GST Calculator
Calculate GST-inclusive or GST-exclusive amounts at any tax rate.
Total (incl. GST)
1,180
Base amount1,000
GST amount180
Formula: Add GST: Total = Amount × (1 + rate/100). Remove GST: Base = Amount ÷ (1 + rate/100).
How It Works
- 1Choose whether to add or remove GST.
- 2Enter the amount and GST rate.
- 3View the base amount, GST and total.
Features
- Add GST to a base amount
- Remove GST from an inclusive amount
- Any custom tax rate
Privacy
All calculations happen instantly in your browser. Nothing you enter is ever sent anywhere.