Moments ago, the US Supreme Court issued its highly-anticipated decision in South Dakota v. Wayfair, Inc., et al., No. 17-494. The 5-4 opinion was authored by Justice Kennedy and concluded that the physical presence requirement established by the Court in its 1967 National Bellas Hess decision and reaffirmed in 1992 in Quill is “unsound

Retroactivity is an endemic problem in the state tax world.  In this year alone, we have seen retroactive repeal of the Multistate Tax Compact (MTC) in Michigan, as well as significant retroactivity issues in New York, New Jersey and Virginia.  But after decades of states changing the rules on taxpayers after-the-fact, relief

Over the past decade we have seen a large increase in the number of third party tax enforcement claims against retailers involving transaction taxes (see Multistate Tax Commission Memorandum regarding survey of class action refund claims and false action claims, dated July 12, 2013, describing such actions).  The lawsuits typically are brought either as