GST Calculator
Add or remove GST from an amount. Choose whether your input is GST-exclusive or GST-inclusive.
Why use a GST calculator?
Benefits
- Instant GST breakdown for invoices.
- Supports add/remove modes.
- Helps validate totals quickly.
Common use cases
- Adding GST to quotes.
- Removing GST from inclusive totals.
- Checking receipts and accounting totals.
Field guide
Amount: Value either including or excluding GST.
GST %: The GST rate (e.g. 10).
Mode: Add GST (exclusive → inclusive) or Remove GST (inclusive → exclusive).