The phrase "tariff refund litigation" suggests, to the uninitiated, a single courtroom proceeding. In practice, it is a sequenced administrative-to-judicial pipeline, governed by statutes enacted between 1930 and 1980, administered by an agency whose information systems were designed before the modern web, and adjudicated by a federal court that many lawyers could not locate on a map. The sequence matters, because at nearly every stage the importer must take a specific action by a specific deadline or the right to recover is extinguished. Missing one step does not slow the process. It ends it.
What follows is the process as it actually operates in 2026, in the aftermath of the Supreme Court's Learning Resources decision and the Court of International Trade's consolidating refund orders. We have numbered the stages for reference. Readers pursuing specific entries should work through each stage with counsel — the statutory citations are accurate; the strategic choices at each stage are not one-size-fits-all.
The Process, Numbered
Entry and Estimated Duty Deposit
An importer of record, typically through a licensed customs broker, files an entry summary (CBP Form 7501) declaring the merchandise, classification under the Harmonized Tariff Schedule, valuation, and country of origin. Estimated duties — including, during the IEEPA period, the disputed IEEPA duties — are deposited at this stage. This is the moment at which the money leaves the importer's account. It is also the moment from which most downstream deadlines are measured.
CBP Review and Liquidation
CBP reviews entries and, typically within 314 days, liquidates them — the statutory term for finalizing the amount of duty owed. Before liquidation, an entry is "unliquidated"; duties remain provisional. After liquidation, the assessment becomes CBP's final administrative determination, subject only to protest, voluntary reliquidation, or judicial challenge.
The Protest Window Opens — 180 Days
Under 19 U.S.C. § 1514, an importer has 180 days from the date of liquidation to file a written protest with CBP challenging the classification, valuation, or assessment of duties. This window is jurisdictional. Protests filed on day 181 are not late; they are invalid. A substantial share of IEEPA refund claims will turn on whether importers filed timely protests during 2025 and early 2026 — before the Supreme Court's ruling clarified that IEEPA duties were unlawful.
Voluntary Reliquidation — The First 90 Days
Parallel to the protest window, 19 U.S.C. § 1501 gives CBP authority to voluntarily reliquidate an entry within 90 days of original liquidation. CBP's Phase 1 rollout relies on this authority for a meaningful share of entries that fall within the 90-day window, allowing refunds to issue administratively without a protest at all. Entries outside the 90-day voluntary-reliquidation window but within the 180-day protest window will generally require a protest filing.
Protest Denial — and the Clock Starts Again
If CBP denies the protest, the denial letter triggers a second 180-day window: the importer has 180 days from denial to commence an action at the U.S. Court of International Trade under 28 U.S.C. § 1581(a). Historically, the protest-and-denial sequence was the mandatory prerequisite to CIT jurisdiction for most refund actions. In December 2025, during the pendency of Learning Resources, the CIT held that importers challenging the legality of the tariffs themselves (as opposed to technical assessment) did not have to exhaust protest procedures first. That exception narrowed materially once the Supreme Court's decision became final on March 17, 2026.
Filing the CIT Summons and Complaint
The CIT action commences with a summons and, depending on the subsection of § 1581 invoked, a contemporaneous or subsequent complaint. The summons identifies the protested entries and the denial; the complaint pleads the legal theories for refund. The filing fee is modest (currently $420); the procedural bar to appearance is not — lead counsel must be admitted to the CIT bar under USCIT Rule 74.
Government Answer and Motion Practice
The Department of Justice, through the Civil Division's International Trade Field Office, answers the complaint. In the ordinary course, the parties exchange discovery, file motions for summary judgment on cross-motions for summary judgment, and proceed to trial on stipulated records or limited factual hearings. For IEEPA refund cases specifically, Judge Eaton has adopted an expedited posture: many such cases are now administratively stayed pending resolution of lead-case orders, rather than litigated to judgment individually.
Consolidation Before Judge Eaton
The Chief Judge of the CIT has designated Senior Judge Richard K. Eaton as the sole judge hearing IEEPA refund cases. This is unusual and consequential: rather than risking inconsistent rulings across the Court's active judges, the consolidation ensures a unified refund framework. The practical effect for litigants is that case-specific motion practice is often deferred pending lead-case rulings that apply to the broader docket.
Lead Case Rulings
Rather than issuing individual judgments in each of the 2,000+ pending cases, Judge Eaton has issued lead-case orders — first in Atmus Filtration, Inc. v. United States and, following that case's dismissal, in Euro-Notions Florida, Inc. v. U.S. Customs and Border Protection. These orders direct CBP's conduct with respect to liquidation and reliquidation, and establish the procedural framework under which administrative refunds will be issued to importers in and outside of the litigation docket.
Reliquidation Order and CBP Compliance
The operative relief is an order directing CBP to liquidate unliquidated entries without regard to IEEPA duties, and to reliquidate non-final liquidated entries on the same basis. Compliance is administrative: CBP staff adjust the entry records in ACE, issue revised liquidation notices, and in due course generate refunds. The government has estimated a processing target of 45 days from clean submission under Phase 1.
Statutory Interest Under § 1505(b)
Under 19 U.S.C. § 1505(b), refunded duties accrue interest from the date of deposit until the date of refund, at rates set under 26 U.S.C. § 6621. For importers whose deposits occurred in early 2025, accrued interest can represent a meaningful component of total recovery — and counsel should confirm interest is being calculated correctly rather than waived as a matter of CBP convenience.
Government Appeal to the Federal Circuit
The Department of Justice has signaled intent to appeal the CIT's refund orders to the U.S. Court of Appeals for the Federal Circuit, particularly on the question whether the CIT's refund framework properly extends to importers who did not themselves file suit. An appellate stay, if granted, would delay disbursement; if denied, refunds proceed pending appeal. The Federal Circuit's prior handling of the IEEPA cases — remanding promptly to the CIT after the Supreme Court's ruling — suggests a disposition to resolve the issues efficiently, but timing remains uncertain.
Final Disbursement and Post-Refund Coordination
CBP issues refund checks (or electronic credits) through the Treasury's standard disbursement channels. Importers then face a set of post-refund obligations: internal reconciliation with customs brokers, adjustments to transfer pricing and intercompany accounts if applicable, accounting treatment for the year of recovery, and — most importantly for many consumer-facing importers — exposure to pending or threatened class action claims from downstream customers who bore the tariff cost at the point of sale.
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Five Jurisdictional Traps
Beyond the numbered sequence, the following traps deserve specific attention. Each has cost importers meaningful recovery in the first wave of refund actions.
Trap 1: The 180-day protest window measured from liquidation — not from the Supreme Court's decision.
Nothing in Learning Resources or the CIT's March orders resets the 180-day protest clock. Importers who did not file protests during the ordinary course of 2025 and early 2026 cannot do so retroactively simply because the tariffs are now known to have been unlawful.
Trap 2: Finality of liquidation for entries past the protest window.
Absent a timely protest, a liquidated entry becomes "final" by operation of statute. Whether the CIT's remedial orders can restore refund rights for such entries is the single most-litigated issue in the current round of lead-case practice.
Trap 3: Importer-of-record mismatches.
Refunds issue to the importer of record — not necessarily to the economic owner of the imported goods. Where import operations were handled by a third-party logistics provider, a contract manufacturer, or a related affiliate under a different tax ID, identifying the correct refund recipient can require careful documentation and, sometimes, formal assignment.
Trap 4: Related-party transfer pricing exposure.
Refunds that reduce the landed cost of imported goods affect transfer pricing calculations in related-party transactions. Counsel should coordinate with tax advisors on the year of recovery, particularly where advance pricing agreements are in place.
Trap 5: Consumer pass-through claims.
A growing body of state-law unjust enrichment and deceptive practices claims alleges that retailers who passed IEEPA costs through to consumers are obligated to pass refunds back. The merits are contested; the exposure is real. Counsel handling the refund side should coordinate with product and consumer-class defense counsel from the outset.
"The process is unprecedented in scale. The procedural rules are not. The rules of protest, liquidation, and Section 1581(a) jurisdiction have been in place for decades — they simply have never been stress-tested at this volume." — Senior Customs Practitioner, New York (on background)
A Note on Timing Expectations
Importers reasonably want to know: when will the money arrive? The honest answer, as of April 21, 2026, varies by category.
For entries that fall within CBP's Phase 1 scope — unliquidated entries and entries still within the 90-day voluntary reliquidation window — CBP's declarations indicate a processing target of approximately 45 days from clean submission, subject to compliance review. For entries that fall within Phase 2 (finally liquidated entries and others outside Phase 1 criteria), no firm timeline has been provided; CBP has indicated only that a subsequent phase will address them.
For litigated refund actions at the CIT, the consolidation before Judge Eaton has accelerated some timelines relative to ordinary CIT docket speed, but an anticipated Federal Circuit appeal could introduce delay measured in months rather than weeks. For importers facing material cash-position questions, building refund receipt into financial planning beyond calendar 2026 is appropriate.
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Working Checklist for Importers
Before engaging counsel — or, if you are self-managing through your broker, before submitting a Phase 1 package — gather the following. This will save time at every downstream step.
- A complete list of entries on which IEEPA duties were paid (entry number, date of entry, port of entry, importer of record, entered value, IEEPA duty amount, classification).
- ACE query outputs confirming liquidation status for each entry (unliquidated, liquidated / non-final, liquidated / final).
- Copies of any protest filings and protest denials received from CBP during 2025 and 2026.
- Customs broker name, filer code, and contact for each entry.
- Pricing and pass-through documentation showing how the tariff cost was absorbed, priced-through, or handled in customer contracts.
- Internal finance records reconciling duty deposits to general ledger — this matters for interest calculations and for tax treatment of recoveries.
- Any pending, threatened, or demand-letter class action exposure related to tariff-driven pricing.
- Transfer pricing documentation if imports were from related parties.
Frequently Asked Questions
What is the difference between "liquidation" and "reliquidation"?
Liquidation is CBP's final administrative determination of duties owed on an entry. Reliquidation is the re-opening of that final determination to adjust the duty assessment — either voluntarily by CBP under 19 U.S.C. § 1501 within 90 days of original liquidation, or by court order in the context of a successful protest or lawsuit.
Do I have to file a protest if my entry is unliquidated?
No. CBP's Phase 1 rollout allows unliquidated entries to be liquidated directly without IEEPA duties, through the ACE workflow. A protest is only required once an entry has been finally liquidated with IEEPA duties included.
What happens if my entries liquidated without a protest being filed in time?
Those entries are "final" as a technical matter. Whether the CIT's remedial orders reach them is the most-litigated question in the current posture. Counsel may pursue creative jurisdictional theories, and legislative action under the pending Tariff Refund Act of 2026 could resolve the issue, but no one should assume recovery without specific case analysis.
How is interest calculated on tariff refunds?
Under 19 U.S.C. § 1505(b), interest runs from the date of duty deposit to the date of refund, at rates set under 26 U.S.C. § 6621 — currently in the range of 7–8% annualized. For multi-year exposure, this is material.
Will a class action against retailers affect my right to a refund?
The pending consumer class actions are directed at retailers whose refund recovery may be recharacterized as an unjust windfall. They do not, as currently pleaded, affect the underlying refund right — but importers facing such claims should coordinate refund counsel with consumer-defense counsel before settling either front.
Can I handle the refund process without a lawyer?
For many importers with clean Phase 1-eligible entries, yes — working through a licensed customs broker is often sufficient. For importers with finally liquidated entries, related-party complexity, consumer pass-through exposure, or large dollar amounts at risk, retained counsel is strongly advisable.
How can Commerce Justice Alliance help me find the right attorney?
Commerce Justice Alliance operates an intake-and-matching workflow specifically for tariff refund engagements. After a six-minute intake, the Alliance returns matched attorney proposals within 48 hours, each with CIT admission verified, conflict screens completed, and fee structure disclosed in writing.
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