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The Identity Protection (IP) PIN Survey is an important project that can benefit IP PIN users. We are conducting a survey of randomly selected taxpayers to learn more about different methods of sending notices and letters. Your answers will help us as we look for ways to increase the security of taxpayer information. All information provided will be used for research purposes only and participation is voluntary.

Look here for the 2007 IRS Data Book (Publications 55B), with links to the 1995 to 2000 2001 to 2003 and 2004 to 2006 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.

SOI Bulletin - Spring 2000

The Office of Professional Responsibility (OPR) webinars cover tax practice regulations, diligence obligations and professional responsibilities for tax professionals.

Find out how to contact the Office of Enrollment.

Information about Form W-4R, Withholding Certificate for Nonperiodic Payments and Eligible Rollover Distributions, including recent updates, related forms and instructions. Form W-4R is used so your payer can withhold the correct amount of federal income tax from your nonperiodic payment(s) or eligible rollover distribution from an employer retirement plan, annuity (including a commercial annuity), or individual retirement arrangement (IRA).

SOI Tax Stats - Corporation Source Book Statistical Tables 2002 (All Sectors)

SOI Tax Stats - State Data FY 2012 Data Includes Returns Filed, Taxes Collected and Refunds by State. IRS Data Book¡ªFiscal Year 2012

Learn how to choose a qualified tax return preparer and access the IRS Directory of Federal Tax Return Preparers with Credentials and Select Qualifications.

This document contains the federal tax forms, schedules, and information documents that the Statistics of Income (SOI) Division of the IRS has selected for its Tax Year programs.