Invoicing for window cleaners

Invoice Koi is an invoice app for window cleaners, where a whole round invoices itself on your own cadence, month after month, without you writing any of them.

Make an invoice free

The iPhone app is coming to the App Store.

An illustration of a squeegee, a bucket, a section of water-fed pole, a scrim cloth and a ladder standoff, with a koi swimming among them.

A window cleaning round is a hundred small amounts, most of them the same amount as last month. The commercial customers are worse: they want a document with a reference on it before finance will pay forty pounds.

01On the document

What window cleaners
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
Exterior windows, house	each
Interior windows	each
Conservatory roof	each
Gutter clearing	each
Fascia and soffit cleaning	each
Shopfront and glazing	visit
Round, four weekly	month

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

A job, grouped Subtotals per section

ROUND

Shopfront and glazing, 4 visits£160

Subtotal£160

EXTRAS THIS MONTH

Interior glass, one visit£45

Fascia and signage clean£35

Subtotal£80

GUTTERS

Gutter clearing, front and rear£80

Subtotal£80

Total£320

Grouped line items work on all nine templates.

A photograph of a window cleaner reaching a first floor window with a water-fed pole on a terraced street in the morning.

02Why window cleaners use it

Three things that
save the evening.

The round bills itself

Set a recurring invoice per customer on the cadence you actually work, four weekly or monthly, and the draft is waiting on the day. It is the difference between a round that is billed and one that is mostly billed.

A price per property, held once

Every house on the round is its own price and you set it once. Nothing is worked out again at the gate, and nobody is charged last year's rate because that is what you remembered.

Pure water and poles are the costs

Resin, fuel and kit go in as expenses off their receipts, and the reports put them against what came in, so the round has a figure attached to it rather than a feeling.

03 · Questions

Asked by window cleaners.

Can I invoice a four weekly round rather than monthly?

Yes. The cadence is yours: weekly, fortnightly, four weekly, monthly or yearly. A draft appears on the day and waits for you to send it.

Can I add a one-off gutter clean to a regular customer bill?

Yes. Open the draft before you send it and add the line, or put the extras under their own heading so the regular figure stays recognisable.

Do commercial customers get a proper reference on the document?

Every invoice carries its own number, your business details, the dates and your terms, which is what a finance department needs before it will pay a small amount.

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