Question to the HM Treasury:

To ask His Majesty's Government when they expect to publish updated estimates of the wealthy tax gap which is the difference between the amount of tax that should be paid by wealthy individuals and what is actually paid.

HM Revenue and Customs (HMRC) estimates the size of the tax gap, which is the difference between the amount of tax that should, in theory, be paid to HMRC, and what is actually paid. The tax gap statistics are published annually, most recently on 19 June 2025, with the next release planned for June 2026. [1]

The latest estimate of the wealthy customer group tax gap was £2.1 billion for the tax year 2023 to 2024. [2]

[1] The latest estimates include tax years from 2005 to 2006 through to 2023 to 2024 and are available at: https://www.gov.uk/government/statistics/measuring-tax-gaps.

[2] Historical estimates for the tax gap for wealthy customers can be found in table 1.4 here: https://www.gov.uk/government/statistics/measuring-tax-gaps-tables