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.

With a new online format, this year’s publication makes navigating data on taxpayer assistance, enforcement, and IRS operations easier, with graphic depictions of key areas and quick links to the underlying data. 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.

View details (XLS), or download the 2015 IRS Data Book in PDF format.

Highlights of this year's Data Book

• During FY 2015, the IRS collected more than $3.3 trillion, processed more than 243 million tax returns and other forms, and issued over $403 billion in tax refunds.
• With more than a 15-percent reduction in full-time-equivalent staffing compared to 5 years ago, operations across a number of areas were downsized, including the total number of individual tax return examinations, which decreased by 22 percent over the same time period.
• The agency’s Website continued to get heavy use with more than 493 million visits to IRS.gov in FY 2015; and one of our most popular online tools, “Where’s My Refund?”, handled a record-breaking 234 million inquiries, a 24-percent increase over the prior ye