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).

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.

Complete the form online using your Child Support online account through myGov. Read about how to register for a Child Support online account.

This PDF is fillable. You can fill it out on your device, or print it and complete it by hand.

If you have a disability or impairment and use assistive technology, you may not be able to access our forms. If you can’t, please use self service, request someone to deal with us on your behalf, or contact us. We can help you access, complete and submit them.

Page last updated: 21 December 2021