Corporate haven

The G7, which is holding its annual summit this weekend in a Cornish resort in the UK, gave the effort a boost last week when it issued a joint statement on how revamping the global corporate tax structure should proceed. But Hungarian Prime Minister Viktor Orban this week called the idea "absurd" and said he would not support it.

Greek companies were the most heavily burdened by tax in the Organization for Economic Cooperation and Development (OECD) over the last decade, according to a study by the Washington-based Tax Foundation.