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HMRC Powers: More Than Just Tax and Penalties

Shared from Tax Insider: HMRC Powers: More Than Just Tax and Penalties
By Lee Sharpe, November 2025

Lee Sharpe warns that HMRC is amassing several sanction powers which are more troubling than some may realise. 

Traditionally, enquiry amendments and tax penalties are treated as civil cases; in other words, not only is HMRC supposed to remain polite, but the legislation focuses primarily on a financial reckoning (assessment) and punishment (penalty).  

Put another way, HMRC is mostly about the money: tax, interest and penalties. 

Weapons in HMRC’s armoury  

Broadly, the closest that even the naughtiest taxpayers will have come to a criminal sanction is to risk a ‘COP 9’ investigation, where HMRC formally tells the individual taxpayer, under Code of Practice 9 (aka its contractual disclosure facility), that they are suspected of serious tax fraud, but HMRC will nevertheless offer immunity from

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