Common triggers include: a pattern of HTS classification inconsistencies across entries for similar products; declared values that deviate materially from comparable products in the same industry; import activity in sectors that CBP has designated as higher compliance risk; or a prior history of entry errors, penalties, or liquidated-damages claims. Import volume alone is not the selection criterion — a smaller importer with persistent classification anomalies can attract an FA just as readily as a high-volume importer with a clean compliance record.
What happens during a Focused Assessment?
CBP typically issues a notification letter requesting a defined set of records — entry summaries, commercial invoices, classification worksheets, and documentation of internal compliance procedures — covering a multi-year lookback period. The audit team reviews these records for systemic errors, evaluates whether the importer's internal controls are adequate to prevent recurring mistakes, and may conduct on-site interviews or request additional documentation as the review progresses. If the audit identifies duty underpayments, CBP will issue a demand for the underpaid amount plus interest, and if the findings indicate negligence or willful misconduct, penalties may be assessed on top of the duty recovery. The process from notification to final determination can extend over several months.
How to maintain day-to-day audit readiness
Maintain consistent HTS classification practices across entries — using different codes for the same product on different shipments creates a pattern that audit algorithms flag. Keep a basic internal compliance file per product or SKU: the classification rationale, the applicable duty rate, the Certificate of Origin if relevant, and records of broker communications for each entry. These records serve two purposes: they are the first thing CBP requests in an audit, and their existence (or absence) is itself a signal of the importer's compliance maturity. For classification questions where the correct HTS code is genuinely ambiguous, obtain a binding ruling from CBP proactively rather than guessing and correcting later — the binding ruling provides legal certainty, whereas a pattern of post-entry corrections on the same classification question can itself become an audit trigger.
Risk mitigation / operational guidance
Engage a qualified customs attorney or licensed consultant at the first indication of an FA notification — the response to CBP's initial document request sets the tone for the entire audit, and professional representation improves the likelihood of a contained resolution. Do not assume that because a customs broker recommended a classification, the importer is shielded from liability — the importer of record bears ultimate legal responsibility, so independently verify classification decisions that affect high-duty or high-volume product lines. Voluntary self-disclosure of discovered errors, made before CBP identifies them through audit, significantly reduces penalty exposure compared to errors that CBP discovers on its own.