According to the NY Times 2012/07/01:
"President Obama has criticized outposts like the Caymans, complaining that they harbor giant tax schemes. But here in Wilmington, just over 100 miles from Washington, is in some ways the biggest corporate haven of all. It takes less than an hour to incorporate a company in Delaware, and the state is so eager to attract businesses that the office of its secretary of state stays open until midnight Monday through Thursday — and until 10:30 p.m. on Friday.
Nearly half of all public corporations in the United States are incorporated in Delaware. Last year, 133,297 businesses set up here. And, at last count, Delaware had more corporate entities, public and private, than people — 945,326 to 897,934.
……
Delaware today regularly tops lists of domestic and foreign tax havens.”
Businesses in the UK also have similar opportunities to do similarly, some closer to home than Luxembourg.
In doing this, corporates save money and can offer lower prices to customers for goods and service supplied. Governments lose tax money, but could simply raise the lost income by imposing additional taxes on sales, except that they wish to avoid exposing the reality that the end consumer always pays every cost and the cost of the state is extraordinarily high. The indirect methods of corporation taxes and employee income taxes keep the voters happy in the belief that they aren't really paying those taxes when spending their take home pay. Honest and transparent tax policies would not include using companies as tax conduits by the back door.