The US Court of International Trade certified a class of importers this week, opening a single procedural track that, in the court's words, seeks to "ensure all businesses that paid the illegal levies receive reimbursements."

The certification converts separate challenges into a class action. Affected importers will share one ruling rather than file thousands of individual suits to recover duties collected under the International Emergency Economic Powers Act (IEEPA).

What does the certification change?

Class certification confirms that common legal questions dominate the dispute and that representative plaintiffs can litigate on behalf of the broader group. For importers, the practical effect is straightforward: a single court order, once final, can trigger systematic refunds rather than piecemeal recovery.

The mechanism runs through US Customs and Border Protection, which collected the duties at the port of entry. Refunds depend on a final judgment against the government and on Customs' ability to administer repayment by importer entry across the affected trade lanes.

Importers — and the customs brokers, freight forwarders and carriers that filed entries on their behalf — now operate inside a defined legal track. Documentation tied to those entries will feed any subsequent repayment process.

Why the duties were challenged as unlawful

Importers argued the levies exceeded the statutory authority of IEEPA. The tariffs became a flashpoint in trade policy and the subject of multiple federal challenges. The characterization of the duties as "illegal levies" reflects the legal posture plaintiffs have taken throughout: that the duties were collected without proper statutory grounding and should be returned to those who paid them.

What it means for shippers, brokers and forwarders

• The class action streamlines refund claims across every importer that paid the duties, removing the requirement for tens of thousands of individual suits.
• US Customs and Border Protection administers any repayments, working from existing entry records maintained at the port level.
• Refunds, if they flow, offset landed-cost increases that importers absorbed during the levy period — directly through brokerage entries and indirectly through surcharges many forwarders added to freight invoices.
• Operational priority shifts to record retention: importers need clean entry summaries, duty payment records and proof of pass-through to support any final refund distribution.
• Carriers and forwarders that documented the duties as a separate line item on their invoices face renewed scrutiny from importer clients tracking reimbursements.

The class decision also reaches beyond importers. Lenders that financed inventory under inflated landed-cost assumptions, and consignees that paid duty on behalf of beneficial cargo owners, will need to track the outcome as well.

What happens next

The court will set a schedule to advance the litigation. Refunds hinge on a final judgment in the class action and on Customs' ability to allocate duty records by entry across the affected trade lanes. The case now moves toward resolution on a defined timetable.