In 2017, if you file your tax return online using the Revenue Online Service (ROS), the due date is extended to 14 November 2017. To avail of this extended deadline, you must file the 2016 Form 11 return and make the appropriate payment through ROS for:
- Preliminary Tax for 2017, and
- Income Tax balance due for 2016
Where only one of these actions is completed through ROS, the extension does not apply and the required date to submit returns and payments is 31 October 2017.
You can find more information about completing your income tax return on the Revenue website.