What must be on a Tax Invoice in Australia?

A Tax Invoice must clearly show the words 'Tax Invoice', your business name and ABN, date of issue, description of goods or services, GST amount shown separately (or a statement that the price includes GST), and the total price including GST. You need one for sales over $82.50 if you are GST-registered.

When do tradies have to register for GST in Australia?

You must register for GST if your annual turnover is $75,000 or more. The GST rate is 10% and applies on top of your labour and materials unless you quote GST-inclusive prices and state that clearly on the invoice.

Do I need an ABN to invoice as a tradie?

Yes. Without an ABN, clients may withhold 47% of your payment at the top withholding rate. Getting an ABN is free through the Australian Business Register via the ATO website.

What payment terms are standard for Australian tradies?

14 to 30 days is common. Smaller jobs often use 7 days. State your terms clearly on every invoice and send it as soon as the job is done.

How to Invoice as a Tradie in Australia — GST Guide (2026)

Getting paid on time is one of the hardest parts of running a trade business — and it often comes down to the invoice. A vague, late, or incomplete invoice gives clients a reason to delay payment, creates headaches at tax time with the ATO, and makes you look less professional than the licensed tradie you are.

Whether you are finishing a bathroom reno, invoicing a builder for a subcontracted rough-in, or billing a homeowner for a same-day repair, a correct Tax Invoice protects you legally, keeps your BAS records straight, and gets money into your account faster. Clients take you more seriously when paperwork matches the quality of your work — and the ATO expects proper records when it is time to lodge.

This guide walks you through Tax Invoice requirements, GST basics, ABN obligations, payment terms, and how to invoice without the admin eating your evenings.

What is a Tax Invoice in Australia?

In Australia, if you are registered for GST, you must issue a Tax Invoice for any taxable sale over $82.50 (including GST). That threshold is lower than many tradies expect — a single day's labour plus materials on a domestic job can easily cross it.

A Tax Invoice is not just a receipt with a total. It is a specific document the ATO recognises. Your invoice must include:

The words "Tax Invoice" — clearly visible at the top of the document.
Your business name and ABN (Australian Business Number) — sole trader or company name, plus your 11-digit ABN.
Date of issue — when you sent the invoice.
Description of the goods or services — what you did, where, and what materials were supplied.
GST amount shown separately — OR a clear statement that the total price includes GST (if you quote GST-inclusive).
Total price including GST — the amount the client owes.

Tips that keep you ATO-compliant:

Be specific on line items. Write "Supply and install 6m Colorbond fence, including posts and concrete" — not "fence job."
Show GST as its own line when you quote GST-exclusive — most tradies and accountants prefer this for BAS reporting.
Number every invoice — sequential numbering (e.g. INV-2026-0042) helps at audit time and when chasing payment.
Match the quote. If you sent a written quote, the invoice should align so the client does not dispute unexpected charges.

If you are not GST-registered, you still need a proper invoice with your ABN — but you do not call it a Tax Invoice and you do not charge GST.

GST for tradies — the basics

GST (Goods and Services Tax) in Australia is 10%. It applies to most goods and services you sell as a tradie, including labour and materials, once you are registered.

When to register: You must register for GST if your annual turnover is $75,000 or more. Below that threshold, registration is optional for most businesses — but some tradies register early to claim GST credits on tools, vehicles, and materials. Talk to your accountant about what suits your situation.

GST-exclusive vs GST-inclusive pricing:

GST-exclusive: You quote $1,000 + GST. The invoice shows subtotal $1,000, GST $100, total $1,100. Common on commercial and builder work.
GST-inclusive: You quote $1,100 total including GST. The invoice must state that the price includes GST, and you still need to show how much GST is included (or the ATO's required wording).

Mixing these up is a common mistake — a homeowner thinks your quote is the final price, then questions the extra 10% on the invoice. State clearly on quotes and invoices whether prices are + GST or inc. GST.

GST rules for residential renovations, new homes, and certain materials have exceptions. Do not guess. Check the ATO website or speak with a tax agent who works with tradies before you set your default pricing.

Do I need an ABN as a tradie?

Yes. Almost every tradie doing paid work in Australia needs an ABN.

If you invoice without an ABN, a business client may be required to withhold 47% of your payment (the top withholding rate) and send it to the ATO. That is a brutal hit to cash flow for a job you already finished.

Getting an ABN is free through the Australian Business Register. You can apply online in minutes if you have your details ready. Your ABN goes on every quote, invoice, and business letterhead — it is how the ATO and your clients identify your business.

Sole traders use their individual name or a registered business name. Companies and trusts have separate ABN rules — your accountant can confirm the right structure.

Payment terms for Australian tradies

14 to 30 days is the standard payment window on Australian trade invoices. Many residential tradies use 7 days for smaller jobs or repeat clients where cash flow matters. Commercial builders and facilities managers often expect 30 days — sometimes longer on large projects.

Whatever you choose, state it in plain language on every invoice:

"Payment due within 14 days of invoice date."

Send the invoice the same day you finish the work whenever possible. The longer you wait, the longer you wait to get paid — and the job fades from the client's mind.

For larger jobs, deposits and progress invoices are common — each still needs its own invoice number, Tax Invoice format (if GST-registered), and due date.

How HomiWorks helps Australian tradies

HomiWorks is built for tradies who work from the job site, not a desk. Here is how it fits Australian invoicing:

Set GST once in account settings — enter your tax label as "GST" and rate as "10%". Every quote and invoice pre-fills correctly so you are not retyping numbers between jobs.
GST shown as a separate line on every invoice — ATO-friendly layout without spreadsheet formulas.
Add your ABN to your business profile — it appears on every Tax Invoice you send.
Send Tax Invoices instantly via WhatsApp or email — use the channel your client actually reads.
Automatic payment chasing at 7 and 14 days overdue — polite reminders go out without awkward follow-up texts after a long day on site.

You stay focused on the work; the admin runs in the background.

Try HomiWorks free for 7 days →

Final Thoughts

Invoicing correctly in Australia comes down to a few essentials: get your ABN, register for GST when you hit the $75,000 turnover threshold (or earlier if it makes sense for your business), issue proper Tax Invoices with every required field, and send them as soon as the job is done.

If you want to skip the paperwork, HomiWorks handles quotes, GST defaults, ABN on your profile, and payment follow-ups from your phone.

HomiWorks is the AI business tool built for tradies. Quote, invoice, and chase payments — all from your phone.