NZ
NZ Tax Tools

NZ GST Calculator

Add or remove 15% GST, check if your turnover crosses the $60,000 registration threshold, and work out your filing frequency, accounting basis, and next return due date.

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About NZ GST

Goods and Services Tax (GST) is a consumption tax charged at 15% on most goods and services in New Zealand.

If your business has (or expects) taxable turnover of more than $60,000 per year, you must register for GST with IRD.

To add GST: multiply the net price by 1.15.
To remove GST: divide the gross price by 1.15.

Adding 15% GST to common amounts

To add GST, multiply the GST-exclusive price by 1.15. To pull GST out of a GST-inclusive total, multiply the gross by 3 and divide by 23 (the GST fraction at 15%).

GST-exclusive GST (15%) GST-inclusive
$50 $8 $58
$100 $15 $115
$250 $38 $288
$1,000 $150 $1,150
$5,000 $750 $5,750

Registration threshold $60,000 taxable turnover in any 12-month period.

Worked examples

Add GST to $100

$100 × 1.15 = $115 GST-inclusive, of which $15 is GST.

Remove GST from $230

GST = $230 × 3 ÷ 23 = $30; the GST-exclusive price is $200.

GST filing frequency

Frequency Who it's for Return due
Monthly Mandatory if turnover > $24M; optional otherwise 28th of the next month
2-monthly Default for most businesses 28th after period end
6-monthly Available if turnover ≤ $500,000 28th after period end

Two exceptions to the 28th rule: a November period-end is due 15 January, and a March period-end is due 7 May.

Frequently asked questions

What is the NZ GST rate?

New Zealand GST is 15%. It applies to most goods and services. Some items are zero-rated (e.g. exported goods, certain financial services) and some are exempt (e.g. residential rent, financial services). See IRD GST guidance.

When do I need to register for GST?

You must register when your taxable supplies exceed $60,000 in any 12-month period — looking back OR reasonably projected forward. Registration is required within 21 days of crossing the threshold. See IRD GST registration.

What about a one-off large sale?

IRD excludes genuine one-off, non-recurring sales (like selling a piece of business equipment) from the $60,000 threshold test. The Registration check tab handles this — enter the one-off amount in the optional field.

How often do I file a GST return?

Three options: monthly (mandatory if turnover > $24M), 2-monthly (default for most businesses), or 6-monthly (available if turnover ≤ $500,000). Pick based on cashflow and admin preference.

Invoice basis vs payments basis — what's the difference?

Invoice basis accounts for GST when you issue or receive an invoice. Payments basis accounts for GST when cash changes hands (available if turnover ≤ $2M). Hybrid: sales on invoice, purchases on payment.

When is my GST return due?

The 28th of the month after the period ends, with two exceptions: a November period-end is due 15 January, and a March period-end is due 7 May. See IRD GST filing and paying.

Is voluntary registration worth it below $60,000?

Yes if you have significant GST on business purchases to claim back, your customers are GST-registered, or you export (zero-rated supplies still let you reclaim input GST). Note: you must stay registered for at least 2 years.

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Sources

GST information from Inland Revenue (IRD) — GST.

Last updated April 2026. Rates and thresholds sourced from Inland Revenue (IRD).

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