An electrician's invoice usually accompanies a certificate, and the two documents need to reference each other. When a customer sells the property, or an insurer asks questions after an incident, the invoice is what links the paid work to the certified work.
The other distinguishing feature is notifiable work. Where Part P applies, the notification reference belongs on the invoice, because it is the customer's evidence that the job was registered rather than simply done.
Beyond that, the structure follows most trades: materials itemised, labour shown as hours at a rate, and any variations from the original quote called out rather than absorbed.
Landlords and letting agents bill centrally for work at many properties.
Cable, accessories, consumer units. Not a single "materials" figure.
Including any second visit or return trip.
EIC, minor works or EICR number tied to this job.
The customer's proof that notifiable work was registered.
Extra work found on site, described and priced separately.
Note that some work qualifies for a reduced rate, which is worth checking rather than defaulting to 20%.
Two unlinked documents are much harder to use as evidence years later, when it matters most.
A final figure above the quote with no explanation is the most common cause of a withheld payment in the trades.
Certain residential work, including some energy-saving installations and qualifying renovations, attracts a reduced rate. Applying the standard rate by default can overcharge the customer.
The site address as well as the billing address, materials itemised rather than lumped together, labour as hours at a stated rate, the reference number of any certificate issued for the work, a Part P notification reference where the work was notifiable, and any variations from the original quote shown as separate priced lines.
Yes. The invoice and the certificate are the two halves of the same record, and cross-referencing them means the customer can produce coherent evidence when selling the property or answering an insurer. Without the link, two loose documents from the same month have to be reconciled by whoever is looking, often years later.
No. Some residential work qualifies for a reduced rate, including certain energy-saving material installations and qualifying property renovations, and rules change periodically. Applying the standard rate by default risks overcharging the customer and complicating your own return, so it is worth confirming the rate for the specific job rather than assuming.
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