I am informed by the Revenue Commissioners that the most relevant information available to them is the estimated Corporation Tax paid in 2012 and 2013 by companies previously licensed to operate in the International Financial Services Centre (IFSC). This is of the order of €456 million and €497 million in 2012 and 2013 respectively.
It should be noted that these figures relate only to those companies that were once licensed under the preferential IFSC tax regime, which expired in 2005, and for which registrations ceased in 2002. Otherwise, the tax yield from other companies based in the IFSC is not separately identifiable.