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SOI Private Foundations Study, Form 990-PF Revisions

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. Below you will find a selection of papers organized by presentation year.

Fall 2008 Bulletin

SOI Tax Stats - Papers - 2005 American Statistical Association Conference

SOI Bulletin - Winter 1999 - 2000

The gross tax gap is the difference between true tax liability for a given tax year and the amount that is paid on time. It is comprised of the nonfiling gap, the underreporting gap, and the underpayment (or remittance) gap. The net tax gap is the portion of the gross tax gap that will never be recovered through enforcement or other late payments.

SOI Bulletin Winter 1998 - 1999

SOI Bulletin - Summer 1999

Corporation Tax Statistics S-Corporations

This section contains statistical tables, articles, microdata, and other information on charities and other tax-exempt organizations, those exempt from income tax under Sections 501(c)(3) and 501(c)(4)-(9) of the Internal Revenue Code.