Companies sue for refunds after Trump's tariffs deemed illegal

The Supreme Court ruled on February 20 that tariffs imposed under the International Emergency Economic Powers Act are illegal. Customs and Border Protection had collected more than $129 billion in IEEPA tariff revenue as of December 10, and the court did not order refunds; several major firms have since sued to recover duties they paid.

Costco sued in December 2025 seeking a "full refund," arguing IEEPA never authorized tariffs and warning many entries could enter liquidation as soon as mid-December. Toyota subsidiaries filed in November 2025 to block imminent liquidations by January 31, 2026 and to preserve their right to full refunds; automakers have been among the most exposed, and Toyota said higher rates could cost about $1.3 billion over a two-month period.

BYD filed on February 9, asking for refunds of "all IEEPA tariffs paid to date" and those that may be paid in the future, and said imports from China, Canada, Germany, Mexico, and Poland were affected.

United States

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