How to handle late payments as a tradesperson (UK guide)
Late payment is one of the most persistent problems in the trade industry. The average UK trade business waits 34 days beyond its invoice due date to receive payment from commercial clients, and even residential customers regularly pay late when there is no clear system in place. This guide covers everything from setting terms upfront to statutory interest rights and small claims court — with practical scripts you can use at every stage.
The late payment problem
A sole trader doing £8,000/month in invoiced work and waiting an average of 34 days past due date is effectively giving their clients an interest-free loan of around £9,000 at any given time. That is money sitting in someone else's account while you are covering materials, van payments, insurance premiums and your own wages.
The problem is almost always structural rather than personal. Customers who pay late do so because the payment process is unclear, inconvenient, or because they have learned — from you — that there are no consequences for waiting. A clear system, communicated from the start and enforced consistently, eliminates most late payment problems before they begin.
Setting terms upfront
Payment terms need to be agreed before work starts, not mentioned for the first time on the invoice. This means including them on your quote and having the customer sign or approve the quote before you begin. If you use digital quoting — as with Trade2Base — the customer's e-signature on the quote is evidence that they accepted your terms.
Recommended wording for your quotes and invoices:
Payment terms wording
“Payment is due within 7 days of invoice date. We accept BACS transfer, card payment and cash. Invoices unpaid after 14 days are subject to statutory late payment interest under the Late Payment of Commercial Debts (Interest) Act 1998, calculated at 8% above the Bank of England base rate, plus reasonable debt recovery costs.”
For residential customers (who are not covered by the commercial late payment legislation), the deterrent effect of stating this clearly is still significant — most customers simply do not want the admin of a dispute. You can also consider requesting a deposit of 30–50% on larger jobs, which reduces your exposure and is standard practice in the construction industry.
The 3-reminder sequence
A consistent, graduated reminder sequence resolves the majority of late payments without requiring a difficult conversation. The sequence should be automatic, polite, and firm — escalating in tone as time passes.
Payment reminder timeline
“Hi [name], just a friendly nudge that invoice [number] for £[amount] was due on [date]. No worries if it's already in the post — if not, you can pay by card via the link below or BACS to [account details]. Thanks!”
“Hi [name], I wanted to follow up on invoice [number] for £[amount], now 7 days overdue. Could you let me know when we can expect payment, or arrange a call if there is an issue? Payment link is below.”
“This is a final notice for invoice [number] for £[amount], now 14 days overdue. If payment is not received within 7 days, we will be adding statutory late payment interest at 8% above the Bank of England base rate and may refer the debt to a collection service. Please pay via [payment link] or contact us immediately to discuss.”
UK statutory interest rights
The Late Payment of Commercial Debts (Interest) Act 1998 gives UK businesses the right to charge statutory interest on overdue commercial invoices. The rate is 8% above the Bank of England base rate — so at a base rate of 4.25%, the statutory interest rate is 12.25% per annum. You can also claim a fixed debt recovery fee of £40 for invoices under £1,000, £70 for invoices between £1,000 and £9,999, and £100 for invoices of £10,000 or more.
Note that the statutory interest legislation applies to business-to-business transactions. For residential customers, the contractual interest rate in your payment terms applies instead — which is why including interest language in your terms (not just on the invoice) is important.
You do not need to charge statutory interest to be entitled to it — but mentioning it in your final notice is often enough to prompt payment without having to follow through.
When and how to use small claims
If reminders fail and you have a debt of up to £10,000, the small claims track in England and Wales is a realistic and relatively straightforward option. You file online via GOV.UK's Money Claim Online (MCOL) service at moneyclaim.service.gov.uk. The filing fee ranges from £35 for claims up to £300 to £455 for claims up to £10,000, and is recoverable if you win.
Before filing, send a formal Letter Before Claim giving the customer 14 days to pay. Template letters are available from Citizens Advice and the Federation of Master Builders. Most debts settle at this stage — the act of sending a formal letter signals that you are serious and willing to follow through.
To win a small claim you need: a signed quote or contract, a copy of the invoice, evidence of delivery of work (photos, sign-off, messages confirming completion), and evidence of your reminder sequence. Trade2Base stores all of this automatically — quote sign-off, invoice timestamps, and the record of every reminder sent.
What NOT to do
The following actions can undermine your legal position, damage your reputation, or create new legal problems for you:
- Removing or threatening to remove completed work. Once work is completed and handed over, it belongs to the customer. Removing it — ripping out a bathroom, disconnecting a boiler — is criminal damage, even if you have not been paid.
- Posting about the customer on social media. Naming a non-paying customer publicly, even if what you say is true, creates significant defamation risk and almost never results in payment. It looks unprofessional and can cost you other customers who see it.
- Threatening criminal proceedings for a civil debt. Non-payment of an invoice is a civil matter. Threatening to have someone arrested for not paying is a misuse of criminal process language and can undermine your case.
- Accepting a partial payment without reserving your right to the balance. If a customer sends £200 of a £500 invoice, accept it but write back immediately confirming you accept it as a partial payment and that you continue to pursue the remaining £300.
Trade2Base automated reminder sequences
The biggest reason trade businesses do not chase invoices consistently is not that they do not want to — it is that they forget, or they feel awkward about it, or they are too busy on site to stop and send messages. Trade2Base automates the entire reminder sequence. You set the timing — day 3, day 7, day 14 after due date — and the messages go out automatically, with a payment link, without you having to think about it.
The result is that every overdue invoice gets chased consistently, at the right intervals, with a professional message — not a panicked message dashed off when you suddenly notice an invoice that has been sitting unpaid for six weeks. Customers receive a clear, professional communication. You spend no time on it. And your average debtor days drop significantly.
Trade2Base also flags which customers are chronically late-paying, so you can decide whether to require deposits from them on future jobs or — in extreme cases — decline to take them on again. That information, visible across your full job history, is something most trade businesses are making guesses about. Having the data changes how you take on work.