Undocumented immigrant households paid between $159 million and $194 million in total taxes in 2005. We estimate the average undocumented household working on the books in Colorado paid $1,861 in state and local sales, income and property taxes in 2005. Undocumented immigranttax payments are equal to 70 to 86 percent of the state and local governments??? costs for providing federally mandated services.