CBP Form 28 (CF28) is a Request for Information from CBP regarding a specific entry or transaction. Response is required within the deadline stated (typically 30 days). Common topics: classification, valuation, country of origin, FTA preference. Inadequate response can escalate to CF29 (Notice of Action) or focused assessment.
This guide covers CBP Form 28 Response Guide. Customs compliance audit work covers CBP focused assessments, CBSA Trade Compliance Verifications, and ongoing compliance program work.
For SMB importers, the practical implementation depends on volume, sector, and operational structure.
What CF28 requests
Documentation supporting specific aspects of an entry – entry summary breakdown, commercial invoice details, BOM, USMCA Certificate.
Response timing
Typically 30 days from CF28 issuance. Extensions can be requested for complex requests.
Response content
Direct response to specific questions, supporting documentation, narrative explaining the importer’s position.
Escalation risk
Inadequate or missing response can trigger CF29 (Notice of Action) with rate change, or focused assessment.
Frequently asked questions
When is this most relevant?
For SMB importers facing audit, refund opportunity, or compliance gap remediation.
What documentation matters?
CBP forms, supporting records, supplier certificates, and BOM analysis as applicable.
What is the timeline?
Simple matters 2-4 weeks; complex audits or refund filings 3-12 months.
What does this cost?
Project scope $5,000-$45,000 depending on complexity. Refund work often on contingency.
How do I begin?
Book a 15-minute scoping call. We confirm fit before any engagement.
Get started
Already received an audit notice? Contact us within 48 hours.