Change my income tax assessment details

Income tax Dates

MAR 28

AIM instalments are due if you file GST monthly and have a March balance date.
APR 1

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.

All Income tax dates

You need to tell us about any missing or incorrect information on your income tax assessment.

In myIR, select 'Returns and transactions' on your income tax account

Select 'Returns'

Select 'View or amend return' under the period you want to amend

Select 'Amend return' under 'I want to...'

Log in to myIR

Other ways to do this

What happens next

We'll send you a new income tax assessment. This shows if you:

are due a refund
have tax to pay
have paid the right amount of tax during the year.

Your responsibilities

You may be asked to provide proof of changes to your income or expenses.

Make sure we have your correct contact, bank account and income information.

Manage your investment income allocation in myIR from joint accounts. As long as you have supplied your investment income provider with your IRD number you can do this in myIR.

You can update these any time during the tax year. The easiest way is in myIR.

Change your investment income allocation from joint accounts

Te huri i aku taipitopito aromatawai tāke moni whiwhi Change my income tax assessment details