New Zealand GST Calculator
Calculate Kiwi Good & Service Tax (15%) instantly. Easily add or remove GST from any NZD amount with our high-precision tool.
Select Your Mode
Choose between "Add GST to Net" for creating quotes or "Extract GST from Total" to help reconcile receipts and expenses.
Enter Income
Input your NZD dollar amount. The calculator processes your input in real-time, displaying a breakdown of the net and tax components as you type.
See Breakdown
Switch the GST toggle ON (15%) for standard taxable items or OFF (0%) for GST-free food and residential rent to see your calculated totals.
GST Calculator
New Zealand Goods and Services Tax at 15%
At a Glance
Since 1 October 2010
NZD per year (taxable supplies)
Monthly or 6-monthly also available
Reduced rate: stays over 4 weeks
Amount Breakdown
How GST Is Calculated
New Zealand GST is a flat-rate value-added tax applied at each stage of the supply chain. The current rate of 15% has been in effect since 1 October 2010. Unlike income tax, GST is the same rate regardless of the transaction amount — making calculation straightforward.
GST Amount = Price × 0.15
Total = Price × 1.15
Example: $100 × 1.15 = $115.00
Base Price = Total ÷ 1.15
GST Amount = Total − Base
Example: $115 ÷ 1.15 = $100.00
What Is (and Isn't) Subject to GST
Zero-Rated (0%) Supplies
- ✓ Exports of goods & services
- ✓ International transport services
- ✓ Most land transactions (some conditions apply)
- ✓ Some fine/precious metals
- ✓ Going-concern business sales
GST Exempt Supplies
- – Residential rental accommodation
- – Most financial services
- – Charitable / non-profit donations
- – Some precious metal transactions
Note: Unlike Australia, New Zealand does not have a broad GST exemption for basic food. Almost all food sold in NZ is subject to 15% GST.
GST Filing Deadlines
GST returns are due on the 28th of the month following the end of the taxable period. Late filing incurs penalties starting at 1% of the unpaid tax immediately, with an additional 4% added if still unpaid after 7 days. IRD assigns your filing frequency based on annual taxable supplies.
| Filing Frequency | Who It Applies To | Due Date | Example |
|---|---|---|---|
| 1-monthly | Annual taxable supplies > NZ$24 million | 28th of the following month | Jan return due 28 Feb |
| 2-monthly | Annual taxable supplies NZ$500K–$24M (standard) | 28th of the month after period end | Jan–Feb return due 28 Mar |
| 6-monthly | Annual taxable supplies < NZ$500,000 (elected) | 28th of the month after period end | Jan–Jun return due 28 Jul |
Key 2025/2026 Due Dates (2-Monthly)
* If the due date falls on a weekend or public holiday, the return is due the next working day. Always confirm your specific due date with IRD or your tax agent.
GST Rate History
New Zealand introduced GST on 1 October 1986 as part of a major tax reform that also reduced income tax rates. It has only changed twice since introduction, making NZ's GST system one of the most stable in the world.
Why has the rate stayed at 15%? The 2010 increase was part of a revenue-neutral "tax switch" — GST was raised while income tax rates were cut. Since then, no government has proposed a further increase, and the broad-base, low-rate philosophy underpinning NZ's GST has remained politically stable across both major parties.
For educational purposes only. This calculator is designed to help you understand how New Zealand GST works. Results are estimates based on the inputs you provide and may not reflect your actual GST liability.
This tool does not constitute financial or tax advice. Your individual GST situation may differ due to specific exemptions, zero-rated supplies, or rulings that apply to you. Always consult a registered tax agent or accountant for personalised advice.
All GST rates and thresholds are sourced from Inland Revenue (IRD) New Zealand and are verified as of March 2026. The standard GST rate of 15% has been in effect since 1 October 2010. Rates are subject to change — always verify current rates directly with IRD.
Frequently Asked Questions
Everything you need to know about Good & Service tax in New Zealand.
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