TopToolAIAustralia GST Calculator
Calculate Australia's GST (10%) on an amount — either adding it on top of a price or working out how much GST is already included in a total. AUD 220 with 10% GST included breaks down to AUD 200 net and AUD 20 GST — since Australia's GST is a flat, single rate, the maths stays simple regardless of the product category.
How to use Australia GST Calculator
Step-by-step guide to the boxes below. Open it only if you need help.
How to use Australia GST Calculator
Step-by-step guide to the boxes below. Open it only if you need help.
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1
Amount (AUD) Number
The amount you are working with, in Australian dollars.
Example: 100
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2
Mode Choose one
Pick 'Add 10% GST' if the amount has no GST yet. Pick 'Extract from total' if GST is already included.
Choose one: Add 10% GSTExtract from total
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3
Press “Calculate”
Click the button under the boxes. If something is missing or not valid, a short message tells you which box to fix.
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4
Read your result
You see the GST amount and the total. Change any box and try again to compare different numbers.
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