Michael Noonan (Limerick City, Fine Gael) | Oireachtas source

The sales of property portfolios, through which this mechanism facilitated tax avoidance, started around early 2014 so it would probably be in autumn 2015 when the Revenue had detailed information in the form of tax returns from these companies. It was brought to our attention in early 2016 and we moved as soon as we had figured out a way of closing the loophole. Unusually, we published it in September rather than waiting for the Finance Bill. If I can get more information that I can stand over, I will give it to the Deputy.