Question to the HM Treasury:

To ask Mr Chancellor of the Exchequer, what steps he is taking to ensure people are not assigned incorrect tax codes.

Each year HM Revenue and Customs (HMRC) carry out rigorous assurance testing of the annual issue of tax codes to ensure a high level of accuracy. For 2016-17 the accuracy of annual PAYE coding notices, (based on information that HMRC receives during the year), is around 99 per cent.

HMRC have developed the new online Personal Tax Account which gives customers the ability to review their own personal tax status and encourages them to keep HMRC updated on changes in their personal circumstances to ensure even more customers are paying the correct tax at the right time.