Phoenix Business Journal: The Federation for American Immigration Reform estimates that illegal immigration costs federal and local taxpayers $113 billion a year. The group's report, Fiscal Burden of Illegal Immigration on U.S. Taxpayers estimates costs based on an analysis of federal, state and local spending data related to the estimated 13 million illegal aliens and their U.S.-born in the U.S. The report also notes that undocumented workers pay about $13 billion a year in taxes, resulting in a net cost to taxpayers of about $100 billion. The $113 billion total translates to $1,117 per household.