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SOI Tax Stats - IRS Data Book


The Internal Revenue Service (IRS) Data Book is published annually by the IRS and contains statistical tables and organizational information on a fiscal year basis. The report provides data on collecting the revenue, issuing refunds, enforcing the law, assisting the taxpayer, and the budget and workforce.

You can view selected summary graphs, key statistics, and descriptions of the tables and the IRS functions they cover. To download data tables on IRS and taxpayer statistics, visit the relevant section page listed on the left-side navigation column.

Graphic shows gross collections by type of tax for fiscal years 2007 through 2016. There has been slow and steady growth in total gross collections, which include individual income, business income, employment, estate and gift, and excise tax.

View details (XLS), or download the 2016 IRS Data Book in PDF format.

Highlights of this year's Data Book

  • During Fiscal Year (FY) 2016, the IRS collected more than $3.3 trillion, processed more than 244 million tax returns and other forms, and issued more than $426 billion in tax refunds.
  • The IRS website, a focal point for the future state of tax administration, was visited more than half a billion times in 2016, and nearly 300 million inquiries were answered by the “Where’s My Refund?” tool on
  • In the last five years as the agency’s budget has been reduced, the IRS has lost almost 15 percent of its workers. Key measures of enforcement activity, including audit rates, have also declined in several categories.


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Page Last Reviewed or Updated: 30-Mar-2017