GST Calculator NZ
Add or remove consumption tax and see the net and gross amounts.
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How it works
Adding tax multiplies the net price by the rate and adds it on. Removing tax works backwards from a tax-inclusive price to find the original net amount.
Gross = Net × (1 + rate); Net = Gross ÷ (1 + rate)Frequently asked questions
What is the GST rate in New Zealand?
The standard rate is 15%. New Zealand applies a broad single GST rate of 15% to almost all goods and services, with very few exemptions — one of the simplest GST systems in the world.
How do I add GST to a price?
Multiply the net amount by 1.15. For example, $100 plus 15% GST is $115.
How do I remove GST from a total?
Divide the tax-inclusive total by 1.15. So $115 ÷ 1.15 = $100 before tax, and the GST portion is $15.
Who has to register for GST?
Registration is compulsory once turnover exceeds NZ$60,000 in a 12-month period; smaller businesses may register voluntarily.
How do I find the GST portion of a GST-inclusive price?
Multiply the total by 3 and divide by 23. A $115 price contains $15 of GST.
Why is New Zealand’s GST considered simple?
Because a single 15% rate applies to nearly everything with very few exemptions, unlike systems with multiple reduced rates.
How GST works in New Zealand
New Zealand charges GST at a standard rate of 15% on most goods and services. It is a consumption tax collected in stages: businesses add it to their sales and reclaim the GST they pay on purchases, so the cost ultimately falls on the final consumer.
Adding and removing GST
To add 15% GST, multiply the net price by 1.15 — so $100 becomes $115, of which $15 is tax. To remove it from a tax-inclusive total, divide by 1.15: $115 ÷ 1.15 = $100 before tax.
Rates and registration
New Zealand applies a broad single GST rate of 15% to almost all goods and services, with very few exemptions — one of the simplest GST systems in the world. Registration is compulsory once turnover exceeds NZ$60,000 in a 12-month period; smaller businesses may register voluntarily.
Thanks to the flat 15% rate, the GST inside a tax-inclusive price equals the total multiplied by 3 then divided by 23. GST is filed with Inland Revenue, and registered businesses claim back the GST on their inputs.
Results are estimates for general guidance in New Zealand and may not reflect the latest local rates, fees or rules. Check official sources before making decisions.