Allum and Greigson (Child support)

This matter concerned an appeal by Mr. Allum against a decision of the Child Support Registrar concerning the percentage of care for the parties' child. The Registrar had revoked existing percentage of care determinations and made new determinations, which Mr. Allum contended were incorrect.

The primary legal issues before the court were whether there had been a change to the likely pattern of care for the child, and if so, whether the Registrar had erred in revoking the existing determinations and making new ones. The court also considered the application of date of effect provisions, the question of whether reasonable action had been taken by the parent with reduced care, and whether special circumstances existed that warranted a departure from the usual rules.

The court affirmed the Registrar's decision, finding that the evidence supported a change in the likely pattern of care. It was determined that the Registrar had acted within their powers in revoking the previous determinations and making new ones based on the altered care arrangements. The court also found that the Registrar had correctly considered the relevant provisions regarding the date of effect and the actions of the parent with reduced care, and that no special circumstances existed to justify a different outcome.