The Joint Committee on Taxation yesterday released Disclosure Report for Public Inspection Pursuant to Internal Revenue Code Section 6103(p)(3)(C) for Calendar Year 2004 (JCX-63-05).  Here is the Introduction:

Pursuant to § 6103(p)(3)(C), the Secretary of the Treasury shall, within 90 days after the close of each calendar year, furnish to the Joint Committee on Taxation for disclosure to the public a report which provides with respect to each Federal agency and certain other entities the number of: (1) requests for disclosure of returns and return information (as such terms are defined in § 6103(b)); (2) instances in which returns and return information were disclosed pursuant to such requests or otherwise; and (3) taxpayers whose returns, or return information with respect to whom, were disclosed pursuant to such requests. In addition, the report must describe the general purposes for which such requests were made. Pursuant to § 6103(p)(3)(C), the IRS prepared a disclosure report for public inspection covering calendar year 2004, which the Joint Committee on Taxation received on April 15, 2005. This document sets forth the report of the IRS.

The report reveals that the IRS made 4.6 billion disclosures of tax return information to federal and state agencies.  Here are the Top 5 recipients of taxpayer information:

Disclosure of Tax Return Information, 2004
To Whom Disclosed	Number of Disclosures
States	3,279,861,474
Bureau of Census	1,013,390,127
Congressional Committees	168,450,887
GAO	75,985,596
Bureau of Economic Analysis	18,323,622