How to Chase Unpaid Invoices as an Electrician

Late payment is a chronic problem across the UK trades. According to the Federation of Small Businesses, UK small businesses are owed billions in late invoices at any given time, and the average small business spends hours every month chasing overdue payments rather than doing billable work.

For electricians, the risk is particularly acute. Domestic customers who seemed perfectly reasonable during a rewire or consumer unit upgrade can become evasive once the work is done. Commercial clients — managing agents, landlords, small building contractors — often have long payment cycles built into their processes and treat your 14-day invoice as if it said 60 days.

The good news: UK law gives you real tools to recover what you're owed. The Late Payment of Commercial Debts (Interest) Act 1998 lets you charge statutory interest on overdue business-to-business invoices. Small claims court lets you recover debts under £10,000 online without a solicitor. And a structured, professional chase sequence means most debts get paid before they ever reach that stage.

The key is having a system — and following it every time, without exception.

A consistent chase sequence does two things: it maximises the chance of payment without legal action, and it creates a paper trail that strengthens your position if you do need to escalate. Here is the sequence that works for most electricians:

Stage 1 — Friendly reminder (day 7 after due date)

Most late payments at this stage are genuine oversight — the customer simply forgot or the invoice landed in their junk folder. A brief, non-accusatory message is all that's needed. Don't apologise for chasing. Keep it warm but matter-of-fact.

Stage 2 — Firmer reminder (day 14 after due date)

Now you're following up on an invoice that's been overdue for two weeks. The tone shifts slightly — still professional, but clearer about the need for prompt payment. Reference the original invoice number and the due date explicitly.

Stage 3 — Formal notice (day 30 after due date)

At 30 days overdue, this moves into formal territory. Your letter or email should state the outstanding amount, reference the original invoice and due date, and notify the customer that you intend to add statutory interest if payment is not received within a defined window (typically 7 days).

Stage 4 — Final warning with statutory interest applied (day 45 after due date)

This is your last step before formal recovery action. The message should state the new total including statutory interest and compensation, give a final deadline (7 days), and clearly state what action you will take if payment is not received — whether that is small claims court, a debt collection agency, or a solicitor's letter.

Between stages, make phone calls. Written messages are easier to ignore than a direct conversation. When you do speak to the customer, stay calm and professional — the goal is payment, not confrontation.

The Late Payment of Commercial Debts (Interest) Act 1998 gives you the legal right to charge interest on overdue invoices for business-to-business transactions. This means it applies when your customer is a business — a landlord operating as a company, a property management firm, a building contractor, or any commercial client — rather than a private individual.

Under the Act, you can charge:

• Statutory interest: 8% above the Bank of England base rate, applied to the overdue amount from the date payment was due
• Compensation: a fixed sum added automatically to every late invoice — £40 for debts under £1,000, £70 for debts between £1,000 and £9,999, and £100 for debts of £10,000 or more
• Reasonable debt recovery costs: if your actual recovery costs (such as a solicitor's letter) exceed the fixed compensation, you can claim the difference

To calculate statutory interest: take the overdue amount, apply the current rate (check the Bank of England base rate and add 8%), and calculate it on a daily basis for however many days the invoice has been overdue.

You do not need to include a statutory interest clause in your original contract for this to apply — the Act implies the right automatically for qualifying business debts. However, you must notify the debtor that you are claiming interest before or when you make the claim.

For consumer (private individual) debts, the Act does not apply directly. However, you can still include a contractual late payment interest clause in your terms and conditions — and the Consumer Rights Act 2015 provides separate protections around unfair terms. Make sure any interest clause is clearly written and was drawn to the customer's attention before the work began.

If your chase sequence has failed and the debt is under £10,000, small claims court is your most powerful and cost-effective option. The process is entirely online and does not require a solicitor.

How it works

1. File your claim at gov.uk/make-court-claim-for-money. You'll need the debtor's name and address, the amount owed, and a brief description of why you're owed it
2. Pay the court fee (fees are scaled by claim amount — for example, a claim between £1,500 and £3,000 costs £115; between £3,000 and £5,000 costs £205; between £5,000 and £10,000 costs 5% of the claim value). These fees are recoverable from the debtor if you win
3. The defendant has 14 days to respond. If they don't respond, you can apply for a default judgment — a legally enforceable decision in your favour without a hearing
4. If they dispute the claim, a hearing will be arranged. Small claims hearings are informal, and judges are used to self-represented claimants. Bring your invoice, any written agreement, evidence of the work done (photos, sign-off documents), and your correspondence trail

Enforcement

A judgment in your favour is not automatic payment — you may need to enforce it. Options include instructing a High Court Enforcement Officer (for debts over £600), applying for an attachment of earnings order, or applying for a third-party debt order. These enforcement steps are straightforward to apply for online.

The existence of small claims court is also a powerful deterrent. Most debtors who receive a formal letter of claim — the mandatory pre-action step — pay promptly to avoid court proceedings.

When a debt is stuck, you have three escalation options beyond your own chasing. Each has different costs, speeds, and use cases.

Debt collection agency

Agencies take a percentage of what they recover — typically 10–25% depending on the debt size and age. They contact the debtor on your behalf, adding external pressure. The advantage is no upfront cost and no legal complexity. The disadvantage is that a significant portion of any recovery goes to the agency. Useful for older, smaller debts where court action isn't worth the time.

Solicitor's letter before action

A formal letter from a solicitor — often called a "letter before claim" — carries significantly more psychological weight than a letter from you. Many debtors pay immediately on receipt. Some solicitors offer fixed-fee debt recovery letters for £30–£75. This is often the most cost-effective step between your own chasing and a court claim.

Small claims court

As described above — most appropriate for debts where you're confident in your documentation and the debtor isn't disputing the amount, just not paying. For disputed amounts where both sides have arguments, be realistic about the time a contested hearing requires.

The right sequence for most electricians: chase yourself → solicitor's letter → small claims court. Use a debt collection agency only if the debt is too small to justify court time or if you want to outsource the legwork entirely.

Copy and adapt these for your own use. Replace the bracketed placeholders with your actual details.

Stage 1 — Day 7 friendly reminder

Subject: Invoice [INVOICE NUMBER] — Friendly Reminder

Hi [NAME], just a quick note to flag that invoice [INVOICE NUMBER] for [AMOUNT] was due on [DATE]. It may have slipped through — if you'd like to pay by bank transfer, my details are [SORT CODE / ACCOUNT NUMBER]. Give me a call if you have any questions. Thanks, [YOUR NAME].

Stage 2 — Day 14 firmer reminder

Subject: Invoice [INVOICE NUMBER] — Payment Now Overdue

Hi [NAME], I'm following up on invoice [INVOICE NUMBER] for [AMOUNT], which was due on [DATE] and remains unpaid. Please arrange payment as soon as possible. Bank transfer: [SORT CODE / ACCOUNT NUMBER], reference [INVOICE NUMBER]. If there's a problem with the invoice, please let me know immediately. [YOUR NAME].

Stage 3 — Day 30 formal notice

Subject: Invoice [INVOICE NUMBER] — Formal Notice of Overdue Payment

Dear [NAME], Invoice [INVOICE NUMBER] for [AMOUNT] issued on [ISSUE DATE] and due on [DUE DATE] remains unpaid. This is a formal notice that the invoice is now [X] days overdue. Please make payment within 7 days. If payment is not received, I will be adding statutory interest in accordance with the Late Payment of Commercial Debts (Interest) Act 1998 and may pursue recovery through the courts. [YOUR NAME].

Stage 4 — Day 45 final warning

Subject: Invoice [INVOICE NUMBER] — Final Notice Before Legal Action

Dear [NAME], I am writing for the final time regarding invoice [INVOICE NUMBER]. The original amount of [AMOUNT] remains unpaid [X] days after the due date of [DATE]. Statutory interest of [CALCULATED AMOUNT] has now been added, together with the fixed compensation of [£40/£70/£100] under the Late Payment of Commercial Debts (Interest) Act 1998. The total amount now due is [NEW TOTAL]. Payment must be received within 7 days of this notice. If payment is not received by [DATE], I will issue a claim through the County Court without further notice. [YOUR NAME].

The most effective late payment strategy is reducing the number of late invoices you have to chase. These tactics work:

• Take a deposit upfront: For any job over £500, ask for a 25–50% deposit before you start. This qualifies the customer, covers your materials, and signals that you run a professional operation. Customers who won't pay a deposit are often the ones who later dispute or delay the balance
• Set short payment terms: 7 days is entirely reasonable for domestic electrical work. 14 days for commercial clients. The longer the payment window, the easier it is for payment to slip down the customer's priority list
• Invoice the moment you finish: Send the invoice before you leave the site. Every hour of delay reduces your chances of same-day payment and normalises the idea that payment isn't urgent
• State payment terms clearly in your quote: "Payment due within 7 days of completion. Late payment interest applies in accordance with the Late Payment of Commercial Debts Act." This sets the expectation before the work starts
• Offer on-site payment: Card reader or bank transfer on the day of completion eliminates invoice chase entirely for domestic jobs. Make it easy for customers to pay immediately
• Know your customer: Landlords and agents can be slow payers, especially if they're waiting on tenant rent. Agree payment terms explicitly in advance and send invoices to the right person (the person who authorises payments, not just the person who arranged the job)