GST Calculator NZ
Add 15% GST to a net price or remove GST from an inclusive total. Free, no sign-up, runs entirely in your browser.
New Zealand GST is a flat 15% on most goods and services.
Figures rounded to 2 decimals (cents). Verify treatment of zero-rated and exempt supplies against current Inland Revenue guidance.
How to add or remove GST in New Zealand
New Zealand GST is a flat 15%. To add GST to a net price, multiply by 1.15: a NZ$100 job becomes NZ$115 including GST. To remove GST from a price that already includes it, divide by 1.15: NZ$115 ÷ 1.15 = NZ$100 net, with NZ$15 of GST.
A handy cross-check: the GST component of a GST-inclusive price is exactly 3/23 of the total (because 15/115 simplifies to 3/23). On NZ$230 inclusive, the GST is NZ$30.
Most goods and services are taxed at 15%. A small set of supplies is zero-rated, such as exported goods and services, and some are exempt, such as financial services, residential rent and donated goods sold by non-profits. Businesses must register for GST once taxable turnover reaches NZ$60,000 in any 12-month period.
GST at a glance: common amounts
| Net (excluding GST) | GST at 15% | Total (including GST) |
|---|---|---|
| NZ$50.00 | NZ$7.50 | NZ$57.50 |
| NZ 00.00 | NZ 5.00 | NZ 15.00 |
| NZ$250.00 | NZ$37.50 | NZ$287.50 |
| NZ ,000.00 | NZ 50.00 | NZ ,150.00 |
| NZ$4,347.83 | NZ$652.17 | NZ$5,000.00 |
The last row shows the reverse calculation: a NZ$5,000 GST-inclusive price contains NZ$652.17 of GST (5,000 × 3 ÷ 23), leaving NZ$4,347.83 net.
Invoices and GST returns in New Zealand
Since 1 April 2023, Inland Revenue no longer requires a document headed "tax invoice". A GST-registered seller instead provides "taxable supply information", and how much detail is needed scales with the sale. For supplies over NZ ,000 that means the seller's name and GST number, the date, a description, the amount with GST shown or a statement that it is included, and the buyer's name plus an identifier such as an address or NZBN. Between NZ$200 and NZ ,000 the buyer's details can be dropped, and at NZ$200 or under no taxable supply information has to be issued at all, though both sides still need a record of the sale to support a GST claim. The information does not have to be an invoice: a receipt, contract or statement counts, as long as it is provided within 28 days of a request.
Registered businesses file a GST return monthly, two-monthly or six-monthly. Two-monthly is the default, and six-monthly filing is available while taxable supplies stay under NZ$500,000 a year. Businesses with turnover up to NZ$2 million can account on a payments basis, returning GST when money actually changes hands rather than when an invoice is issued, which eases cash flow for firms whose customers pay slowly.
Frequently asked questions
What is the GST rate in New Zealand?
New Zealand charges a single flat GST rate of 15% on most goods and services. The rate has been 15% since 1 October 2010. There are no reduced rates; a small set of supplies is zero-rated (such as exports) or exempt (such as financial services and residential rent).
How do I remove GST from an inclusive price?
Divide the GST-inclusive amount by 1.15. For NZ$115 inclusive: 115 ÷ 1.15 = NZ$100 net, so the GST component is NZ$15. Equivalently, the GST portion of an inclusive price is 3/23 of the total. This is also called a reverse GST calculation.
When do I need to register for GST in New Zealand?
You must register with Inland Revenue if your taxable turnover is NZ$60,000 or more in any 12-month period, or if you expect it to reach NZ$60,000 in the next 12 months. Below the threshold, registration is voluntary.
How do I add 15% GST to a price?
Multiply the net price by 1.15. A NZ$100 net amount becomes NZ$115 including GST, with NZ$15 of GST. To find just the GST component, multiply the net price by 0.15.
Is this GST calculator free?
Yes. It is completely free, requires no sign-up, and all calculations run locally in your browser. No data is uploaded anywhere.