Do I Need to Include GST on My Invoice?

You only need to include GST on your invoice if your business is registered for GST. In Australia, GST registration is mandatory once your annual turnover reaches $75,000 ($150,000 for non-profits). If you're not registered, you don't charge or show GST on your invoices.

If you're GST registered:

  • Label the invoice "Tax Invoice"
  • Include your ABN
  • Add 10% GST to the subtotal of taxable items
  • Show the GST amount on its own line, or state "Total price includes GST"
  • Display the final total clearly

If you're not GST registered:

  • Issue a standard invoice (not a "Tax Invoice")
  • Still show your ABN to avoid No-ABN Withholding (47%)
  • Don't charge or display GST
  • Optionally add a note: "Not registered for GST — no GST applies"

Some sales are GST-free even if you're registered — basic food, education, and most health services. Mixed invoices can include both taxable and GST-free items as long as the GST treatment of each is clear. InvoiceSonic handles GST and non-GST businesses with a single toggle.

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