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For you and your family
Standard mileage and other information

Forms and Instructions

Individual Tax Return
Instructions for Form 1040
Request for Taxpayer Identification Number (TIN) and Certification
Request for Transcript of Tax Return


Employee's Withholding Allowance Certificate
Employer's Quarterly Federal Tax Return
Employers engaged in a trade or business who pay compensation
Installment Agreement Request

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Amend/Fix Return
Apply for Power of Attorney
Apply for an ITIN
Rules Governing Practice before IRS

SOI Tax Stats - Joint Statistical Research Program

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Statistics of Income Joint Statistical Research Program

The goals of the Statistics of Income (SOI) Joint Statistical Research Program are to provide new understandings of taxpayer behavior that aid in administering the U.S. tax system and new insights and understandings of the ways that existing tax policies affect individuals, businesses, and the economy. To that end, IRS researchers are matched with qualified researchers outside the Federal Government with the expectation that the projects will lead to developing new datasets useful for future tax administration research, tabulations that can be released to the public, and published articles that discuss the research results, versions of which will be released as working papers on Tax Stats. The program is usually offered every other year.

Call for Proposals Selected Research Projects
2018 2016

Statistic of Income Working Papers

The Statistics of Income (SOI) working papers present new and exciting research on the U.S. Federal tax system and the methods used to produce tax statistics. Papers are presented at professional conferences, such as the Joint Statistical Meeting of the American Statistical Association and the National Tax Association’s annual conference on taxation, and are often published in professional journals. Above you will find a selection of papers organized by presentation year.


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