Late payments remain one of the most damaging cash-flow issues facing UK small businesses. According to FSB research, around 50,000 small businesses close each year due to late payments, while the UK government estimates SMEs are owed over £20 billion in unpaid invoices at any given time.
A single overdue invoice can mean missed payroll, delayed supplier payments, or a halt to growth plans. For owner-managed businesses in particular, the time spent chasing late payment is time taken from sales, delivery and product development. This guide sets out what late payments are in legal terms, how to prevent them, your statutory rights when an invoice goes overdue, and the practical steps that get money in the door without burning client relationships.
Yousign helps UK SMEs sign contracts faster so that invoicing starts sooner and payments arrive on time, with full legal validity and a complete audit trail on every signed agreement.
Summary in brief:
- Definition: A payment is late when not received by the agreed due date, or 30 days after invoice or delivery under UK law (Late Payment of Commercial Debts Act 1998).
- Your statutory rights: You can charge 8% above the Bank of England base rate as interest, plus fixed compensation of £40–£100 depending on invoice value.
- Prevention is key: Clear written payment terms, credit checks, prompt invoicing, and pre-due-date reminders significantly reduce late payment risk.
- Escalation sequence: Start with polite reminders (days 1–7), escalate to formal letters (days 14–30), then consider debt recovery or legal action after 30 days.
- Yousign advantage: Faster contract execution means invoices go out immediately, shortening your payment cycle and protecting cash flow.
What Counts as a Late Payment in the UK?
A payment is considered late under UK law when it has not been received by the agreed due date in the contract. If no payment terms have been agreed, the default under the Late Payment of Commercial Debts (Interest) Act 1998 is 30 days from the date the invoice was sent or the goods or services delivered, whichever is later.
For business-to-business transactions, the rules apply to commercial contracts of any size. They give suppliers a statutory right to charge interest on overdue invoices, claim a fixed sum for the cost of recovering the debt, and recover reasonable costs of pursuing the debt where the fixed sum does not cover them.
Good to know
The clock for late payment starts on the contractual due date, not the date the customer chooses to pay. A long-agreed payment term such as 60 days does not in itself make a payment late, but anything past that agreed date does, and statutory interest begins accruing automatically.
Why Do Customers Pay Late?
Understanding why a client is paying late is the first step to choosing the right response. Late-paying customers tend to fall into four recognisable categories:
Type | Behaviour | Best response |
|---|---|---|
Disorganised payer | Poor admin, lets invoices slip | Automated reminders before and after due date |
Cash-strapped client | Wants to pay but lacks funds | Early honest conversation about a payment plan |
Deliberate delayer | Uses payment terms as free credit | Firm process, prompt escalation, statutory interest |
Disputed-invoice case | Real or perceived issue with work or paperwork | Resolve the dispute first, then collect |
Diagnosing which type you are dealing with avoids spending time on the wrong intervention.
To note
Misdiagnosing your customer type can waste valuable time and damage relationships. A disorganised payer needs reminders, while a deliberate delayer requires firm escalation and statutory interest claims. Always assess the situation before choosing your response.
How to Prevent Late Payments Before They Happen
Most late-payment problems are preventable through better contracting, invoicing and onboarding. The most effective measures are:
Late Payment Prevention Checklist
Run credit checks on new clients
Use Experian, Creditsafe or Dun & Bradstreet before extending credit to assess financial health and payment history.
Set clear payment terms in writing
Include due date, accepted methods, and interest/fees that apply if payment is late on every contract and invoice.
Invoice promptly and accurately
Send invoices automatically the moment delivery is confirmed to start the payment clock immediately.
Make it easy to pay
Offer bank transfer, online payment links, card payment and direct debit options to remove friction.
Send a polite reminder before the due date
A friendly nudge 3–5 days before payment is due shifts your invoice up the priority list.
Build relationships with accounts teams
Contact the finance department directly, not just the buyer, so you have a point of contact when issues arise.
Use electronic signatures for faster contracts
Speed up contract execution so invoicing begins sooner and payment cycles shorten.
Vague or missing payment terms are the most common reason that statutory remedies are hard to enforce. For more on the systems behind invoice efficiency, our guide to optimising your B2B invoicing workflow covers the full lifecycle from quote to cash.
What to Do When a Payment Becomes Late
When an invoice goes overdue, a clear escalation sequence gives you the best chance of being paid quickly without damaging the relationship.
How to Chase a Late Payment: Step-by-Step
1 Day 1 to 7: Send a polite reminder
Email restating the invoice number, amount and original due date. Ask whether there is any issue preventing payment.
2 Day 7 to 14: Make a phone call
Contact the accounts team directly. Email is easy to ignore; a call surfaces disputes and signals active follow-up.
3 Day 14 to 30: Send a formal letter
Reference contractual terms, your right to claim statutory interest, and the next steps if the invoice remains unpaid.
4 Day 30 onward: Escalate formally
Claim statutory interest and compensation, instruct a debt recovery firm, or begin legal action through Money Claim Online.
Important
Always keep written records of every reminder, conversation and dispute. If the matter ends up in legal proceedings, well-organised correspondence often determines whether and how quickly you recover.
Your Statutory Rights on Late Payments
Under UK law, suppliers have several remedies when a B2B invoice is paid late:
- Statutory interest at 8% above the Bank of England base rate on overdue commercial debts. The right is automatic and does not need to be in the contract.
- Fixed compensation for the cost of recovering the debt: £40 for debts under £1,000, £70 for debts between £1,000 and £9,999.99, and £100 for debts of £10,000 or more.
- Recovery costs above the fixed sum, including legal fees and the costs of using a debt recovery service.
Detailed guidance on all three remedies is published on GOV.UK's late commercial payments page, which sets out how to calculate interest and the wording to use in correspondence. For escalated debts, the Small Business Commissioner offers a free complaints service for disputes with larger customers; guidance is on the Small Business Commissioner's website.
When and How to Escalate
Most late payments are resolved without formal action. Where they are not, several escalation routes exist depending on the debt size and the relationship.
- Letter before action. A formal demand stating that legal proceedings will commence if payment is not made within a defined period (commonly seven to fourteen days). This often prompts payment without the need to issue a claim.
- Money Claim Online. For undisputed debts under £100,000, you can issue a claim through the small claims court via Money Claim Online. The fee scales with the debt size and is recoverable from the debtor if the claim is successful.
- Debt recovery agencies. For larger or older debts, instructing a regulated debt recovery firm is often more cost-effective than self-managing the process. Fees are typically a percentage of the recovered amount, and reputable agencies will only charge on success.
- Statutory demand and winding-up petition. For debts of £750 or more against a limited company, a statutory demand can be issued, followed by a winding-up petition if the debt remains unpaid. This is a serious step that should not be used as a routine collection tool, but is highly effective where the debtor has the means to pay and is choosing not to.
Close the Payment Gap Faster
Sign agreements digitally in minutes, not days with Yousign
Protecting Your Cash Flow While You Recover
Recovery takes time, so several measures protect day-to-day cash flow in the meantime. Credit insurance covers the risk of customer non-payment for an annual premium. Invoice finance releases cash against unpaid invoices, usually within 24 to 48 hours, for a fee. A revolving overdraft provides headroom for unexpected gaps.
Used selectively for high-risk customers or seasonal spikes, these tools prevent a single late payment from becoming a wider business problem.
Frequently Asked Questions About Late Payments
What is the statutory interest rate on late commercial payments in the UK?
You can charge 8% above the Bank of England base rate on overdue commercial invoices, plus a fixed sum for recovery costs. The statutory interest rate automatically adjusts with the Bank of England base rate, which is reviewed regularly by the Monetary Policy Committee (which meets eight times per year). You can check the current base rate at any time on the Bank of England website.
How soon can I take legal action over an unpaid invoice?
There is no minimum waiting period, but most businesses send a formal letter before action and allow a final period (typically seven to fourteen days) for payment before issuing a claim. Acting too quickly can damage relationships and weaken your case.
Can I add late payment fees to my invoices?
Yes, provided the terms are clearly stated in your contract or terms of business. Even without a contract clause, statutory interest and compensation apply automatically for B2B debts.
Should I sign contracts electronically to speed up payment?
Yes, in many cases. Electronic signatures are legally valid in the UK under the Electronic Communications Act 2000 and the UK's implementation of eIDAS regulations. Faster contract execution shortens the gap between agreement and the start of work, which in turn shortens the gap to first invoice. For SMEs working with multiple clients, this is one of the most direct ways to bring revenue forward.
What records should I keep on disputed invoices?
Keep a complete paper trail: the original contract, the invoice, all reminder emails, notes of any phone calls (with dates and the names of the people you spoke to), and any written admissions or denials from the customer. If the matter ever reaches a tribunal or court, this documentation usually determines who wins and how quickly.
Do late payments affect my business credit score?
Late payments you receive do not directly affect your business credit score, but they can harm your financial stability if they force you to miss your own payments to suppliers or lenders. Conversely, consistent late payments you make to others will damage your credit rating and make it harder to secure financing.
Can I stop work if a client pays late repeatedly?
Yes, if payment terms in your contract allow it. Many contracts include clauses permitting suspension of services or delivery if invoices remain unpaid beyond a certain period. Always send written notice before suspending work, referencing the contract clause and giving a final deadline to pay.
Get Paid Faster With Better Contracts and Invoicing
Late payments are a cash-flow problem, but they are also a process problem. The businesses that suffer most have weak contracts, slow invoicing and inconsistent follow-up. Those that recover quickly have clear terms, automated reminders, and the appetite to escalate when needed.
Yousign helps UK SMEs reduce the time between agreement and payment by enabling contracts to be signed digitally on any device, with full legal validity under eIDAS and a complete audit trail. Faster execution means faster invoicing and fewer disputes about when the clock started, and the audit trail removes the most common evasion route used by deliberate delayers.
Yousign helps UK businesses sign contracts digitally so invoices go out faster and payments arrive sooner.
