New Zealand GST Calculator

1. 01Choose a modeAdd GST starts from a net price. Remove GST starts from a gross, GST-inclusive price. GST amount shows the tax on a net price.
2. 02Enter the amount and rateType the amount. The rate is set to the 15% New Zealand rate; change it only for a zero-rated supply.
3. 03Read net, GST, and grossAll three figures appear together, so you can copy the net, the GST, or the gross price.

• Add 15% GSTA net price of 100 NZD becomes 100 × 1.15 = 115 NZD, with 15 NZD of GST.
• Remove GST from a priceA gross price of 115 NZD contains 115 ÷ 1.15 = 100 NZD net, so the GST is 15 NZD.
• GST amount onlyOn a net price of 200 NZD, the GST is 200 × 0.15 = 30 NZD.

GST is 15%, in place since 1 October 2010. To add GST, multiply the net amount by 1.15. To take GST out of a gross amount, divide by 1.15 to get the net, then subtract to get the GST. Exports and some supplies are zero-rated; for those, set the rate to 0, since this tool applies a single 15% rate.

The 15% rate is set by Inland Revenue (ird.govt.nz). Last checked 6 July 2026. This tool is an educational estimate and is not affiliated with, endorsed by, or approved by Inland Revenue or any government body. It covers the standard rate only, not zero-rated or special supplies. Rates and rules can change. For a business or tax decision, check the official source or a qualified tax professional.

What is the GST rate in New Zealand?

GST is a flat 15% on most goods and services, in place since 1 October 2010, administered by Inland Revenue.

How do I add 15% GST to a price?

Multiply the net price by 1.15. For example, 100 NZD becomes 115 NZD, with 15 NZD of GST.

How do I remove GST from a gross price?

Divide the gross price by 1.15 to get the net price, then subtract to get the GST. For 115 NZD, the net is 100 NZD and the GST is 15 NZD.

Are exports charged GST?

Exports are usually zero-rated (0%). This tool applies one rate, so set the rate to 0 for a zero-rated supply and check the Inland Revenue rules.

Is this official tax advice?

No. It is an educational estimate and is not affiliated with Inland Revenue. For a business or tax decision, use the official source or a qualified professional.

Is my data stored?

No. The calculation runs in your browser. Nothing you enter is uploaded, saved, or shared.