By Lori Ann LaRocco | CNBC | September 2, 2025

A federal appeals court delivered a major blow to former President Donald Trump’s signature trade war policies last Friday, ruling that many of his administration’s tariffs violate U.S. law. The decision introduces the possibility that billions of dollars in tariffs collected by the federal government from 2018 through 2025 could be subject to refund, deeply impacting both American businesses and global trade relations.

However, the practical effects remain on hold as a stay has been imposed until at least October 14, giving the Trump administration time to appeal to the Supreme Court. The decision prolongs the sense of uncertainty that has gripped importers and exporters across America’s supply chain and leaves open fundamental questions about future U.S. trade policy.

Background: Trump’s Tariff Strategy and Legal Challenge

During his presidency, Donald Trump dramatically escalated the use of tariffs—especially against China and other major trading partners. Relying on a sweeping interpretation of the 1977 International Emergency Economic Powers Act (IEEPA), he imposed reciprocal tariffs covering hundreds of billions in goods, including steel, aluminum, lumber, electronics, and consumer products. These duties fueled fierce trade disputes and led to retaliatory tariffs globally, affecting prices and supply chains.

Friday’s appellate court ruling struck down many of these tariffs, finding that the administration exceeded its legal authority under IEEPA. While the White House quickly vowed to seek an expedited Supreme Court review, the uncertainty has already sent shockwaves through logistics firms, manufacturers, and retailers relying on imported goods.

Immediate Impact: Industry Uncertainty and Business Calculus

For now, business leaders across the shipping and logistics sector are maintaining a cautious posture:

“Right now, we have not heard anything much or seen any changes,” said Paul Brashier, Vice President of Global Supply Chain at ITS Logistics. “Most shippers are awaiting the appeal to the U.S. Supreme Court and its final decision.”

This uncertainty is particularly acute for shippers and importers who front-loaded goods before anticipated tariff increases early in the year. Retailers and manufacturers rushed to build inventory, hoping to lock in lower duty rates; the stay on the court’s ruling means these strategies could still pay off in the short term. As Alan Baer, CEO of OL USA, noted, companies are managing mixed signals as product ordered months ago arrives in ports just as legal and policy winds shift in Washington.

The $800 de minimis exemption—which permitted many packages valued at or below $800 to enter the U.S. duty-free—ended on May 2, 2025. This led to a notable spike in lower-value shipments as companies rushed to take advantage of the loophole before stricter tariffs hit.

Financial Stakes: Billions Collected, Billions at Risk

The U.S. Treasury has aggressively collected tariff revenue throughout the Trump and post-Trump era. According to Treasury Department data, the federal government generated $142 billion in tariff revenue so far in this fiscal year alone, driven in large part by reciprocal tariffs on critical materials, electronics, and consumer goods from China, Mexico, Canada, and beyond. The monthly intake from tariffs has at times exceeded $30 billion, buttressing the federal budget but also raising prices for U.S. businesses and consumers.

If the Supreme Court upholds the lower court’s decision, the U.S. government may be forced to refund billions in collected duties dating to the original implementation of the tariffs. The logistics of such mass refunds remain murky. “Blanket refunds are fairly straightforward,” said Dan Anthony, President of Trade Partnership Worldwide. However, if the government opts for an individual request process, “it would make things infinitely more complex” and could impose a heavy administrative burden on importers and customs brokers.

Small businesses may face the most daunting challenges. Many use third-party logistics providers as the “importer of record,” meaning any refunds would go first to intermediaries, then filter down, potentially causing delays and bottlenecks for the main business recipients.

The Big Picture: Tariff Policy, Legal Limbo, and Business Planning

For now, the landscape remains clouded by legal uncertainty. Treasury Secretary Scott Bessent expressed confidence that the Supreme Court will ultimately uphold the tariffs on national security and emergency powers grounds, previewing a “Plan B” should the court rule otherwise. President Trump has called for expedited consideration, understanding that the court may not act before the October 14 stay expires, leaving importers and government revenue streams in limbo.

Trade experts warn shippers and businesses not to make hasty supply chain revamps based on possible Supreme Court rulings. “Companies should not be shifting their sourcing based on what they think the Supreme Court will say, it’s just too uncertain,” cautioned Josh Teitelbaum, senior counsel at Akin and former U.S. Commerce official.

Any formal court-mandated refund process would come as the U.S. continues to navigate tense trade relations with major partners. Tariffs remain in place on products from more than 90 countries, and the Harmonized Tariff System (HTS) covers nearly every conceivable import. Of the over 11,000 tariff classifications, only about 5% are exempt from Trump’s reciprocal tariffs, according to Michael Lowell, partner at Reed Smith.

The impact on federal budget deficit is likely to be significant if refunds move forward, according to Felicia Pullam, former Executive Director of the Office of Trade Relations at Customs and Border Protection. “The funds that CBP collects from tariffs go into the U.S. Treasury—they are not earmarked for anything,” she explained. “If they had to be refunded, it would contribute to the U.S. budget deficit and overall debt, just like most other kinds of federal spending.”

What Comes Next? Possible Scenarios

• Supreme Court Review: If the nation’s highest court takes up the case, a decision on the legitimacy of the tariffs and the structure of any refunds may not emerge until late 2025 or even 2026.
• Alternative Tariffs: Experts warn that even if current tariffs are overruled, the administration could move to reimpose similar measures under different statutory authorities, including “Section 232 Tariffs” on grounds of national security or commodity-specific duties targeting industries such as steel, aluminum, pharmaceuticals, and critical minerals.
• Congressional Action: The administration could seek special powers from Congress to temporarily maintain certain tariffs for several months, especially as the November elections approach. This would provide both leverage in global negotiations and continued tariff revenue for the Treasury.
• Administrative Challenges: If refunds are mandated, customs agencies and brokers will face an unprecedented administrative workload, with refund claims, documentation, and appeals likely to surge heading into year-end deadlines.

Senior Voices and Broader Economic Impact

Industry response remains split between cautious optimism for tariff relief and worry about ongoing volatility:

“Tariff volatility has become the new normal. Multiple Section 232 investigations are active—spanning lumber, pharma, furniture, aerospace, trucks, seafood, and critical minerals,” said Mike Short, President of Global Forwarding at C.H. Robinson, one of the world’s largest logistics firms.

Markets, meanwhile, are watching for signs of wider economic impact. Tariff costs have already filtered through to higher prices for raw materials and consumer goods. Sectors including retail, automotive, and manufacturing have tried to navigate uncertainties by diversifying supply chains, stockpiling inventory, and lobbying for exemptions.

Yet, most experts say a reversal of the tariffs, while disruptive for the Treasury and complicated for shippers, is unlikely to tank the broader U.S. economy. As Felicia Pullam noted, “It will not sink the economy. Claims to the contrary sound more like desperation.”

Conclusion: The New Era of Trade Uncertainty

Whether Trump’s trade war tariffs survive Supreme Court scrutiny or not, the U.S. business landscape has been indelibly altered. The past seven years have shown that tariff volatility—and the risk of legal reversals—are now fundamental features of global trade. Companies continue to strategize cautiously for the “what ifs,” bracing for either billions in refunds or the next wave of import duties. For now, the only constant in U.S. trade policy is uncertainty.