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HMRC's Powers on Tax Return Errors: Not As Broad As They Seem

Shared from Tax Insider: HMRC's Powers on Tax Return Errors: Not As Broad As They Seem
By Mark McLaughlin, September 2026

Mark McLaughlin highlights an important case which indicates a limitation in the scope of certain HMRC powers. 

Tax return errors by individuals are not uncommon but unfortunately can have serious consequences. 

For example, HM Revenue and Customs (HMRC) can impose penalties for inaccuracies in tax returns. The level of penalty broadly depends on whether the inaccuracy was ‘careless’ or ‘deliberate but not concealed’ or ‘deliberate and concealed’, subject to reductions based on the degree to which the person discloses the inaccuracy to HMRC.  

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