I am informed by Revenue that it has no planned downtime for the Revenue Online Service (ROS) system during the Pay & File period. However, unplanned downtime, by its nature, is unexpected and therefore cannot be anticipated or forewarned.
There was an issue with ROS from approximately 1:30pm to 2:30pm on 15 October. The issue was due to human error that occurred during normal system maintenance activity and was resolved within a short space of time.
Revenue has further advised that the ROS system has very high reliability with 99.99% availability recorded in Q3 2024. Over 383,000 self-assessed income tax returns for 2023 have already been filed through the system and Revenue encourages taxpayers and agents to file in advance of the deadline date. Revenue continually monitors the ROS system and addresses any issues that may occur expeditiously.