clipped from crooksandliars.com

According to the Government Accountability Office, nearly all of America's top 100 corporations maintain subsidiaries in countries identified as tax havens. As the GAO notes, there could be reasons other than avoiding the IRS to set up branches in places such as Singapore, Luxembourg and Switzerland, where taxes are light or nonexistent and keeping clients' illicit secrets is considered a matter of national pride.

Goldman Sachs Group

Countrywide Financial

Wachovia

Lehman Brothers

Citigroup

Morgan Stanley

When the cost of these shenanigans was last estimated two years ago, the U.S. government's annual loss in revenue due to tax avoidance by major corporations and super-rich individuals was pegged at about $100 billion -- considerably more than a rounding error, even today. But of course that is only a rough assessment, as is the estimate of $12 trillion in untaxed assets hidden around the world. Nobody will know for certain until the books are opened and transparency is established.