Australian Tax Invoice Requirements [Complete 2026 Guide]

A GST-registered business in Australia must provide a tax invoice within 28 days whenever a customer asks for one, unless the sale is $82.50 or less including GST, according to the Australian Taxation Office. Below that threshold, no tax invoice is required, but past it, the ATO sets out exactly what has to appear on the document, how GST must be shown, and who is allowed to issue it. This guide works through every current ATO rule, from the 7 mandatory details on a standard tax invoice through to recipient-created tax invoices and the penalty for paying a supplier with no ABN.

When does a business have to provide a tax invoice?

A business only has to issue a tax invoice when a customer requests one and the sale is more than $82.50, including GST. That figure is not arbitrary: it is $75.00 plus 10% GST, which is why $82.50 shows up as the line in the ATO’s own guidance rather than a rounder number. Once a customer asks, the seller has 28 days to provide it. For sales at or under $82.50, the ATO doesn’t require a tax invoice at all, though most accounting software issues one anyway since it costs nothing extra and keeps the seller’s own records complete. What the tax invoice needs to contain from there depends on three things, per the ATO: the sale amount, whether the sale mixes taxable and non-taxable items, and who is actually issuing the document.

Figure 1: The GST-inclusive sale value above which a customer can require a tax invoice, and the ATO’s 28-day deadline to provide one. Source: Australian Taxation Office, Tax invoices.

What are the 7 mandatory elements of a tax invoice?

For taxable sales of less than $1,000, the ATO requires a tax invoice to contain enough information to clearly determine 7 details: that the document is intended to be a tax invoice, the seller’s identity, the seller’s ABN, the date the invoice was issued, a brief description of what was sold (including quantity, where relevant), the GST amount payable, and the extent to which each sale on the invoice is a taxable sale. Point six has a shortcut built in: if the GST component is exactly 1/11 of the total price, meaning the whole sale is taxable, the seller can simply write “Total price includes GST” instead of stating the GST dollar amount on its own line. That single distinction, GST shown separately versus folded into a compliant statement, is the most common formatting choice a small business’s invoice template has to get right, since it depends on whether every line item on the invoice is fully taxable. A mixed invoice, say one that bundles a GST-free item like basic food alongside a taxable item, can’t use the shortcut statement at all: it has to show the GST amount for the taxable portion separately, and make clear which lines it applies to.

Figure 2: For a fully taxable sale, GST works out to exactly 1/11 of the GST-inclusive total, which is why the ATO allows a single compliant statement instead of a separate GST line. Source: Australian Taxation Office, Tax invoices.

Does a $1,000+ sale need anything extra?

Yes. Tax invoices for sales of $1,000 or more, including GST, need everything the smaller-sale rule requires, plus the buyer’s identity or ABN. The ATO’s own guidance notes that a tax invoice built to the $1,000-plus standard can also be used for smaller sales, so many businesses simply issue one invoice format above and below the threshold rather than maintaining two templates. In practice, this is the rule that trips up service businesses invoicing corporate clients most often: a $1,200 consulting invoice that lists every required detail except the client’s ABN or trading name is technically non-compliant, even if the GST amount and seller details are correct. The buyer’s ABN is enough on its own to satisfy the identity requirement, so a trading name and postal address are a reasonable substitute only when the buyer genuinely doesn’t have one, such as a sole trader operating below the GST registration threshold. The GST amount itself also has to be rounded correctly on invoices with more than one line item: the ATO sets out a total invoice rule and a taxable sale rule for handling the fractions of a cent that come out of a 10% calculation, rounding 0.5 cents upward either way, and a seller and its customer don’t need to use the same one of the two.

Figure 3: What an Australian tax invoice must show changes at the $1,000 mark, when the buyer’s identity or ABN becomes mandatory alongside the standard 7 details. Source: Australian Taxation Office, Tax invoices.

Requirement	Under $1,000	$1,000 or more
Words “tax invoice”	Required	Required
Seller’s identity and ABN	Required	Required
Date of issue	Required	Required
Description of items sold	Required	Required
GST amount or “includes GST” statement	Required	Required
Buyer’s identity or ABN	Not required	Required

Table 1: The ATO’s tax invoice content requirements, compared across the $1,000 threshold.

What is a recipient-created tax invoice?

In certain transactions, the buyer, not the seller, issues the tax invoice. This is called a recipient-created tax invoice, or RCTI, and the ATO restricts it to specific situations, most commonly where the buyer is the one who establishes the value of the sale after delivery, such as a commission calculation or produce priced by post-delivery grading or weight. To issue an RCTI, both parties must be GST-registered at the time, they must have a written agreement that the buyer may issue the RCTI and the seller won’t issue a standard one, that agreement has to be current, and the Commissioner must have determined that the type of goods or services involved can be invoiced this way under the Recipient Created Tax Invoice Determination 2023. Once those conditions are met, the buyer, as the recipient, must issue the RCTI within 28 days of the sale date or the date the sale’s value is determined, whichever applies, and retain a copy just as a seller would for a standard tax invoice.

Figure 4: A recipient-created tax invoice runs on the same 28-day clock as a standard tax invoice, just issued by the buyer instead of the seller. Source: Australian Taxation Office, Tax invoices.

When does a business have to register for GST, and what happens if it doesn’t?

A business must register for GST once its GST turnover, current or projected, reaches $75,000 in a 12-month period, or $150,000 for a non-profit organization, according to the ATO. That threshold has stood at $75,000 since GST began on 1 July 2000, and it applies whether the turnover is the actual total for the current month plus the previous 11, or a projected total for the current month plus the next 11. Once a business becomes aware it will cross the threshold, it has 21 days to register. Missing that window carries real cost: a business that should have registered but didn’t may still have to pay GST on every sale made since the date it was required to register, even if GST was never charged to those customers, on top of possible penalties and interest. Getting the invoice fields right from the start, tax invoice heading, ABN, and GST breakdown all included, is far cheaper than reconstructing GST liability after the fact.

Figure 5: The GST registration threshold has been $75,000 for standard businesses since GST began in 2000, and $150,000 for non-profit organizations. Source: Australian Taxation Office, Registering for GST.

What happens if a supplier doesn’t quote an ABN?

A missing ABN doesn’t just make an invoice non-compliant, it shifts a withholding obligation onto the payer. If a business pays a supplier more than $75, excluding GST, and that supplier hasn’t quoted an ABN, the payer generally must withhold at the top rate of tax, 47% as it has stood since 1 July 2017, from the payment and remit it to the ATO rather than paying the supplier the full amount. That is why the ABN field on a tax invoice matters just as much to the buyer as it does to the seller: without it, the buyer is on the hook to withhold nearly half the payment, and the payer can face a penalty equal to the amount they should have withheld if they pay in full without doing so. This is exactly the kind of gap a jurisdiction-aware invoice generator is built to catch, since it labels and requires the ABN field automatically for an Australian business rather than leaving it as a blank text box a busy invoice sender can skip.

Figure 6: Withholding at the top rate of tax, 47%, applies when a payer pays a supplier more than $75 excluding GST and that supplier hasn’t quoted an ABN. Source: Australian Taxation Office, Statement by a supplier not quoting an ABN.

The Bottom Line

Australian tax invoice rules come down to a handful of fixed numbers: $82.50 as the sale value that triggers the right to demand a tax invoice, 7 mandatory details below $1,000, an extra buyer-ID requirement at $1,000 and above, a $75,000 GST registration threshold, and a 47% withholding rate that kicks in the moment a supplier fails to quote an ABN. None of these are complicated in isolation, but missing any one of them, especially the ABN field or the GST-inclusive statement wording, turns a routine invoice into a compliance problem for both sides of the transaction. An invoice generator built around Australian GST rules, one that switches the heading to “Tax Invoice” automatically once a seller is GST-registered and labels the tax-ID field ABN rather than a generic business number, removes most of that risk at the point the invoice is created rather than at tax time. These are the rules; putting them into practice on an actual invoice, line by line, is a separate walkthrough covered elsewhere on this site, alongside the fuller picture of how these thresholds interact with Australia’s overall GST revenue and the country’s late-payment statistics.

Frequently Asked Questions

What is the dollar threshold for requiring a tax invoice in Australia? A GST-registered seller must provide a tax invoice within 28 days of a customer asking for one, unless the sale is $82.50 or less including GST, according to the Australian Taxation Office. For sales at or under that amount, a tax invoice is not required, though keeping some record is still good practice.

What 7 details must appear on an Australian tax invoice? For taxable sales under $1,000, the ATO requires 7 details: the words “tax invoice”, the seller’s identity, the seller’s ABN, the date of issue, a description of the items sold, the GST amount (or a statement that the price includes GST), and the extent to which each sale on the invoice is a taxable sale.

Do I need the buyer’s ABN on a tax invoice? Only for sales of $1,000 or more including GST. The ATO requires tax invoices at or above that amount to also show the buyer’s identity or ABN, on top of the 7 details required for smaller sales.

What happens if I pay a supplier who has not quoted an ABN? If the payment is more than $75, excluding GST, and the supplier has not provided an ABN, the ATO generally requires you to withhold 47% of the payment at the top rate of tax and remit it to the ATO, rather than paying the supplier in full.

Sources and References

1. Australian Taxation Office: Tax invoices, the $82.50 threshold, 28-day rule, the 7 mandatory details, the $1,000 buyer-ID rule, and recipient-created tax invoice requirements.
2. Australian Taxation Office: Recipient-created tax invoices, the RCTI form and agreement requirements.
3. Australian Taxation Office: Registering for GST, the $75,000 and $150,000 turnover thresholds and the 21-day registration window.
4. Australian Taxation Office: Withholding if ABN is not provided, the $75 (excluding GST) payment threshold for no-ABN withholding.
5. Australian Taxation Office: Statement by a supplier not quoting an ABN, the 47% withholding rate, effective 1 July 2017.

Note: All figures verified as of October 2026.