The sunset of de minimis: The policy no one talked about — until it was gone

Key takeaways:

• • • The 2027 end date is not a runway — The One Big Beautiful Bill sets a statutory de minimis end date of July 1, 2027, but its own legislative history explicitly preserves the president’s authority to restrict it before that date. Sellers banking on a two-year transition period are reading the headline, not the fine print.

    • The Supreme Court win didn’t save the refunds — The Supreme Court’s IEEPA decision was real, but the administration switched legal authority to Section 1321 and kept the suspension running. Combined with congressional cover from the One Big Beautiful Bill, the path to recovering tariffs already paid is genuinely uncertain — not just delayed.

    • The refund clock just reset — The lead test case for processing refunds through CBP’s KAPE system, Atmos, just settled, forcing the process to restart with a new test case. Sellers waiting on refunds are further back in the queue than they realize.

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Most e-commerce merchants couldn’t have told you what de minimis meant two years ago — mostly because they didn’t need to. It was the invisible infrastructure of cross-border trade, the threshold below which imported goods pass through customs without duties or taxes. And in the United States, that threshold sat at $800. For small online sellers sourcing internationally, it wasn’t a technicality — it was their business model. Now, that model is over.

De minimis was deliberate trade policy built on simple logic: the cost of collecting duties on a $25 phone case exceeds the revenue it generates. Let low-value goods flow freely, the thinking went, and e-commerce would grow — and it did.

The Trump administration’s first moves targeted Canada, Mexico, and China on fentanyl-related grounds. Then came Executive Order 14324, suspending duty-free de minimis for all countries effective August 29, 2025. Sellers who had never filed a customs entry suddenly had to file informal entries for goods valued up to $2,500 — and pay tariffs on every single one. Last count, that has meant $175 billion in tariffs paid annually, with small shipments accounting for roughly 63% of that.

The legal basis for Trump’s tariffs — the International Emergency Economic Powers Act (IEEPA) — went to the Supreme Court, which constrained presidential authority to pass these tariffs. Many sellers took that as a signal that tariff refunds were coming — they shouldn’t have.

Then came the legislative layer that changed everything. The One Big Beautiful Bill Act (OBBBA) — H.R. 1, now law — codifies the end of de minimis under Title 19 with a statutory end date of July 1, 2027. Buried in the legislative history, however, is language explicitly stating that nothing in the bill limits the president’s existing authority to restrict de minimis before that date. The current suspension has congressional cover, meaning that any court challenge faces a much tighter call than it would have had a year ago.

What most sellers are getting wrong

What’s making matters worse, however, is that many small e-commerce merchants may not fully understand all the nuances of the laws and regulations they are trying to navigate. Indeed, there are certain aspects of the situation that many are getting wrong, including:

The 2027 date is a headline, not a lifeline — When the ne Big Beautiful Bill passed with a July 1, 2027, statutory end date for de minimis, many sellers assumed they had a transition period — time to adjust pricing, renegotiate supplier terms, and build a compliance infrastructure. Buried in House Report 119-106, however, is language explicitly stating that nothing in the bill limits the president’s existing authority to restrict de minimis before that date. Congress didn’t create breathing room; rather, it codified the end while leaving the accelerator fully intact. The 2027 date is when de minimis ends by law. Indeed, it could end sooner — and effectively already has.

The Supreme Court decision didn’t unlock refunds — The Court’s IEEPA ruling was significant, but the administration’s response was swift: Executive Order 14388 reimposed the suspension of tariffs under Section 1321 authority as of February 24. The tariff meter never stopped; and now, with the OBBBA’s legislative history providing congressional cover, the Axle of Dearborn case — which specifically addresses whether sellers are entitled to refunds in the de minimis context — faces a much harder statutory construction argument than it would have a year ago. This may mean that the Supreme Court win was a legal victory that may not translate into money back.

The refund process just lost its test case — For sellers hoping to recover duties paid, the most practical path was through the KAPE system run by the U.S. Customs and Border Protection (CBP) — a workaround allowing refund claims to feed directly into an ACE Secure Data Portal account for verification. The lead case proving out that process, Atmus Filtration, Inc. v. US, just settled. Now, the trade legal community has to start over with a new test case, and nobody knows how long that is going to take. Sellers who filed protests rather than complaints at the Court of International Trade (CIT) are in a particularly difficult position — protests have time limits, and the CBP is under court order to re-liquidate open ones. Which legal bucket your entries fall into matters enormously right now.

The bottom line

The de minimis era enabled a generation of small merchants to compete globally on terms that would have been unimaginable 20 years ago. Its sunset doesn’t mean the end of cross-border e-commerce — but it does mean the end of operating on assumptions. The 2027 date, the Supreme Court decision, the refund process — each looked like relief and turned out to be more complicated than the headline suggested.

E-commerce merchants impacted by these de minimis developments need to talk to a trade attorney — not for the basics, but to understand where your claims stand, whether your protest strategy is still viable, and what the Atmus settlement means for you.

The storm isn’t over — and it may be more complicated than most sellers have been told.

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For more on this, please tune into the Thomson Reuters Institute’s recent “Clarity” podcast, featuring a discussion with Marianne Rowden, CEO of the eMerchant Trade Council, about the challenges facing small e-commerce merchants today