Taxable gifts are certain gifts of U.S. property by nonresident aliens, most gifts of any property by citizens or residents, in excess of an annual exclusion ($13,000 for gifts made in 2011) per donor per donee. Taxable estates are certain U.S. property of non-resident alien decedents, and most property of citizens or residents. For aliens, residence for estate tax purposes is primarily based on domicile, but U.S. citizens are taxed regardless of their country of residence. U.S. real estate and most tangible property in the U.S. are subject to estate and gift tax whether the decedent or donor is resident or nonresident, citizen or alien.