Everyday tool
GST Calculator
Add GST to a base price, or work out the base price and GST from a final amount.
—Base amount
—GST amount
—Total amount
Exclusive vs inclusive amounts
"Add GST" treats your amount as the base price and adds GST on top. "Remove GST" treats your amount as already including GST — common when a receipt only shows the final price — and works backward to find the base and tax split.