26
Deferred
HMRC published new estimates for wealthy and offshore tax gaps, totalling £300 million.
Conclusion
HMRC is one of few tax administrations that publishes an annual estimate of the amount of tax revenue lost to wealthy individuals. It estimated this wealthy tax gap to be £1.9 billion in 2022–23, or 0.2% of all taxes owed. It uses its estimates as an indicator of its long-term performance and to provide insight into where to focus its compliance activity. In October 2024 HMRC published its first estimate of the amount of undeclared tax from income held in offshore accounts, a form of offshore non-compliance. HMRC estimated that, in 2018–19, £300 million in tax was lost due to UK residents failing to disclose their foreign income from some accounts held in the countries which automatically exchanged account information with the UK in 2017 and 2018.49
Government Response Summary
The government agrees with the item and states HMRC is scoping work to better understand the contribution of wealthy individuals to the tax gap, reviewing current estimates, and will provide an update on progress by Autumn 2026.
Government Response
Deferred
Government Response
Deferred
HM Government
Deferred
6.3 The government agrees with the Committee’s recommendation. Target implementation date: Autumn 2026 6.4 HMRC recognises the importance of understanding the contribution of the wealthiest individuals to the overall tax gap and is committed to improving its tax gap estimates. Understanding the tax risks linked with wealthy individuals presents challenges, given the complexity of their tax affairs, which may present additional opportunities for non-compliance. 6.5 As part of its ongoing analytical work, HMRC is scoping work to better understand the contribution of wealthy individuals and the entities they control to the overall tax gap. This will involve reviewing the scope of current estimates to determine whether and how the contribution of wealthy individuals and their controlled entities can be more accurately captured. 6.6 HMRC will write to the Committee in Autumn 2026 updating on its progress in improving the estimate of the wealthy tax gap.
Source
Committee
Public Accounts Committee
Report
40th Report - Collecting the right tax from wealthy individuals
16 Jul 2025
HC 827
Addressee Bodies
HM Treasury
Timeline
Recommendation age
1.0 yr
Report published
16 Jul 2025