Overview
- A federal class action filed in Illinois by customer Matthew Stockov asks the court to bar Costco from keeping any government reimbursements tied to the voided 2025 tariffs and to return those sums to shoppers.
- Plaintiffs argue the retailer would otherwise enjoy a double recovery, claiming customers bore higher prices that reflected the illegal duties.
- The Supreme Court struck down the 2025 tariffs as an improper use of emergency powers, and trade courts are working on reimbursement mechanics, with exposure estimates around $166 billion to $175 billion.
- Costco has not pledged direct cash refunds; CEO Ron Vachris said the company would seek to return value to members through lower prices or improved offers if reimbursements arrive.
- Parallel litigation is accelerating, with thousands of companies suing the federal government for refunds and additional consumer suits targeting firms such as FedEx, UPS and EssilorLuxottica over alleged pass‑through charges.