The linked files are available as Microsoft Excel® files. A free Excel Viewer is available for download, if needed. Examination Coverage: Recommended and Average Recommended Additional Tax After Examination, by Type and Size of Return NOTES: IRS Data Book Table 17b has been discontinued. A replacement data series is now available in Table 18: Examination Coverage: Recommended Additional Tax, and Returns with Unagreed Additional Tax, After Examination, by Type and Size of Return. In prior editions of the IRS Data Book, Table 17b was presented as Table 9a. 2019XLSX 2018XLS 2017XLS 2016XLS 2015XLS 2014XLS 2013XLS 2012XLS 2011XLS 2010XLS 2009XLS 2008XLS 2007 2006 2005XLS 2004XLS 2003XLS 2002XLS 2001XLS 2000XLS 1999XLS 1998XLS Return to the IRS Data Book home page