Tax Credits: Adjudicator’s Office and Ombudsman’s reports

The Adjudicator’s Office investigates complaints about HMRC, and the Ombudsman’s office investigates complaints made against a wide range of Government departments including HMRC.

More information about the Adjudicator complaints process and about taking a case to the Ombudsman can be found in the tax credits guidance section of this website.

Adjudicator’s Office

Each year, the Adjudicator’s Office publishes a report which sets out the number of complaints dealt with (including tax credits) and the number that were upheld. The report also highlights key areas of concern as well as a series of case studies showing the outcome as well as the reasoning for each example.

20212020201920182017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003

Ombudsman’s reports

Ombudsman Annual Reports -

2020/20212019/20202018/2019 | 2017/20182016/20172015/2016 | 2014/2015 | 2013/2014 | 2012/2013 | 2011/2012 | 2010/2011 | 2009/2010 | 2008/2009 | 2007/2008 | 2006/2007 | 2005/2006 | 2004/2005

Last reviewed/updated 28 April 2022