If you run an electrical business, your invoices do more than ask for payment: they show clients exactly what work was done, what materials were fitted, and why the job cost what it did. This guide gives you a ready-to-use electrician invoice template with trade-specific line items, plus a worked example so your bills look professional and get paid on time. A downloadable electrician invoice template with the same callout, labour and materials fields is also available.
What should an electrician’s invoice include?
An electrician’s invoice should include a unique invoice number, your business name, address and contact details, the customer’s name and address, the invoice date, the date the work was carried out, a clear description of labour and materials, the total charged, and your payment terms. If VAT-registered, add your VAT number and the VAT charged per line in HMRC’s format.
Those basics are a legal floor, not the whole job. A proper electrician invoice also carries the trade-specific details that stop disputes: hours on site versus a day rate, the callout fee, each material fitted, the certificate issued, and any testing performed. Vague invoices invite slow payment because the client cannot tell what they are paying for. Specific ones get approved fast.
Trade-specific line items electricians should list
Generic line items like “electrical work” tell the customer nothing. Use line items that mirror how the job was actually done:
| Line item | What to show | Example |
|---|---|---|
| Labour | Hours worked or day rate, plus the date of work | Labour: 5.5 hrs at £45/hr |
| Callout fee | Fixed charge for attending, if you use one | Emergency callout (evening) |
| Materials | Each part with quantity and unit price | Consumer unit 10-way: 1 × £135 |
| Testing and certification | Type of test, certificate issued | EICR: 3-bed house, cert no. 4821 |
| Minor works | Small jobs billed per point or per job | Socket replacement: 4 × £25 |
| Travel or mileage | Flat travel charge or per-mile rate | Travel within 20 miles |
Materials deserve their own lines with quantities and unit prices, not a single lump sum. Clients question a £250 “parts” line; they accept “100 m of 2.5 mm twin and earth cable: 1 × £68” because they can see the money. That detail also protects you if the customer later claims a part was never fitted.
Tip: reference the certificate number on the invoice when you issue one, for example “Electrical Installation Certificate EIC-2026-114 attached”. It links the paperwork together and stops the client phoning you three months later asking for “that certificate from the fuse box job”.
How to write an electrician invoice, step by step
Build the invoice in this order and you will never miss a field:
1. Number it. Every invoice needs a unique, sequential number (INV-0142, INV-0143, and so on). Never skip numbers or reuse them; sequential numbering is an HMRC requirement and it keeps your records auditable.
2. Add your details and the customer’s. Your trading name, address and phone number at the top; the customer’s name and address below. If you trade as a limited company, use the full registered name.
3. Date everything. Show the invoice date and the date the work was done (the supply date). These can be the same, but include both.
4. Describe the job. Start with one line naming the job, for example “Consumer unit replacement, 12 Acacia Avenue”. Then break it into labour, materials, testing and callout lines.
5. Show VAT if applicable. If you are VAT-registered, add your VAT number, the VAT rate per line, and net, VAT and gross totals. VAT-registered businesses must issue invoices in HMRC’s VAT format, with the details set out in HMRC’s compliance guidance (see HMRC’s internal manual on VAT invoice contents).
6. Set payment terms and a due date. State the terms (“Payment due within 14 days of invoice date”), the exact due date, and how to pay (bank transfer details or payment link). LancerBill’s invoice generator builds all of this into a clean template automatically.
Invoice rules last reviewed: October 2026.
How do labour, materials and VAT change the invoice total?
Labour and materials each get their own lines with quantities and unit prices, giving a net subtotal; if you are VAT-registered, you then add VAT at 20 percent of that subtotal to reach the gross total. Itemising both lets the customer verify the arithmetic, which is why detailed invoices get paid faster than single-line bills.
Here is a realistic invoice for a consumer unit replacement, built line by line:
| Description | Qty | Unit price | Net |
|---|---|---|---|
| Labour: consumer unit replacement (5.5 hrs) | 1 | £247.50 | £247.50 |
| 10-way consumer unit with SPD | 1 | £135.00 | £135.00 |
| RCBOs and breakers | 8 | £9.00 | £72.00 |
| Cable, clips and sundries | 1 | £41.20 | £41.20 |
| EICR following installation (cert attached) | 1 | £180.00 | £180.00 |
The arithmetic runs like this. Net subtotal: £247.50 + £135.00 + £72.00 + £41.20 + £180.00 = £675.70. If you are VAT-registered at the standard rate of 20 percent: VAT = £675.70 × 0.20 = £135.14. Gross total = £675.70 + £135.14 = £810.84.
Showing each line and the workings means the client can check the maths themselves. When a customer can verify the total, they rarely argue with it. If you are not VAT-registered, skip the VAT lines entirely and show one total of £675.70; never add a VAT line if you are not registered.
Should electricians charge VAT on their invoices?
You only charge VAT if your business is VAT-registered. In the UK, registration becomes compulsory once your VAT-taxable turnover passes the registration threshold (£90,000 in a rolling 12-month period), and many businesses register voluntarily below it. If you are not registered, you must not add VAT to invoices, and you cannot reclaim VAT on the materials you buy.
VAT hits electricians harder than most trades because materials are a big share of the bill. A non-registered sparkie absorbs the 20 percent VAT on every consumer unit, breaker and metre of cable as a cost. Registering lets you reclaim that input VAT, but it adds 20 percent to your prices for domestic customers who cannot reclaim it, which can price you out of competitive quotes.
The rule of thumb: if you mainly serve commercial clients who are themselves VAT-registered, registering usually helps. If you mainly serve homeowners, run the numbers on a typical job first with LancerBill’s VAT calculator before deciding.
Payment terms that get electricians paid faster
Electricians lose more time chasing payment than most trades because the work is often done on trust in a customer’s home. Three habits fix most of it:
Quote first, then invoice against the quote. Send a written quote before the job, then mirror its line items on the invoice. When the invoice matches what the customer agreed to, disputes fall to near zero. LancerBill’s quote generator produces quotes you can convert into matching invoices in one flow.
Take a deposit on bigger jobs. A 30 percent deposit on jobs above £500 covers your material outlay and commits the customer. On a £1,200 rewire, that is £360 up front and £840 on completion, so you are never out of pocket for parts. Our guide on how much deposit to ask for upfront walks through the maths.
State a due date, not just “net 30”. Write “Payment due by 22 October 2026” rather than just terms in words; a concrete date gets paid faster. If a business customer pays late, you can add statutory interest and compensation under UK late-payment rules, which our late payment fee guide and late payment fee calculator cover in detail.
Watch out: never ask a domestic customer to pay the full balance before the job is finished unless you are supplying expensive bespoke equipment. Upfront-full demands read as a red flag to homeowners and kill trust; stage payments tied to milestones work better.
Common invoice mistakes electricians make
Mixing labour and materials in one line. “Rewire: £1,800” looks like a guess. Split it into labour (£1,200), materials (£520) and certification (£80) and it looks like professional pricing.
Forgetting the certificate on the invoice. Landlords need EICRs at least every five years under the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020, and letting agents routinely ask for the certificate before releasing payment. Reference the certificate number on the invoice so the paperwork trail is complete.
No payment terms at all. An invoice with no due date is a request the customer can file for later. Always include a due date and accepted payment methods; our invoice payment terms guide shows which terms suit trades businesses.
Invoicing weeks after the job. The faster you invoice, the faster you get paid. Send the invoice the same day the job finishes while the value of the work is fresh in the customer’s mind. A free tool like our invoice generator lets you build and send it from your phone before you leave the site.
Key takeaways
- Every invoice needs a unique number, your details, the customer’s details, invoice and supply dates, line-item descriptions, and a total.
- List trade-specific lines: labour with hours, callout fee, materials with quantities and unit prices, testing and the certificate number.
- Show your arithmetic: net subtotal, then VAT (only if registered), then the gross total.
- Only add VAT if you are VAT-registered; UK registration becomes compulsory once taxable turnover passes the threshold.
- Take a deposit on bigger jobs, state an exact due date, and invoice the same day the job finishes.
- Use a dedicated electrician invoice generator so every bill is consistent, numbered and professional.
Working on construction jobs rather than electrical work? Our construction invoice template adds CIS deduction lines, retention and reverse charge VAT wording.
Frequently asked questions
Plumbers can use the same approach with our plumber invoice template and generator, which covers callout fees, materials and emergency work.
Carpenters can use the same approach with our carpenter invoice template and generator, which covers custom builds, materials markup and staged payments.
Can I write an invoice as a sole trader without a limited company?
Yes. Sole traders can invoice freely; there is no legal requirement to be a limited company. Use your own name plus your trading name, your business address and contact details. Our step-by-step guide on how to write an invoice without a company covers the full process.
What hourly rate should an electrician charge in the UK?
Rates vary widely by region and specialism, typically ranging from around £35 to £65 per hour, with emergency callouts charged higher. Work backwards from your annual target income, overheads and billable hours rather than copying a competitor; our freelance rate calculator runs that calculation for you.
Should I charge a callout fee?
A callout fee makes sense for diagnostic visits and small repairs where travel and fault-finding take up most of your time. Tell the customer the fee and what it covers before you attend, and consider deducting it from the bill if they proceed with the full repair, which builds goodwill.
Do I need to include my certificate details on the invoice?
It is not a legal requirement, but referencing the certificate (EIC, Minor Works Certificate or EICR) and its number on the invoice creates a clean paper trail. It is particularly useful for landlord work, where agents and tenants may need to match the invoice to the safety certificate.
How long should I keep copies of invoices?
Keep invoice records for at least six years from the end of the accounting period they relate to. HMRC can ask to see them during a compliance check, and VAT-registered businesses must keep VAT invoice copies as part of their business records.
What if a customer disputes an invoice?
Detailed line items are your best defence: photos of the work, the signed quote, and an invoice that matches the quote usually settle disputes quickly. If a business customer simply will not pay, you can charge statutory interest and compensation; see our guide to charging late payment fees.