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Free plumber invoice template
Starts with the usual plumbing lines. Add your prices, your licence number and the compliance certificate if there is one, then save it as a PDF.
What to put on a plumber invoice
The compliance certificate (Victoria)
In Victoria a licensed plumber must issue a compliance certificate when the total value of the work is over $750, counting materials, appliances, labour and GST, even if someone else supplied the materials. Some work needs one at any price, such as installing or replacing a Type A gas appliance or altering a below-ground sanitary drain. Give it to the customer within five days. Putting the certificate number on the invoice ties the two together.
Parts on their own line
Customers accept a bill more easily when the tap, the fittings and the time are separate. It also shows the value of the job clearly, which matters for that $750 certificate threshold.
Other states
Every state has its own plumbing certificate rules. Check your regulator's page; the notes box is the place for whatever number it gives you.
The starting lines are examples with no prices: add your own rates. Rules checked October 2026; they can change, so check your state's regulator for anything that matters.
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Common questions
Does the $750 include GST?
Yes. In Victoria the value counts materials, appliances, labour and GST, including materials the customer supplied.
Do I charge GST on parts?
If you're registered for GST, yes: parts you supply are part of your taxable sale. The builder adds or includes it for the whole invoice.
Is it a tax invoice?
It's titled TAX INVOICE automatically when you choose a GST-registered option, and plain INVOICE when you're not registered, which is what the ATO expects.