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Legal & Regulatory | March 28, 2026 | 13 min read

What Is a CBP Protest? When and Why Importers File One

Daniel Whitmore
What Is a CBP Protest? When and Why Importers File One

If you’ve been told you need to “file a protest” to get your IEEPA tariff refund, you might be wondering what that actually means. A CBP protest isn’t a sign-waving demonstration. It’s a formal administrative procedure — essentially a legal challenge to how Customs and Border Protection assessed duties on your imports.

For importers pursuing IEEPA tariff refunds, the protest process is one of the four recovery paths available. Whether you need to file one depends on the status of your entries. If your entries have been liquidated (finalized by CBP) within the last 180 days, a protest is likely your primary path to recovery.

Here’s everything you need to know.

What a CBP Protest Actually Is

A CBP protest is a formal written challenge, filed under 19 U.S.C. Section 1514, disputing a decision by Customs and Border Protection regarding the classification, valuation, rate of duty, or other treatment of imported merchandise. It’s the administrative equivalent of saying: “CBP, you charged me incorrectly, and here’s why.”

Section 1514 of Title 19 of the United States Code gives importers the right to protest certain CBP decisions. The statute specifically lists what can be protested:

  • Classification of merchandise (which HTS code was assigned)
  • Appraised value of merchandise
  • Rate and amount of duties charged
  • Exclusion of merchandise from entry
  • Liquidation or reliquidation of an entry
  • Refusal to pay a drawback claim

For IEEPA refund purposes, you’re protesting the rate and amount of duties charged — specifically, the IEEPA surcharge that was assessed under HTS 9903 codes that the Supreme Court subsequently ruled unconstitutional.

Think of It Like an Appeal

If you’re not a trade professional, the easiest analogy is a tax appeal. You filed your import entry, CBP assessed duties (including the IEEPA surcharge), and the entry was liquidated. You’re now challenging that assessment by saying: “The IEEPA tariff was illegally imposed. The Supreme Court ruled it unconstitutional. I want the IEEPA portion of my duties returned.”

The key difference from a tax appeal is that CBP protests have strict deadlines, specific form requirements, and a defined process that can escalate to federal court if CBP denies the protest.

When You Need to File a Protest

Not every importer pursuing an IEEPA refund needs a protest. The decision depends entirely on the liquidation status of your entries.

Liquidated vs. Unliquidated Entries

When you import goods, your customs broker files an entry summary with CBP. That entry stays “open” (unliquidated) while CBP reviews it. Eventually — typically about 314 days after entry — CBP finalizes the entry through a process called liquidation. Liquidation is CBP’s final determination of the duties owed.

Entry StatusRecovery PathProtest Needed?
UnliquidatedPost-Summary CorrectionNo
Liquidated within 180 daysFormal ProtestYes
Liquidated more than 180 days agoCIT LitigationNo (different path)

If your entries haven’t been liquidated yet, your customs broker can file a Post-Summary Correction to remove the IEEPA codes without needing a protest. This is the fastest path.

If your entries were liquidated within the last 180 days, a protest is your path to recovery. The protest formally challenges the liquidation and requests reliquidation without the IEEPA surcharge.

If your entries were liquidated more than 180 days ago, you’ve missed the protest window and will need to pursue recovery through the Court of International Trade.

The 180-Day Window

This is the most critical deadline in the protest process. Under 19 U.S.C. Section 1514(c)(3), you have exactly 180 days from the date of liquidation to file a protest. Not 181 days. Not “about six months.” Exactly 180 days.

The clock starts on the date CBP posts the liquidation notice — typically through the ACE system bulletin board. Your customs broker can track liquidation dates for all your entries. If you’re not sure whether your entries have been liquidated or when, this is the first question to ask.

This deadline is absolute. There’s no extension, no late filing exception, and no waiver. Missing the 180-day window by even one day means the protest option is gone. Understanding how the 180-day window works in the IEEPA context is essential.

How to File a CBP Protest

The protest process has specific requirements. Here’s what’s involved.

Who Files

Protests are typically filed by your customs broker or trade attorney through the ACE system (CBP’s electronic trade processing platform). While you can technically file a protest yourself using CBP Form 19, the ACE electronic filing is faster and reduces errors.

If you use a customs broker for your imports, they’re already set up in ACE and can file the protest on your behalf. If you don’t have a broker, you’ll need one — or a trade attorney who handles CBP proceedings.

What the Protest Must Include

A valid protest must contain:

  1. Identification of the protesting party — your company name, importer number, and contact information
  2. The entry being protested — entry number, port of entry, and date of entry
  3. The specific CBP decision being challenged — in this case, the assessment of IEEPA duties under HTS 9903 codes
  4. The legal basis for the protest — the Supreme Court’s ruling invalidating IEEPA tariffs, the CIT’s refund order, and the specific statutory violations
  5. The relief requested — reliquidation of the entry without IEEPA surcharges and refund of the IEEPA duty amounts plus applicable interest

Filing One Protest Per Entry vs. Batch Protests

CBP allows batch protests — a single protest can cover multiple entries, as long as they share the same factual and legal basis. Since all IEEPA refund claims share the same legal basis (the Supreme Court ruling), you can often batch multiple entries into a single protest. This saves time and reduces filing complexity.

However, there are limits. All entries in a batch protest must have been imported through the same port and by the same importer of record. If you imported through multiple ports, you’ll need separate protests for each port.

Get your free Impact Assessment →

What Happens After You File

Filing the protest is just the beginning. Here’s the timeline you can expect.

CBP Review Period

After you file, CBP has up to two years to act on the protest. In practice, the timeline varies enormously — from a few months to the full two years. For IEEPA protests, CBP may process them more quickly given the Supreme Court mandate, but there’s no guarantee.

During the review period, CBP may:

  • Grant the protest — agree with your challenge and issue a refund
  • Deny the protest — disagree with your challenge (unlikely for straightforward IEEPA claims given the Supreme Court ruling, but possible if there are classification or entry issues)
  • Grant in part and deny in part — agree on some entries but not others
  • Take no action — let the clock run, which has its own implications

Accelerated Disposition

Under 19 U.S.C. Section 1515(b), you can request accelerated disposition of your protest. This forces CBP’s hand: if CBP doesn’t act within 30 days of your request, the protest is deemed denied. A deemed denial isn’t the end — it actually opens the door to the next step.

Accelerated disposition is a strategic tool. It’s useful when you want to move the process along rather than waiting months or years for CBP to get to your protest. For IEEPA claims specifically, some importers are using accelerated disposition to fast-track their cases to federal court.

If Your Protest Is Denied

If CBP denies your protest (or it’s deemed denied through accelerated disposition), you have 180 days to file a summons at the Court of International Trade. This is the federal court that handles customs disputes, and it has exclusive jurisdiction over CBP protest denials.

Filing at the CIT requires legal counsel — specifically, an attorney admitted to the CIT bar. This is a significant escalation in terms of time, cost, and complexity. But for large IEEPA claims, it may be the right move if CBP isn’t processing protests efficiently.

Protest vs. Other Recovery Paths

Understanding how protests fit into the broader IEEPA recovery landscape helps you make the right strategic decisions.

Protest vs. Post-Summary Correction

If your entries are still unliquidated, you don’t need a protest. A Post-Summary Correction (PSC) is faster, simpler, and handled entirely through your broker’s existing ACE access. The PSC amends the entry summary to remove IEEPA codes, and CBP recalculates duties.

You only need a protest if the entry has already been liquidated. Since entries typically liquidate around 314 days after filing, imports from the first half of the IEEPA period (early-to-mid 2025) may already be liquidated, while later imports may still be open.

Protest vs. CIT Litigation

If the 180-day protest window has closed, you can’t file a protest. Your path is direct CIT litigation under 28 U.S.C. Section 1581(i). This is a different legal mechanism than appealing a protest denial — it’s a standalone civil action against the government.

The key distinction: a protest is an administrative remedy within CBP. CIT litigation is a judicial remedy in federal court. The protest is usually the first step; CIT is the escalation.

Protest vs. Immediate Capital

If you don’t want to wait for CBP to process your protest (which could take months or years), you can assign your refund claim to an institutional buyer in exchange for immediate payment. This is the immediate capital path, and it’s compatible with having a pending protest. The buyer takes over the claim — including the protest — and assumes the processing risk.

Some importers file protests as a protective measure (to preserve the claim) and then explore immediate capital as an alternative to waiting for CBP to act.

Common Protest Mistakes

Having guided importers through the IEEPA recovery process, we’ve seen several recurring mistakes in the protest process.

Missing the 180-Day Deadline

This is the most consequential mistake, and it’s unfortunately common. Importers who aren’t monitoring their liquidation dates may not realize the clock is running until it’s too late. If you’re not sure whether any of your entries have been liquidated, check now — not next week, not next month.

Filing Against the Wrong Entries

Some importers confuse IEEPA duties with Section 301 or Section 232 duties. Filing a protest claiming IEEPA refunds on entries that only have Section 301 codes wastes time and may invite scrutiny. Make sure you’re protesting the right entries with the right HTS 9903 codes. Understanding how U.S. import tariffs work as a layered system helps avoid this mistake.

Incomplete Documentation

A protest that doesn’t include the required information — entry numbers, legal basis, specific relief requested — may be rejected on procedural grounds. CBP doesn’t always give you a chance to fix and refile within the 180-day window, so getting it right the first time matters.

Not Using a Qualified Filer

While anyone can technically file a protest, the process has technicalities that matter. Your customs broker or trade attorney has filed hundreds or thousands of protests and knows what CBP expects. Self-filing to save money can backfire if procedural errors cause the protest to be rejected.

Ignoring the Strategic Options

Some importers treat the protest as a “file and forget” exercise. But the protest process includes strategic options — like accelerated disposition — that can meaningfully impact your timeline. Discuss your strategy with your broker or advisor before filing.

The IEEPA Protest Context

The IEEPA protest wave is unusual in several respects. Unlike normal protest situations (where an importer is challenging CBP’s interpretation of ambiguous law), IEEPA protests are backed by a Supreme Court ruling that definitively struck down the tariffs. This means:

  • The legal basis is settled. CBP shouldn’t be denying IEEPA protests on the merits. The Supreme Court has spoken.
  • Volume is unprecedented. Thousands of importers are filing IEEPA protests simultaneously. CBP’s processing capacity is strained.
  • Interest is accruing. While CBP sits on protests, interest on the overpaid duties continues to accrue. This is money the government owes you.

The IEEPA refund FAQ addresses common questions about the protest timeline and what to expect during the processing period.

Protest Processing: What to Expect in 2026

The IEEPA protest wave is unlike anything CBP has handled before. Here’s what the processing landscape looks like right now.

Volume and Capacity

CBP is receiving thousands of IEEPA-related protests simultaneously. Each protest may cover multiple entries, meaning the total number of entries under protest is potentially in the hundreds of thousands. CBP’s protest processing staff — already stretched by normal workload — is dealing with an unprecedented surge.

This volume means processing times may be longer than normal. While CBP has committed to processing IEEPA protests expeditiously per the CIT’s order, “expeditiously” in government terms can still mean months.

Interest on Refunds

When CBP eventually processes your protest and issues a refund, you’re entitled to interest on the overpaid duties. The interest rate is set quarterly by the IRS and applied from the date of overpayment to the date of refund. Given that some IEEPA duties were paid as far back as February 2025, the interest component can be meaningful — potentially adding 5-8% to the refund amount depending on the processing timeline.

Tracking Your Protest

After filing, your customs broker can track the protest status through ACE. CBP assigns a protest number and updates the status as the protest moves through review. If you haven’t heard anything after several months, ask your broker to check the status. And if you want to accelerate the process, discuss the accelerated disposition option.

What to Do Right Now

If you have liquidated entries with IEEPA surcharges and the 180-day window is still open, here’s your action plan:

  1. Pull your liquidation dates from ACE or ask your broker for a liquidation report
  2. Identify entries within the 180-day window — these are your protest candidates
  3. Verify the HTS 9903 codes on those entries correspond to IEEPA (not Section 301 or 232)
  4. Engage your customs broker to file protests before any windows close
  5. Consider accelerated disposition if you want to move faster
  6. Explore complementary paths — immediate capital, PSC for unliquidated entries, CIT referral for entries outside the window

Every day that passes is a day closer to the 180-day deadline on your oldest liquidated entries. If you’re not sure which of your entries are at risk, an Impact Assessment maps everything out — liquidation status, protest deadlines, recovery path recommendations, and estimated refund amounts.

Filing a protest is a straightforward process when you have the right documentation and the right team. But the window to file is finite. Don’t let a deadline pass because you were still deciding whether to act.

Request a free Impact Assessment to identify every entry that needs a protest, every window that’s closing, and the total IEEPA duty amount you can recover. The assessment is confidential, covered by mutual NDA, and delivered within 5-10 business days.

Daniel Whitmore
Written by
Daniel Whitmore

Senior trade policy analyst at Tariff Solutions with 15 years in customs law and federal claims recovery. Former CBP regulatory affairs advisor. Covers Supreme Court rulings, CIT orders, and legislative developments affecting IEEPA tariff refunds.

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