To ask the Chancellor of the Exchequer, pursuant to the Answer of 31 October 2022 to Question 72471 on Health and Social Care Levy, what the cost to the public purse has been of the (a) IT, (b) extra support staff and (c) other costs arising from the (i) planned introduction and (ii) reversal of the Health and Social Care Levy; and what estimate he has made of the impact of these changes on the level of National Insurance collected in the 2022-23 financial year.

The additional National Insurance Contributions (NICs) revenue from the 1.25 percentage point increase is not directly identifiable in HMRC data. In its Economic and Fiscal Outlook for October 2021, the Office for Budget Responsibility said that it expected the measure to yield £16.5 billion over a 12-month period. Since that forecast, multiple changes to NICs rates and thresholds have taken place, making it difficult to quantify the effect of the increased rates that applied from April to November in isolation from other changes.