# External Customs Compliance Audits

*Last updated: 2026-06-24*

> Unlike internal compliance reviews, external customs compliance audits are conducted by independent specialists – customs consultants, audit firms, or trade compliance advisors – who assess a company's customs processes against applicable law.

Unlike internal compliance reviews, external customs compliance audits are conducted by independent specialists – customs consultants, audit firms, or trade compliance advisors – who assess a company's customs processes against applicable law. They examine tariff classification under the Harmonized System (HS), customs valuation, rules of origin declarations, preferential trade agreement eligibility, and procedural documentation. Findings are compiled into a structured report that identifies gaps, quantifies financial exposure from potential duty underpayments, and sets out corrective actions in order of priority. Companies typically commission external audits ahead of AEO (Authorised Economic Operator) applications, following significant changes to their supply chain or product range, or in preparation for an expected customs authority review.

**Source:** [https://www.pwc.com/us/en/services/tax/library/customs-compliance-audit.html](https://www.pwc.com/us/en/services/tax/library/customs-compliance-audit.html)

## Quick Facts

| Property | Value |
|---|---|
| Term | External Customs Compliance Audits |
| Language | EN |
| Word count | 111 |
| Last updated | 2026-06-24 |
| Source | https://www.pwc.com/us/en/services/tax/library/customs-compliance-audit.html |

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