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Tax & Pay Calculator

Free GST Due Dates Calculator for New Zealanders

GST returns and payments are due on the 28th of the month following the period, with two exceptions. Returns ending 31 March are due 7 May, and returns ending 30 November are due 15 January.

Your filing

Return + payment due
28 June
2-monthly period ending 31 May

Based on a 2-monthly return ending 31 May.

Period end31 May
Filing due date28 June
Payment due date28 June
Days after period end28 days

About our GST Due Dates Calculator

Disclaimer: This calculator is for information only and does not constitute financial advice. Real-world figures may differ due to fees, rounding, rate changes, and policy specifics. Always confirm figures with the relevant provider before signing anything.