Tool
NZ GST calculator
Use this quick calculator to add 15% GST to a net amount or extract GST from a gross amount. It is useful for checking invoice totals, quotes, and pricing.
Calculator
NZ GST calculator
Results
Subtotal
$1,000.00
GST
$150.00
Total
$1,150.00
New Zealand GST is usually 15%. If you enter a GST-exclusive amount, the calculator adds GST. If you enter a GST-inclusive amount, it extracts the GST portion.
Where this fits in the invoicing workflow
A calculator is useful for a quick check. An invoicing system becomes more useful when you want the amount, customer, due date, PDF, and payment history saved together in a repeatable process.