Scope
What is the GST rule in Australia?
How should the tax be displayed in Australian invoices?
Summary
GST is set at a flat rate of 10% and is required to be included in the invoice of your product or service. As per the Australian tax invoice rules, a tax invoice with sales in excess of A$1000 must capture the GST for each line item individually.
A GST invoice sent to a customer must contain the following information
The document should be titled Tax Invoice.
The seller's identity
The seller's Australian business number (ABN)
The date the invoice was issued
A brief description of the items sold, including the quantity (if applicable), the price, the GST amount (if any).
Related Documentation
https://www.chargebee.com/docs/australian-gst.html#gst-rules_gst-invoices