myIR, payments and more
The fifth instalment of your provisional tax is due on 28 February if you have a March balance date and use the ratio option to calculate your provisional tax payments.
If you think you have something to pay but aren't sure, you can call us on 0800 377 774 (or 0800 443 773 if you are a large enterprise).
GST returns and payment
Your GST return and payment are due for the taxable period ending January.