The study by the Institute on Taxation and Economic Policy said that undocumented immigrants paid some $11.8 billion in state and local taxes in 2012. That included $7 billion in sales and excise taxes, $3.6 billion in property taxes and $1.1 billion in personal income taxes. Not includes are federal taxes, the study’s authors said. “The reality is the 11.4 million undocumented immigrants living in the United States pay billions of dollars in local, state, and federal taxes,” the study reads, “and their tax contributions would increase under immigration policy reform.”