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).
- Income declaration form - for financial years starting from 2009-2010
- Income declaration form - for financial years up to and including 2008-2009
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: 1 February 2021
This information was printed 7 December 2021 from https://www.servicesaustralia.gov.au/individuals/forms/cs1668. It may not include all of the relevant information on this topic. Please consider any relevant site notices at https://www.servicesaustralia.gov.au/individuals/site-notices when using this material.