Cardinal Brady, the head of Ireland's Catholic church, has urged G8 leaders to make good on their pledge to tackle aggressive tax avoidance at a summit later this month, declaring that "paying a fair share of taxes" is a "moral obligation"...Last month, US senators described Ireland as a "tax haven", accusing it of facilitating a multibillion-dollar tax avoidance structure for Apple. Days earlier, politicians in the UK attacked Google for using Ireland as a base from which to book UK sales – a move that meant it would not have to pay HMRC tax on any resulting profits…Tax justice campaigners argue that Ireland's ultra-low corporation tax rate of 12.5%, combined with a series of additional tax incentives, is having a corrosive impact on tax coffers elsewhere, particularly poorer nations.