Change of circumstances that affect your child support

It is important you tell us if your circumstances change as soon as possible to make sure your details and child support are accurate.

Changes you need to tell us about include:

  • your contact details
    • postal address
    • telephone numbers
    • email address if you have one
  • your bank account details
    • bank account name
    • bank account number
    • BSB number
  • your income
    • you get a job and your assessment is based on an estimate of income
    • you lose your job (an estimate of income may be an option)
    • you change jobs and your income changes for the remainder of the financial year
    • your current income increases or decreases and your assessment is based on an estimate of income

Changes to your children's circumstances while receiving child support

You also need to tell us if your children's details change to make sure your details and assessment are accurate. You need to tell us if:

  • your child is turning 18 and is still at secondary school
  • you and the other parent decide to get back together
  • the amount of care you have of your child changes
  • you have a child with another partner
  • your child becomes legally adopted
  • you and the other parent have another child together and want this child included in your child support assessment
  • your child marries or starts to live in a de facto or marriage like relationship
  • a parent or child included in the child support assessment dies

Your child is turning 18 and is still at school

If your child is about to turn 18 and in full-time secondary school, you can ask us to continue the child support assessment to the end of the school year. You need to apply before the child's 18th birthday.

If you receive Family Tax Benefit Part A your family payment will be affected if you choose not to apply for your child support to be extended. If you do not seek an extension of your child support past the child’s 18th birthday you will only receive the base rate of Family Tax Benefit Part A for the child.

We will remind you to apply for your child support to be extended before the child's 18th birthday. If you do not apply before your child’s 18th birthday contact us immediately. There are very limited exceptional circumstances where we can accept an application after your child’s 18th birthday.

You can either apply on Child Support online accounts, by calling 131 272, or by completing a Child over 18 in full-time secondary education form.

You and the other parent get back together when you have a child support assessment

If you and the other parent decide to get back together we can suspend child support arrangements for 6 months.

If 1 of you has another child support assessment with someone else, the children who are living with you will be treated as relevant dependent children in that assessment.

If you separate again

If you separate again within 6 months and the receiving parent did not already choose to end the assessment, either parent can reinstate the assessment by simply telling us you have separated again. The paying parent will only start paying child support from the new date of separation.

If the receiving parent chose to end the assessment and you are now separated, you will need to take reasonable action to obtain child support within 13 weeks of separating. This is done by applying for a child support assessment. If there is any reason that makes it difficult for you to apply for a child support assessment, you should talk to us. If you don't do this within 13 weeks of separating, your Family Tax Benefit Part A may be affected. If you don't seek an extension of your child support past the child's 18th birthday you will only receive the base rate of Family Tax Benefit Part A for the child.

Other payments that might be affected

When the care arrangements for your child changes, your eligibility for Centrelink payments may be affected. This can include receiving more or less money that you have previously.

Payments that might be affected by a change in care arrangements include: