What each line on this invoice is for
A repair invoice answers three questions for the customer: what was wrong, what you did about it, and what it cost in time and in parts.
- Diagnosis
- Finding the fault is work. Give it its own line and name the problem as the customer described it.
- Labor
- The repair, with the part you replaced named in the line and the hours it took.
- Each part
- One line per part, with a quantity and its own price.
- Small hardware
- Clamps, connectors and similar small items. List them with a quantity, or put them together on one line.
In the notes, write what you tested after the repair and anything you noticed that is not urgent yet.
Where repair paperwork goes wrong: parts folded into labor. The customer sees one large number and calls to ask what the part cost. Separate lines answer that before the call.