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Tax & Margin Calculator

GST calculator for New Zealand

Add GST to a net amount, strip it back out of a total, and price from cost to shelf — using New Zealand's own rates and currency.

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GST in New Zealand, at a glance

These are the published figures the calculator starts from. Every one of them is editable, because the rate on your invoice is the rate that matters.

Example
Item Value
Tax nameGST
Standard rate15%
Other published rates0%
CurrencyNZD
Registration thresholdNZ$60,000

A worked GST example

Computed by the same code the calculator runs, so the figures here are exactly what the tool produces.

Example
Item Value
Before taxNZ$1,000.00
GST 15%NZ$150.00
Total including taxNZ$1,150.00
Tax recovered from the totalNZ$150.00

Three steps

  1. Choose New Zealand, and the 15% standard rate and currency are applied.
  2. Enter your amount, and say whether it already includes GST.
  3. Read the split, or switch to the margin tab to price the item.

GST questions for New Zealand

What is the standard GST rate in New Zealand?
15%. Reduced and zero rates also apply to particular goods and services, and they are listed in the table above — pick one of the slabs, or type the rate your invoice uses.
How do I take GST back out of a total?
Divide by 1 plus the rate rather than multiplying by it. At 15%, a total divided by 1 plus 15% gives the amount before tax, and the difference is the tax. Choose "Remove tax" and this is done for you.
Do I have to register for GST?
Registration usually becomes compulsory above a turnover threshold, which is shown in the table above where one applies. Thresholds have conditions and exceptions, so confirm your position with New Zealand's tax authority or your accountant.

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