Invoice Koi

Invoicing for window cleaners

A window cleaning round is a hundred small amounts, most of them the same amount as last month. The work is not writing any one invoice, it is writing all of them, on time, for people who half expect to be forgotten. The commercial customers are worse: they want a document with a reference on it before finance will pay forty pounds.

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.
01On the document

What window cleaners
put on an invoice.

These go in your price book once, with your own prices against them. After that a line is one tap: the item, the description, the unit and the price fill themselves, and the totals resolve underneath.

LineUnit
Exterior windows, houseeach
Interior windowseach
Conservatory roofeach
Gutter clearingeach
Fascia and soffit cleaningeach
Shopfront and glazingvisit
Round, four weeklymonth

Prices are yours. Invoice Koi ships a handful of round placeholder lines to start from and never fills your book with figures you did not set.

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 are free, 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.
Price book
Exterior windows, houseeach
Interior windowseach
Conservatory roofeach
One tap puts the line on the invoice.
This job, grouped
ROUND£160
EXTRAS THIS MONTH£80
GUTTERS£80
Total£320
No signal needed. It is written here.
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.

Other trades