New Zealand GST Calculator & Rate
New Zealand GST calculator
GST = 100.00 × 15% = 15.00; gross = 100.00 + 15.00 = 115.00
How much is GST in New Zealand?
IRD: 'GST is charged at a rate of 15%.' Long-stay commercial accommodation is taxed on 60% of its value after 4 weeks, an effective rate of 9% (IRD PUB00511). Zero-rated supplies are charged at 0% where certain requirements are met.
New Zealand GST worked examples
| Rate | Tax share of a gross price | Net 100 → tax / gross | Net 1,000 → tax / gross | Gross 100 → tax / net | Gross 1,000 → tax / net |
|---|---|---|---|---|---|
| 15% standard | 15/115 ≈ 13.0435% | 15.00 / 115.00 | 150.00 / 1,150.00 | 13.04 / 86.96 | 130.43 / 869.57 |
About this page
Worked in whole cents: the tax is rounded to the nearest cent (half a cent goes up) and the other amount is the difference, so the boxes always add up. From a gross amount the tax is gross × rate ÷ (100 + rate); from a typed tax amount the net is worked back and your tax amount stays as typed. Your tax authority may set its own rounding rules for invoices.
Add GST: gross = net × (1 + rate ÷ 100). Extract GST: tax = gross × rate ÷ (100 + rate), and net = gross − tax.
Not tax advice. Rates were last verified on the date shown; confirm with the linked official source before invoicing.