Fix mistakes in my individual income tax return

Income tax Dates

JAN 15

AIM instalments are due if you have a March balance date.
JAN 15

Provisional tax payments are due if you have a March balance date and use the standard, estimation or ratio options.
JAN 28

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

All Income tax dates

Follow these steps to fix a mistake in an IR3 return you've already filed.

In myIR, select your return

Select the 'Returns' tab then 'View or amend return' next to the return you want to change.

Select 'Amend return'

This is under ‘I want to’ on the right side of the page. You’ll then see details of the return you originally filed.

Fix the mistake

Go through your return. Amend the return to show the right details, tell us why you amended it, then resubmit your return.

Log in to myIR

Other ways to do this

You can call us and ask us to fix your mistake.

What happens next

We process your corrected return and send you a notice of assessment showing any refund you are due or tax to pay. We send the assessment to you within 10 weeks.

Your responsibilities

You need to keep these records and provide them if we request them:

the return period the mistake occurred in
the amount involved
the nature of the mistake
the return period the correction was made.

Keep a copy of all returns that you send to us. This will help if you need to make changes to a return and support what you have done.

Te whakatika hapa i taku puka tāke takitahi Fix mistakes in my individual income tax return - IR3

Income tax Dates

In myIR, select your return

Select 'Amend return'

Fix the mistake

Log in to myIR

What happens next

Your responsibilities

Topics

Situations

Roles

Fix mistakes in my individual income tax return - IR3