Tariff Refund HQ

Customs Protest Guide

CBP Form 19 protest planning with deadline control, legal-ground selection, and evidence discipline.


Protest viability depends on the entry facts, filing window, and legal theory asserted. A strong customs protest process starts with entry-level triage, then aligns documentation and argument structure before submission to reduce preventable denials and supplemental request cycles.

What a protest-ready file should include


  • ✓Clear entry identifiers and liquidation-status confirmation
  • ✓Specific legal/factual basis for relief tied to the transaction record
  • ✓Commercial documentation consistent across invoice, entry, and broker data
  • ✓Supporting calculations and timeline chronology where applicable
  • ✓Internal reviewer sign-off before filing transmission

Execution risks to avoid


  • ✕Waiting until late-stage review to confirm deadline posture
  • ✕Submitting broad arguments without entry-specific grounding
  • ✕Separating legal narrative from source records and calculation support
  • ✕Failing to maintain an auditable filing and follow-up timeline

Related guidance

Review Deadlines Center for timing controls andDocuments Library for file prep standards.