GST Calculator (AU)
Add or remove GST from any amount in seconds. Calculate the GST component, ex-GST price, and inc-GST price at the current 10% rate. Free Australian GST calculator.
GST Calculator (AU)
How it works
This calculator adds GST, removes GST, or isolates the GST component from a price using the standard Australian GST rate. It also supports simple multi-item, GST-free portion, and BAS-style projection views.
Examples
$100 ex GST: adding 10% GST gives $110. $110 inc GST: the GST component is $10 and the ex-GST amount is $100.
Methodology & assumptions
- Standard GST rate is 10% unless you change the hidden rate input.
- GST-free and WET adjustments are simple scenario tools.
- Not all business reporting cases are covered.
Disclaimer: Estimates only. Check BAS obligations, GST registration rules, and specialist taxes with your accountant or the ATO.
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How this result is worked out
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Important information
Disclaimer: Estimates only. Check BAS obligations, GST registration rules, and specialist taxes with your accountant or the ATO.