Washington—Warehouse giant Costco has filed a lawsuit against the U.S. government, seeking to guarantee its right to receive refunds for billions of dollars in tariffs, should the Supreme Court strike down the President’s authority to impose them.
Thank you for reading this post, don't forget to subscribe!The Core Legal Dispute
The case centers on tariffs imposed using the International Emergency Economic Powers Act (IEEPA). The Supreme Court is currently reviewing whether the President legally used this 1977 law for tariff imposition. During oral arguments on November 5, justices across the political spectrum expressed skepticism about the administration’s use of the emergency powers.
Costco’s Action
Filing a complaint in the U.S. Court of International Trade in Manhattan, Costco stated that the use of IEEPA creates uncertainty about businesses’ ability to recoup overpaid sums. Costco specifically noted that the U.S. Customs and Border Protection denied its request for more time to finalize tariff calculations, a move the company says threatens its ability to obtain a complete refund if the Supreme Court rules in its favor.
Costco, which reported $275.2 billion in revenue in its last fiscal year, is among dozens of major companies, including Ray-Ban maker EssilorLuxottica, Revlon, Kawasaki Motors, and Bumble Bee Foods, taking preemptive legal action to safeguard potential refunds.
Company Response
While waiting for the Supreme Court’s ruling, Costco has already employed several strategies to address the tariff burden, such as:
- Reducing the number of foreign suppliers.
- Increasing reliance on local sourcing.
- Promoting its in-house Kirkland brand.
The Supreme Court has not announced when it will issue its decision.

















