Welcome to the Companies Registration Office Ireland

The Companies Registration Office (the CRO) is the central repository of public statutory information on Irish companies, business names, and limited partnerships

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Revenue maintenance notice

21 November 2025
Revenue will conduct scheduled system maintenance on Saturday 22 of November from 13:00 to 21:00. During this period, ROS (Revenue Online Service) may experience some disruption. If you experience difficulty in using ROS during this period, we suggest using the signature page upload option on CORE as an alternative, or to try again at a
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Daily Processing Times 21/11/2025

21 November 2025
Published 21/11/2025
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Peak Filing: 4 days left

21 November 2025
There are four days left in the Peak Filing period for the CRO. During the month of November up until the 25th of November, over fifty thousand Annual Returns are typically submitted through CORE. As Annual Return submission levels will continue to rise the closer we get to the 25th, the number of users accessing
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