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NZ GST calculator

Calculate New Zealand 15% GST on net prices or reverse-calculate GST using the Inland Revenue 3/23rds rule for GST returns.

In your browser

$
15.0% Standard New Zealand GST (Inland Revenue)
Uniform across all of New Zealand
Quick amounts:
NZD
GST Portion (15%)

Pre-GST Net Price

Exclusive of GST
GST Amount (15%)

Inland Revenue (IRD) GST return
Gross Invoice Total

Total GST-inclusive amount
IRD 3/23rds Rule: Because New Zealand GST is 15%, a GST-inclusive price represents 115% of the base amount. To extract the GST component from any gross price, multiply by 3 and divide by 23 (15/115 = 3/23). For example, a $230 invoice includes exactly $30 of GST ($230 × 3/23 = $30).

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Popular uses

NZ GST 3/23rds calculator

About this tool

Add or remove Goods and Services Tax (GST) in New Zealand at the standard 15% rate. Easily find the GST-exclusive amount, GST content, and GST-inclusive total, or reverse GST using the IRD 3/23rds formula.

How to use it

  1. 1 Enter the dollar amount you want to calculate.
  2. 2 Choose "Add GST (+15%)" to find total price or "Remove GST (-15%)" to extract GST from a gross amount.
  3. 3 View the base amount, GST portion, and final total instantly.

Questions

What is the current GST rate in New Zealand?

The standard GST rate in New Zealand is 15% on most goods and services.

How do I remove GST from a price in New Zealand?

To find the GST component of a GST-inclusive price, multiply the total by 3 and divide by 23 (or multiply by 3/23 = ~13.0435%).

Is my data uploaded?

No. This tool runs in your browser, so your text and files never reach our server.

Is this tool free?

Yes. It’s free to use with no sign-up and no limits for normal use.

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