In this month's Taxcast we look at the booming business of passports and residency for sale, and why it should worry us all. Also, even the IMF now advocates wealth taxes to combat inequality, yet governments around the world – most recently President Macron of France – are going in the opposite direction despite all the evidence that it's a bad idea, we discuss how Russia and the US are now world leaders in inequality and the good news that the European Commission has ordered Luxembourg to claim back $293 million in taxes from Amazon in another ruling on illegal state aid.