The Foreign Earned Income tax credit if $91,500 for 2009. But more than likely you'll still be on the hook for Social Security and Medicare (depending on the c

The Foreign Earned Income tax credit if $91,500 for 2009. But more than likely you'll still be on the hook for Social Security and Medicare (depending on the country) so you'll likely be paying a minimum of 15% tax. Anything over the $91,500 gets taxed as if earned in the normal US tax bracket. So if you happen to be running a successful business abroad, get ready to pay the US dearly.