South Dakota v. Wayfair

138 S. Ct. 2080 · Decided June 21, 2018 · Supreme Court of the United States

At a glance

South Dakota v. Wayfair was decided on June 21, 2018 by a vote of 5–4. The Court vacated the lower court's decision and remanded the case. Justice Anthony M. Kennedy wrote the opinion of the Court. SCDB classifies its main issue as “State or local government tax” in the Economic Activity area. SCDB codes this decision as formally altering one or more of the Court's own precedents.

Read the opinion

• CourtListener (Free Law Project) — opinion text
• Supreme Court of the United States — slip opinions, October Term 2017
• Supreme Court of the United States — docket 17-494

Case details

How the Justices voted

Full case caption

South Dakota v. Wayfair

SCDB identifiers: case 2017-059, docket 2017-059-01.

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Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error