Question to the HM Treasury:

To ask Mr Chancellor of the Exchequer, for what reason HM Revenue and Customs experienced difficulties with the 2015-16 tax calculation producing correct repayments due for that year; and when those difficulties are likely to be resolved.

While significant numbers of customers are not affected, HM Revenue and Customs (HMRC) had identified some issues with the self-assessment tax calculation. These related to Class 2 National Insurance contributions and the Marriage Allowance.

HMRC has either fixed these issues directly or has adopted processes to deal with them effectively.