US is one of two countries in the world that taxes its non-inhabitant citizens on worldwide earning, in the same manner and rates as inhabitants; another is Eritrea. The U.S.A. Supreme Court upheld the constitutionality of imposition of such a tax in the case of Cook v. Tait.
Wages taxes are imposed by the federal and all state governments. These inclusive Social Security or Medicare taxes enforced on both employers and employees, at a conjointed rate of 15.3% (13.3% for 2011 or 2012). Social Security tax applies only to the first $106,800 of wages in 2009 thru 2011. However, advantages are just increased on the first $106,800 of wages. Employers should withhold earning taxes on wages. An unemployment tax and certain other picks up apply to employers. Payroll taxes have dramatically increased as a share of federal income since the 1950s, while corporate revenue taxes have fallen as a part of income. (Company profits have not fallen as a share of GDP).
Treasure taxes are imposed by most local governments and many particural objective authorities refer to the fair market value of property. School or other authorities are often separately governed, also enforce distinct taxes. Treasure tax is generally enforced only on realty, though several jurisdictions tax some forms of business wealth. Treasure tax rules and rates differ widely with yearly median rates ranging from 0.2% to 1.9% of a wealth’s value depending on the state.