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Te puka tāke moni whiwhi takitahi - IR3 Individual income tax return - IR3

Income tax
Income tax
  • Income tax for individuals
    • What happens at the end of the tax year
      • Timelines at the end of the tax year
      • When we work out your tax for you: income tax assessments
      • Individual income tax return - IR3
        • Complete my individual income tax return - IR3
        • Fix mistakes in my individual income tax return - IR3
      • Completing an income tax assessment in myIR

Income tax Dates

  • MAR 28
    AIM instalments are due if you file GST monthly and have a March balance date.
  • MAR 31
    Final date for ratio option provisional tax applications.
  • APR 7
    End-of-year income tax and Working for Families bills are due if you have an extension of time to file your income tax return.

At the end of the tax year, you may need to file an Individual income tax return – IR3, which:

  • tells us about your income for the year and the expenses you’re claiming
  • calculates if you’re due a refund or have tax to pay.

The tax year is from 1 April to 31 March.

IR3 returns are different from income tax assessments where we work out your tax for you, even if we ask you for more information.

When we work out your tax for you: income tax assessments

Who needs to complete an income tax return

You need to complete an individual income tax return at the end of the tax year if you received more than $200 (before tax) in income that we have not been told about, even if this was only for part of the tax year.

Here’s the full list of reasons we may ask you to file an individual income tax return – IR3.

I’ve been asked to complete an individual income tax return – IR3

Different return for non-residents

If you are not a New Zealand tax resident, you'll need to file an IR3NR instead.

Complete my non-resident individual tax return - IR3NR 

Not sure if you need to complete a return?

If you think you do not need to complete an IR3, contact us to discuss your situation.

Income tax - contact us

Completing your return

We'll let you know when it's time to complete your return for this year. We’ll either send you an email notification that your return is ready to complete in myIR or a paper return in the post.

Your return will usually be processed faster if you complete it in myIR.

Complete my individual income tax return - IR3

When your return is due

You need to send us your completed return by 7 July unless you have a tax agent or an extension of time.

Getting more time to file your return

You can apply for an extension of time (EOT) to file your income tax return later than the normal due date. If granted, an extension of time allows you to spread return filing throughout the year. Individuals, trusts or companies can all apply for an extension of time.

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After you file

We’ll send you a notice of assessment to confirm we've got your return. It will show any refund you may be due or tax you need to pay.

If you realised you've made mistakes in your return, please let us know as soon as possible.

Fix mistakes in my individual income tax return - IR3

You also need to let us know when you’ve got a new type of income or when you’ve stopped getting an existing type. The easiest way to do this is through myIR, but you can also call us.

Update my income type

Change your investment income allocation from joint accounts 


Pages in this section
  • Complete my individual income tax return - IR3 How to complete your individual income tax return - IR3.
  • Fix mistakes in my individual income tax return - IR3

    How to fix a mistake in your individual tax return.

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