Free Invoice Generator for Australian Businesses for Trades & Construction
Create a GST-ready tax invoice for trade work in minutes, with labour and materials lines and clear payment terms.
Last updated 31 May 2026
This free invoice generator is set up for tradespeople and construction businesses who need to bill for labour, materials and call-out fees quickly and correctly. Enter your business name and ABN, add the client and the job, list your labour hours and materials, and the generator calculates GST at 10% and builds a professional tax invoice you can download as a PDF. It is ideal for electricians, plumbers, builders and other trades who invoice from the ute or the office and want a clean, compliant document without paying for software for the occasional job.
How to use this tool
- 1
Add your details
Enter your business name, ABN and contact details, then the client you are billing.
- 2
List the items
Add each item or service with a quantity and price; GST is calculated automatically.
- 3
Download or print
Preview the invoice live, then download a PDF or print it to send to your client.
What makes a valid Australian tax invoice
For sales of 1,000 dollars or more, a valid tax invoice must show that the document is intended to be a tax invoice, your business identity and ABN, the date it was issued, a brief description of the items sold including quantity and price, the GST amount payable or a statement that the total includes GST, and the buyer identity or ABN. For sales under 1,000 dollars the buyer details are optional. This generator includes all of these fields, so the invoices you create meet the requirements and your clients can claim their GST credits without chasing you for a corrected document.
How GST appears on your invoice
If your business is registered for GST you must add 10% to your taxable sales and show it on the invoice. This generator calculates GST automatically as you add line items and displays the subtotal, the GST amount and the total clearly, so there is no manual maths to get wrong. If you are not registered for GST, you should not charge it, and you can set the GST to zero. Showing GST correctly matters because it determines what your client can claim back and what you report on your business activity statement each quarter.
Getting paid faster
A clear invoice with a due date, payment terms and easy payment options gets paid faster than a vague one. Include your preferred payment method, whether that is bank transfer with a BSB and account number, BPAY or a payment link, and set a specific due date rather than a vague on receipt. Numbering your invoices sequentially helps both you and your client track what has been paid. If you find yourself creating dozens of invoices a month by hand, re-entering the same client and item details each time, that repetition is a sign your invoicing is ready to be automated end to end.
From manual invoices to an automated workflow
A free generator is perfect for the occasional invoice, but a growing business quickly outgrows manual document creation. When invoices need to flow into your accounting system, trigger payment reminders, reconcile against bank feeds and feed your BAS, doing it by hand becomes a daily drag and a source of errors. The same details get keyed into a quote, then an invoice, then accounting software, then a reminder. Automating that chain removes the double-handling, speeds up cash flow and frees your team from chasing payments. The generator below covers the one-off need, and when the volume grows, the workflow itself is what is worth automating.
Invoicing tips for trades and construction
Trade invoices are clearest when labour and materials are itemised separately, so the client can see what they are paying for and you have a record for your own job costing. Include the job address or reference, the dates work was carried out, and a breakdown of hours by rate if you charge different rates for standard and after-hours work. For larger jobs, progress claims billed at agreed milestones keep cash flowing rather than waiting until completion. Always show your ABN and set clear payment terms, because trade work often involves materials you have already paid for, so getting paid on time protects your cash position. When you are issuing progress claims and chasing payments across many jobs, automating the quote-to-invoice flow saves the most time.
Who uses this tool
Electricians and plumbers
Bill labour and materials with GST on a clean, professional invoice.
Builders
Issue a progress claim invoice for a milestone on a larger job.
Subcontractors
Send a compliant tax invoice with your ABN to head contractors.
Frequently asked questions
How do I create a tax invoice in Australia?
A tax invoice needs your business name and ABN, the date, a description of what was sold, the GST amount or a statement that the total includes GST, and the buyer details for sales of 1,000 dollars or more. Fill in the fields above and the generator builds a compliant invoice you can download.
Is this invoice generator really free?
Yes. You can create, preview, print and download invoices without signing up or paying. The tool runs in your browser, so your details stay on your device unless you choose to email the result to yourself.
Does the generator calculate GST automatically?
Yes. As you add line items it calculates 10% GST and shows the subtotal, GST amount and total. If your business is not registered for GST you can set the GST to zero so no tax is added to the invoice.
Do I need an ABN to send an invoice?
If you are running a business you should quote your ABN on invoices, otherwise the payer may be required to withhold 47% of the payment. If you do not have an ABN because the activity is a hobby, you can provide a statement by a supplier form instead.
Can I download the invoice as a PDF?
Yes. Once you have filled in the details you can download a clean PDF to email to your client, or print it directly from your browser. The PDF keeps the professional layout and the GST breakdown intact.
How do I number my invoices?
Use a simple sequential system such as INV-0001, INV-0002 and so on, so each invoice is unique and easy to track. The generator suggests the next number automatically, which helps you avoid duplicates and makes reconciliation at tax time much easier.