“It is possible, quite legally, to avoid paying tax on an income or gain,” is how the Court of Appeal begins its judgment on an intricate scheme used by a high roller to slash his tax bill. “Skilful tax practitioners spend considerable energy setting up elaborate schemes for the purpose of reducing, in a legally compliant manner, the tax a taxpayer will ultimately have to pay,” the 81-page ruling by Justices Aileen Donnelly and Nuala Butler continues.  But just how far can a person go to exploit the tax code for an advantage? In the case of serial media investor…