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Costco Faces Class Action Lawsuit Over Tariff Refunds

3/31/2026, 5:18:51 AM

Allegations of Unjust Enrichment

A proposed class action lawsuit has been filed against Costco Wholesale Corp. in the U.S. District Court for the Western District of Washington, accusing the retailer of retaining financial benefits from federal tariffs that were recently deemed unlawful by the U.S. Supreme Court. The lawsuit, initiated by seven plaintiffs from Washington, Ohio, California, and Pennsylvania, claims that Costco raised prices on imported goods to offset the costs of tariffs imposed by the Trump administration under the International Emergency Economic Powers Act (IEEPA) starting in February 2025.

The plaintiffs argue that while they paid inflated prices during the tariff period, Costco is now eligible to reclaim those same costs from the federal government following the Supreme Court's ruling on February 20, 2026, which declared the tariffs unlawful. They contend that this situation allows Costco to profit twice: once from customers who absorbed the higher prices and again from government refunds.

CEO's Response and Pricing Strategy

Costco's Chief Executive Officer, Ron Vachris, has indicated that any potential refunds from the tariffs would be utilized to lower prices and enhance value for customers in the future. However, the lawsuit asserts that this approach fails to compensate the specific customers who were financially impacted during the tariff period. The plaintiffs emphasize that the refunds should be directed to those who initially bore the cost, rather than benefiting a general group of future shoppers.

The complaint cites evidence from Costco's earnings calls, where the company acknowledged that tariffs were influencing its pricing strategies. Furthermore, it notes that Costco reduced prices on certain items once the tariff pressure subsided, suggesting a direct correlation between the tariffs and the elevated costs paid by customers.

Scope of the Class Action

If successful, the lawsuit could encompass any customers across the United States who purchased goods subject to the IEEPA tariffs at Costco between February 1, 2025, and February 24, 2026. The claims include unjust enrichment, money had and received, and violations of the Washington Consumer Protection Act.

Official Statements & Responses

As of now, Costco has not issued a formal comment regarding the pending litigation. The Independent has reached out to the company for further clarification on its stance.

Criticism & Opposition

Critics of Costco's pricing strategy argue that the retailer's approach to handling tariff refunds is inadequate and unfair to those who were directly affected by the price increases. They contend that the lack of a commitment to refund the specific customers undermines the principles of consumer protection and accountability.

Conflicting Reports & Gaps

While the lawsuit presents a clear narrative of unjust enrichment, there is no available information on Costco's potential legal defenses or counterclaims regarding the allegations. Additionally, the extent of the financial impact on the plaintiffs and the overall class remains unspecified.

Verbatim Quotes

  • “Lawyers for the plaintiffs argue that Costco now stands to collect the same money twice — once from the customers who paid inflated prices at the checkout and a second time via government refunds.” — Plaintiffs’ Legal Counsel
  • “Chief Executive Ron Vachris previously told analysts that any potential tariff refunds would be used to provide lower prices and better value for customers in the future.” — Ron Vachris, CEO of Costco