It appears that many Canadians may be U.S. citizens. Recent legislation exacerbates the tax consequences of surrendering such dual nationality.
The United States imposes its income tax on three bases: on income having a U.S. source, on the U.S. residence of the taxpayer, or on the U.S. citizenship of the taxpayer. The Internal Revenue Code1 is quite detailed in its definitions of U.S. residence and U.S. source income, but it barely addresses the concept of citizenship. IRC reg. section 1.1-1(c) states that every person born or naturalized in the United States is a citizen, and refers to title 8 of the United States Code, "Aliens and Nationality," sections 1401-1409.
Recent tax legislation dealing with citizenship, particularly with the consequences of renouncing one's citizenship, has prompted numerous inquiries from clients concerning their U.S. citizenship status.2 The following article provides an outline of the rules regarding the acquisition and retention of U.S.