HM Revenue & Customs (HMRC) is launching a significant crackdown on a widely used tax loophole among UK households, targeting high-net-worth individuals who benefit from inheritance tax (IHT) and capital gains tax (CGT) advantages.
Building on a regime known as Uncertain Tax Treatment (UTT), originally introduced in 2022 for large corporations, HMRC intends to extend this framework to private individuals receiving tax advantages of £5 million or more. Under this expanded regime, individuals must report their use of such tax advantages, allowing HMRC to investigate how they interpreted the applicable tax rules.
Previously, the UTT rules applied only to businesses with annual turnover exceeding £200 million and balance sheets over £2 billion. The new proposals would widen HMRC’s reach to cover additional taxes including stamp duty, National Insurance contributions, inheritance tax, and capital gains tax.
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Failure to notify HMRC of a qualifying tax advantage under the UTT can result in fines of £5,000, a penalty previously established for non-compliance by businesses.
The crackdown has sparked debate among tax experts. Fiona Fernie of Blick Rothenberg warns the move may appear to unfairly target wealthy individuals while neglecting other contributors to the tax gap. She describes the approach as potentially politically motivated rather than evidence-based, emphasizing a disconnect between who is responsible for most tax shortfalls and who HMRC is scrutinizing.
Jonathan Burt from Charles Russell Speechlys highlights the complexities inherent in tax areas like inheritance tax and stamp duty, where legal interpretations often remain unclear. He cautions that requiring individuals to self-report “uncertain” tax positions could force them to admit potential errors without definitive guidance from HMRC.
Ellen Milner, representing the Chartered Institute of Taxation, characterizes the proposals as a “significant widening” of the regime that may affect not only individuals but also trusts and multiple tax types. She underscores the importance of implementing these changes in a manner that is clear, fair, and practical. Milner also stresses a need for government and HMRC to reduce ambiguities in tax law through clearer legislation and guidance to minimize disputes over legal interpretation.
As HMRC moves to tighten enforcement, the expanded UTT framework aims to enhance transparency and accountability around complex tax arrangements, signaling a robust effort to close loopholes and increase tax compliance among the wealthy.