Digital Signing Certificate

Please ensure you use the same browser to login to CORE as you do for Revenue/ROS.

With a Digital Signing Certificate, you can sign CRO forms online and eliminate paper and save time.

  • File your B1 - Annual Return, with PDF Accounts fully online.
  • File your B10 - Change of Director forms online;
  • File your B2 - Change of Address forms online;
  • File your C1 -  Mortgage/Charge

You need to register for a Digital Signing Certificate. It’s easy to do. Registration for the certificate takes place via the Revenue Commissioners ROS website and instructions are detailed in the link below