Mobile mechanic invoice wording and payment terms

Copy-and-paste blocks

• Call-out line

  Copy

  Call-out and diagnostics — attendance at the vehicle's location, fault diagnosis and road test where applicable.

• Labour line

  Copy

  Repair labour (per hour) — removal, replacement and refitting of the components listed below, including road test.

• Parts line

  Copy

  Parts supplied and fitted — as itemised above, supplied new and covered by the parts warranty stated in the notes.

• Payment terms

  Copy

  Payment due on completion by card or bank transfer. Trade and fleet accounts are invoiced on 30-day terms against a purchase order.

• Warranty and advisory wording

  Copy

  Parts are warranted for 12 months or 12,000 miles, whichever comes first. Advisories noted during this visit are listed above and are not covered by this invoice.

Getting the terms to stick

You have already fitted the parts, so payment on completion is the only sensible default. For fleet or trade customers, agree 30 days and a purchase order up front.

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

What vehicle details should be on a mechanic's invoice?

Make, model, registration and mileage at the time of work. It turns the invoice into a service record the owner can show a future buyer.

Should diagnostics be charged if the repair goes ahead?

That is your call, but say which on the invoice. Many mechanics show the diagnostic charge and then discount it when the repair is booked — visibly, as a line.

How long should a parts warranty be?

Twelve months or 12,000 miles is the usual standard for fitted parts. Put it on the invoice so there is no argument if the part fails.