March 2026 · 6 min read

FREE PLUMBING INVOICE TEMPLATE AUSTRALIA — FOR PLUMBERS & SOLE TRADERS

Plumbing jobs have a unique invoicing challenge: you're often quoting on the spot, using parts from your van, and dealing with emergency call-outs that carry premium rates. Your invoice needs to handle all of this clearly — call-out fees, parts with markups, labour rates, and sometimes warranty information.

Here's exactly what your plumbing invoice should include, ATO requirements, the mistakes that cost plumbers money, and an example you can reference.

WHAT TO INCLUDE ON A PLUMBING INVOICE

• Your business name, ABN, and licence number — plumbing is a licensed trade in every state
• Client's name and property address
• Invoice number and date
• Call-out fee — if you charge one, list it as a separate line item
• Description of work — be specific: "Replaced hot water system" not just "plumbing work"
• Labour — hours worked and hourly rate, or a flat rate for the job
• Parts and materials — itemise each part with the quantity and price
• Emergency/after-hours surcharge — if applicable
• Warranty information — especially for hot water systems, fixtures, and major installations
• GST breakdown (if registered)
• Payment terms and bank details

CALL-OUT FEES AND EMERGENCY RATES

Most plumbers charge a call-out fee (typically $80-$150) to cover travel time and the cost of showing up. This should be a separate line item on your invoice, not buried in the labour cost.

Some plumbers waive the call-out fee if the client proceeds with the work. If this is your policy, still show it on the invoice as a line item, then show it deducted — this highlights the value the client is receiving.

PARTS: COST PRICE VS MARKUP

Most plumbers mark up parts by 15-40% to cover the time spent sourcing, carrying stock in the van, and the convenience of having parts available immediately. This is standard practice across the industry.

On your invoice, list the part name, quantity, and the price you're charging (your marked-up price). You don't need to show your cost price — but the description should be specific enough that the client knows what was installed.

EXAMPLE PLUMBING INVOICE

ATO REQUIREMENTS FOR PLUMBERS

• ABN is mandatory — without it, the payer must withhold 47% of the payment
• GST registration required at $75,000 annual turnover — most full-time plumbers exceed this
• Taxable Payments Annual Report (TPAR) — if you engage subcontractors, you must report payments to them annually
• Tax invoices over $1,000 must include the buyer's identity or ABN
• Keep records for 5 years — invoices sent, parts receipts, travel logs
• Claim GST credits on parts, tools, fuel, vehicle expenses, and insurance

COMMON MISTAKES ON PLUMBING INVOICES

1. NOT LISTING YOUR LICENCE NUMBER

Plumbing is a licensed trade. Including your licence number builds trust and is often required for insurance claims. Some clients need your licence number for their records — save them the follow-up by including it on every invoice.

2. VAGUE PARTS DESCRIPTIONS

"Parts and fittings — $1,800" doesn't tell anyone what was installed. List the specific product: "Rinnai Infinity 26 continuous flow gas HWS." If there's a warranty issue in two years, both you and the client need to know exactly what was installed.

3. NOT SEPARATING CALL-OUT FEE FROM LABOUR

Burying the call-out fee in your labour rate creates confusion. List it separately — clients understand they're paying for you to show up. And if you waive it when they proceed with work, showing the deduction makes them feel like they got a deal.

4. MISSING WARRANTY INFORMATION

For major installations (hot water systems, gas appliances, bathroom renovations), include warranty details on the invoice. Product warranty from the manufacturer plus your labour warranty. This protects you and gives the client a record.

5. NO PAYMENT TERMS ON EMERGENCY JOBS

Emergency call-outs often happen fast — you fix the burst pipe and leave. But if you don't send a proper invoice with payment terms, chasing payment becomes difficult. Send the invoice the same day, with clear terms.

THE BOTTOM LINE

A proper plumbing invoice protects you, speeds up payment, and keeps the ATO happy. Itemise your parts, separate your call-out fee, include your licence number, and note any warranties. It takes minutes to set up but saves hours of chasing payments and sorting records at tax time.

Or let TheBrickBook do it for you. Log the job, add parts and hours, and generate a compliant invoice in seconds — no templates, no formatting, no missing details.