Invoicing for garage door engineers

Invoice Koi is an invoice app for garage door engineers, with the spring, the cables and the operator itemised as parts, each at its own price from your book.

Make an invoice free

The iPhone app is coming to the App Store.

An illustration of a torsion spring, a length of track, a roller, an Allen key set and a remote handset, with a koi swimming among them.

A garage door goes wrong in a way the customer cannot see. They know it will not lift; you know it is a broken torsion spring, and that the cables should go at the same time because they are the same age. The invoice has to make that case, which means the parts have to be visible on it rather than folded into a repair charge.

01On the document

What garage door engineers
put on an invoice.

Save these items with your own rates. Tap to add them to an invoice, with the unit, price and totals filled in.

Line	Unit
Call-out and assessment	each
Engineer labour	hrs
Torsion spring, supplied and fitted	each
Cables and drums, pair	pair
Operator and motor unit	each
Service and adjustment	each
Door removal and disposal	each

Set your own prices. The app's starter rates are placeholders. To bill one job today with nothing installed, the free garage door engineer invoice template opens in your browser with these lines on it.

A job, grouped Subtotals per section

ATTEND

Call-out and assessment£60

Subtotal£60

PARTS

Torsion spring£95

Cables and drums, pair£55

Subtotal£150

FIT AND BALANCE

Engineer labour, 2 hrs£130

Service and adjustment£45

Subtotal£175

Total£385

Grouped line items work on all nine templates.

A photograph of a garage door engineer on a suburban driveway working at the spring bar of a half-open door, van behind.

02Why garage door engineers use it

Three things that
save the evening.

Signed off on the drive

The customer signs the finished document on the phone with a finger, and the signature prints on the PDF they keep. It is agreed while you are both standing in front of the door.

The part is not hidden in the labour

Group the spring and the cables under parts and the fitting under labour, each with its own subtotal, so the price reads as two decisions rather than one number to argue with.

Quote the motor, bill the repair

An estimate for a new operator can sit alongside the repair that got them through the week. When they say yes in a month, it converts to an invoice with the lines and the terms carried across.

03 · Questions

Asked by garage door engineers.

Can I quote for a new door and invoice the repair separately?

Yes. They are two documents for the same client. The estimate waits until it is accepted and converts then; the repair invoice goes out today.

How do I price a spring that comes in two sizes?

Keep both in the price book as their own lines with their own prices, and pick the one you fitted. Nothing has to be retyped on the driveway.

Does the customer need to be there to sign?

No. A signature is optional. Without one the document is still a complete invoice with your business details, the lines and the total on it.

Weighing up apps? Invoice Koi vs Square Invoices and Invoice Koi vs Invoice Fly set the features side by side, including where they win. Or see all 12 comparisons.