cross-posted from Storify/Expatriation Law
In 1775 Lord Mansfield proclaimed “no country ever takes notice of the revenue laws of another.” In common parlance this means that the courts of one country will not enforce the tax laws of another country. It is articulated in the “The Conflict of Laws, Rule #3 , a standard English text by Dicey and Morris. It has been practiced in common law countries as well as civil law countries. However, the law itself can be said to promote tax evasion and for that reason, its supremacy begins to be challenged, especially through tax treaties. Vern Krishna, a law professor at University of Ottawa, explored this briefly in his paper
The Demise of the Revenue Rule.