Electrician invoice wording and payment terms

Copy-and-paste blocks

• Labour line

  Copy

  Electrical installation labour — consumer unit replacement including isolation, removal of the existing board, installation and connection of new circuits.

• Materials line

  Copy

  Materials supplied — 18th edition consumer unit, RCBOs, cable, accessories and fixings as itemised above.

• Certification line

  Copy

  Electrical Installation Certificate — inspection, testing and issue of the EIC for the completed installation.

• Payment terms

  Copy

  Payment due within 14 days of invoice date. The certificate is issued on completion; copies can be re-sent at any time on request.

• Compliance wording

  Copy

  All work carried out in accordance with BS 7671 (IET Wiring Regulations) and notified where required under Part P of the Building Regulations.

Getting the terms to stick

Landlords and letting agents run on 30-day cycles and often need a purchase order number on the invoice — ask for it up front rather than chasing later.

If you don't state a payment period, the statutory default of 30 days applies — and you can charge statutory interest plus a fixed recovery cost on a commercial debt once it is late. Putting your terms on every invoice is what makes them enforceable without argument.

Common questions

Should the electrical certificate be a line on the invoice?

Yes. Testing and certification is real chargeable time, and showing it separately makes clear the customer is paying for compliance paperwork as well as installation.

Do electricians need to show a Part P or BS 7671 reference?

It is not a legal invoicing requirement, but landlords, agents and conveyancing solicitors routinely ask for it, so putting it on the invoice saves a phone call later.

How should I invoice a rewire?

In stages — first fix, second fix and test — with each invoice naming the stage it covers. It protects your cash flow and matches how the customer experiences the job.