The report describes activities of the IRS from Oct. 1, 2006, to Sept. 30, 2007, and includes information about returns filed, tax collections, enforcement, taxpayer assistance, as well as the IRS budget and workforce.

During fiscal year 2007, the IRS collected almost $2.4 trillion in taxes (net of refunds) and processed more than 235 million returns. More than 114 million individual income tax return filers received tax refunds that totaled $248.6 billion. In fiscal year 2007, IRS spent an average of 40 cents to collect each $100 of tax revenue, which was the lowest in seven years and down from 42 cents per $100 in fiscal year 2006.

IRS examined nearly 1.4 million individual income tax returns in fiscal year 2007. IRS personnel answered more than 33.2 million toll-free calls from taxpayers during the fiscal year, and the IRS Web site received about 215 million visits.

An electronic version of the 2007 IRS Data Book can be found on the Tax Stats page. Printed copies of the IRS Data Book, Publication 55B, will be available by mid-April 2008 from the U.S. Government Printing Office. To obtain a copy, write to the Superintendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250-7954, or call (202) 512-1800 for voicemail, or fax a request to (202) 512-2250.