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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.

From 8 May 2025, the UOMI rates on underpayment and overpayments of tax will change.

The new rates are:

  • underpayment - 9.89% down from 10.88%
  • overpayment - 3.27% down from 4.30%.

We review rates regularly so that they are aligned with market interest rates.

Last updated: 10 Apr 2025
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