South Dakota v. Wayfair, Inc., 585 U.S. ___ (2018), was a United States Supreme Court case that held by a 5–4 majority that states may charge tax on purchases made from out-of-state sellers even if the seller does not have a physical presence in the taxing state. The decision overturned Quill Corp. v. North Dakota (1992), which had held that the Dormant Commerce Clause barred states from compelling retailers to collect sales or use taxes in connection with mail order or Internet sales made to their residents unless those retailers have a physical presence in the taxing state.