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.

3.5 Post-separation income

Context

A parent (1.1.P.10) can apply to have additional PSI (1.1.P.90) (additional income) that was earned, derived or received after separation excluded from their ATI (1.1.A.20) (3.1.1) for child support (1.1.C.60) purposes in certain circumstances. A parent may apply to have additional income excluded, regardless of whether they pay or receive child support.

The exclusion of additional income post-separation is limited to the first 3 years after the parents last separated (1.1.S.30).

Last reviewed: 1 July 2025