The government are going to slash the disregard to £5,000 in tax credits. The government believes there is more than £300m to be saved over the next three years by reducing fraud and error, and also wants to reclaim £400m in unpaid debts.
http://www.bbc.co.uk/news/uk-politics-20873180
http://www.bbc.co.uk/news/uk-politics-20873180