Court of International Trade Tariff Refund: When to Sue vs File CAPE for IEEPA Duties
The Court of International Trade is where importers sue for IEEPA tariff refunds. When litigation is the only door left, and when CAPE alone is enough.
Chen Cui· Co-Founder of GingerControl
Reviewed by: Michael Weick, LCB / CCS
Customs compliance manager with 42 years of experience (ex Subaru of America, Merck, and Motorola).
TL;DR
The Court of International Trade is the federal court where importers sue the United States for IEEPA tariff refunds, and after the 2026 ruling it is the only pathway that reaches entries that finally liquidated more than 180 days ago.
Your CFO forwarded a law-firm alert headlined "the government is appealing the nationwide refund order" and asked one question: do we file our own lawsuit, or do we just wait? If you have already recovered most of your IEEPA duties through CAPE but have a stranded slice sitting on entries that liquidated months ago, that is the right question to be losing sleep over. The honest answer is that CAPE and a Court of International Trade lawsuit are two different doors, they reach different entries, and for the oldest entries the administrative door is already shut.
The Court of International Trade (CIT) is the specialized federal court where importers sue the United States to recover unlawfully collected duties, and after the 2026 IEEPA ruling it is the only refund pathway that reaches entries CAPE and the protest window can no longer touch. There are two doors: the administrative route (CAPE plus protest, run by CBP) and the judicial route (a CIT lawsuit). For entries that finally liquidated more than 180 days ago, only the judicial door is open, and CBP now limits CAPE Phase 3 refunds on those entries to importers who filed at the CIT.
Primary sources: 28 U.S.C. Chapter 95 (Court of International Trade jurisdiction) and U.S. Customs and Border Protection, IEEPA Duty Refunds. Both are linked throughout and listed in full under References.
One note on my seat before we start. I build compliance software and advise importers; I do not litigate and I am not a law firm. Everything below is the map an importer hands to trade counsel, not legal advice you can rely on. The decision to sue, and on which theory, belongs to your lawyers.
What is the Court of International Trade tariff refund route, and when do you need it?
The Court of International Trade is the specialized federal court with exclusive, nationwide jurisdiction over trade cases, and the tariff-refund route means filing a lawsuit there to make the United States give back duties it collected unlawfully. It runs alongside the administrative route, not on top of it: the administrative route is CBP refunding you through CAPE and protest with no court involved, while the judicial route is you, as a plaintiff, asking a judge to order CBP to reliquidate your entries and refund the money. Both can end in a refund, but they reach different entries on different clocks.
You need the judicial route in exactly one situation: when your money sits on entries that finally liquidated more than 180 days ago. Before that wall, the administrative route can reach the entry; after it, every administrative window is closed and a CIT complaint is the only door left. If none of your money is stranded past that wall, you do not need to sue.
This post starts after the Supreme Court ruling, not at it. What the Court held in Learning Resources v. Trump on February 20, 2026, is covered in the Supreme Court IEEPA ruling explainer and the compliance-side breakdown. Here we take the ruling as given and ask the only question that matters for the stranded money: which door reaches it, and by when.
How does the administrative route work, and where exactly does it stop?
The administrative route refunds IEEPA duty through two CBP mechanisms, voluntary reliquidation and protest, and it stops hard at the 180-day mark after an entry liquidates. Per the Congressional Research Service, an entry is liquidated (CBP finalizes the duty) typically automatically 314 days after entry under 19 U.S.C. 1504. From the date of liquidation, two administrative windows open and then close:
- The 90-day voluntary reliquidation window (19 U.S.C. 1501). CBP may voluntarily reliquidate an entry within 90 days of its original liquidation to correct errors. This underlies CAPE Phase 1's roughly 80-day eligibility band (CBP reserves a few days for processing). Once it passes, CBP does not use this authority.
- The 180-day protest window (19 U.S.C. 1514). An importer may protest a CBP decision within 180 days after liquidation. If CBP allows the protest under 19 U.S.C. 1515, duties collected in excess are refunded. A protester can also request accelerated disposition; if CBP does not decide within 30 days, the protest is deemed denied, opening the door to judicial review.
Once the 180-day protest period lapses, liquidation becomes final, and CBP currently lacks authority to reliquidate an IEEPA entry administratively unless and until such authority is established. That is the wall. CAPE, the Consolidated Administration and Processing of Entries function inside ACE, is built on these same windows: Phase 1 (live April 20, 2026) covers unliquidated entries and entries liquidated within about 80 days, and Phase 2 (reconciliation-flagged entries, launched June 29, 2026) extends coverage but not past finality. So for an entry finally liquidated more than 180 days ago, neither voluntary reliquidation nor protest is available and neither CAPE phase can touch it. Everything past that wall is judicial territory.
I am not re-deriving CAPE's phase mechanics here: the full scope and timeline live in the CAPE Phase 2 scope and eligibility guide, and the four-way choice among CAPE, PSC, protest, and CIT lives in the CAPE vs protest vs PSC decision guide.
Why does the CIT reach money the administrative route cannot?
The Court of International Trade reaches finally-liquidated entries because a federal statute, 28 U.S.C. 2643, lets the court order reliquidation and refunds even when an entry's liquidation is already final, whereas the administrative route has no such authority once its windows close. That is the entire payoff of litigation, and it rests on three points.
First, liquidation finality is no bar in court. Section 2643 lets the CIT order money damages, injunctions, and any other appropriate relief, and courts have held that the finality of liquidation is no bar to it. A protest cannot revive a finally-liquidated entry; a CIT judgment can. Second, the residual door does not depend on a timely protest: under 28 U.S.C. 1581(i) the CIT hears civil actions arising out of laws providing for revenue from imports, and in the IEEPA litigation it has held it can order reliquidation to provide refunds, so a lapsed 180-day protest clock does not close it.
Third, there is clean historical precedent. After the Supreme Court struck the Harbor Maintenance Tax on exports in United States v. U.S. Shoe Corp. (1998), the CIT ordered a streamlined refund procedure available only to plaintiffs who had filed lawsuits there. That is the sharpest analogy for what is happening now: CBP is limiting CAPE Phase 3 refunds for finally-liquidated entries to importers who filed suit, echoing the plaintiffs-only structure the CIT used for HMT refunds.
| Administrative route (CAPE + protest) | Judicial route (CIT lawsuit) | |
|---|---|---|
| Run by | CBP | The importer, through trade counsel, before a CIT judge |
| Reaches unliquidated + within-window entries | Yes | Yes, but litigation is unnecessary for these |
| Reaches entries finally liquidated more than 180 days ago | No | Yes, under 28 U.S.C. 2643 finality is no bar |
| Legal authority | 19 U.S.C. 1501, 1514, 1515 | 28 U.S.C. 1581(a) or 1581(i), 2643 |
| Clock | 90 days (1501) / 180 days from liquidation (1514) | 180 days from protest denial (1581(a)) / 2 years from accrual (1581(i)) |
| Cost | Low; largely internal or broker time | Legal spend to file and prosecute a complaint |
What are the deadlines, and did the two-year clock already start?
There are two litigation clocks, and the one that matters for finally-liquidated entries is the two-year residual clock, which the Congressional Research Service says likely started when you paid the duties, meaning for the earliest IEEPA entries it may have begun in early-to-mid 2025. Missing it is how a stranded refund becomes a silent, permanent write-off, so treat it as already running.
- The denied-protest clock (28 U.S.C. 1581(a)). A suit on a denied protest must be filed within 180 days after the denial (28 U.S.C. 2636), and applies only if you protested and were denied.
- The residual clock (28 U.S.C. 1581(i)). A suit under residual jurisdiction generally must be filed within two years after the cause of action accrues (28 U.S.C. 2636).
The trap inside the trap is when that two-year clock accrues, and it is unsettled. The Congressional Research Service points to the time the tariffs were paid. If accrual runs from payment, then for entries where IEEPA duty was collected in early 2025, a two-year window could begin closing in early-to-mid 2027, which is why the trade-counsel alerts I have read this summer describe the deadline as already running. Do not let the accrual question paralyze the calendar: pin the earliest plausible accrual date, calendar backward from it, and let counsel refine it.
There is a second reason importers reach for the residual 1581(i) door over 1581(a): it is uncertain whether IEEPA collection is even protestable. Some authority holds CBP's collection may not be a protestable "decision" under 19 U.S.C. 1514, because CBP was implementing the President's executive orders and lacks authority to assess their legality, making collection arguably ministerial. If it is not protestable, a 1581(a) suit built on a protest could be dismissed, so some importers file directly under 1581(i). That is unresolved, and it is the call your lawyers are for. Protest drafting mechanics live in the guide to filing a customs protest; the interaction of the 180-day protest clock and the 80-day CAPE window lives in the 180-day liquidation deadline guide.
The numbers behind that clock are large. As of December 10, 2025, importers had paid roughly $129 billion in estimated IEEPA duty deposits, with about 19.2 million of the roughly 34 million affected entries still unliquidated, per the Congressional Research Service. Later 2026 counsel reporting estimates the finally-liquidated exposure alone at more than $30 billion, the money only the judicial route can reach.
Do you need to sue, or can you wait for the nationwide order and the appeal?
You can wait, but as of July 2026 waiting is a genuine risk rather than a safe default, because whether importers who did not sue will ultimately be refunded on finally-liquidated entries is exactly the question the pending Federal Circuit appeal will decide. In Atmus Filtration, Inc. v. United States (Ct. No. 26-01259), Judge Richard K. Eaton of the CIT issued a nationwide order directing CBP to reliquidate IEEPA entries without the IEEPA duty, and a March 27, 2026 amended order extended it to entries whose liquidation had already become final. After the Atmus plaintiff dismissed its complaint, Judge Eaton reissued a materially similar order on April 7, 2026 in a substitute case, Euro-Notions Florida v. United States, so the order survived the dismissal. On its face, it reaches everyone. But in early June 2026, the Department of Justice appealed to the U.S. Court of Appeals for the Federal Circuit, still pending with no ruling, on two prongs that matter to you:
- The nationwide refund order is an impermissible universal injunction under Trump v. CASA, Inc. (2025), which held that courts may not issue relief broader than needed to give complete relief to the parties before them.
- Importers who did not file their own CIT actions are not entitled to refunds on finally-liquidated entries; CBP, the government says, cannot reprocess those older entries without a court order specific to each importer.
The Congressional Research Service flags the CASA problem directly: its implications for the CIT's ability to order refunds for nonparties may be unclear. That is the crux of the wait-vs-file risk, and the honest answer is that nobody knows how the Federal Circuit will rule:
- The case for waiting. Several respected firms conclude it is reasonable to expect importers who do not preemptively file suit will still receive refunds if the nationwide order survives. If they are right, filing your own suit was unnecessary spend.
- The case for filing. If the government wins on the universal-injunction point, non-plaintiffs could be permanently cut off from finally-liquidated-entry refunds, and CBP's own CAPE Phase 3, on track for late July 2026, is already limited to CIT filers. If they are right, a stranded importer who waited and lost has forfeited the money.
There is no clean answer, only a risk-tolerance judgment measured against a number: the cost of a protective complaint versus the size of your stranded tranche. If you have $2.5M above the 180-day wall, the spend to preserve it is small next to a permanent write-off; if your stranded amount is modest, the math can go the other way. That is a CFO-and-counsel conversation.
Your team will also ask about joining a class action instead of filing. The CIT permits class actions under its Rule 23, but past cases cast doubt on whether certification is available for tariff-refund seekers: in 1996 the CIT declined to certify a class of Harbor Maintenance Tax payers, and at least one IEEPA class action was voluntarily withdrawn before any substantive proceedings. A class you have not joined, and that may never be certified, is a weaker hedge than being a named plaintiff.
Finally, a case of mistaken identity: the separate CIT ruling on the Section 122 surcharge is a different case and a different tariff, not the IEEPA nationwide refund order. If any of your duty was Section 122, start with the Section 122 CIT ruling explainer and the Section 122 refund rights guide; the Section 122 vs IEEPA refund comparison exists precisely to keep the two straight.
Who genuinely does not need to sue, and where GingerControl fits
Plenty of importers reading this do not need to file anything at the CIT, and I would rather tell you that than sell you a reason to litigate. If your money is all on unliquidated or within-window entries, CAPE Phase 1 and Phase 2 will refund it and a lawsuit is wasted spend; the judicial route only earns its cost when you have real money stranded above the 180-day wall. So the first job is to find out how much of your money is actually stranded, and that sizing is where my team's software fits. GingerControl's IEEPA Refund Recovery service, working from your ACE data, quantifies your total IEEPA exposure and buckets it by liquidation status, so you see the CAPE-eligible slice, the still-protestable slice, and the finally-liquidated, CIT-only slice as separate numbers; its refund calculator runs on ES-003 duty amounts, liquidation-status-driven eligibility, and protest-deadline surfacing, so the triage and deadline calendar come out in a form counsel can act on. Finding which entries carried IEEPA duty is a separate ACE step, covered in the ES-003 report walkthrough and the which-HTS-codes-carry-IEEPA-duties reference.
Here is the hard boundary, sharper on this post than any other in the cluster. GingerControl is builder-not-broker software and advisory. It does not litigate, does not file CIT complaints or summonses, and is not a law firm; it is not the Importer of Record, not a licensed customs broker, and does not file customs entries or give legal advice. The CIT lawsuit is filed by you, through trade counsel; the choice to sue and the jurisdictional theory are legal calls your lawyers make. Software does the quantification, the triage, and the deadline calendar that tell counsel what to sue over and by when. If you are still inside the administrative windows, the more relevant next step is the CAPE Declaration filing checklist, not a courtroom.
FAQ
Is the Court of International Trade the same thing as CAPE? No. CAPE is CBP's administrative refund process inside the ACE Portal, run without a judge. The Court of International Trade is a separate federal court where you, as a plaintiff, file a lawsuit through trade counsel. They are two different doors to a refund.
Can I get an IEEPA refund on a finally-liquidated entry without suing? Only through CAPE Phase 3, which CBP has stated is limited to importers who have filed at the CIT. So recovering finally-liquidated IEEPA duty requires being a CIT plaintiff, either to unlock Phase 3 or to win a judgment ordering reliquidation under 28 U.S.C. 2643.
What is the difference between 1581(a) and 1581(i) for an IEEPA refund? Section 1581(a) is the denied-protest path (180-day clock after denial); 1581(i) is the residual path (two-year clock from accrual), used when the protest route is unavailable or in doubt. Because IEEPA collection may not be protestable under 19 U.S.C. 1514, importers with finally-liquidated entries often look to 1581(i), but which theory applies is a legal call for counsel.
Is it safer to file a protective CIT complaint now or wait for the appeal? It is a risk-tolerance judgment. Waiting relies on the March 2026 nationwide order surviving the government's Federal Circuit appeal, which is pending and specifically disputes refunds for non-plaintiffs on finally-liquidated entries. A protective complaint preserves your rights regardless, at the cost of legal spend. Weigh that against your stranded tranche with counsel.
Does GingerControl file the lawsuit for me? No. GingerControl does not litigate, does not file CIT complaints, and is not a law firm or a customs broker. It sizes your IEEPA exposure, buckets entries by liquidation status, and surfaces deadlines, so counsel can see which entries are CIT-only and file accordingly.
Related resources
- How to Pull the ES-003 Report in ACE to Find Your IEEPA Entries, the step that sizes your exposure before any refund decision.
- How to File a CAPE Declaration in ACE for IEEPA Refunds, the administrative route for entries still inside the CAPE windows.
- Power of Attorney for an IEEPA Refund Filing, who is authorized to file on the Importer of Record's behalf.
- CAPE vs Protest vs PSC: The Channel Decision, the full entry-by-entry picker across all four channels.
- The 180-Day Liquidation Deadline for IEEPA Protests and CAPE, the wall that decides administrative-vs-judicial.
- Selling IEEPA Refunds: What Buyers Require, if you are weighing monetizing the receivable instead of waiting on litigation.
References
- Congressional Research Service, "Potential Refunds of Tariffs Imposed Under the International Emergency Economic Powers Act (IEEPA)," In Focus IF13150, Version 3, January 13, 2026. congress.gov
- 28 U.S.C. 1581 (Court of International Trade jurisdiction), 28 U.S.C. 2636 (statute of limitations), 28 U.S.C. 2643 (relief). uscode.house.gov
- 19 U.S.C. 1501 (voluntary reliquidation), 1504 (liquidation), 1514 (protest), 1515 (protest allowance and denial). uscode.house.gov
- Holland & Knight, "IEEPA Tariff Refund Update: Government Appeals CIT Refund Order and the Road Ahead for Importers," June 2026. hklaw.com
- Greenberg Traurig, "Court of International Trade Expands IEEPA Tariff Refunds to Cover Entries With Final Liquidations," March 2026 (Atmus Filtration, Ct. No. 26-01259, amended order March 27, 2026, Judge Richard K. Eaton). gtlaw.com
- Morgan Lewis, "Tariff Refund Battle Continues: Government Appeals Order," June 2026. morganlewis.com
- Green Worldwide Shipping, "CAPE Phase 3 for IEEPA Tariff Refunds on Track for End of July as Federal Circuit Appeal Continues," June 2026. greenworldwide.com
- U.S. Customs and Border Protection, "International Emergency Economic Powers Act (IEEPA) Duty Refunds," accessed July 2026. cbp.gov

Written by
Chen Cui
Co-Founder of GingerControl
Building scalable AI and automated workflows for trade compliance teams.
LinkedIn ProfileFrequently Asked Questions
- I already recovered most of my IEEPA duties through CAPE, so why would I ever need to sue at the Court of International Trade?
- Because CAPE and a lawsuit are two different doors, and each reaches a different set of entries. CAPE Phase 1 and Phase 2 refund unliquidated entries and entries still inside the 80-day and 180-day administrative windows. Once an entry has finally liquidated more than 180 days ago, no administrative window is open, and the only remaining door is a Court of International Trade complaint. If all of your money is already in the CAPE lanes, you do not need to sue. The question only matters for the stranded, finally-liquidated slice.
- We are a $95M importer with about $2.5M stranded on old entries that liquidated months ago. Is the CIT really the only way to get that back, or is there an administrative option I missed?
- For entries that finally liquidated more than 180 days ago, litigation is the only channel left. The 90-day voluntary reliquidation window (19 U.S.C. 1501) and the 180-day protest window (19 U.S.C. 1514) have both closed, and CAPE Phase 1 and Phase 2 stop at those same walls. The only administrative-adjacent path for finally-liquidated entries is CAPE Phase 3, which CBP will run only for importers who have already filed suit at the CIT. There is no administrative option you missed on that $2.5M. It is judicial or nothing.
- What actually happens when an importer files a tariff-refund suit at the Court of International Trade, step by step?
- The importer, through trade counsel, files a summons and complaint at the CIT naming the United States, asserting jurisdiction under 28 U.S.C. 1581, and asking the court to order CBP to reliquidate the entries without the IEEPA duty and refund the money. The court can grant that relief because 28 U.S.C. 2643 lets it order reliquidation and refunds even on entries whose liquidation is already final, which is the whole reason litigation reaches money the administrative route cannot. This is a legal proceeding run by counsel, not a form you file yourself. Software does not litigate.
- My broker said CAPE Phase 3 only refunds importers who filed at the CIT. Is that true, and does it mean I have to sue to unlock Phase 3?
- Yes, as of July 2026 CBP has stated that CAPE Phase 3, the phase covering finally-liquidated entries, will be processed only for importers who have filed lawsuits at the Court of International Trade. Being a CIT plaintiff is the eligibility key for Phase 3. So for your finally-liquidated entries, filing suit is what unlocks the administrative-adjacent Phase 3 path and preserves the judicial one at the same time. For entries still inside the CAPE Phase 1 or Phase 2 windows, you do not need to sue to be covered.
- For our entries that finally liquidated more than 180 days ago, can CAPE or a protest ever reach them, or is litigation the only channel left?
- Litigation is the only channel left. A protest must be filed within 180 days of liquidation under 19 U.S.C. 1514, and once that window lapses, liquidation becomes final and CBP currently lacks authority to reliquidate an IEEPA entry administratively. CAPE Phase 1 and Phase 2 are built on those same administrative windows, so they cannot reach a finally-liquidated entry either. The Court of International Trade can, because 28 U.S.C. 2643 makes the finality of liquidation no bar to the court ordering appropriate relief.
- How do I decide, entry by entry across roughly 5,800 filings a year, which ones go to CAPE, which to protest, and which need a CIT complaint?
- You route each entry by its liquidation status. Unliquidated entries and entries liquidated within about 80 days go to CAPE Phase 1. Entries liquidated 81 to 180 days ago are still protestable under 19 U.S.C. 1514. Entries that finally liquidated more than 180 days ago are past every administrative wall and are CIT-only. The full four-way channel picker across CAPE, PSC, protest, and CIT is its own decision tree; this post covers when litigation is the door and how the two routes differ, not the entire picker.
- What is the deadline to sue for an IEEPA refund at the CIT, and did the two-year clock start when we paid the duties back in early 2025?
- A suit under the CIT's residual jurisdiction (28 U.S.C. 1581(i)) generally must be filed within two years after the cause of action first accrues (28 U.S.C. 2636), and a suit on a denied protest under 1581(a) must be filed within 180 days of the denial. When the two-year residual clock starts is unsettled; the Congressional Research Service points to the time the tariffs were paid, which for the earliest IEEPA entries was early 2025. Treat the clock as already running and calendar it. Your counsel makes the accrual call, not software.
- What is the difference between suing on a denied protest under 1581(a) and the residual-jurisdiction route under 1581(i), and which one applies to my finally-liquidated entries?
- Section 1581(a) is the classic path: you file a protest, CBP denies it, and you sue on that denial within 180 days. Section 1581(i) is the CIT's residual jurisdiction, used when the protest route is unavailable or its availability is in doubt, with a two-year clock. Which door fits IEEPA money is genuinely uncertain, because some authority holds that CBP's collection of IEEPA tariffs may not be protestable under 19 U.S.C. 1514. For finally-liquidated entries with no timely protest, the residual 1581(i) door is typically the one in play, but that is a legal call for counsel.
- There is already a nationwide CIT order to refund everyone and the government is appealing it, so can I just wait for the appeal instead of filing my own lawsuit?
- You can, but it is a real risk, not a safe default. The March 2026 Atmus Filtration order directed CBP to reliquidate all IEEPA entries nationwide, including finally-liquidated ones, but the government appealed it to the Federal Circuit in early June 2026, arguing the order is an impermissible universal injunction and that importers who did not file their own CIT actions are not entitled to refunds on finally-liquidated entries. Whether non-plaintiffs are ultimately covered is exactly what the appeal will decide. If the government wins that point, waiting could permanently forfeit your finally-liquidated money.
- Should we file a protective CIT complaint now to preserve our $2.5M, or is joining a class action a cheaper way to protect the same rights?
- A protective complaint is the more reliable hedge; a class action is cheaper but less certain. The CIT permits class actions under its Rule 23, but past cases cast doubt on whether class certification is available for importers seeking tariff refunds, the CIT declined to certify a class of Harbor Maintenance Tax payers in 1996, and at least one IEEPA class action was voluntarily withdrawn before any substantive proceedings. Relying on a class you have not joined and that may never be certified is a weaker position than being a named plaintiff. The trade-off between legal spend and the stranded amount is your call with counsel.
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