Electrician Invoicing and Quoting: VAT, Deposits and Getting Paid

A quote is a fixed price for a defined scope and binds you once the customer accepts it; an estimate can move. GOV.UK says every invoice needs a unique identification number, your name and address, the customer's, a description of the work, the supply date, the invoice date and the amount owed. VAT registration is compulsory once taxable turnover passes £90,000 in any rolling 12 months. A business customer who pays late owes statutory interest at 8 per cent over base rate, 11.75 per cent a year with Bank Rate held at 3.75 per cent on 17 September 2026, plus a fixed £40 to £100. And NICEIC is blunt: never withhold a certificate over an unpaid bill.

What is the difference between a quote and an estimate?

A quote is an offer to do specified work for a specified price. Once accepted, you have a contract at that price and you cannot add to it because the job took longer, unless the customer agreed a variation. An estimate is an indication of likely cost; the final bill can differ, within reason, as long as you said what it was based on.

Most electrical jobs hide an unknown, so quote with exclusions rather than retreating to an estimate. A board change quote should carry a line such as: "Price assumes all existing circuits test satisfactorily. Any remedial work found during testing will be priced and agreed in writing before it is done." That keeps the quote fixed and the extras honest. The same logic applies to EICRs, where the price should state the number of circuits and the agreed sampling; see how to price an EICR.

Three details that save arguments later:

• Validity. Put a date on it. Thirty days is common, because cable and switchgear prices move.
• Variations. Agree extras in writing before doing them. A text message saying "Yes, add the two sockets for £140" is a variation you can invoice.
• No price agreed at all. Under section 51 of the Consumer Rights Act 2015, where a consumer contract fixes no price the customer must pay a reasonable price and no more. You do not want a district judge deciding what reasonable is.

What must a quote to a homeowner include?

When you price a job at the kitchen table and the customer says yes there and then, you have made what the Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013 call an off-premises contract. The consumer gets 14 days to cancel, starting the day after the contract is made, and you must tell them so. Business Companion, the Trading Standards guidance site, sets out what the trader has to do.

The penalties for skipping the paperwork fall on you, not the customer:

• If you never give the cancellation information, the cancellation period stretches to as much as 12 months beyond the normal 14 days.
• If you start work inside the 14 days on your own initiative and the customer cancels, they do not have to pay for what you have done.
• If they asked in writing for an early start and then cancel part-way, they pay a proportionate amount for the work completed up to that point.
• Failing to give notice of the right to cancel an off-premises contract is a criminal offence, enforced by Trading Standards.

In practice: send every domestic quote in writing with a short cancellation notice and the model cancellation form attached, and add a tick-box or reply line reading "I want the work to start before the 14-day cancellation period ends and understand I must pay for work done if I then cancel." It takes one extra page and it closes the biggest gap in most tradespeople's paperwork.

What must an electrician's invoice show?

GOV.UK's guidance on invoicing lists what every invoice must include, VAT registered or not:

• a unique identification number
• your business name, address and contact information
• the name and address of the customer
• a clear description of what you are charging for
• the date the work was done (the supply date)
• the date of the invoice
• the amount charged, the VAT amount if applicable, and the total owed

Sole traders must also show their own name alongside any business name, and an address where legal documents can be delivered. A limited company must use its full name as it appears on the certificate of incorporation, and if you choose to name any directors you must name them all.

For electrical work, add four things the law does not demand but your customers and your records do:

1. The installation address, if different from the billing address.
2. A description that ties to the paperwork: "EICR, 12 circuits, three-bedroom house at [address], report reference [number], inspected [date]".
3. The customer's purchase order or works order number. Agents and facilities managers reject invoices without one.
4. The due date and how to pay: bank details, or a card payment link.

Numbering matters more than it looks. Use one unbroken sequence; a gap or a duplicate is the first thing HMRC queries. If you raise an invoice in error, cancel it with a credit note rather than deleting it.

What does a full VAT invoice add?

If you and your customer are both VAT registered you must issue a full VAT invoice. HMRC's VAT Trader Records manual (VATREC5010) lists the details:

For retail-style sales of £250 or less including VAT, a simplified invoice is allowed. If you are not VAT registered, your invoice must not show or imply VAT in any form.

When is the tax point, and why do deposits matter?

The basic tax point for a service is the day the work is completed. Two things move it. If you issue the VAT invoice within 14 days of completion, the invoice date becomes the tax point. And if you are paid before completion, the payment creates a tax point for the amount received. So a £600 deposit on a board change, taken by a VAT-registered electrician, contains £100 of VAT that belongs in the VAT return for the period you received it, not the period you finish the job. Issue a VAT invoice or receipt for the deposit, then invoice the balance.

What rate of VAT applies to electrical work?

Most of what an electrician does is standard-rated, but four exceptions come up often enough to get wrong.

Batteries were added to the zero rate from 1 February 2024, whether they store solar, grid or both. EV chargers are not on the list of energy-saving materials in Notice 708/6, so a domestic charger install is 20 per cent. The certification side of those jobs is covered in the guides to solar PV certificates under Section 712 and EV charger certificates under Section 722.

When do you have to register for VAT?

You must register when your VAT-taxable turnover for the previous 12 months goes over £90,000. It is a rolling test, checked at the end of every month, not a tax-year figure. You then have 30 days to notify HMRC, and registration starts on the first day of the second month after you went over. An electrician whose rolling 12 months reaches £92,000 at the end of May must notify by 30 June and charges VAT from 1 July.

There is a second, forward-looking test: if you expect to take more than £90,000 in the next 30 days alone, for example on signing one large contract, you must register straight away. The deregistration threshold is £88,000.

Turnover means sales, not profit, and it includes materials you buy and pass on. A sole trader fitting a lot of consumer units and EV chargers hits the threshold much sooner than one selling mostly labour. If most of your customers are homeowners, registration makes you 20 per cent dearer overnight on labour; if most are VAT-registered businesses, it costs them nothing and lets you reclaim VAT on stock, tools and the van.

How do CIS and the reverse charge change the invoice?

If you subcontract to a construction contractor, the Construction Industry Scheme applies. The contractor deducts tax from the labour element of your invoice, 20 per cent if you are registered for CIS, 30 per cent if you are not and nothing if you hold gross payment status, so the invoice must split labour from materials. If you are both VAT registered and the contractor is not the end user, the domestic reverse charge applies as well: you charge no VAT and the invoice says so. The worked examples are in CIS and reverse-charge VAT on electrician invoices.

What payment terms should an electrician use?

Two statutes set the outer limits for business customers.

The Late Payment of Commercial Debts (Interest) Act 1998. Where no payment date is agreed, a payment is late 30 days after the customer gets the invoice or you finish the work, whichever is later. An agreed period should not be longer than 60 days between businesses unless the longer term is fair to both, and 30 days where the customer is a public authority.

The Housing Grants, Construction and Regeneration Act 1996, usually called the Construction Act. Electrical installation work for a contractor, developer, landlord business or commercial client is a construction contract. That gives you several rights whatever the subcontract says:

• A pay-when-paid clause is ineffective under section 113, except where the party further up the chain is insolvent. "We pay you when the client pays us" is not a term a main contractor can rely on.
• If the job runs to 45 days or more, section 109 entitles you to stage payments.
• Where the contract is silent on timing, the Scheme for Construction Contracts fills the gap: the final date for payment is 17 days after the due date.
• If a notified sum is not paid by the final date, section 112 lets you suspend work after giving at least seven days' written notice.

The Construction Act does not apply to a contract with a residential occupier, so none of this helps with a homeowner.

Who is your customer when a letting agent instructs you?

Find out before you start. An agent normally acts for a named landlord, which means your contract, and any claim for non-payment, is against the landlord, not the agency. Ask the agent to confirm on the works order whether they are contracting in their own name or as agent for the landlord, and get the landlord's name and address either way. Then address the invoice accordingly: to the agency if it contracted as principal, or to the landlord "care of" the agency if not. An invoice that matches the agent's works order number, property address and inspection date gets paid from the client account in the next run; one that does not sits in a queue.

Should you take a deposit?

For any job with significant materials, yes: a consumer unit and a board's worth of RCBOs, an EV charger, a rewire's cable. A deposit that covers the materials is normal and reasonable. For a rewire or a refurbishment, go further and agree stage payments: deposit, first fix complete, second fix complete, balance on certification. For EICRs and small jobs, payment on completion is standard and deposits are unusual.

Handle it properly:

• State the deposit and the stages on the quote.
• Invoice the deposit separately and give a receipt.
• Remember the VAT tax point if you are registered.
• A consumer who cancels inside the 14-day period is entitled to their money back, less a proportionate charge for any work they asked in writing for you to start.
• Say in your terms what happens to the deposit if the customer cancels after that, and limit it to your real costs, such as special-order materials.

Make paying easy at the moment the customer is happiest, which is when the lights come back on. Take card payments or send a payment link before you leave. You cannot add a surcharge for a consumer paying by debit or credit card; the Consumer Rights (Payment Surcharges) Regulations 2012 have banned that since 13 January 2018, so build the card fee into your prices.

Can you hold the certificate until you are paid?

Plenty of electricians put "certificates issued on receipt of payment" in their terms. For certificates covering new work, the schemes do not support it. NICEIC's guidance on certification, published in September 2024, says: "You should never withhold a certificate for any contractual reason, including non-payment of invoices", where the installation has been energised and is available to use.

The reasoning is hard to argue with. BS 7671 Part 6 requires an Electrical Installation Certificate or Minor Works certificate to be given to the person who ordered the work, and the certificate is the record that an energised installation was inspected and tested before being put into service. For notifiable domestic work in England and Wales there is a legal clock as well: the Building Regulations compliance certificate must reach the occupier, and the notification the local authority, within 30 days of completion, payment or no payment. See Part P notification for how that runs through your scheme.

Condition reports are a slightly different case, because an EICR is a report on someone else's installation rather than a certificate for your own work, and many inspectors make payment before issue a term of the quote. If you do that, two rules apply. First, anything immediately dangerous has to be made safe or reported to the person responsible, in writing, on the day. IET Guidance Note 3 expects the person ordering the report to be told about an immediately dangerous condition without delay, so a C1 cannot wait for the finished report, and it certainly cannot wait for a bank transfer. Second, check your own scheme's rules before relying on the term. A landlord needs the report quickly in any case: under the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020 a copy must go to the existing tenant within 28 days of the inspection, and the maximum civil penalty for a breach is now £40,000. That deadline is a reason for them to pay promptly; it is not a licence for you to sit on a report that records danger. The electrician-facing detail is in landlord EICR regulations in England.

The stronger position is not to need the leverage at all: deposit before materials are ordered, stage payments on longer jobs, and payment on completion while you are still on site. The certificate then follows the same day, which is what a competent contractor's customer expects. The EIC section-by-section guide covers who signs and who receives it.

What can you do about late payment?

Business customers

The 1998 Act applies where both sides are acting in the course of a business: main contractors, facilities managers, letting agencies, commercial clients and landlords who let as a business. Once the agreed or default period has passed you are entitled, without it being in your terms, to:

• Statutory interest at 8 per cent over the Bank of England base rate. The reference rate is fixed twice a year: the base rate on 30 June applies to debts that fall late between 1 July and 31 December, and the rate on 31 December applies from 1 January to 30 June. Bank Rate was 3.75 per cent on 30 June 2026, so the statutory rate for the second half of 2026 is 11.75 per cent a year.
• A fixed sum for recovery costs, once per late payment: £40 for a debt up to £999.99, £70 for £1,000 to £9,999.99, and £100 for £10,000 or more.

A worked example. A £1,850 invoice for remedial work to a commercial unit is paid 45 days late. Interest is £1,850 × 11.75 per cent × 45 ÷ 365 = £26.80. Add the £70 fixed sum and the customer owes £1,946.80. On a £1,000 debt the interest runs at about 32p a day.

You do not have to claim it, and most electricians waive it for a good customer who is a week late. But a line on the invoice saying that interest and compensation will be claimed under the Act tends to move the invoice up the pile.

Homeowners

The Act does not cover consumers, and a one-property accidental landlord may well be treated as one. Interest on a homeowner's late invoice has to be in the terms they agreed and has to be fair under the Consumer Rights Act 2015. If it ends in a court claim, GOV.UK's guidance is that you can ask for interest at 8 per cent a year on the debt.

The chasing sequence

1. Day after the due date: polite reminder with the invoice attached.
2. 7 days overdue: statement and a request for a payment date. Speak to a person if you can; most late invoices are lost, not disputed.
3. 14 days overdue: formal reminder. For a business, state that statutory interest and the fixed sum now apply.
4. 21 to 30 days overdue: letter before claim.
5. After the response period: issue the claim through GOV.UK's "Make a court claim for money" service.

Step 4 is where electricians most often go wrong. If the debtor is an individual, which includes a homeowner, a private landlord and a sole-trader builder, the Pre-Action Protocol for Debt Claims applies. Your letter of claim must set out the amount and how the debt arose, enclose an up-to-date statement of account along with the protocol's Information Sheet, Reply Form and Financial Statement form, and give 30 days to respond before you issue. If they ask for documents, you have 30 days to supply them. If the debtor is a limited company, the protocol does not apply and 14 days is normal for an undisputed invoice. Skipping the protocol does not kill your claim, but the court can penalise you on costs.

What does a court claim cost?

Court fees for a money claim in England and Wales, from GOV.UK as checked on 8 October 2026:

The fee is added to the claim if you win. Claims up to £10,000 normally go on the small claims track, which is built for people without a solicitor and where legal costs are largely not recoverable. Scotland has its own Simple Procedure for claims up to £5,000. A judgment is only worth having against someone who can pay, so check that a company is still trading before you spend the fee.

Keep every step in writing and dated. The quote, the customer's acceptance, the variation texts, the certificate and the invoice together are what win a small claim.

What is changing for invoicing from 2026?

Qualifying income for Making Tax Digital is your gross income from self-employment and property before expenses, so it is a turnover test, not a profit test. An electrician who buys materials and passes them on can be over £50,000 on that basis with a much smaller profit, and may already be in. None of the late payment reforms is in force yet; the government has said it will legislate when parliamentary time allows, and the implementation roadmap for e-invoicing is due at Budget 2026. The practical point is that handwritten invoice books and spreadsheets are being legislated out, a year at a time.

How should quotes, invoices and certificates be linked?

Every certificate should trace to an invoice and every invoice to a certificate. Your scheme assessor samples certificates and can ask for the job records behind them; HMRC can ask to see the work behind an invoice; and a client's query two years later should take a search, not a morning in the loft. Use one job reference on the quote, the certificate and the invoice, and put the certificate number on the invoice line.

Retention periods are different for the two sets of paperwork:

• VAT records: six years.
• Sole trader business records: at least five years after the 31 January filing deadline for the tax year.
• Limited company records: six years from the end of the financial year.
• Contract claims: the Limitation Act 1980 gives six years in England and Wales; Scotland uses a five-year prescription period.
• Certificates: longer. The reasons, including the 15-year long-stop, are in electrical certificate retention and GDPR.

If your certificates and invoices live in different systems, at least keep the job reference common to both. What to expect from software that joins them up is covered in what to look for in electrical certification software, and the wider question of paper against digital records in digital vs paper electrical certificates.

What does this look like on a real job?

A consumer unit replacement for a homeowner, priced at £780, not VAT registered.

1. Survey and quote. Written quote with scope, the exclusion for remedials found during testing, 30-day validity, a £300 materials deposit, balance on completion, and the cancellation notice and model cancellation form attached.
2. Acceptance. The customer replies by email accepting the quote and asking for the work to start next week, inside the 14 days. That email is your express request.
3. Deposit. Invoice 0147 for £300, paid by bank transfer, receipt sent. Order the board.
4. The job. Insulation resistance on one circuit is low. You stop, price the repair at £95, and the customer agrees by text before you carry on. See what to check on a consumer unit replacement.
5. Completion. Invoice 0148 for the £480 balance plus the £95 variation, total £575, with the EIC number on the line. The customer pays by card link before you leave.
6. Certificate and notification. EIC issued the same day, and the job notified through your scheme well inside the 30 days.

Six documents, all cross-referenced, and nothing left to chase.

How Certio helps

Certio produces the EICR, EIC, Minor Works certificate and PAT records on the BS 7671 model forms and turns them into branded PDFs. Photograph the consumer unit and the circuit schedule drafts itself; point the phone camera at a Megger MFT-X1 and the reading goes straight into the schedule of test results, or dictate it while your hands stay on the probes. Suggested observation wording with the regulation reference is there for you to check and confirm. The judgement stays yours; the typing goes. Starter is free for 7 days, then £4.99 a month.

Written by the Certio team. Last checked 8 October 2026.