GST Calculator in New Zealand
Online calculator to calculate GST in New Zealand. Allows you to get the price with GST or without GST quickly and accurately.
Incl. GST
Total incl. GST:
$0.00
- Price excl. GST:
- $0.00
- GST15%
- $0.00
- Total incl. GST:
- $0.00
GST formulas and examples
Use these formulas to check the amount added to a tax-free price or removed from a tax-included total.
Add tax
Total = tax-free price x (1 + rate / 100)
Remove tax
Tax-free price = tax-included total / (1 + rate / 100)
Tax amount
Tax = tax-free price x rate / 100
Quick example
Starting from $100, a 15% rate gives $15 in tax and $115 total.
Starting from $115, the tax-free amount is $100 and the tax is $15.
New Zealand GST: one broad 15% rate and specific zero rating
New Zealand uses Goods and Services Tax (GST). GST-registered businesses generally charge 15% on taxable supplies. This rate has applied since 1 October 2010.
New Zealand has no general reduced GST band. Certain transactions are taxed at 0% when the legal conditions are met, including qualifying exports, some land transactions and a sale of a going concern. Exempt supplies, such as many financial services and residential rents, are treated differently from zero-rated supplies.
New Zealand dollar example and overseas supplier rules
On NZ$1,000 before GST, the tax is NZ$150 and the total is NZ$1,150. For an inclusive total, the GST component is calculated with the statutory 3/23 fraction.
Overseas businesses may need to collect GST on remote services and low-value imported goods; overseas marketplace rules for listed services have applied since 1 April 2024. Offshore gambling duty is a separate obligation for covered providers. The calculator only performs 15% arithmetic. It does not test registration, residence, zero-rating, exemptions, customs treatment or offshore gambling duty. The result is orientative, not personalised tax advice.