If your income has dropped by at least 15%, follow these steps to estimate your new income and change your child support amount.
Find out if you meet the requirements to estimate your income.
Before you start
You'll need:
- your total income for the year so far (since 1 April), including any overseas income
- what you think your income will be for the rest of the year (until 31 March).
Go to your child support panel in myIR
Select 'Apply for a child support income estimation'
Fill in your details
Submit your estimation
Log in to myIR
You can fill out the Estimate of income for child support assessment – IR104 form online or on paper.
Check you've included the right information and any documents we need. Sign the form and send your documents to us at:
Child Support
PO Box 39010
Wellington Mail Centre
Lower Hutt 5045
What happens next
If we accept your estimate, we'll reassess your child support and send you a new notice.
We may ask you for evidence to support your estimate. These could be payslips or a letter from your accountant or tax agent, for example.
If your estimate includes overseas income, you'll need to send us proof of the actual income you earned after the end of the New Zealand tax year (1 April to 31 March).
If we cannot accept your estimate, we'll send you a letter explaining why.
At the end of the tax year
After the end of the tax year 31 March, we'll compare the income you estimated with what you actually earned. If necessary, we'll reassess your child support.
My responsibilities
Keep track of your income. If it changes again during the year, contact us to talk about your situation. To avoid a bill, you may need to estimate again or even cancel your estimation.
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