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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.

Work out how much you might get or pay with a child support formula assessment, and see the costs and rates the formula is based on.

Last updated: 30 Apr 2025
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