Please Note: You must ensure that you use the same browser to login to CORE as you do to Revenue/ROS.

Click here to access instructions from Revenue on registering with ROS.

Below are some useful tips to help you sign in to ROS:

• If your firm is registered with ROS, ensure you are not using the Firm’s cert when trying to sign in. The Cert you must use is a sub-cert in the name of the individual signing.
• Make sure you have spelt your name correctly, when registering, and that it corresponds with the name on your ROS sub-cert
• Use the correct email address associated with your ROS sub-cert when signing in
• Ensure that the ROS sub-cert is saved on the browser on the PC/laptop you are using
• Ensure you are using the correct ROS Registration Number
• Ensure that your browser setting is to Allow All Cookies

 
If you are still having difficulties with ROS, please contact the Revenue/ROS Technical Helpdesk at https://www.ros.ie/helpcentre/help.html