New Zealand GST calculator (15%)
Add GST at the standard 15% rate to a net price, or work out the GST already included in a GST-inclusive total — in NZD. The calculator below is free, needs no sign-up, and runs entirely in your browser.
Rates are pre-filled for convenience but always editable. Verify the current rate with your country's tax authority. Calculator results are estimates only, not professional advice.
New Zealand GST rates
| Rate | Band | Multiply net by |
|---|---|---|
| 15% | Standard rate | 1.15 |
| 0% | Zero-rated supplies | 1 |
The rate field in the calculator is editable — type any of these. Which band applies depends on the goods or service; confirm with the New Zealand tax authority.
Worked examples at 15%
| Amount (NZD) | Excluding GST: + GST = | Including GST: net |
|---|---|---|
| 100 | 115.00 | 86.96 |
| 1,000 | 1,150.00 | 869.57 |
| 10,500 | 12,075.00 | 9,130.43 |
Read a row as: NZD 10,500 excluding GST is NZD 12,075.00 with it; the same figure including GST is NZD 9,130.43 before it.
How New Zealand GST is calculated
Adding GST: multiply the net price by 1.15. A NZD 100 item becomes NZD 115.00 once 15% GST is added.
Removing GST: divide the GST-inclusive total by 1.15. From NZD 115.00 inclusive, the net is NZD 100 and the GST portion is NZD 15.00.
The standard rate is 15%, but reduced or zero rates can apply to particular goods and services. For anything you file or charge, confirm the current rate and rules with the relevant New Zealand tax authority.
New Zealand GST FAQ
- How much is GST in New Zealand?
- The standard GST rate in New Zealand is 15%. The other rates in use are 0% (zero-rated supplies). Which rate applies depends on the goods or service.
- How do I add GST to a price in New Zealand?
- Multiply the net amount by 1.15. For example, NZD 100 plus 15% GST is NZD 115.00.
- What fraction of a GST-inclusive price is GST?
- 3/23 of a GST-inclusive price is GST at 15% — for example NZD 115.00 inclusive contains NZD 15.00 of GST. Multiply the inclusive price by 3/23 to get the GST in one step.
- How do I work out the GST included in a price?
- Divide the GST-inclusive total by 1.15 to get the net amount; the difference is the GST. For NZD 115.00 inclusive, the net is NZD 100 and the GST is NZD 15.00.
- Is the New Zealand GST calculator free?
- Yes. The New Zealand GST calculator is free and runs entirely in your browser — no sign-up, nothing uploaded.