Supreme Court Tariff Ruling Could Mean Billions in Refunds for Importers

Publish Date : 03/04/2026

A recent U.S. Supreme Court decision could open the door for billions of dollars in tariff refunds for American importers.

On February 20, 2026, the Supreme Court issued a landmark ruling in Learning Resources, Inc. v. Trump. In a 6–3 decision, the Court held the International Emergency Economic Powers Act (IEEPA) does not authorize the President to impose tariffs. This ruling invalidated the sweeping “reciprocal” tariffs and fentanyl-related duties implemented in 2025.

For businesses that paid those tariffs, the decision could have enormous financial consequences.

Economic analysts estimate more than $175 billion in tariffs may now be subject to reimbursement for duties collected since early 2025.

How Businesses May Recover Tariff Payments

Companies seeking refunds will likely need to pursue claims before the United States Court of International Trade (CIT), the federal court with exclusive jurisdiction over customs and international trade disputes.

The CIT has already recognized its authority to order refunds of unlawfully collected duties. In AGS Co. Automotive Solutions v. U.S. Customs and Border Protection (Dec. 2025), the court confirmed it can order the reliquidation of entries and reimbursement of improper tariffs.

Prior to the Supreme Court ruling, the CIT stayed thousands of related cases while the legality of the tariffs was being decided. More than 2,000 cases have already been filed, including protective filings by many large importers.

Those cases are expected to move forward as the court establishes procedures for handling refund claims under its jurisdiction.

Acting Quickly May Be Critical

The federal government has indicated refunds may require formal litigation rather than voluntary administrative reimbursement.

At the same time, strict deadlines may apply to:

• Customs protests
• Reliquidation requests
• New court filings

This makes it essential for importers to evaluate their rights quickly to avoid missing key deadlines.

How McSweeney Langevin Can Help

Attorneys at McSweeney Langevin, LLC admitted before the Court of International Trade are prepared to help businesses pursue tariff refunds by:

• Filing or amending complaints to seek refunds with interest
• Navigating potential consolidated proceedings and case management orders
• Seeking expedited relief where appropriate
• Advising importers on how to preserve refund rights

“Importers who paid these now-invalid tariffs should not bear the burden of prolonged delays or resistance,” said Rhett McSweeney, Chair of the firm’s Trade Practice. “The Court of International Trade provides a clear path to reimbursement, but acting promptly with knowledgeable counsel is critical.”

Importers May Be Entitled to Significant Refunds

Businesses affected by the invalidated IEEPA tariffs, including those that filed protective actions in 2025 or are considering new claims, should evaluate their options now.

The potential recovery may be significant, and timing may be critical to preserving your rights.

Contact McSweeney Langevin

If your company paid tariffs under the invalidated program, McSweeney Langevin is available to evaluate your claim and help pursue reimbursement.