Income declaration form (CS1668)

Use this form to provide an income declaration if your taxable income has not yet been assessed by the Australian Taxation Office (ATO).

You must download our forms to fill them in. We have help available if you use assistive technology or if you need a translator or interpreter. Find out how to use our forms.

Use the form that relates to the financial year you are declaring your income for.

We use your adjusted taxable income to calculate your child support assessment.

If your Child Support online account is linked to myGov, sign in now to complete the form.

Sign in to myGov

Page last updated: 7 November 2023.
QC 19641