The due dates of the provisional tax payments depend on which option you use and if you’re GST registered. If you use the standard or estimation option, you’ll generally pay 3 instalments of provisional tax., which are 28 August, 15 January, and 7 May. If you use accounting income method, your due dates for paying and filing your statement of activity will line up with your GST due dates. If you use the ratio option you’ll pay your provisional tax in 6 instalments, once every two months. If you pay late, underpay or fail to pay the provisional tax, you will be charged for fines and interest.
For details of provisional tax, see IR316.
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