South Dakota taxes the retail sales of goods and services in the State. Sellers are required to collect and remit the tax to the State, but if they do not then in-state consumers are responsible for paying a use tax at the same rate. Under prior decisions, South Dakota may not require a business that has no physical presence in the State to collect its sales tax. Consumer compliance rates are notoriously low, and it is estimated that those decisions cause South Dakota to lose between $48 and $58 million annually.
Concerned about the erosion of its sales tax base and corresponding loss of critical funding for state and local services, the South Dakota Legislature enacted a law requiring out-of-state sellers to collect and remit sales tax as if the seller had a physical presence in the State. The Act covers only sellers that, on an annual basis, deliver more than $100,000 of goods or services into the State or engage in 200 or more separate transactions for the delivery of goods or services into the State.
Respondents Wayfair, Inc., Overstock.com, Inc., and Newegg, Inc. are merchants with no employees or real estate in South Dakota. Wayfair, Inc. is a leading online retailer of home goods and furniture and had net revenues of over $4.7 billion last year. Overstock.com, Inc. is one of the top online retailers in the United States and had net revenues of over $1.7 billion last year. Newegg, Inc. is a major online retailer of consumer electronics in the United States. Each of these three companies ships its goods directly to purchasers throughout the United States, including South Dakota. Each easily meets the minimum sales or transactions requirement of the Act, but none collects South Dakota sales tax.
Pursuant to the Act’s provisions for expeditious judicial review, South Dakota filed a declaratory judgment action against respondents in state court, seeking a declaration that the requirements of the Act are valid and applicable to respondents and an injunction requiring respondents to register for licenses to collect and remit the sales tax. Respondents moved for summary judgment, arguing that the Act is unconstitutional. The trial court granted their motion. The South Dakota Supreme Court affirmed on the ground that Quill is controlling precedent. This Court granted certiorari. The case was argued on April 17, 2018, and decided on June 21, 2018.
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