STAGING ENVIRONMENT - This is NOT the live site Go to Production →

InvoicerInvoicer, a product of GK Tools

Invoicing software for plumbers & heating engineers

Fix the leak, invoice from your phone before you leave. Simple invoicing built for plumbing and heating professionals, with no soggy paperwork.

Try 3 Months Free

Invoice in 60 seconds, with VAT worked out for you, on any phone.

Invoice 0217 To Mrs Hughes
Emergency leak repair£180.00
Parts: valve and fittings£42.50
VAT at 20%£44.50
Total£267.00

Free plumber invoice template (UK)

A ready-made plumber invoice showing a call-out charge, labour and parts. The example is for a VAT-registered business, so it adds VAT at 20% - if you are not VAT-registered, you do not add VAT. Download it, print it, or copy the layout - it is free and you do not need an account.

Example plumber invoice with a call-out charge, labour and parts, for a VAT-registered business, with VAT at 20%

What a UK invoice needs to show

  • A unique invoice number
  • Your name or business name, address and contact details
  • Your customer's name and address
  • A clear description of the work, and the date you did it
  • The date of the invoice
  • The amount for each item and the total owed
  • If you are VAT-registered: your VAT number and the VAT amount

Based on HMRC's guidance on invoicing customers.

Download the template (PDF) Or send one from Invoicer - free for 3 months

Why plumbers choose Invoicer

  • Invoice from the job site

    Fix the boiler, invoice from your van before driving away. The customer gets it while you are still on their street.

  • No wet paperwork

    No soggy paper invoices. No trying to write with wet hands. Everything is digital and professional.

  • VAT sorted

    VAT registered? Calculations are done automatically, on proper VAT invoices that meet HMRC requirements. Not registered? Turn it off. Simple either way.

  • Made for emergency call-outs

    Invoice immediately for emergency jobs. Get it sent before the customer forgets the urgency and delays payment.

  • Gas Safe and insurance certificates

    Upload your Gas Safe registration and public liability insurance. Attach them to invoices when customers ask for proof.

  • Track payments

    See which jobs are paid and which invoices are outstanding, from small repairs to big bathroom jobs. Chase payments before cash flow becomes a problem.

  • Works on your phone

    No laptop needed. Create professional invoices from your mobile between jobs. Big buttons, easy typing.

  • Unlimited invoices, each with its own number

    Send 1 invoice or 100 a month, from £50 tap fixes to £5,000 bathroom installs, for the same flat price. Each invoice gets its own number automatically: your prefix, the year and a number that runs in order. Nothing repeats, so every job is easy to trace.

Made for all plumbing & heating work

  • Plumbing repairsLeak repairs, tap fixes, emergency plumbing
  • Boiler workBoiler installs, servicing, breakdowns
  • Bathroom fittingFull bathroom installs, shower replacements
  • Central heatingRadiator installs, heating systems, power flushing
  • Drainage workDrain unblocking, gutter cleaning, waste pipes
  • Plumbing installationNew builds, kitchen plumbing, pipes & fittings

How plumbers use Invoicer

From fixing the problem to the invoice sent, in under a minute.

  1. Save your customers

    Add regular customers once: landlords, property managers, homeowners. Ideal for boiler services and maintenance contracts.

  2. Complete the job

    Fix the leak, replace the boiler, install the bathroom. Pack up your tools.

  3. Send the invoice in 60 seconds

    Pick the customer, add “Emergency leak repair, £180 + VAT” and use the send button. A professional invoice with the correct VAT lands in their inbox. Drive to your next job.

Invoicer on a phone: making a new invoice, with the customer list shown as large buttons
Making an invoice: your customers are big buttons, so you pick one with a single press.
Invoicer on a phone: an invoice with a message saying it has been marked as paid
When the money comes in, mark it paid and the invoice says so.

Pricing for plumbers

One simple price for unlimited plumbing invoices.

Unlimited customers and invoices on both. Cancel any time from your account.

InvoicerA product of GK Tools
To your plumbing business
Monthly£10 a month

Pay as you go. Stop whenever you like.

Yearly£100 a year

Works out at £8.33 a month, £20 less than paying monthly.

Due today£0.00

The first 3 months are free, and no card is needed to start.

Start your free trial

Questions from plumbers

Can I attach my Gas Safe certificate?
Yes. Upload your Gas Safe registration, public liability insurance, and any other certificates. Attach them to invoices when customers or landlords request proof.
Is it good for emergency call-outs?
Perfect for emergency work. Invoice immediately from your phone while still at the property. Get it sent before customer stress fades and payment gets delayed.
Can I use it for both small repairs and big bathroom jobs?
Absolutely. From a £60 tap replacement to a £4,000 bathroom install - works the same way. Add multiple line items for bigger jobs with parts and labour broken down.
Does it work for regular boiler services?
Perfect for it. Save your regular boiler service customers and invoice them in seconds after each annual service. You can also copy last year's invoice and change the date, which suits maintenance contracts well.
Will it work if my hands are wet/dirty?
Most plumbers wash their hands first, sit in the van, and then do the invoice before driving off. Takes 60 seconds and you leave knowing you're already invoiced.

Not your trade?

Invoicer is set up just as well for gardeners and landscapers, electricians, builders, sole traders, older tradespeople who want big, clear screens, members of trade schemes and anyone invoicing from a phone.

Invoice the next leak before you leave the street

Fix the leak, send the invoice from the van, and drive off already paid up to date.

Try 3 Months Free

No card needed. Works on any phone, tablet or computer.

↑