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2007 Data Book entire publication

2004 Data Line Count Publication

Publication 6961 (Revised 08/18)

soi-public-release-list.xlsx

Look here for the prior year IRS Data Books (Publication 55B). The tables shown in these publications contain statistics for IRS collections and refunds, as well as number of returns. There's also information on examination activities, taxpayer assistance, chief counsel, appeals, criminal investigation, and more.

2008 Publication Section 1: Changes in Law

Look here for the IRS Data Book (Publication 55B), with links to prior IRS Data Books. The tables shown in these publications contain statistics for IRS collections and refunds, as well as number of returns. There's also information on examination activities, taxpayer assistance, chief counsel, appeals, criminal investigation, and more.

Calendar Year Return Projections for the United States and IRS Campuses, Tables, 2019, Publication 6186

2007 Publication 1304 Section 2--Description of Sample

2005 Individual Income Tax Returns Publication 1304