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Published on January 5, 2026 4 min read

IEEPA Supreme Court Case: Navigating Refunds, Protests, and Practical Next Steps 

Red Tariffs label on a hundred dollar bill

Summary: Importers facing IEEPA tariffs should not rush into litigation. There is still time to protect refund rights, proactively monitor imports, request liquidation extensions, file protests as needed and exhaust all administrative remedies.

With the U.S. Supreme Court currently reviewing the IEEPA tariffs, many importers across the country are asking the same question: Should we be filing refunds, submitting protests, or initiating lawsuits now?

The short answer is don’t panic. Most importers still have time and there are several administrative remedies and strategies to pursue without rushing into litigation.

You may have seen headlines of companies such as Costco filing lawsuits related to the IEEPA tariffs. These high-profile cases are largely procedural positioning and should not be viewed as a signal that all importers must immediately follow suit and pursue litigation.

How to Preserve Your Rights and Prepare for the Supreme Court Ruling

Below, we outline what you need to know about preserving your rights and preparing for the Supreme Court’s upcoming review as the IEEPA case evolves.

Section Details

How Liquidation Works and Why Timing Matters

Liquidation is the point at which U.S. Customs and Border Protection (CBP) finalizes the duties, taxes, and fees owed on an import entry.

Key timelines to remember:

  • Liquidation generally occurs 314 days after importation
  • Within 15 days before liquidation, Post Summary Correction (PSC) may be filed
  • After liquidation
    • The entry becomes final
    • Importers have 180 days to file a Protest
    • Protests are more formal and administratively burdensome than PSCs

Most IEEPA Entries Are Not Yet Liquidated

For many importers, entries subject to IEEPA tariffs have not yet liquidated, given that the IEEPA fentanyl tariffs began in February and the baseline/reciprocal IEEPA tariffs were implemented in early April, which means:

  • No immediate refund action is required
  • Strategic decisions can wait until greater legal clarity emerges
  • There is still time to properly preserve refund rights

Recommended Step-by-Step Best Practices for Importers

(1) Monitor Your Entries — Get ACE Access

If you do not already have one, set up your own account in CBP’s Automated Commercial Environment (ACE). ACE provides real-time visibility into the liquidation status of your imports. Do not rely solely on brokers.

(2) Consider a Liquidation Extension Request

Importers may request a liquidation extension, if granted, by submitting a written request demonstrating good cause.

(3) If the Extension is Denied — Choose the Right Path

If CBP denies the extension request, importers generally have two options:

(a) File a Protest (Recommended)

  • While administratively burdensome, protests are trackable (if filed in ACE) and involve significantly fewer costs and resources than litigation
  • CBP may suspend action on the protest pending the outcome of the IEEPA case
  • This option cleanly preserves refund rights
  • If a protest is denied, importers have 180 days to initiate litigation

(b) File a Lawsuit Immediately

  • Typically brought under 28 U.S.C. § 1581(i) (residual jurisdiction)
  • Higher cost, complexity, and risk
  • Often unnecessary at this stage

Litigation Still Comes Later (If Needed)

If a protest is denied, importers may initiate litigation under:

  • 28 U.S.C. § 1581(a) — denied protest (within 180 days)
  • 28 U.S.C. § 1581(i) — residual jurisdiction

Once litigation is properly filed, the Court of International Trade (CIT) may order reliquidation of entries consistent with the Supreme Court’s ruling, if the tariffs are ultimately invalidated.

Key Takeaways and Next Steps for Importers

Before pursuing litigation, it’s crucial to exhaust all available administrative remedies first. That means:

  • Regularly monitor your entry filings
  • Leverage liquidation extensions
  • File protests where appropriate
  • Preserve your legal rights without unnecessary litigation

While the IEEPA case is still developing, for most importers time is still on your side.

If you need support with reviewing your liquidation exposure, preparing and filing extension requests, or developing an effective protest strategy, please do not hesitate to contact us. Our team is ready to assist with every step of the process to help you safeguard your interests.

How we can help

Aprio’s Customs & Tariffs team can review your import activity and liquidation status, advise on liquidation extension requests and protest strategies, prepare and file protests on your behalf, assist with assessing potential tariff refunds, and support litigation strategies in coordination with legal partners. Contact us