Irelandâs Days as a Tax Haven May Be Ending, but Not Without a Fight For decades, multinationals moved to Ireland for its low taxes. A new global tax plan has put Dublin on the defensive. Silicon Docks in central Dublin, where major tech companies have their headquarters.Credit...Paulo Nunes dos Santos for The New York Times July 8, 2021Updated 12:06 p.m. ET On the crowded waterside quay of Dublinâs Silicon Docks neighborhood, Googleâs European headquarters tower above the skyline. Facebook and Twitter are neighbors. The European bases of Apple, Pfizer and hundreds of U.S. multinationals are implanted around the country, symbols of the commerce produced by Irelandâs famously low corporate taxes.