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Child Support estimates review (Pre 1 July 2010) 277-07080000



This document outlines the process to follow where a parent elects to have their assessment based on an estimate of income.

Estimates review

Where a parent's income varies significantly from that used in the child support assessment the Child Support (Assessment) Act 1989 allows the parent to elect to have their assessment based on an estimate of income in some circumstances. Parents are required to keep their estimates of income accurate. If the estimate is no longer accurate it may be necessary to review it. An estimate review updates the income used in the child support assessment to more accurately reflect the actual income of the parent.

This document applies:

  • to WA ex nuptial customers whose first estimate of the child support period was lodged before 3 March 2011
  • to any child support period which has an estimate lodged before 1 July 2010

For all other customers, see Child support estimates review (post 1 July 2010).

For more details about WA ex nuptial customers, see WA child support ex-nuptial cases.

For details on new estimates or reconciling an estimate, see the:

The Resources page contains:

  • an authorisation checklist
  • issuing of S161 notices on estimate payments
  • retrospective estimate reviews (income decrease)
  • actions required when proceeding with an estimate review
  • income estimate scenarios, and
  • FAQs relating to income estimates

Child Support estimates (Post 1 July 2010)

Child Support Estimates - Reconcile (from 1 July 2011)

Child Support's information gathering powers

Income processing for Child Support customers

Estimates Cuba Process Help

Income Cuba Process Help

Section 120/161 Notice Cuba Process Help

Client Income

Estimate Income

Income Details