NZ GST Calculator
Add 15% GST to a net price, or work backwards from a GST-inclusive total, for New Zealand. Free and instant.
Presets show each country’s standard rate. Most countries also have reduced or zero rates for specific goods (food, books, medicine); enter those with the custom rate box. Rates change by law, so confirm the current rate for your category before invoicing.
How GST works in New Zealand
The standard rate is 15%. Adding GST means multiplying the net price by 1.15. Removing it is the step people get wrong: you divide the gross by 1.15, you do not subtract 15%. Taking 15% off a GST-inclusive total leaves you short, because the 15% was charged on the smaller net figure, not on the total.
Adding 15% GST
| Net amount | GST at 15% | Gross amount |
|---|---|---|
| 100 | 15 | 115 |
| 250 | 37.50 | 287.50 |
| 500 | 75 | 575 |
| 1,000 | 150 | 1,150 |
| 2,500 | 375 | 2,875 |
| 5,000 | 750 | 5,750 |
| 10,000 | 1,500 | 11,500 |
Removing 15% GST from a gross amount
Use this direction when you have a receipt or an inclusive price and need the net figure for your books:
| Gross amount | Net amount | GST included |
|---|---|---|
| 100 | 86.96 | 13.04 |
| 250 | 217.39 | 32.61 |
| 500 | 434.78 | 65.22 |
| 1,000 | 869.57 | 130.43 |
| 2,500 | 2,173.91 | 326.09 |
| 5,000 | 4,347.83 | 652.17 |
| 10,000 | 8,695.65 | 1,304.35 |
Reduced and zero rates
Not everything is charged at 15%. In New Zealand the reduced and zero rates cover very few: New Zealand deliberately runs an almost exception-free GST, with zero rating mainly for exports. The calculator above accepts any rate, so switch to a custom rate when you are invoicing something outside the standard band.
Registering and charging
Registration is compulsory above NZ$60,000 of turnover in a 12-month period. Until you are registered you must not charge GST, and once you are, your invoices need your registration number, the rate applied and the GST amount shown separately. Keep the arithmetic on the invoice consistent with your filings: rounding each line differently is a common source of small mismatches.
GST in other countries
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Frequently asked questions
What is the GST rate in New Zealand?
The standard rate is 15%. Reduced or zero rates apply to very few: New Zealand deliberately runs an almost exception-free GST, with zero rating mainly for exports.
How do I add 15% GST to a price?
Multiply the net price by 1.15. For example 1,000 net becomes 1,150 gross, of which 150 is GST.
How do I remove 15% GST from a total?
Divide the gross amount by 1.15. A 1,000 inclusive total is 869.57 net plus 130.43 of GST. Subtracting 15% from the total gives the wrong answer.
Is this NZ GST calculator free?
Yes. It runs entirely in your browser, there is no sign-up, and nothing you type is sent anywhere.