Question to the HM Treasury:

To ask the Chancellor of the Exchequer, how much data HM Revenue and Customs holds on each staff member in each government department.

HMRC holds data about its own staff for management purposes and to fulfil its functions, consistent with any other employer. This includes information such as grade, salary, bank details, and address.

For other Civil Servants outside of HMRC, HMRC would hold the same data as for any other employee in the tax system, in the private and public sectors. This is to administer the tax system.

HMRC publishes full details of the data held about all customers, how, and when it is used on their Privacy Notice, published here: https://www.gov.uk/government/publications/data-protection-act-dpa-information-hm-revenue-and-customs-hold-about-you/data-protection-act-dpa-information-hm-revenue-and-customs-hold-about-you.