What is the difference between a receipt and a tax invoice?

These two documents are often confused — and sometimes the same piece of paper is both. Understanding the difference matters for GST purposes and for knowing what record to ask for.

What a receipt does

A receipt is proof of payment. It confirms that money changed hands — that you paid for something. It typically shows the merchant name, date, amount, and what was purchased. A receipt does not necessarily contain GST information, and it may not include the supplier's ABN.

What a tax invoice does

A tax invoice is a specific document required under Australian GST law. It confirms that a taxable sale occurred and provides the information needed to claim a GST input tax credit. For amounts of $1,000 or more, a tax invoice must include:

• The words "Tax Invoice"
• The supplier's identity and ABN
• The date the document was issued
• A description of what was sold
• The GST amount payable, or a statement that the total includes GST
• The total amount payable

For amounts under $1,000, a simplified tax invoice (which can omit the buyer's details) is acceptable.

When do you need a tax invoice specifically?

If you are registered for GST and want to claim an input tax credit for a purchase, you need a valid tax invoice — not just a receipt. A receipt from a cafe might be sufficient for a minor deduction, but a receipt that does not show the ABN and GST content is not a tax invoice and cannot be used to claim GST credits.

When are they the same document?

Many businesses issue a document at point of sale that functions as both — it confirms payment and contains all the required tax invoice details. A supermarket register receipt, for example, typically includes the ABN and indicates that the price includes GST. This serves as both a receipt and a tax invoice for amounts under $1,000.

What to do in practice

If you are an individual employee claiming work expenses (not a business claiming GST credits), a clear receipt is usually sufficient. If you run a GST-registered business and want to claim back GST on purchases, you need a valid tax invoice. When in doubt, ask the supplier to issue a proper tax invoice — it costs them nothing and protects your claim.