US-China TariffsGlobal Trade Intelligence

Customs Audit Preparation and Response

21 April 2025·Updated Apr 2026·7 min read·GuideIntermediate
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In this article
  1. Customs Audit Preparation and Response
  2. Internal Compliance Reviews
  3. Responding to a CBP Request for Information
Key Takeaways

CBP audits can span 5 years of entries — how to prepare and what to expect during a focused assessment

  • Customs Audit Preparation and Response
  • Internal Compliance Reviews
  • Responding to a CBP Request for Information

Customs Audit Preparation and Response#

CBP conducts focused assessments targeting specific compliance areas: classification, valuation, marking, FTA claims, or AD/CVD. They typically review 3-5 years of entries and can impose penalties of 20-40% of lost revenue. Companies with prior disclosure programs fare much better — voluntary disclosure before an audit reduces penalties by 50-75%.

Internal Compliance Reviews#

Run your own audit annually. Pull 50-100 random entries and verify: correct HTS classification, proper valuation, accurate country of origin, valid FTA certificates, and proper marking. If you find errors, file prior disclosures immediately. Finding your own mistakes before CBP does is always cheaper.

💡 Key Insight

When CBP sends a CF-28 (Request for Information) or CF-29 (Notice of Action), respond within 30 days.

Responding to a CBP Request for Information#

When CBP sends a CF-28 (Request for Information) or CF-29 (Notice of Action), respond within 30 days. Late responses escalate to formal investigations. Engage a customs attorney if the inquiry involves significant duty exposure. Never ignore CBP correspondence — it never gets better with time.

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📊 By The Numbers
40%75%
Key Takeaways
  • CBP audits can span 5 years of entries — how to prepare and what to expect during a focused assessment

People also ask

What is the business impact of customs audit preparation and response?

CBP audits can span 5 years of entries — how to prepare and what to expect during a focused assessment

How can I prepare my business?

Start with visibility into your current exposure, benchmark against industry peers, and build a 90-day action plan targeting the highest-impact improvements first.

What tools help manage this?

AskBiz monitors trade conditions and provides real-time intelligence. Combine with customs management software, supply chain visibility platforms, and financial hedging tools for comprehensive coverage.

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