Do I Add GST to My Invoice?

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

If you're GST registered:

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

If you're not GST registered:

Issue a standard invoice — don't label it "Tax Invoice"
Don't add or display GST
Still show your ABN (to avoid No-ABN Withholding at 47%)
Optionally add a note: "Not registered for GST"

Some sales are GST-free even when you're registered — basic food, most health services, education, exports, and childcare. You include these on tax invoices but apply $0 GST. InvoiceSonic handles all of this with a single GST toggle in your settings.

Do I Add GST to My Invoice?

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