Estate tax in the United States subject to a different regime for estate tax than U.S. citizens and residents. The estate tax is imposed only on the part of the gross non-resident alien's estate that at the time of death is situated in the United States. These rules may be ameliorated by an estate tax treaty. The U.S. does not maintain as many estate tax treaties as income tax treaties, but there are estate tax treaties in place with many of the major European countries, Australia, and Japan. U.S. real estate owned by a non-resident alien through a foreign corporation is not included in a non-resident
Income tax in the United States insurance (Social Security) taxes in 2016. The table below also does not reflect changes, effective with 2013 law, which increased the average tax paid by the top 1% to the highest levels since 1979, at an effective rate of 33%, while most other taxpayers have remained near the lowest levels since 1979. Income tax is imposed as a tax rate times taxable income. Taxable income is defined as gross income less allowable deductions. Taxable income as determined for federal tax purposes may be modified for state tax purposes. The Internal Revenue Code states that "gross income means all income from