Tax Invoice Requirements in Australia: ABN, GST & ATO Rules (2026)
ATO requirements for Australian tax invoices — ABN, GST registration thresholds, and exactly what must appear on a compliant Australian invoice.
In Australia, the ATO (Australian Taxation Office) sets clear rules about what must appear on invoices. Whether you're a sole trader, contractor, or small business, getting your invoices right keeps you compliant and protects you if the ATO ever audits your records.
Do you need an ABN to invoice in Australia?
Yes — if you are carrying on an enterprise in Australia, you must have an Australian Business Number (ABN). Without an ABN on your invoice, the paying business is required by law to withhold 47% of the payment (the top marginal tax rate) under the no-ABN withholding rules.
Registering for an ABN is free and takes about 15 minutes at abr.business.gov.au. You need a Tax File Number (TFN) to apply.
Tax invoice vs regular invoice in Australia
The ATO distinguishes between a 'tax invoice' and a regular invoice:
- Tax invoice: issued by a GST-registered business for sales over $82.50 (including GST). The buyer needs a tax invoice to claim the GST credit.
- Regular invoice: issued by businesses not registered for GST, or for sales under $82.50 where no GST credit claim is needed.
What must an Australian tax invoice include?
- The words 'Tax Invoice' prominently displayed
- Your business name (or trading name)
- Your ABN
- The date of issue
- A brief description of the goods or services
- The GST amount payable (or a statement that the price includes GST)
- The total price including GST
- For invoices over $1,000: the buyer's identity (name and ABN)
GST registration threshold in Australia
You must register for GST if your GST turnover (gross income) is $75,000 or more per year (or $150,000 for non-profit organisations). Once registered, you must:
- Charge 10% GST on all taxable sales
- Lodge Business Activity Statements (BAS) quarterly or monthly
- Remit the GST collected to the ATO
- Claim GST credits on your business purchases
Australian invoice payment terms
There are no specific laws governing payment terms for most Australian businesses, though the Australian government is progressively rolling out prompt payment policies for government contractors. The most common terms are: Net 7 for small jobs, Net 14 for services, Net 30 for larger B2B work.
Under the PPSA (Personal Property Securities Act), you can retain ownership of goods until payment is received by including retention of title clauses. For construction, the Security of Payment Act in each state gives contractors the right to claim rapid adjudication for unpaid invoices.
Frequently asked questions
Can I invoice without an ABN in Australia?
Technically yes, but the paying business must withhold 47% of the payment under ATO rules. As a sole trader or small business, you should always include your ABN on every invoice.
What GST rate applies in Australia?
10% on most goods and services. Some items are GST-free (basic food, medical services, exports) or input-taxed (residential rent, financial services).
How long do I need to keep invoices in Australia?
The ATO requires you to keep all tax records, including invoices, for 5 years from the date you lodge the relevant tax return.
Do I charge GST to overseas clients?
Generally no. Most exports of goods and cross-border services to non-Australian clients are GST-free (zero-rated). However, digital services supplied to Australian consumers may be subject to GST — check the ATO website for your specific situation.
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