Should testing be a separate charge?

Yes. Certification carries its own liability and its own time, and clients who need an EICR for a mortgage or a letting licence expect to see it named. Folding it into labor means you are giving it away.

How do I invoice for a rewire?

Stage it. A deposit for materials, one or more interim payments against agreed milestones, and a final balance on certification. Never carry the whole materials cost on a domestic rewire yourself.

What about commercial clients?

Expect Net 30 and a purchase order number. Put the PO number on the invoice — many accounts systems will reject an invoice without one, and the rejection is often silent.

Do I need to show VAT or sales tax separately?

If you are registered, yes — your client needs the tax shown as its own line to reclaim it. Enter your rate and it is calculated on the discounted subtotal.

How long should I keep certificates and invoices?

Longer than your tax records require. Electrical certificates are asked for at sale, remortgage and insurance claims, sometimes a decade later, and the invoice is what ties the certificate to the work and the payment. Six years is a common statutory minimum for records; keeping electrical paperwork indefinitely costs nothing and has saved a lot of disputes.

Invoice Builder › Electrician

Electrician invoice template

Room for the things electrical work is actually billed for: labor, materials, and the testing and certification that has to be charged separately because it is a separate obligation.

+ Add your logo

INVOICE

Invoice # Date Due PO / Ref

From

Bill to

Description	Qty / Hrs	Rate	Amount

Subtotal$0.00

Discount % $0.00

Tax % $0.00

Shipping

Total$0.00

Amount paid

Balance due$0.00

Notes

Terms & payment details

How to bill for electrician work

Charge certification as its own line

It is a distinct piece of work with a distinct liability. Bundling it into labor makes it invisible, and invisible things feel free.

Reference the certificate number

Put it in the notes. It ties the invoice to the paperwork years later when a house is being sold and someone needs both.

Quote materials at the price you paid plus a stated margin

Commercial clients frequently ask. Having an answer ready is better than improvising one.

What belongs on an electrician's invoice

The installation address and the circuit or board worked on
Labor hours separated from materials
Testing and certification as a distinct charge with the certificate number
Each material item with quantity — cable runs, accessories, protective devices
Your registration or competent-person scheme number
The date of the next recommended inspection, if you issued a certificate
Purchase order number for any commercial client

Common questions

Should testing be a separate charge?: Yes. Certification carries its own liability and its own time, and clients who need an EICR for a mortgage or a letting licence expect to see it named. Folding it into labor means you are giving it away.
How do I invoice for a rewire?: Stage it. A deposit for materials, one or more interim payments against agreed milestones, and a final balance on certification. Never carry the whole materials cost on a domestic rewire yourself.
What about commercial clients?: Expect Net 30 and a purchase order number. Put the PO number on the invoice — many accounts systems will reject an invoice without one, and the rejection is often silent.
Do I need to show VAT or sales tax separately?: If you are registered, yes — your client needs the tax shown as its own line to reclaim it. Enter your rate and it is calculated on the discounted subtotal.
How long should I keep certificates and invoices?: Longer than your tax records require. Electrical certificates are asked for at sale, remortgage and insurance claims, sometimes a decade later, and the invoice is what ties the certificate to the work and the payment. Six years is a common statutory minimum for records; keeping electrical paperwork indefinitely costs nothing and has saved a lot of disputes.