Yes, an importer can sue when U.S. Customs and Border Protection (CBP) denies a tariff refund protest. The case goes to the Court of International Trade (CIT), the federal court for customs disputes.
A protest is a formal challenge to a CBP decision on imported merchandise. Cornell Legal Information Institute explains that the CIT has exclusive jurisdiction over denied protests under Tariff Act section 515. That court path opens only after CBP denies the protest.
Table of Contents
- Where does the lawsuit go?
- How do you file a protest to protect a refund?
- What deadlines can bar your refund?
- What is different for IEEPA refunds now?
Where does the lawsuit go?
The CIT is not a small-claims office. It is the exclusive federal court for civil actions contesting denial of a protest. This keeps tariff disputes in one specialized court.
Only the importer behind the denied protest can use this path. A buyer down the supply chain cannot file in its place. The protest and the lawsuit belong to the same importer.
How do you file a protest to protect a refund?
CBP states in its protest filing guidance that importers must contest CBP decisions by protest under 19 U.S.C. 1514 within 180 days after liquidation. The filing generally uses CBP Form 19 or electronic filing. Liquidation starts the clock, so calendar that date.
Cornell Legal Information Institute describes the accelerated disposition rule in 19 C.F.R. 174.22. An importer can ask CBP to decide faster. If CBP neither allows nor denies the protest within 30 days after mailing the request, the protest counts as denied for court purposes.
- File protest within 180 days after liquidation.
- File on CBP Form 19 or electronically.
- Request accelerated disposition when waiting stalls court access.
- Count 30 days of silence after that request as denial for court purposes.
What deadlines can bar your refund?
Cornell Legal Information Institute notes the 180-day suit deadline for denied protests. Suit is barred unless filed in the CIT within 180 days after mailing of denial notice. The same 180-day bar applies after denial by operation of law.
Davis Wright Tremaine warns that CBP decisions become final if not protested within 180 days. Missing the protest or suit deadline can bar recovery. Firms preserve rights by protesting on time and filing a CIT summons if denied.
What is different for IEEPA refunds now?
Holland & Knight reports the current refund fight affects IEEPA-duty importers of record. It follows the Supreme Court's Feb. 20, 2026 decision in Learning Resources v. Trump that IEEPA does not authorize tariffs.
Only duties paid under that authority sit in this group. Davis Wright Tremaine reports in January 2026 analysis that importers may sue directly under residual CIT jurisdiction in 28 U.S.C. 1581(i). That route challenges tariff legality within two years of entry. It does not wait for protest denial.