Chasing Overdue Invoices as a UK Trade Business — How to Get Paid Without Damaging Customer Relationships in 2026

Late payment is one of the most persistent pressures on UK trade businesses. According to industry figures, the average small and medium-sized business in the UK has around £23,000 in outstanding invoices at any given time. In construction and the trades, the problem is particularly acute: long job cycles, multiple subcontractors, and customers who routinely use supplier credit as an interest-free loan all stack up against the tradesperson trying to keep their cash flow healthy.

The good news is that there is a clear, legally grounded sequence for recovering what you are owed — and it is entirely possible to work through that sequence without turning a one-off payment dispute into a permanently damaged customer relationship. The key is being professional, being consistent, and knowing your rights.

Set clear payment terms before the job starts

Most invoice disputes begin before the first screw is turned. If your customer is not clear on when payment is due, what happens if they are late, or what the total will be, you are already behind.

State your payment terms explicitly on every quote and every invoice. The standard options in the trades are 7, 14, or 30 days from invoice date. Shorter terms are better for your cash flow; the right term depends on your customer type and job size. Whatever you choose, write it down. A verbal agreement that “payment is due when the job is done” is not enforceable in the same way as a written term.

Include your payment terms in the body of your quote, not buried in a footer. Something as simple as “Payment due within 14 days of invoice” is clear enough. When a customer signs off on the quote, they are agreeing to those terms.

Use staged payments and deposits to protect yourself on larger jobs

For any job over a few hundred pounds — and certainly for anything running into thousands — staged payments are one of the most effective tools available to you. The standard structure for trade businesses is a deposit of 30 to 50 percent before work begins, a mid-job payment at a defined milestone (first fix complete, for example), and the balance on completion.

A deposit serves two purposes. It covers your initial materials outlay so you are not funding the job from your own pocket from day one. And it is a signal of commitment: customers who have already paid a meaningful deposit are substantially less likely to dispute or delay the final payment. Customers who flatly refuse to pay any deposit on a large job are sometimes a warning sign worth heeding before you commit your time.

For ongoing maintenance or service contract work, consider monthly or quarterly billing rather than invoicing per visit. This reduces your administrative burden and gives customers a predictable payment schedule, which often means faster settlement.

What a valid UK invoice must contain

A common reason customers claim they cannot pay — or give themselves grounds to delay — is a poorly constructed invoice. In the UK, a valid business invoice must include:

• Your name or business name and address
• A unique invoice number
• The invoice date
• A clear description of the work carried out
• The amount charged, broken down if there are multiple lines of work
• Your VAT number and the VAT amount, if you are VAT-registered
• Your payment details (sort code and account number, or a payment link)
• The payment due date

If you are VAT-registered, your invoice must also show the VAT rate applied to each line. Missing any of these elements gives a difficult customer grounds to query the invoice and buy themselves more time. Get the structure right from the start and remove the excuse.

The Late Payment of Commercial Debts Act 1998 and your legal rights

For business-to-business (B2B) transactions — where both you and your customer are operating as businesses — the Late Payment of Commercial Debts (Interest) Act 1998 gives you automatic legal rights to charge interest on overdue invoices. You do not need to specify this in your contract for it to apply; it is a statutory right.

The statutory interest rate is 8 percent above the Bank of England base rate, applied from the day after the invoice due date. On top of that, you are entitled to claim a fixed compensation fee: £40 for debts under £1,000, £70 for debts between £1,000 and £10,000, and £100 for debts above £10,000.

These rights only apply to B2B debts. If your customer is a private individual — a homeowner having their bathroom refitted, for example — the Act does not apply automatically. To charge interest on domestic invoices, you need to have stated that in your terms and conditions upfront. This is a good reason to include a late payment clause in your standard customer agreement, even for domestic work.

Mentioning the Late Payment Act in your letter before action often prompts faster settlement, because it makes clear that the longer a business customer delays, the more they will end up paying.

The escalation sequence: from polite reminder to legal action

A consistent, graduated escalation approach achieves the best outcomes. Moving too quickly to aggressive language or legal threats can harden a customer's position; moving too slowly lets the debt age and makes recovery harder. The following sequence works well for most trade businesses.

Step 1: Invoice on the day the job is completed

Send the invoice the same day the job is finished — ideally while you are still on site. Every day between job completion and invoice sent is a day added to your wait. If you use job management software, this can be done in minutes from your phone.

Step 2: Day 1 past due — polite reminder

On the first day after the due date, send a brief, warm message. Text or WhatsApp is fine at this stage and is almost always read. The tone should be helpful, not accusatory:

The majority of late payments at this stage are simply forgotten invoices. A short, friendly nudge is all it takes.

Step 3: Day 7 past due — firmer follow-up

If there has been no payment or response, send a more direct follow-up by email. Reference the invoice number, the amount, and the original due date. Keep the tone professional:

Step 4: Day 14 past due — phone call and 48-hour deadline

Call the customer directly. Email and text can be ignored; a phone call is harder to avoid and often resolves things that written messages cannot. Stay calm and ask directly: “I wanted to check when you're planning to process invoice [number] — can you confirm a date?”

If you cannot reach them, leave a clear voicemail and follow up in writing, giving a 48-hour deadline. Note the date and time of your call in case you need it later.

Step 5: Day 21 past due — letter before action

A Letter Before Action (LBA) is the formal step that precedes legal proceedings. Send it by email and by post (recorded delivery). The letter should state the amount owed, the original due date, that you intend to issue a County Court claim if payment is not received within 7 days, and that you reserve the right to add statutory interest under the Late Payment of Commercial Debts Act where applicable.

Keep the language formal but factual. An LBA resolves a significant proportion of disputes without any further action, because it makes unambiguously clear that you are serious.

Step 6: Small claims court (up to £10,000)

If the LBA produces no result, you can file a County Court claim online via Money Claim Online (MCOL) at gov.uk. The small claims track covers debts up to £10,000 in England and Wales. Court fees are 5 percent of the claim value, with a minimum of £35 and a maximum of £455 — so a £3,000 debt costs £150 to file. These fees can be added to your claim, meaning the defendant pays them if you win.

The defendant has 14 days to respond. If they do not, you can apply for a default judgment. If they contest, a hearing will be scheduled — typically a few months away. A County Court Judgment (CCJ) on a customer's record affects their ability to obtain credit and business finance, which is a powerful incentive to settle before it gets that far.

Step 7: Debt collection agency

As a last resort, you can pass the debt to a collection agency. They typically take 25 to 40 percent of the amount recovered in return for taking on the chase themselves. This is worth considering when the legal route looks expensive relative to the debt size, or when the debt is disputed and you want to avoid a court appearance. You receive less, but you receive it without further time investment.

Keeping the relationship intact while you chase

One of the main reasons tradespeople delay chasing invoices is the fear of damaging a good customer relationship. That concern is understandable, but a well-run chase should not damage the relationship at all — and frankly, a customer who is deliberately avoiding payment has already put the relationship at risk on their side.

The approach that works is to separate the payment issue from the relationship. Use “I” statements rather than accusations: “I have not yet received payment” rather than “you have not paid.” Keep every communication professional and documented. Never threaten negative reviews or social media exposure in exchange for payment — that can constitute blackmail regardless of whether the review would be truthful.

Most customers, even those who are slow to pay, respect a business that handles the process professionally. The ones who respond aggressively to a polite, professional payment chase are usually the ones who were going to be difficult regardless.

Handling common excuses

A few excuses come up repeatedly. Knowing how to respond to each one keeps the conversation on track.

“The cheque is in the post.” Acknowledge it warmly and give a specific date: “Great — if it hasn't cleared by [date three days from now], I'll give you a call. My bank details are also available if BACS is easier.” If the cheque never arrives, you have a clear record of their claim.

“We are waiting for our client to pay us.” A common excuse from commercial customers. Your legal right to payment does not depend on their client's payment cycle. Respond with: “I understand cash flow can be tight at times. Unfortunately I'm not able to extend credit beyond [X] days — could we agree a part payment now and the balance by [date]?” Offering a structured payment plan shows flexibility while keeping the debt moving.

“I am disputing the invoice.” Ask them to put the specific dispute in writing immediately. A genuine dispute should come with specific details. If none are forthcoming, or if the dispute only surfaces after multiple reminders, treat it as a delay tactic and continue your escalation sequence. Where there is a legitimate dispute over part of an invoice, agree payment of the undisputed amount immediately while resolving the rest.

Credit checks before taking on commercial clients

For significant commercial jobs, a basic credit check before you start can save considerable pain later. Companies House is free and lets you review a limited company's accounts, check for County Court Judgments (CCJs) already registered against them, and see whether they have a history of late filing — which can indicate financial difficulty.

Paid credit reference agency checks (Creditsafe, Experian Business, Dun & Bradstreet) give you a more detailed picture including a credit score, payment history, and any adverse information. For a job worth several thousand pounds, the modest cost of a credit check is usually justified.

If a prospective commercial client has existing CCJs or a poor payment history, price the risk accordingly — larger deposit, shorter payment terms, or a decision to decline the work entirely.

Invoice finance: a cash flow option worth knowing about

If late payment is creating a persistent cash flow problem rather than an occasional one, invoice finance (also called invoice factoring or invoice discounting) is a mechanism worth understanding. A finance company advances you a percentage — typically 70 to 90 percent — of your outstanding invoice value immediately, then collects the full amount from your customer when the invoice is due. You receive the balance, minus a fee, once the invoice is paid.

The cost varies by provider and your customer risk profile, but for businesses carrying significant outstanding invoice balances, the ability to access cash immediately rather than waiting 30 to 60 days can be the difference between taking on the next job and stalling for lack of working capital. It is particularly relevant for businesses doing regular commercial or public sector work where 30-day payment terms are the norm.

Invoice finance is not a solution to bad debts — most providers will not advance funds against invoices they consider high-risk — but it is a legitimate working capital tool that many trade businesses underuse.

Track every invoice so nothing slips through

The single biggest reason overdue invoices go undetected for weeks is that many trade businesses have no systematic way to see what is outstanding. If your invoicing is done via a spreadsheet or a pile of receipts, it is easy for a £1,500 invoice to sit 30 days overdue without triggering any action.

Trade2Base tracks the status of every job and invoice in real time. You can see at a glance which invoices are paid, which are due this week, and which are overdue — without having to cross-reference anything manually. Automated reminders go out on your behalf before and after the due date, so the first stage of the escalation sequence happens without you having to think about it.