CSA will do the following, per their Guide at part 2.2.2 (
2.2.2 Care determinations & changes in care | Child Support Guide ):
"If the Registrar is not notified or does not otherwise become aware of a change of care within 28 days of the change, and:
- the parent or non-parent carer's care has increased, the assessment will be amended using the new care percentage for that parent or non-parent carer from the date the Registrar was notified or otherwise became aware of the care change (unless care changes again prior to this date)
- the parent or non-parent carer's care has decreased, the assessment will be amended using the new care percentage for that parent or non-parent carer from the date the change of care occurred (section 54F(3)(b)).
The parties have an obligation to notify the Registrar of increases or decreases in care. If they fail to comply with that obligation, neither party should benefit from that failure. Where there is a delayed notification of a care change, an increased care percentage will only apply from date of notification.
...
Example: Soo-Min called DHS on 23 January 2018 to advise of a care change that occurred on 3 January 2018. The Registrar contacted the other parent, Hyun, who confirmed that the care changed on that date. As the Registrar was notified within 28 days of the care change, the Registrar changed the parents' percentages of care and amended the assessment from 3 January 2018.
Example: Fatima advised DHS on 16 December 2018 that a change of care had occurred on 15 September 2018, with Fatima's care increasing to 80% and Abdul's care decreasing to 20%. The Registrar received confirmation from the other parent, Abdul, that the care changed on that date. As the Registrar was notified more than 28 days after the care change, the Registrar changed the parents' percentages of care and amended the assessment: Fatima's care from 16 December 2018, the day of notification; and Abdul's care from 15 September 2018, the day of the care change."
