GST Calculator.
Add or remove New Zealand's standard 15% GST rate. Enter one amount and we'll show the GST-exclusive price, GST amount and GST-inclusive total.
Is your amount before or after GST?
Select whether the amount you have excludes or includes GST, then enter the value below.
For a GST-exclusive amount, GST is 15% of the amount. A $100 price becomes $115 including GST.
For a GST-inclusive amount, the GST component is calculated using 3/23 of the total.
Some New Zealand supplies may be zero-rated, exempt or subject to special GST rules, so 15% does not apply in every situation.
This calculator is for general information only and uses New Zealand's standard 15% GST rate. It does not determine whether you are GST registered, whether a supply is taxable, zero-rated or exempt, or whether GST can be claimed. Results are rounded to the nearest cent and are not tax advice.
We can take the GST work off your plate.
Get help with GST returns, bookkeeping and year-end accounting, or calculate your indicative fixed fee online.