Invoice Line Item Calculator
Work out one line: quantity, price, discount and tax, with the arithmetic shown.
Plumbing Invoice Generator
Call-out, labour, parts and certification on a plumbing invoice.
Your invoice
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Exactly what printsQuick Tool Overview
The Plumbing Invoice Generator covers what a job on site produces: a call-out charge, labour by the hour with an out-of-hours uplift, every part itemised, and the certificate number and warranty recorded — printable from a phone.
- What it does
- Builds a plumber’s invoice on site
- You give it
- Call-out, hours, parts and the certificate
- You get back
- An itemised invoice to print or PDF
- Best for
- Plumbers, heating engineers and gas fitters
About the Plumbing Invoice Generator
A plumbing invoice is usually written on a phone in someone’s kitchen, and it has to carry four things: the call-out, the labour, the parts, and whatever certificate the job produced. Leave any of them off and the conversation about the price happens after the work rather than before.
This builder covers all four. The call-out charge goes on as its own line, labour goes on in hours or half-days with an out-of-hours uplift where it applies, and parts go on individually with their own tax treatment. The certificate number and the appliance or system worked on go in the header, which is what a landlord or a homeowner actually files.
Site address, job reference and any warranty on the work are all on the document. It prints to A4 or saves as a PDF from a phone, with no account and no subscription.
Key features of the Plumbing Invoice Generator
Call-out on its own line
So the labour rate reads honestly.
Parts itemised
A lump "materials" figure is the most-queried line on any trade invoice.
Out-of-hours uplift
Shown as its own line rather than a mysteriously higher rate.
Certificate recorded
Gas Safe, unvented or building regulations reference in the header.
Warranty stated
How long the work is guaranteed, and on what.
How to use the Plumbing Invoice Generator
-
1
Charge the call-out separately
Its own line, so the labour rate reads honestly.
-
2
Bill labour by the hour
With an out-of-hours or emergency uplift on its own line where it applies.
-
3
List every part
Individually, with quantities — a single "parts" figure is what gets queried.
-
4
Record the certificate
Gas Safe, unvented or building regulations reference in the header.
-
5
State the warranty
How long the work is guaranteed, and what it covers, in the notes.
Frequently asked questions
Most do, and showing it as its own line is fairer than hiding it in a first-hour rate. What matters is that the customer knew about it before the visit — the invoice is not the place to introduce it.
Itemised with quantities. A lump "materials" figure is the most-queried line on any trade invoice, and itemising it takes a minute and removes the argument.
If you are registered, yes, at the standard rate for most domestic work. Some energy-saving materials and certain renovations attract a reduced rate, and new-build work is often zero-rated — check the job type rather than assuming.
Whatever the work produced: a Gas Safe building regulations notification, an unvented hot water certificate, or a landlord gas safety record. Putting the reference on the invoice is what lets a landlord find it later.
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