The Guides to Social Policy Law is a collection of publications designed to assist decision makers administering social policy law. The information contained in this publication is intended only as a guide to relevant legislation/policy. The information is accurate as at the date listed at the bottom of the page, but may be subject to change. To discuss individual circumstances please contact Services Australia.

1.1.C.21 Child support liability


A child support liability is a maintenance liability as defined under FAAct Schedule 1 clause 20A. A maintenance liability (1.1.M.23), is the requirement to pay maintenance or child support (1.1.C.20). A payer (1.1.P.72) is liable to pay child support to a payee (1.1.P.71).

A maintenance liability in respect of child support is made by one of the following:

  • administrative assessment by Child Support
  • variation of administrative assessment by court order, or
  • child support agreement (

Act reference: FAAct Schedule 1 clause 20A(10) Meaning of maintenance liability, Schedule 1 clause 20A Annualised amount of maintenance income

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