Most useful information for separated parents

The pages voted most useful by other website visitors.

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  1. Child support assessment
  2. What you need to know

What ends a child support assessment

There are a number of reasons why a child support assessment will end.

  1. Separated parents
  2. Most useful information

Application to add a child to an existing child support assessment form (CS065)

Use this form to add new children to an existing child support case.

  1. Raising kids
  2. Separated parents

Help when you’re deciding to separate

Separating can impact your finances, family, and other areas in your life.

  1. Separated parents
  2. Most useful information

Application to change your assessment - special circumstances form (CS1970)

Use this form to apply for a review of an active child support assessment due to your special circumstances.

  1. Child support assessment
  2. What you need to know

Non-parent carer applying for child support

If you provide care for a child and aren’t the parent, you may be able to receive child support from both parents. You must apply for a child support assessment.

  1. Child support assessment
  2. How to manage your assessment

Changing your child support assessment in special circumstances

We can change your child support in special circumstances if the change is fair to both parents and the child.

  1. Help for myGov, online accounts and mobile apps
  2. Child Support online help guides

Child Support online account help - Extend child support for child turning 18

Instructions on how to extend child support for a child turning 18 using your Child Support online account.

  1. Child support assessment
  2. What you need to know

Child support assessment period

A child support period is the amount of time an assessment covers. It can be up to 15 months.

  1. Child support assessment
  2. How we work out your assessment

The child support assessment formula

The child support assessment formula looks at your circumstances to work out how much child support should be paid.

  1. Child support assessment
  2. How we work out your assessment

How your percentage of care affects your child support payments

We consider each parent or non-parent carer’s care of the child as part of our child support assessment. This is their percentage of care.

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Page last updated: 17 November 2025.
QC 60125