HMRC’s performance in collecting debt has improved with amounts due from taxpayers but not yet paid decreasing by £1.6 billion to £26.1 billion the National Audit Office (NAO) said.
But more than 18 million cases of potentially overpaid or underpaid tax from 2007/08 and earlier were outstanding at the end of March 2010. Early analysis suggested that around half of those cases might lead to repayments of £3 billion and recoveries of £1.4 billion.
The Department’s evaluation suggested that running campaigns concentrating on debts for each type of tax and tailoring collection activities accordingly had increased collection rates.
Amyas Morse Head of the National Audit Office said: ‘The Department has not made enough progress in reducing the backlog of 18.2 million income tax cases where there is potentially overpaid or underpaid tax. The administration of tax in 2009/10 by HMRC has been influenced...