Deadline for self- assessment The Income Tax Pay & File deadline for ROS customers is 12th November 2015. To avail of this extended deadline, you must file the 2014 Form 11 return and make the appropriate payment through ROS for: Preliminary Tax for 2015, Income Tax balance due for 2014. Where only one of these … Continue reading ROS Pay and File Deadline 12 November 2015 – Useful Tips