Governments at all levels – federal, state and local – are suffering through ever more severe budget crises. The interests of these different levels of government are often assumed to be in conflict. For instance, it seems reasonable to believe that if the federal government were to get its...

This is the second of a series of essays wherein we analyze the U.S. Supreme Court's decision in South Dakota v. Wayfair. In this essay, we address issues related to sales tax formalism and income tax nexus

A centerpiece of the 2017 federal tax legislation's reforms to international corporate income tax rules is the new global intangible low-taxed income regime (or GILTI). In a prior essay, we argued that U.S. state governments should conform to GILTI. But might there be constitutional restrictions...

The Supreme Court is currently considering whether it will accept original jurisdiction over New Hampshire v. Massachusetts. At issue is the State of New Hampshire’s (and its amici’s) claim that Massachusetts’s insistence on applying its income tax to residents of New Hampshire, who once...