
Key Tax Info at a Glance
Your quick reference for current income tax rates and important GST and income tax payment dates for 2025–2026. Stay on top of what’s due and when.
Upcoming INC & GST Payment Dates

28 JUN
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Provisional tax (March balance date, ratio option)
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GST return & payment for period ending 31 May
28 JUL
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GST return & payment for period ending 30 June
28 AUG
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GST return & payment for period ending 31 July
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Provisional tax (March balance date – standard, estimation, or ratio)
29 SEP
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GST return & payment for period ending 31 August
28 OCT
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GST return & payment for period ending 30 September
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Provisional tax (March balance date, ratio option)
28 NOV
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GST return & payment for period ending 31 October
15 JAN
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GST return & payment for period ending 30 November
28 JAN
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GST return & payment for period ending 31 December
9 FEB
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End-of-year tax & Working for Families bills due (no extension)
2 MAR
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GST return & payment for period ending 31 January
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Provisional tax
30 MAR
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GST return & payment for period ending February
7 APR
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End-of-year tax & Working for Families bills due (with extension)
7 MAY
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GST return & payment for period ending 31 March
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Provisional tax
28 MAY
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GST return & payment for period ending 30 April