New Zealand GST Calculator
New Zealand's GST rate is a flat 15% on most goods and services. This calculator lets you add GST to a net price or extract the GST from a GST-inclusive total.
Educational estimate. Calculator results are for planning and information only, not financial, tax, medical, legal, or engineering advice. Verify important decisions with official sources or a qualified professional.
New Zealand GST Calculator
Add or Remove 15% GST Instantly
📐 Formula & Method
Add GST
Multiply the net (ex-GST) price by 1.15 to get the GST-inclusive price.
Remove GST
Divide the GST-inclusive price by 1.15 to get the ex-GST amount.
📋 How to Use
-
1
Enter the amount.
-
2
Select whether to add or remove GST.
-
3
See ex-GST, GST amount, and GST-inclusive total.
New Zealand GST — The Basics
NZ GST (Goods and Services Tax) is 15% and applies to nearly all goods and services sold in New Zealand. Unlike many countries, NZ has very few GST exemptions — most food, financial services, and residential rent are exempt, but essentials like groceries are generally GST-inclusive.
Businesses registered for GST (turnover above $60,000/year) must charge GST on sales and can claim back GST on business purchases. GST returns are filed with IRD either monthly, two-monthly, or six-monthly.
🔬 Methodology & Accuracy
Formula: Uses the standard mathematical formula shown in the Formula & Method section above. All computations run client-side in your browser — no data is sent to our servers.
Data sources: Tax bands, contribution limits and regulatory rates are taken from official US (IRS, SSA) and UK (HMRC, gov.uk) publications for the current tax year, and updated when bands change.
Last reviewed: July 2024 · Accuracy: Results are precise to two decimal places using IEEE-754 double-precision arithmetic. Intended for educational and planning use only.
For informational purposes only. Results are estimates based on the inputs and formulas provided. For financial, tax, medical, or legal decisions, consult a qualified professional. Rates and regulations change — always verify current figures with official sources.