How do I add GST to a price?

Multiply the GST-exclusive price by 1.1, or add 10%. For example, $100 plus GST is $110, of which $10 is GST.

GST Calculator Australia — Add or Remove 10% GST

Add 10% GST to A$100 and the total is A$110, of which A$10 is GST. Enter your own amount below.

Amount (A$)

Mode

GST-exclusive amount–

GST (10%)–

GST-inclusive total–

How GST works in Australia

GST is a flat 10% on most goods and services. Add GST: multiply the price by 1.1. Remove GST: divide the inclusive total by 1.1 — the GST component equals the total divided by 11. Some items (basic food, certain health and education) are GST-free.

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Frequently asked questions

What is the GST rate in Australia?

A flat 10% on most goods and services; some items are GST-free.

How do I remove GST from a price?

Divide the inclusive total by 1.1; the GST is the total divided by 11.

How do I add GST?

Multiply by 1.1 (add 10%). $100 + GST = $110, of which $10 is GST.

Estimates for guidance only. Confirm with the ATO.