Tax Invoice Requirements Australia

Who should issue a tax invoice?

A tax invoice is generally used by a supplier registered for GST when making a taxable sale. A supplier that is not registered for GST should issue a regular invoice and should not call it a tax invoice or add GST.

For most businesses, GST registration becomes compulsory when GST turnover reaches $75,000. Different thresholds or compulsory rules apply in some situations, including non-profits and taxi or ride-sourcing activities. Confirm registration with the ATO rather than relying on a template setting.

When a tax invoice must be provided

For taxable sales above $82.50 including GST, a GST-registered supplier generally needs to provide a tax invoice. When a customer requests a required tax invoice, the supplier generally has 28 days to provide it.

The exact requirement can depend on the sale type and who issues the document. Recipient-created tax invoices, agency arrangements, GST groups and mixed sales have additional rules, so ordinary invoice templates should not be treated as universal.

Required information for tax invoices under $1,000

For a standard taxable sale below $1,000, a valid tax invoice generally needs enough information to show:

• that the document is intended to be a tax invoice
• the seller’s identity
• the seller’s ABN
• the issue date
• a brief description of what was supplied, including quantity where relevant
• the price of the sale
• the GST amount payable, or a statement that the total price includes GST
• the extent to which each sale is taxable when the document contains different types of sales

The information can be presented in different layouts. What matters is that the document clearly contains the required details and accurately describes the transaction.

Additional requirement for sales of $1,000 or more

For a tax invoice covering a sale of $1,000 or more, the buyer’s identity or ABN is also required. This is why collecting the correct billing entity before invoicing matters. A contact person’s name alone may not identify the buyer that needs the invoice for its GST records.

If a customer supplies a purchase order, entity name or ABN, copy it carefully and check that the invoice is addressed to the correct organisation.

Taxable and non-taxable items on the same invoice

An invoice can include taxable, GST-free or input-taxed items, but the GST treatment must be clear. Show which items are taxable and the GST attributable to those sales. A single unexplained GST total can be inadequate when the document mixes different treatments.

Do not use the app’s GST toggle as a substitute for deciding whether the sale is taxable. The supplier remains responsible for the classification and should obtain tax advice where the treatment is uncertain.

Regular invoices for businesses not registered for GST

A non-GST-registered business can still issue a professional invoice. Use the word “invoice”, show the business name and ABN, identify the customer, describe the goods or services, state the amount due and include payment instructions.

Do not show a GST amount and do not use the words “tax invoice”. The ATO specifically distinguishes the document name based on GST registration.

Correcting an invalid or incomplete tax invoice

A buyer generally needs a valid tax invoice to claim GST credits. If a document is wrong or missing required information, issue a corrected replacement rather than ignoring the problem. Preserve the original record and make it clear which document supersedes it.

Common problems include the wrong ABN, missing buyer details on a sale of $1,000 or more, GST charged by an unregistered supplier, unclear taxable items and totals that do not reconcile.

Record keeping and backups

Keep tax invoices and supporting records in a form that can be retrieved and understood. Most business tax records need to be retained for at least five years, and some situations require longer. Retain the related quote, purchase order, receipts, calculations, payment record and any correction history.

If the invoice tool stores information on the device, export backups and retain final PDFs elsewhere. Local-only storage protects privacy, but it also makes the business responsible for preventing data loss.

Tax invoice checklist

1. Confirm the supplier is registered for GST.
2. Confirm the sale is taxable and identify any non-taxable items.
3. Use the words “tax invoice”.
4. Show the seller’s identity, ABN and issue date.
5. Describe the supply and show the price.
6. Show GST correctly or state that the total includes GST.
7. Add the buyer’s identity or ABN for sales of $1,000 or more.
8. Check the total and retain the final record.

Example: sale below $1,000

A GST-registered electrician issues a $660 tax invoice, including GST, for labour and materials. The document identifies itself as a tax invoice, shows the supplier’s identity and ABN, the issue date, a description of the work and the total price. It also shows the GST amount or states that the total includes GST. The customer’s identity is useful and commonly included, even though the additional buyer-identity requirement specifically applies to sales of $1,000 or more.

The invoice should still contain a unique number, due date and payment instructions as sound business practice, even where those fields are not the central GST validity requirements.

Example: sale of $1,000 or more

If the same supplier issues a $2,750 tax invoice, the buyer’s identity or ABN must also appear. Address the invoice to the correct purchasing entity, not just the employee who arranged the work. Where a group has several related companies, use the entity on the purchase order or written approval.

If the invoice combines taxable labour with a GST-free or input-taxed component, identify the treatment clearly and ensure the GST total relates only to the taxable portion.

GST rounding and calculation checks

GST amounts can involve fractions of a cent, particularly when several line items are calculated separately. The ATO recognises rounding methods, but the final invoice still needs to reconcile. Use one consistent approach and check that the displayed subtotal, GST and total add correctly.

Do not manually edit only the final GST number after the invoice has been generated. Correct the underlying line items or calculation settings so the document and retained data remain consistent.

Official sources and review notes

Tax rules change and unusual transactions can have additional requirements. Use the current ATO pages as the final reference.

• ATO: Tax invoices
• ATO: Setting up your business invoices
• ATO: Registering for GST
• business.gov.au: How to invoice