Earned Income 
Credit Modernization

The ITEP Microsimulation Tax Model is a tool for estimating the impact of federal, state, and local taxes by income group.  It uses a very large stratified sample of federal tax returns, as well as supplementary data on the non-filing population, to derive estimates that apply to taxpayer populations at the state level. The U.S. Treasury Department, the Congressional Joint Committee on Taxation, the Congressional Budget Office, and several state departments of revenue use similar models.  For a more detailed explanation of the ITEP Tax Model, see http://www.itep.org/about/itep_tax_model_full.php