PWBMsim produces a set of individuals and families that are designated as tax filers. PWBM-TM uses these filers to forecast federal tax revenues. The tax filing units are not of interest independently for PWBM-TM. PWBM matches these tax filing units with the Internal Revenue Service (IRS) Statistics of Income (SOI) data. The SOI makes available a representative sample of the individual income tax-filers. This Public Use File (PUF) allows PWBM to forecast the line items necessary to calculate a filer’s tax liability. It also gives PWBM enough information to model changes in the tax code that directly affect individuals. The latest version of this PUF is for tax year 2010.1

  1. The 2012 data has been ordered.  ↩