The linked files are available as Microsoft Excel? files. A free is available for download, if needed.
Taxpayer Advocate Service: Postfiling Taxpayer Assistance program by type of primary issue and relief
NOTE: In prior editions of the ibet Data Book, Table 11 was presented as Table 20.
- 2023 XLSX
- 2022 XLSX
- 2021 XLSX
- 2020 XLSX
- 2019 XLSX
- 2018 XLS
- 2017 XLS
- 2016 XLS
- 2015 XLS
- 2014 XLS
- 2013 XLS
- 2012 XLS
- 2011 XLS
- 2010 XLS
- 2009 XLS
- 2008 XLS
- 2007 XLS
- 2006 XLS
- 2005 XLS
- 2004 XLS
- 2003 XLS
- 2002 XLS
- 2001 XLS
- 2000 XLS
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