GST Calculator for NZ Goods and Services Tax
Updated 6 July 2025
| Amount $ | |
|---|---|
| GST | |
| Action |
| Subtotal: | $0.00 |
|---|---|
| GST Amount: | $0.00 |
| Grand Total: | $0.00 |
Our GST calculator covers:
Related resources: GST Due Dates, PAYE Calculator and Chasing Slow Debtors
- How to calculate GST from a total
- How to work out a GST exclusive amount
- How to calculate GST for GST returns in NZ
- How to determine the amount before GST
- How to calculate margins with GST
- How to calculate the tax inclusive amount
- How to calculate NZ GST
Related resources: GST Due Dates, PAYE Calculator and Chasing Slow Debtors
GST Due Dates
Our guide to GST Due Dates explains more. For businesses with a March 31 balance day, the following applies:
March 31 Balance Date – Two Monthly GST
March 31 Balance Date – Six Monthly GST
March 31 Balance Date – Two Monthly GST
- June 28: April/May GST Return & Payment Due
- 28 August: June/July GST Return & Payment Due & 1st Provisional Tax Instalment Due
- October 28: August/September GST Return & Payment Due
- 15 January: October/November GST Return & Payment Due & 2nd Provisional Tax Instalment Due
- February 28: December/January GST Return & Payment Due
- April 7: Terminal Tax Due
- 7 May: February/March GST Return & Payment Due & 3rd Provisional Tax Instalment Due
March 31 Balance Date – Six Monthly GST
- 28 October: April/September GST Return & Payment Due & 1st Provisional Tax Instalment Due
- 7 May: October/March GST Return & Payment Due & 2nd Provisional Tax Instalment Due
