Shubhankar Dam, professor of public law and governance at University of Portsmouth, England, says that the judgment makes it clear that states have a concurrent power to legislate on tax. “Of course, by definition, states have the jurisdiction to tax only intrastate trade and commerce. But the idea that this was always clear that states can (legislate if they wanted to) is incorrect. The Union has always categorically held that states do not have the power. The Union has argued before the court that recommendations of the Council are binding and if they are binding, then, by definition, the states do not have the power to deviate from what the council says,” says Dam, adding it is now clear that that they have the same power on tax legislation matters as much as the Union does.