Objecting to a Child Support decision form (CS1893)
Use this form to object to a child support decision we made that you disagree with.
Your objection must be submitted with us within 28 days from when you received the decision letter. If you live outside Australia in a reciprocating jurisdiction, you have 90 days to submit your objection.
You need to include details of the decision that you are objecting to and evidence to support of your objection.