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You can update 3 name types with us:

  • legal name and title
  • preferred name and title
  • trade name.

 

Before you start

You'll need to attach supporting documents confirming your name change, such as:

  • Marriage certificate
  • Birth certificate
  • Change of Name certificate.

Make sure you have a digital copy of your documents before you request a change to your legal name.

Select the 'I want to tab...' in myIR

Go down to 'My details' and select 'Manage names and addresses'

Select the ‘Names’ tab

Select the name you want to update next to 'Legal name'

Select 'Change this name' and type the name you want to update

Add your supporting documents and submit the request to us

If you are only changing your title to Miss, Mrs, Ms, Mx, Mr or Master you do not need to provide any supporting documents.

If you want to use any other titles, you’ll need to send us a message with supporting documents.

Log in to myIR

Select the 'I want to...' tab in myIR

Go down to 'My details' and select 'Manage names and addresses'

Select the ‘Names’ tab

Select 'Add name' next to the type of name you want to update

Log in to myIR

If you want to use a paper form, download our Change of details form - IR238. Fill it in and send it to us at:

Inland Revenue
PO Box 39010
Wellington Mail Centre
Lower Hutt 5045
New Zealand

What happens next

We’ll review your request and let you know whether the change has been made or if we need further information.

Your responsibilities

It's important you keep your contact, income type and bank account details updated.

If you're a Working for Families or child support customer you'll also need to tell us about changes to your family situation or income.

Last updated: 21 May 2026
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