US Supreme Court overturns IEEPA tariffs, impacting billions in refunds

In a groundbreaking decision on February 20, 2026, the U.S. Supreme Court ruled 6–3 in Learning Resources, Inc. v. Trump that the International Emergency Economic Powers Act (IEEPA) does not grant the president the authority to impose tariffs. This ruling invalidates tariffs introduced under IEEPA, including the widely contested "fentanyl" tariffs imposed on Canada, Mexico, and China, as well as broader "reciprocal" tariffs that targeted numerous other trading partners. The decision dismantles a significant pillar of the previous administration’s trade policy and has enormous financial implications for U.S. importers.

A Historic Opportunity for Tariff Refunds

According to a declaration filed by U.S. Customs and Border Protection (CBP) with the U.S. Court of International Trade, more than 333,000 importers paid approximately $166 billion in duties under the now-overturned IEEPA tariffs. This decision sets the stage for a massive recovery effort, as businesses seek refunds for duties they were required to pay under the invalidated tariffs.

However, recovering these funds will not be an automatic process. While the Supreme Court’s ruling declared the tariffs unlawful, it did not establish a mechanism for returning the collected duties. Importers will need to navigate an administrative refund process managed by CBP, which involves filing documentation and following specific procedures. As the source article notes, "even landmark legal victories can leave complex operational work ahead for companies in global trade."

sbb-itb-c0b8770

Why the Court Ruled Against IEEPA Tariffs

The IEEPA was originally designed to grant U.S. presidents broad powers to regulate economic transactions during national emergencies, particularly for the purpose of imposing sanctions or financial restrictions. However, the Supreme Court differentiated between regulating trade and taxing it, concluding that the IEEPA does not authorize the imposition of tariffs. Because tariffs function as taxation, the Court determined that the administration had exceeded the legal authority granted by IEEPA.

This decision removes the legal justification for the billions of dollars collected under these tariffs. However, importers must still take proactive steps to recover funds paid, as there is no automatic refund system in place.

CBP Faces Operational Challenges in Refund Processing

On March 4, 2026, the U.S. Court of International Trade ordered CBP to liquidate or re-liquidate certain import entries without the now-invalid IEEPA tariffs. While this ruling could ease the path for many importers to receive refunds, the process is far from straightforward. CBP has reported significant technical and operational hurdles, including complications with its Automated Commercial Environment (ACE) system, which is not designed to separate IEEPA duties from other tariffs.

CBP informed the court that recalculating refunds manually could require an estimated 4.4 million labor hours. Additionally, more than 7,700 refund attempts have already failed due to importers not enrolling in the electronic Automated Clearinghouse (ACH) refund system, which replaced paper checks earlier this year. The court has given CBP 45 days to develop system updates to automate the process through ACE, but refunded amounts are unlikely to be processed quickly.

Key Steps for Importers Seeking Refunds

For importers seeking to recover duties paid under IEEPA tariffs, eligibility hinges on several factors, including the timing of imports and the administrative status of their entries:

1. Importer of Record (IOR): Only the party listed as the Importer of Record on CBP Form 7501 is eligible to file refund claims.
2. Applicable Tariffs: Refund eligibility applies only to entries assessed duties under IEEPA tariff lines, such as those with HTSUS codes in the 9903.01.XX and 9903.02.XX ranges. Tariffs imposed under other authorities, such as Section 301, Section 232, and Section 122, remain unaffected and are not eligible for refunds.
3. Entry Timing: Refunds are limited to shipments that entered the U.S. from early 2025, when the IEEPA tariffs were imposed, until February 24, 2026, when they were terminated.

Refund claims must be supported by detailed documentation, including entry summaries, duty payment records, and tariff classifications. Depending on whether entries are unliquidated, liquidated, or beyond the protest window, importers will need to pursue different filing processes, such as Post Summary Corrections (PSC) or CBP Protests.

Broader Implications for Trade Policy

Though the Supreme Court’s ruling on IEEPA tariffs represents a major shift, it does not eliminate other tariff risks. Policymakers still have authority under programs like Section 301 and Section 232, which have been used extensively in recent years. Importers should remain vigilant as trade policies continue to evolve.

As global trade rules become increasingly complex, businesses must ensure they have visibility into duties, taxes, and compliance requirements across all markets they operate in. For now, the IEEPA decision marks a significant, though administratively challenging, opportunity for affected importers to recover billions of dollars in tariff refunds.

Read the source