Legal interpretation causes jump in tax gap Lena Angvik October 31 2017 X LinkedIn Email Show more sharing options Copy Link URLCopied! Print X LinkedIn Email HMRC believes taxpayers have underpaid £6 billion in taxes due to legal interpretation, which could be caused by uncertainty over new rules, advisers say. Unlock this content. The content you are trying to view is exclusive to our subscribers. To unlock this content: Take a Free Trial or Login