If you’re running a small business in Australia, getting your invoicing right does more than help cash flow - it also keeps you compliant with the Australian Taxation Office (ATO) and protects your ability (and your customers’ ability) to claim GST credits.
The rules are specific, but once you understand them, they’re straightforward to apply. In this guide, we’ll walk through what a tax invoice is, when you must issue one, the exact ATO tax invoice requirements, and a few common edge cases (like mixed supplies, electronic invoices and foreign currency).
We’ll also share best-practice tips for payment terms, late fees and record-keeping, so your invoicing process is clean, compliant and supports healthy cash flow.
What Is A Tax Invoice In Australia?
A tax invoice is a specific type of invoice that includes the information the ATO requires for GST purposes. Not every invoice is a “tax invoice”, but most businesses registered for GST will issue tax invoices for taxable sales.
The big picture:
- If you’re registered for GST and you make a taxable sale, your customer generally needs a valid tax invoice to claim a GST credit.
- For sales under $82.50 (GST-inclusive), a tax invoice isn’t required for your customer to claim a credit, but you should still keep clear records.
- For sales of $82.50 or more (including GST), the ATO requires a tax invoice to claim a GST credit. For sales of $1,000 or more, there are a few extra pieces of information you must include.
When Do You Need To Issue A Tax Invoice?
If you’re registered for GST, you must provide a tax invoice for taxable sales of $82.50 (including GST) or more if your customer asks for one. The ATO expects you to issue it within 28 days of their request.
Many businesses issue tax invoices as a standard practice for every taxable sale - it’s simpler and supports a consistent process for you and your customers.
Remember, GST-free sales (like certain health or basic food items) don’t include GST, so you must not incorrectly display a GST amount on those invoices.
ATO Tax Invoice Requirements: What Needs To Be On It?
The ATO’s invoice requirements depend on the value of the sale. Below, we’ve broken it down into two tiers to help you check your invoices quickly.
For Taxable Sales Less Than $1,000 (GST-Inclusive)
Your tax invoice must include:
- The words “Tax invoice” - clearly visible.
- Your identity - your business name or trading name.
- Your ABN - the supplier’s ABN must be shown. If it’s missing, your customer may have to withhold under the no-ABN withholding rules.
- The date of issue - the date you issued the invoice, not necessarily the supply date (you can include both if useful).
- A brief description of the goods or services - enough detail for the ATO to understand what was sold.
- The total price - either:
- show the GST amount for the sale, or
- state that the total price includes GST (a simple “Total includes GST” line works).
If your invoice lists multiple items, identify which items are taxable and which are GST-free, or show the total GST for the taxable items.
For Taxable Sales Of $1,000 Or More (GST-Inclusive)
Include everything above, plus:
- The buyer’s identity or ABN - the recipient’s identity (e.g. business name) or ABN must be shown for higher-value invoices.
As with smaller invoices, if you have line items with different GST treatments, make sure it’s clear which items include GST and which don’t. You can show GST per line item or as a total.
Does A Tax Invoice Need An ABN?
Yes - the supplier’s ABN is a mandatory element of a tax invoice. If an invoice for a taxable sale doesn’t include an ABN, the payer may be required to withhold 47% under the no-ABN withholding rules and send that to the ATO. Including your ABN also helps your customer claim GST credits smoothly.
GST-Free And Mixed Supplies
If the sale is entirely GST-free, do not show a GST amount. Your invoice should still include the other required elements (identity, ABN, date, description, price), but you can make it clear that the supply is GST-free.
If your sale combines taxable and GST-free items, make sure the invoice:
- clearly identifies which items are taxable and which are GST-free, and
- shows the total GST amount for the taxable portion (or identifies GST per taxable line).
Electronic Invoices And eInvoicing
You can issue tax invoices electronically (PDF, email, accounting software) - they’re fully valid if they contain the required information and are readable. Australia also supports Peppol eInvoicing, which is a secure, standardised way to exchange invoices between accounting systems. You don’t have to use Peppol to comply, but it can streamline your processes if your trading partners are set up for it.
Whether you issue paper or digital tax invoices, keep clear, unaltered copies for at least five years.
Foreign Currency Invoices
You may issue an invoice in a foreign currency. If you do, make sure the GST amount is clearly ascertainable and, where needed, converted to Australian dollars in your records. Consistency in your conversion method is key.
Recipient Created Tax Invoices (RCTIs)
In some industries, the buyer issues the tax invoice instead of the supplier - these are called recipient created tax invoices. RCTIs are only allowed where eligibility criteria are met and the parties have a written agreement that includes specific wording. If you’re considering using them, review how Recipient Created Tax Invoices work before you proceed.
Invoices Issued By An Agent
Where supplies are made through an agent, the invoice can be issued by the agent on your behalf. The document should still meet all tax invoice requirements, and it should clearly identify the supplier (you) and show an ABN.
Credit Notes And Adjustments
If you issue a refund or change the price after issuing a tax invoice, you’ll generally need an adjustment note (often called a credit note). Your adjustment note should reference the original tax invoice and clearly explain the change in consideration and GST.
Common Invoicing Scenarios And Questions
Do I Have To Say “Tax Invoice” On The Document?
Yes. To be treated as a tax invoice, it must include the words “Tax invoice” prominently. Many POS receipts already include this - if not, they may not meet the ATO’s requirements.
No. Quotes and pro forma invoices aren’t tax invoices. You should issue a proper tax invoice when the sale occurs or when you’re entitled to receive payment.
Can A Cash Register Receipt Be A Tax Invoice?
Yes, as long as it includes the required information (including “Tax invoice”, supplier identity and ABN, date, description, total price, and GST amount or statement that the price includes GST). For amounts of $1,000 or more, it also needs the buyer’s identity or ABN - many POS systems don’t capture that by default, so check your setup.
What If I Charge A Deposit?
If a deposit constitutes part of the consideration for a taxable supply, you can issue a tax invoice for the deposit amount. When the balance is paid, you can issue a final tax invoice that references the deposit. Make sure your pricing and GST are consistently presented across both documents.
How Should I Show GST?
Either show the GST amount explicitly, or include a clear statement that the total price includes GST. If your invoice has a mix of taxable and non-taxable items, clarity is essential - label taxable lines or show the total GST for the taxable portion.
Best Practice: Terms, Payment And Record-Keeping
Beyond meeting ATO requirements, strong invoicing processes protect your cash flow and reduce disputes. A few practical tips:
- Set clear payment terms. Make your due date, accepted payment methods and any early-payment incentives obvious on every invoice. If you need a refresher on options and common pitfalls, check your approach to setting invoice payment terms.
- Back your invoices with robust contracts. Your invoice should align with your Terms of Trade or customer agreement (e.g. scope, price, billing milestones, variations, late payment consequences).
- Be careful with late fees. If you intend to charge them, ensure your terms allow it and that the fee is reasonable and not a penalty. See how Australian law treats late payment fees so your approach is compliant.
- Offer secure payment options. If you take direct debits or recurring payments, make sure your process complies with direct debit laws and you have clear consent from customers.
- Protect customer data. If you’re collecting names, addresses, emails or payment details for invoicing, you’ll likely need a Privacy Policy and processes that meet the Privacy Act, especially if you store data in your accounting or CRM system.
- Keep complete records for five years. Store tax invoices (issued and received), adjustment notes, and relevant communications. Good records make BAS preparation easier and support GST credit claims if the ATO asks.
- Align your website terms with how you invoice. If you sell online, ensure your checkout, pricing displays and Website Terms and Conditions match what appears on your invoices (including whether prices are GST-inclusive).
Do Your Invoices Comply With Other Australian Laws?
Invoicing touches a few legal frameworks beyond the ATO’s rules. Keep these in mind:
- Australian Consumer Law (ACL). Your pricing must be clear and not misleading. If you advertise prices, make sure it’s obvious whether GST is included. If you offer refunds or credits, your invoices and adjustment notes should reflect what was agreed under your customer rights obligations.
- Contract Law. Your invoices should match the agreed terms (scope, price, deliverables). Misalignment is a common source of disputes - which is why having clear Terms of Trade or service agreements in place is so valuable.
- Employment vs Contractor Issues. If you’re invoicing through a company you control for personal services, be mindful of personal services income (PSI) and related tax issues. While we don’t give tax advice here, it’s wise to chat with your accountant if this applies.
- Payment Surcharges. If you pass on card processing fees, ensure the surcharge is reasonable and reflects your cost of acceptance. Your invoices should clearly disclose surcharges if applied.
Finally, check that your accounting software template is configured correctly. Many systems can auto-insert “Tax invoice”, your ABN, and GST calculations per line, which makes compliance much easier.
Implementation Checklist: Make Your Template Compliant
Here’s a simple checklist you can apply to your invoice template today. If any item is missing, update your template before your next billing cycle.
- “Tax invoice” displayed clearly at the top.
- Supplier identity (your business or trading name).
- Your ABN (and ACN if you want to include it for reference).
- Invoice date (and optional supply date if different).
- Unique invoice number (good practice for tracking).
- Customer identity (mandatory for invoices of $1,000 or more).
- Clear description of goods/services; quantity and unit price.
- GST treatment per line (taxable vs GST-free) or clearly shown total GST.
- Total price, with either the GST amount shown or a statement that it includes GST.
- Payment terms and due date, accepted payment methods, and bank or payment details.
- Reference to your governing contract (e.g. PO number, proposal ID) if relevant.
- Your contact details for billing queries.
If you issue credit notes, set up a matching template with fields for the original invoice number, date, and the reason for the adjustment.
Practical Examples
To see how the rules play out, here are a few quick examples:
- $330 sale (GST-inclusive) to a consumer. Your invoice must say “Tax invoice”, show your identity and ABN, the date, a short description, total price, and either show GST ($30) or include a note that the total includes GST.
- $1,500 sale (GST-inclusive) to a company. As above, plus include the buyer’s identity (or ABN). If you’ve listed taxable and GST-free items, make sure it’s clear which is which, and show GST accordingly.
- GST-free service (e.g. an eligible health service). Do not show a GST amount. Your invoice should still say “Tax invoice” and include all other required elements, but the pricing should make clear there’s no GST.
- RCTI scenario (e.g. agriculture or freight). The recipient issues the tax invoice to you under a written agreement that meets ATO criteria. Make sure the agreement and process align with the rules for Recipient Created Tax Invoices.
Key Takeaways
- A tax invoice is required for taxable sales of $82.50 (GST-inclusive) or more if your customer asks - issue it within 28 days of request.
- Your tax invoice must include “Tax invoice”, your identity and ABN, the date, a clear description, and GST details; for sales of $1,000 or more, also include the buyer’s identity or ABN.
- Do not show GST on GST-free sales, and clearly separate taxable and GST-free items on mixed invoices.
- Electronic invoices are fine as long as they include the right information; keep unaltered records for five years.
- Use strong commercial foundations - clear Terms of Trade, compliant payment terms, fair late fee practices, and a current Privacy Policy - to support your invoicing and cash flow.
- Consider special cases like Recipient Created Tax Invoices, direct debit arrangements and foreign currency ahead of time so your templates and processes are consistent.
If you’d like a consultation on getting your invoicing, contracts and templates set up correctly for your Australian business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.
