HMRC advise that a number of incorrect 2013–14 tax calculations (P800) and payable orders were issued to taxpayers in a three-week period from 15 September.

This issue only affects a small proportion of the 2013–14 P800s and payable orders which were issued in this three-week period, and the issue is limited to Income Tax only.

HMRC is urgently investigating this matter to resolve the issue. In the meantime, those taxpayers who think their 2013-14 P800 may be wrong should contact HMRC for further advice before making repayments or cashing cheques.

HMRC apologise for any worry or inconvenience caused.