’s reform package is intended to stop businesses using late or weak disputes as a tactic to delay payment. You should address the dispute formally, keep a written record, and document every response. If the dispute is unreasonable, a professional collections agency experienced in contested debt collection can help you move things forward.

Is it worth using a debt collection agency for smaller invoices?

In many cases, yes. Many agencies work on a no win no fee basis, which means you are not taking on unnecessary financial risk. Even for smaller invoices, acting quickly and formally often prompts payment faster than internal chasing alone.

What can I do if the debtor has disappeared?

A specialist debtor tracing service can help you locate a debtor even if they have moved, changed company name, or appear to have gone to ground. Acting quickly here is essential, as the trail can go cold.

Will the new rules apply to every business invoice?

The Bill is focused on improving payment behaviour, especially where large firms pay smaller suppliers. Some exemptions are expected, including certain situations involving large-to-large business contracts, cases where the purchaser is the smaller party, and import or export arrangements. Until the final legislation is passed, businesses should treat the proposals as a strong direction of travel rather than assume every detail is already settled.

Take Control Before The Rules Force You To

The UK’s late payment problem is not new, but the pressure for change has clearly grown. Whether the final legislation looks exactly like the current Bill or changes during Parliament, the direction of travel is clear: businesses that pay late are facing more scrutiny, and creditors that chase formally and early are putting themselves in a stronger recovery position.

If you want to improve how you recover unpaid invoices and protect your cash flow, working with a trusted debt collection agency UK businesses already rely on can make a significant difference. Taurus Collections works with SMEs across a wide range of industries, offering everything from pre-legal demand letters to full debt recovery and insolvency support.

Get in touch with the team today to find out how we can help you recover what you are owed and build a more resilient credit control process for the future.