A new report by two Trinity College economists has found that foreign owned manufacturing companies pay almost 10% of all taxes collected by the Government in Ireland.
The study also finds that American corporations are responsible for more than half of the foreign direct investment in Ireland.
It also finds that although only 5.5% of manufacturing companies in Ireland are American they produce more than 65% of all Ireland's manufacturing output.
The report concludes that Ireland is one of the most globalised economies in the world, and would suffer disproportionately if the global economy slows down.