The Change of Assessment (COA) WIZARD

This COA WIZARD has been designed to yield positive results for both the Paying or Receiving Parent. If you answer and complete the application honestly and accurately, the same results should apply to you.

This COA WIZARD is for PAYG Parents (not self-employed) ONLY. It is not to be used if:

  • You want to update the Child Support Agency of a change in YOUR income (Lodge an Estimate of income form).
  • A Change of Assessment decision is currently in force (please contact us as these can get complex).
  • Your case with the Department of Human Services, Child Support has ended.


Please seek our professional guidance by contacting 1300 782 577 for more complex Change of Assessment applications.


  1. Complete the COA WIZARD Questionairre below.
  2. By the end, you will know if this COA WIZARD is suitable for you.
  3. Enter your name, phone number and email address.
  4. Press "SUBMIT".
  5. An invoice for $110 Inc. GST per succesful "Reason" will be sent to your email address.
  6. Once the invoice is paid, the custom made COA application will be sent to your email address.

The COA WIZARD Questionairre

  • I am NOT self-employed.
  • A case is registered with the Department of Human Services, Child Support and they are collecting or receiving child support payments on my behalf.
  • A Change of Assessment decision that affects the child support liability is NOT in force.
  • My child support case has NOT ended.
  • I do not own any significant income deriving assets including, but not limited to investment properties and shares and/or I have not recently received a large payout or any other financial resource.

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