Use this NZ GST calculator to add 15% GST to a price, remove GST from an inclusive amount, and estimate net GST payable on a return.
Either adds 15% GST to a net figure or extracts GST from a GST-inclusive total. GST applies to most taxable supplies of goods and services. Registration is generally required when turnover exceeds $60,000 per year.
Use the live tool above to enter your figures, compare outcomes, and sense-check the result before you rely on it for planning. This page is built for business owners, bookkeepers, contractors, and service providers working with GST-inclusive and GST-exclusive pricing.
Check the official IRD guidance for the latest published rules, thresholds, timing, and definitions that apply to GST.
This calculator provides estimates only and does not replace official IRD calculations.
The GST tool extracts the GST portion from a GST-inclusive amount.
It compares output GST on sales with input GST on purchases to estimate net GST payable.
Use the live tool above, enter the amounts that match your situation, and review the estimate together with the official guidance linked on this page.
No. This calculator or guide provides estimates and general information only, so you should still confirm the final position with official IRD guidance or professional advice where needed.
Use the official guidance linked on this page to check the published rules, thresholds, filing expectations, and definitions that apply to GST.