🧾 NZ GST Calculator (Add or Remove 15%)

Add or remove 15% GST instantly.

No ratings yet — be the first

Enter details

Log in or create a free account to save your inputs and results, so you don't have to enter them again next time.🔒 No spam, ever. We never sell or share your details, and you can delete your history or account at any time. Privacy policy

Fill in the details and click Calculate to see your results.

Formula at a glance

NZ GST Calculator: Add GST — price × 1.15. Example: GST in $115 → GST: $15.00
How the NZ GST Calculator works: Add GST — price × 1.15

📱 Also in our Android apps

This calculator is in each of these free apps. Sign in with the same account to keep your history in sync.

  • Financial CalculatorEMI, SIP, PPF, NPS, post office schemes and government-employee calculatorsGet it on Google Play
  • Govt Employee CalculatorSalary, DA, pension and income tax for government employeesGet it on Google Play

Rate this calculator

Was it useful? A quick star rating helps others — and you can leave a comment too.
Rate it: ★ ★ ★ ★ ★

📘 About the NZ GST Calculator

New Zealand GST is 15% on most goods and services. To add it, multiply by 1.15. To find the GST inside an inclusive price, multiply by 3 and divide by 23 (or divide by 7.6667).

Businesses must register for GST once turnover reaches $60,000 in 12 months.

🧮 Formula

Add GST
price × 1.15
GST included
price × 3 ÷ 23

✏️ Worked examples

GST in $115

You enter
Amount115 $
I want toFind GST in a GST-inclusive amount
You get
GST$15.00
Price excluding GST$100.00
Price including GST$115.00
Quick ruleGST in a GST-inclusive price = price × 3 ÷ 23

$15.00.

Add GST to $2,000

You enter
Amount2,000 $
I want toAdd GST
You get
GST$300.00
Price excluding GST$2,000.00
Price including GST$2,300.00
Quick ruleGST in a GST-inclusive price = price × 3 ÷ 23

Total $2,300.00.

🧭 How to use this calculator

What you enter

  • Amount ($)
  • I want to

What you get

  • GST
  • Price excluding GST
  • Price including GST
  • Quick rule

❓ Frequently asked questions

How do I calculate GST in NZ?

Multiply a GST-exclusive amount by 0.15, or a GST-inclusive amount by 3/23.

What is the GST registration threshold in NZ?

$60,000 of turnover in any 12-month period.

Is GST charged on rent?

Residential rent is GST-exempt; commercial rent usually includes GST.

Is GST 15% on everything?

Most supplies; financial services and residential rent are exempt, and exports are zero-rated.