New Zealand GST Calculator

Amount $
GST
Action
Subtotal: $0.00
GST Amount: $0.00
Grand Total: $0.00
Our GST calculator covers:
  • 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

GST Due Dates

You can choose whether to submit and pay GST monthly, two-monthly or six-monthly - it depends on your business size and personal situation - see the IRD website for more details. Paying two-monthly is the most popular method in New Zealand. 

Due dates for two-monthly GST submissions:
  • 28 January: GST returns and payments due for the taxable period ending the prior December
  • 28 March: GST returns and payments due for the taxable period ending February
  • 28 May: GST returns and payments due for the taxable period ending April
  • 28 July: GST returns and payments due for the taxable period ending June
  • 28 September: GST returns and payments due for the taxable period ending August
  • 28 November: GST returns and payments due for the taxable period ending October