How do I register for Income Tax Self-Assessment?

To register:

• Use Revenue’s eRegistration service (fastest method).
• Or submit Form TR1 for sole traders, partnerships, etc.
• Inform Revenue when starting a new non-PAYE income source.
• Registration also activates PRSI with the Department of Social Protection.
• Once registered, you must file online using ROS (Revenue Online Service) or via FastTax.ie’s integration with ROS.