South Dakota Nexus Law Held Invalid in Violation of Quill
Like many states, South Dakota recently enacted an aggressive sales and use tax nexus statute requiring certain out-of-state retailers with no physical presence in South Dakota to collect and remit tax on sales made to South Dakota residents. In an effort to collect a portion of the tax revenue that the South Dakota legislature considered "lost" to internet sellers located outside the state, this statute seeks to impose a tax collection obligation based on economic rather than physical presence factors.
Challenge to the South Dakota "Economic" Nexus Law
The lead case in the declaratory judgment litigation regarding the validity of the South Dakota law is South Dakota v Wayfair, et al. In its brief to the South Dakota Supreme Court, the State of South Dakota conceded that the new law had no physical presence requirement and, therefore, was contrary to the U.S. Supreme Court decisions in National Bellas Hess v Illinois and Quill v North Dakota. Unsurprisingly, the South Dakota Supreme Court adhered to these binding Supreme Court precedents and found the South Dakota law unconstitutional.
South Dakota Efforts to Reverse Quill
The objective underlying South Dakota's enactment of such an aggressive economic nexus statute and the subsequent pursuit of a rapid State Supreme Court decision appears to be U.S. Supreme Court review and reversal of Quill. In 1992, Quill established the current physical presence requirement applicable to out-of-state sellers with regard to sales and use tax collection obligations. The South Dakota legislature, like many state tax commentators, appears to believe that the U.S. Supreme Court will accept an appeal of Wayfair and seize the opportunity to reverse Quill. Proponents of this belief often cite Justice Kennedy's concurring opinion in Direct Marketing Ass'n v Brohl, which suggested that the Court should reconsider its decision in Quill and needed only "an appropriate case" in which to do so.
Quill Reversal is Far from Certain
Despite Justice Kennedy's criticism of Quill, it is unclear whether South Dakota and like-minded commentators are correct. Justice Kennedy's concurrence was not joined by any of the other eight justices, and the plain language from the majority opinion in Quill notes that:
Congress has the power to protect interstate commerce from intolerable or even undesirable burdens. Commonwealth Edison Co. v. Montana, 453 U.S. 609, 637 (1981) (White, J., concurring). In this situation, it may be that "the better part of both wisdom and valor is to respect the judgment of the other branches of the Government."
Indeed, Justice Scalia's Quill concurrence recognized that Congress has the power to regulate interstate commerce and could counteract National Bellas Hess (and implicitly, Quill) if it desires a different result. The corollary to this commerce clause power, known as the dormant commerce clause, is seen as a prohibition against state action restricting interstate commerce. Although the Quill decision is largely attributable to the dormant commerce clause, assuming that the Supreme Court must respond to the changing circumstances of the internet economy by reversing precedent is arguably an oversimplification. The Supreme Court may very well choose – as it has since 1992 - to abstain from further involvement in the matter and defer to the nation's elected officials.
United States Supreme Court Review and State Actions
Whether the Supreme Court will grant certiorari and consider the South Dakota case is a matter of pure discretion. Although the economy certainly has changed significantly since 1992, the Court's decision in the current conflict will necessarily be colored by its decisions in National Bellas Hess and Quill, and the principle of Stare Decisis, which generally requires respect for prior decisions of the Court. Thus, taxpayers must remain prepared for the possibility that the Supreme Court may not review Wayfair, and that there may be no federal legislative enactment; and in such a case, taxpayers will remain subject to varying and uncertain tax collection obligations across the states in which they do business.
Taxpayers with multi-state sales and use tax issues may contact the authors of this alert with any questions.
State of South Dakota v Wayfair Inc, Overstock.com Inc & Newegg, Inc, 2017 SD 56 (2017).
 386 US 753 (1967).
 504 US 298 (1992).
 135 S Ct 1124 (2015).