Skip to main content

Planned system outage - 12 September 2026 | Our online services including myIR, self service phone lines and gateway services will be unavailable on Saturday 12 September, 2026 from 1pm to approximately 10.30pm while we complete a planned system update. We apologise for any inconvenience this may cause.

Apply through us, and we'll use the child support formula to work out who pays child support, and how much.

Unlike private and voluntary agreements, if you have a formula assessment you cannot decide the amount of child support payable.

Last updated: 18 Sep 2025
Jump back to the top of the page