HM Revenue & Customs (HMRC) has apologised for issuing a number of incorrect 2013-2014 tax calculations (P800) and payable orders to customers during a three-week period from 15 September. The issue is limited to Income Tax only.
In a statement released they said:
HM Revenue and Customs (HMRC) is urgently investigating this matter to resolve the issue. In the meantime, those customers who think their 2013-14 P800 may be wrong should contact our helplines for further advice before making repayments or cashing cheques.
We are sorry for any worry or inconvenience caused.
If you think this may affect you it is advisable not to repay any underpayment shown on the P800, nor do they recommend cashing any payable order received. HMRC aims to resolve the matter and issue a revised P800 to the customer in the next 6-8 weeks.