I contacted the revenue and asked them to send me a reassessment for the year 2017 though the MyEnquiries function on ROS. This reassessment was required as I owe tax due to an early exit of an EIIS fund. The assessment has now been completed for 2017 but the tax owed is very high and I feel their is errors in the assessment by the revenue. Can I request a recalculation or what is the best approach to take with the revenue?