From the Tax Prof blog, found here: http://taxprof.typepad.com/taxprof_blog/2012/04/joint-tax-co...


The Joint Committee on Taxation has released Disclosure Report for Public Inspection Pursuant to Internal Revenue Code Section 6103(p)(3)(C) for Calendar Year 2011 (JCX-38-12):

...

The report reveals that the IRS made 9 billion (up from 7.1 billion in 2010) disclosures of tax return information to federal and state agencies. Here are the Top 5 recipients of taxpayer information:

1. States: 6.9 billion disclosures (up from 4.2 billion in 2010)
2. Bureau of Census: 1.3 billion disclosures
3. Congressional Committees: 700 million disclosures
4. Medicare Premium Subsidy Adjustment: 41.0 million disclosures
5. Child Support Enforcement Agencies: 11.3 million disclosures


Assuming there are about 150 million returns filed each year, that's an average of 60 disclosures per return.

Here's a link to the report itself from the Joint Committee on Taxation. It's only 7 pages. https://www.jct.gov/publications.html?func=startdown&id=...

--Peter