Late Payment Laws in the UK: What Every Business Owner Needs to Know
Late payments remain one of the biggest challenges facing UK businesses. Whether you're a freelancer, contractor, consultant, or SME owner, overdue invoices can have a serious impact on cash flow, growth plans, and day-to-day operations.
Fortunately, UK legislation gives businesses clear rights when it comes to recovering overdue payments. Understanding these rights can help you protect your business, recover unpaid debts, and encourage customers to pay on time.
Why Late Payment Law Matters
For many businesses, cash flow is the lifeblood of operations. When customers pay late, it can create a domino effect that impacts supplier payments, payroll, investment opportunities, and overall business stability.
To help address this issue, the UK introduced the Late Payment of Commercial Debts (Interest) Act 1998, which allows businesses to charge interest and recover costs associated with chasing overdue invoices. Knowing and exercising these rights can make a significant difference when dealing with persistently late-paying customers.
What Does the Law Cover?
The Act applies to contracts for the supply of goods and services between:
One business and another business (B2B)
A business and a public authority
Examples include:
A marketing agency providing services to a client business
A subcontractor working for a construction firm
A supplier providing goods to a local authority
The legislation does not cover:
Consumer transactions
Employment contracts
When Is a Payment Considered Late?
A payment becomes late when the agreed payment date passes without settlement.
If there is no agreed payment date, the payment becomes overdue 30 days after the later of:
The customer receiving the invoice
The goods or services being supplied
How Much Interest Can You Charge?
Businesses have the legal right to charge statutory interest on overdue invoices.
The formula is:
8% + Bank of England Base Rate
For example, if:
Outstanding invoice: £2,500
Base rate: 3.75%
Total statutory interest rate: 11.75%
Interest Calculation Example
Step 1:
£2,500 × 11.75% = £293.75 annual interest
Step 2:
£293.75 ÷ 365 = £0.80 per day
Step 3:
If payment is seven days late:
£0.80 × 7 = £5.60 interest
While this may seem like a small amount initially, interest continues to accumulate until the debt is cleared, creating a strong incentive for customers to settle outstanding invoices promptly.
Debt Recovery Charges
In addition to interest, businesses can claim a fixed compensation fee for the cost of recovering the debt.
The amount depends on the value of the overdue invoice:
Debt Value | Compensation Fee |
Up to £999.99 | £40 |
£1,000 to £9,999.99 | £70 |
£10,000 or more | £100 |
These charges can be added once per overdue invoice.
Where debt recovery costs exceed the fixed compensation amount, businesses may also be entitled to claim reasonable additional costs, such as debt collection agency fees.
How to Apply Interest and Charges
If you decide to enforce your rights under the Act:
Calculate the statutory interest due.
Add the relevant debt recovery charge.
Issue a revised invoice showing the additional costs.
Clearly explain why the charges have been added.
Continue updating the interest calculation if the debt remains unpaid.
Maintaining a professional and factual approach often produces better results than aggressive collection tactics.
Four Practical Ways to Reduce Late Payments
1. Send Prompt Payment Reminders
As soon as an invoice becomes overdue, send a reminder highlighting:
Invoice number
Original due date
Amount outstanding
Automated reminders can significantly improve collection rates while reducing administration time, this facility is available in Xero and straightforward to implement business wide or just for individual customers.
2. Send a Formal Late Payment Letter
If reminders are ignored, issue a formal letter stating:
The outstanding balance
Your intention to charge statutory interest
Any applicable recovery fees
A revised payment deadline
Often, the formal nature of the communication is enough to prompt payment.
3. Use Your Legal Rights
Where a customer continues to ignore requests for payment, apply statutory interest and debt recovery charges.
In more serious cases, businesses may consider:
Debt recovery services
Solicitors' letters
County Court claims
Legal action should generally be viewed as a last resort after attempts at resolution have failed.
4. Protect Future Trading Relationships
Preventing late payment is always preferable to chasing payment.
Best practice includes:
Clearly defined payment terms
Accurate invoices
Regular statements
Automated reminders
Credit checks for new customers
Automated payment collection such as Direct Debit or GoCardless
For repeat offenders, it may be necessary to reduce or remove credit facilities and require upfront payment.
Proposed Changes to Late Payment Rules
The UK Government has recently consulted on measures designed to tackle late payment practices more effectively.
Proposals include:
Maximum payment terms of 60 days between businesses
A future reduction to 45-day payment terms
Mandatory statutory interest provisions
A 30-day deadline for invoice disputes
Additional reporting requirements
Financial penalties for businesses with persistent poor payment practices
While these changes have not yet been fully implemented, they signal a stronger stance against late payment and increased support for small businesses.
Frequently Asked Questions
Are Late Payment Charges Legal?
Yes. UK law specifically allows businesses to charge statutory interest and debt recovery costs on overdue commercial invoices.
Can I Charge Interest Immediately?
If a payment date has been agreed contractually, interest can be charged once that date has passed.
Can I Charge Interest on Disputed Invoices?
No. Interest cannot usually be applied while a genuine dispute remains unresolved.
Does the Law Apply Across the UK?
Yes. The Late Payment of Commercial Debts (Interest) Act 1998 applies throughout England, Scotland, Wales, and Northern Ireland.
Final Thoughts
Late payment is more than an inconvenience. It can undermine profitability, disrupt cash flow, and place unnecessary pressure on growing businesses.
The good news is that UK law gives businesses powerful tools to recover what they are owed. By understanding your rights, enforcing clear payment terms, and making use of statutory interest and recovery fees where necessary, you can encourage prompt payment and protect your company's financial health.
The most effective strategy combines strong processes, consistent communication, and a willingness to enforce your rights when customers fail to meet agreed payment terms. Businesses that take a proactive approach to credit control are often the best positioned for long-term financial stability and growth.
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