Essential server maintenance notice: CORE and the RBO will be unavailable from 17:30 to 18:30, Thursday 20 November 2025. Please ensure to save all your work on the system before this time. We apologise for the inconvenience caused.
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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Latest News
See All NewsPeak Filing 2025
18 November 2025We are now in the Peak Filing period for the CRO, where over fifty thousand Annual Returns are typically submitted through CORE during the month of November up until the 25th of November. As Annual Return submission levels will rise the closer we get to the 25th, the number of users accessing and using CORE
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Essential server maintenance notice
18 November 2025CORE and the RBO will be unavailable from 17:30 to 18:30, Thursday 20th November 2025. Please ensure to save all your work on the system before this time. We apologise for the inconvenience caused. Published 18/11/2025
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What We Do
– The Companies Registration Office is the central repository of public statutory information on Irish companies and business names.
– The CRO operates under the aegis of the Department of Enterprise, Tourism and Employment.
Our Main Functions
The CRO’s core functions include:
– The incorporation of companies
– Enforcing the filing obligations of companies
– Making information on companies publicly available
– Registering Business Names and Limited Partnerships
