Plumbing Invoice Template Australia: Licence, Labour, Materials and GST

A plumbing invoice in Australia should include your business name, ABN, plumbing licence number, customer details, invoice date, job address, call-out fee, labour, itemised materials, GST if registered, payment terms and a clear total. The best plumber invoice template separates labour from parts so customers understand the charge and small fittings do not disappear into a vague "materials" line.

This guide gives plumbers a practical invoice structure, then shows how to turn that structure into a faster workflow with SMASH for plumbers, the free invoice template, and the free invoice generator.

The basic plumber invoice format

Use this structure for most residential, commercial and maintenance plumbing jobs:

1. Your business name, ABN, plumbing licence number, email and phone number.
2. Customer name, billing address and job address if different.
3. Invoice number, invoice date and payment due date.
4. Job title, such as "blocked drain call-out" or "kitchen mixer replacement".
5. Call-out fee or first-hour minimum if you charge one.
6. Labour line items with hours, rate and total.
7. Materials line items with quantity, unit price and markup if applicable.
8. GST shown separately if you are registered.
9. Payment link or payment instructions.

The goal is approval clarity. A customer should be able to see what you did, what you supplied, and what they need to pay without calling you back.

Example plumbing invoice line items

For a mixer tap replacement:

Call-out fee - standard service call.

Labour - replace kitchen mixer, 1.5 hours.

Caroma mixer tap, 300mm flexi hoses x 2, thread seal tape.

For a blocked drain:

Emergency call-out - after-hours.

Labour - locate and clear blocked drain, 1.5 hours.

Drain snake equipment charge.

For a hot water service:

Supply and install 250L hot water unit.

Labour - installation and commissioning.

Tempering valve, fittings, pipework, disposal fee.

The invoice does not need to be long, but it should not hide the parts. Plumbing margins often leak through small materials that never make it onto the invoice.

Call-out fees and first-hour charges

If you charge a call-out fee, show it as its own line item. This avoids the common dispute where a customer says they did not know travel or attendance was billed separately.

Use plain labels:

• Standard call-out fee.
• Emergency call-out fee.
• After-hours call-out fee.
• First-hour minimum.
• Diagnostic fee.

If the call-out includes the first 30 or 60 minutes, make that clear on the invoice or quote. If it is separate from labour, show both lines.

Materials and markup

Most plumbers should itemise materials rather than using one flat "materials" line. Itemising helps with customer trust, GST records, and profit control.

Common plumbing materials to save in your catalog:

• Flexi hoses.
• Isolation valves.
• Washers and washer kits.
• Copper and PVC pipe.
• Compression fittings.
• Mixer taps.
• Tempering valves.
• Thread seal tape and consumables.
• Drainage fittings.

If you charge a markup, apply it consistently. The markup covers purchasing time, storage, wastage, vehicle stock and carrying cost. For deeper guidance, see materials pricing and how to charge materials on a plumbing invoice.

GST notes for plumbers

If your business is registered for GST, your invoice should be a tax invoice and show GST clearly. If you are not registered, do not add GST.

A GST-ready plumbing invoice should show:

• Subtotal before GST.
• GST amount.
• Total including GST.
• Your ABN.
• The words "Tax Invoice" where appropriate.

The free invoice generator helps you create a compliant manual invoice. SMASH goes further by remembering customers, rates, common materials and payment terms.

Quote before invoice

Many plumbing jobs start as a quote request from a customer, property manager or builder. Use the free quote generator for a manual quote, or use the Chrome extension to turn a Gmail quote request into a draft without leaving the inbox.

When the quote is approved, the invoice should not require retyping. Convert the approved quote, add any extra materials or labour, and send the invoice while the job details are fresh.

Plumber workflow with SMASH

SMASH for plumbers is built for the ute-and-job-site workflow:

• Save call-out, hourly and after-hours rates.
• Save common fittings and materials with markup.
• Create quotes and invoices by voice.
• Convert approved quotes into invoices.
• Send invoices with payment links.
• Sync invoices to Xero or QuickBooks on Starter and higher plans.

For example, say:

"Kitchen mixer replacement. Standard call-out, one and a half hours labour, Caroma mixer, two flexi hoses, thread seal, materials markup twenty percent."

SMASH turns that into clear line items instead of making you type from memory after the next job.

Related plumber resources

Start with these:

• SMASH for plumbers
• Invoice template
• Invoice generator
• Quote generator
• Voice invoicing
• Chrome extension
• Pricing

The Free plan includes 5 invoices per month. Starter is $15/month for unlimited invoices plus accounting sync, which suits plumbers who invoice every week.

Bottom line

A good plumbing invoice template is clear, itemised and ready for payment. A better plumbing invoicing system remembers your call-out fees, labour rates, materials and customer history so you can send the invoice before you leave the job site.