Late payments UK: your rights, charges and prevention

Published Tuesday 21 April 2026

Table of contents

• When do payments become legally late?
• Understanding UK late payment legislation and your rights
• The impact of late payments on your small business
• How to set up effective credit control
• Understanding late payment charges and their effects
• What the UK government's late payment crackdown means for your business
• How can your small business get paid on time?
• FAQs on late payment

Key takeaways

• Recognize that a payment becomes legally late the day after your agreed due date passes, and if no terms are set, UK law automatically applies a 30-day rule from the date your customer receives your invoice.
• Implement credit control measures before work begins by running credit checks on new customers and setting clear, written payment terms that include due dates, accepted payment methods, and late payment fees.
• Claim your legal right to charge statutory interest at 8% plus the Bank of England base rate, plus fixed compensation of £40, £70, or £100 depending on the debt size, on any overdue business invoice, even if your contract does not mention these charges.
• Use automated payment reminders to reduce the time spent chasing invoices, as businesses can save up to 15 hours per week and get paid up to 54 days sooner compared to manual follow-up.

When do payments become legally late?

Understanding when payments become legally late helps you take timely action.

A payment becomes legally late the day after your agreed due date passes. If you haven't set a date, UK law triggers the 30-day rule automatically.

The 30-day rule applies in these situations:

• no agreed terms: payment is late 30 days after the customer receives your invoice
• service-based work: the 30-day clock starts when you complete the service, if that's later than invoice delivery
• public authorities: the same 30-day deadline applies to government bodies

Understanding UK late payment legislation and your rights

UK law provides protections for businesses dealing with late payments.

The Late Payment of Commercial Debts (Interest) Act 1998 protects your business when clients fail to pay on time. This legislation applies to qualifying business-to-business debts arising under contracts for the supply of goods or services.

As a supplier, you have statutory rights to claim interest and fixed compensation on overdue commercial payments. You can exercise these rights even if you didn't mention them in your original contract.

The difference between statutory and contractual payment terms affects your rights. If your contract provides a substantial remedy for late payment, statutory interest under the Act may not apply. However, if no terms are agreed, the statutory default of 30 days takes effect.

The impact of late payments on your small business

Late payments affect more than just your bank balance.

Late payments directly threaten your business's survival by disrupting cash flow and straining relationships. When invoices go unpaid, the effects ripple through every part of your operations.

The scale of the problem in the UK is significant:

• 60% of small businesses are currently owed money from late payments
• 22% of SMEs and freelancers experienced an increase in late payments last year
• 13% had to write off money owed to them entirely

A single overdue invoice can prevent you from paying suppliers or staff on time.

When a large percentage of your income depends on one or two invoices, the effects extend beyond finances.

Supplier relationships suffer. A late payment might force you to delay paying your own suppliers. This domino effect was seen when 48% of companies withheld payment to suppliers after receiving their own payments late. They may end the partnership, leaving you to find new suppliers and start over.

Growth investments stall. Instead of replacing old equipment, you hold onto cash. This common trend shows how cash flow anxiety dampens hiring intentions and capital investment. This impacts efficiency and frustrates teams working with outdated tools.

Additional consequences of late payments include:

• staff payment delays: missing payroll deadlines damages employee trust
• reduced purchasing power: limiting essential supply orders affects operations
• operational restrictions: pausing business activities stalls momentum
• financial visibility issues: obscuring true performance hinders decision-making
• cash flow reduction: shrinking working capital blocks growth opportunities

Addressing late payments promptly helps you avoid these problems. Picking up on overdue payments quickly gives you more time to cushion the impact of reduced cash flow.

How to set up effective credit control

Prevention is better than cure when it comes to late payments.

Credit control is a set of processes that prevent late payments before they happen. Rather than chasing debts after they occur, effective credit control protects your cash flow from the start through simple checks and systematic follow-up.

Carry out credit checks on new customers

One key step is checking potential customers before you work with them.

Credit checks reveal a customer's payment history before you commit to working with them. A quick check shows whether they pay on time, have outstanding debts, or pose a risk of non-payment.

Run a credit check before agreeing to any significant contract. This simple step can save hours of chasing and potential write-offs later.

Set clear payment terms upfront

Setting expectations from the start prevents disputes later.

Clear payment terms eliminate confusion and strengthen your position if payments become overdue. Agree these details before any work begins.

Your payment terms should specify:

• due date: the exact date payment is required
• payment methods: which options you accept
• late payment fees: interest rates and compensation you'll charge
• contract inclusion: document terms in writing for legal protection

Review and analyse your debtor book

Keeping track of outstanding payments helps you act quickly.

Regularly review who owes you money. This helps you spot patterns with certain clients and identify invoices that are creeping towards their due date. Staying on top of your debtor book means you can act quickly and keep cash flowing.

Understanding late payment charges and their effects

You have legal rights to charge fees on overdue invoices.

Late payment charges are fees you can legally add to overdue invoices in the UK. While 84% of companies include penalty clauses in their contracts, only 9% actually used the clause in practice. This means many businesses miss out on charges that encourage prompt payment and compensate you for the cost of chasing debts.

What you can charge:

• statutory interest: 8% plus the Bank of England base rate on the outstanding amount
• fixed compensation: £40 for debts under £1,000, £70 for £1,000 to £9,999, £100 for £10,000 or more
• combined claims: you can charge both interest and compensation together

These rights apply even without contract terms. For more information, read the guidance on charging interest on late payments.

Navigating the late payment legislation

Understanding the law helps you claim what you're owed.

The Late Payment of Commercial Debts (Interest) Act 1998 gives you automatic rights to charge interest on overdue business invoices.

The Act covers:

• qualifying debts: money owed for goods or services under a contract
• scope: all business-to-business transactions in the UK
• interest start date: the day after your agreed payment date or 30-day period ends
• automatic entitlement: your rights apply whether or not you stated them upfront

Once statutory interest begins, you can also claim fixed compensation:

• debts under £1,000: £40 fixed sum
• debts £1,000 to £9,999: £70 fixed sum
• debts £10,000 or more: £100 fixed sum

To claim these charges, send a new invoice with separate lines for the original amount, compensation, and interest. Calculate interest on the day you send the invoice, as it accrues daily.

The Small Business Commissioner provides a free late payment interest calculator to help with the maths.

Invoice requirements for charging interest

When claiming late payment charges, your invoice format matters.

Your invoice for late payment charges must clearly itemise each element. Follow these steps:

1. List the original amount: Show the unpaid invoice total
2. Add compensation: Include the fixed sum (£40, £70, or £100) on a separate line
3. Calculate interest: Work out interest up to the day you send the invoice
4. Send promptly: Issue the invoice on the same day you calculate interest

What the UK government's late payment crackdown means for your business

Recent policy changes affect how businesses handle payments.

The UK government has introduced new measures to tackle the culture of late payments, such as requiring companies bidding for large government contracts to pay suppliers within 55 days. These reforms aim to protect small businesses from cash flow disruptions caused by larger companies paying late.

Key proposals include stricter enforcement of 30-day payment terms and new transparency requirements for large businesses. Companies will need to report their payment practices more clearly, making it easier for you to see how quickly a potential client pays their bills.

As a supplier, these changes give you more leverage to demand prompt payment. As a customer, you must ensure your own payment practices align with the new standards to avoid penalties and maintain strong supplier relationships.

How can your small business get paid on time?

With the right systems in place, you can reduce late payments significantly.

Getting paid on time requires a combination of clear invoicing, easy payment options, and systematic follow-up. Prevention is faster and cheaper than chasing overdue debts.

Many businesses spend more than four hours a week chasing payments, contributing to an estimated 133 million hours of staff time lost across the UK economy each year. Automation changes this:

• save time: reduce manual follow-up tasks by up to 15 hours per week
• speed up payments: get paid 54 or more days sooner with automated reminders
• protect relationships: maintain professionalism while pursuing what you're owed

FAQs on late payment

Here are answers to common questions about dealing with late payments in the UK.

When does a payment legally become late in the UK?

A payment becomes legally late the day after your agreed due date. If you haven't agreed on terms, the payment is late 30 days after the customer receives your invoice or you complete the service, whichever is later.

Can I charge interest on late payments without mentioning it in my contract?

Yes. The Late Payment of Commercial Debts (Interest) Act 1998 gives you automatic rights to charge statutory interest and fixed compensation on overdue business invoices, even if your contract doesn't mention these charges.

How much can I charge for late payments?

You can charge statutory interest at 8% plus the Bank of England base rate on the outstanding amount. You can also claim fixed compensation: £40 for debts under £1,000, £70 for debts between £1,000 and £9,999, and £100 for debts of £10,000 or more.

What's the best way to prevent late payments?

Set clear payment terms upfront, carry out credit checks on new customers, send invoices promptly, and follow up systematically. Use automated reminders to chase payments without damaging relationships.

How do late payments affect small businesses?

Late payments disrupt cash flow, prevent you from paying suppliers or staff on time, damage supplier relationships, and force you to delay growth investments. Around 60% of small businesses are currently owed money from late payments.