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 Your Amount
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.
NZ GST Calculator
15% rate · Effective from 1 October 2010
At a Glance
Key thresholds & IRD deadlines
How GST Is Calculated
New Zealand GST is a flat 15% rate applied to most goods and services. Calculation is straightforward whether you're adding GST to a net price or extracting it from a GST-inclusive total.
Adding GST
When pricing a product or service excluding GST, multiply by 1.15 to find the GST-inclusive total.
Total = Price × 1.15
Example: NZD 100 × 1.15 = NZD 115.00
Extracting GST
When working backwards from a GST-inclusive amount, divide by 1.15 — or take 3/23 (the IRD's official tax fraction) to find the GST portion directly.
GST = Total × 3/23
Example: NZD 115 ÷ 1.15 = NZD 100.00
What Is (and Isn't) Subject to GST
Most goods and services in New Zealand are standard-rated at 15% — including basic food, which is taxed unlike in Australia. Other supplies fall into two main categories where no GST is charged: zero-rated (where input tax credits remain claimable) and exempt (where credits cannot be claimed).
Zero-Rated (0%) Supplies
- ✓Exports of goods and services
- ✓International transport services
- ✓Most B2B land transactions
- ✓Sale of a going-concern business
- ✓First sale of refined precious metals
Exempt Supplies (No Credits)
- –Long-term residential rental accommodation
- –Most financial services
- –Donated goods sold by non-profits
- –Penalty interest charges
GST Filing Cycles & Due Dates
GST-registered businesses lodge returns through myIR. The return and payment are due by the 28th of the month following the end of the taxable period. IRD assigns or approves filing frequency based on annual taxable supplies. Late payment attracts a 1% penalty the day after the due date, then an additional 4% if still unpaid after 7 days. The further 1%-per-month incremental penalty does not apply to GST. Late filing penalties range from NZD 50 to NZD 250.
| Filing Cycle | Who It Applies To | Due Date |
|---|---|---|
| Monthly | Mandatory for businesses with annual taxable supplies above NZD 24M (optional for smaller) | 28th of the following month |
| 2-Monthly | Default for businesses with annual taxable supplies between NZD 500K and NZD 24M | 28th of the month after period end |
| 6-Monthly | Available by election to businesses with annual taxable supplies under NZD 500K | 28th of the month after period end |
Standard 2-Monthly Filing Due Dates
For a calendar-aligned 2-monthly filer. The 31 March return is due 7 May, and the 30 November return is due 15 January (special holiday extensions). If a due date falls on a weekend or public holiday, the deadline shifts to the next working day.
* Mar–Apr period uses the 31 March year-end extension. Nov–Dec period uses the holiday extension to 15 January.
GST Rate History
New Zealand introduced GST on 1 October 1986 as part of the Fourth Labour Government's tax reforms (alongside large income tax cuts). The rate has changed only twice since then — making NZ's GST one of the most stable consumption tax systems in the OECD.
Frequently Asked Questions
Common questions about New Zealand GST — registration, rates, zero-rated and exempt supplies, filing deadlines, and taxable supply information — answers verified against official IRD guidance.
Important Disclaimer
For educational and informational purposes only. This calculator produces estimates based on the inputs provided and the official Inland Revenue (IRD) Goods and Services Tax (GST) settings for New Zealand. The standard GST rate is 15% and has been unchanged since 1 October 2010. The compulsory registration threshold is NZD 60,000 in taxable supplies on a rolling 12-month basis (s.51 GST Act 1985), unchanged since 1 October 2009. Filing frequencies are 1-monthly (mandatory above NZD 24M turnover), 2-monthly (default for NZD 500K – 24M), or 6-monthly (elected, under NZD 500K), with returns and payments due on the 28th of the month following the period end. Late payment attracts a 1% penalty the day after the due date and an additional 4% if unpaid after 7 days; the further 1%-per-month incremental penalty does not apply to GST. Late filing penalties range from NZD 50 to NZD 250.
No warranty of accuracy. While Money Snap takes reasonable care to source figures from official authorities (IRD, Ministry of Business, Innovation & Employment, Sorted.org.nz), this calculator is provided "as is" without any express or implied warranty as to accuracy, completeness, timeliness, or fitness for any particular purpose. GST rules, registration thresholds, filing periods and penalty rates change from time to time — figures shown may be out of date, and individual circumstances such as the long-stay accommodation reduced rate (s.10(6)), online marketplace rules for listed services from 1 April 2024, mixed supplies, change-in-use adjustments, the going-concern rules, or international transactions not captured by the inputs may materially affect actual GST obligations.
Not financial or tax advice. Information provided is general in nature only and does not take into account your business circumstances, structure, or industry. Results do not constitute financial, tax, or legal advice and use of this calculator does not create an advisory relationship. Before relying on any figure shown, obtain personalised advice from a chartered accountant or tax agent, or seek formal guidance directly from IRD.
Limitation of liability. To the maximum extent permitted by law, Money Snap accepts no liability for any loss, damage, cost, or expense — direct or indirect — arising from reliance on this calculator or the information it produces. Users are responsible for verifying all figures with the relevant authority before relying on them. Use of this calculator is subject to our Terms of Use.
Enjoying Money Snap?
This calculator is 100% free to use. Get started now or share it with friends who might find it helpful!