Question to the HM Treasury:

To ask the Chancellor of the Exchequer, how much additional income was raised from the (a) increase in the National Insurance rate in April 2025 and (b) lowering of the National Insurance threshold.

Estimates for the additional static revenue expected to be raised from the employer NICs changes, announced at Autumn Budget 2024 and which came into force in April 2025, can be found in the OBR Supplementary forecast information on static costing of changes to Employer National Insurance Contributions.

Further information, including on behavioural impacts can be found in Chapter 3.8 of the OBR Economic and fiscal outlook – October 2024.