This course covers the customs audit framework under Chapter XIIA of the Customs Act 1962 — Sections 99A through 99E — read alongside Chapter 34 of the Indian Customs Manual 2025. Customs audit is the post-clearance verification mechanism through which the Customs Department examines the books, accounts, and records of importers, exporters, and customs brokers to establish whether duty has been correctly assessed and paid — and CBLE has increasingly tested this area as the shift from transaction-level examination to post-clearance audit has become a defining feature of India's trade facilitation architecture.

The course opens with Section 99A — the legal authority for post-clearance audit — explaining that any officer not below the rank of Assistant Commissioner may audit the accounts and records of importers and exporters within the prescribed period after clearance of goods. The distinction between transaction-level assessment (at the time of filing the Bill of Entry) and post-clearance audit (after goods have been cleared) is treated as a foundational CBLE concept since it represents a fundamental shift in how customs oversight operates in a self-assessment environment. In a self-assessment system where the importer determines duty liability, post-clearance audit is the primary verification tool available to the department — and the course explains why this makes the audit framework the natural successor to the assessment framework covered in Course 4.

The two modes of audit under the Customs Manual are covered in full. Off-site audit involves the customs officer examining copies of import and export documents, accounts, and records obtained from the importer or exporter without visiting the importer's premises — the less intrusive mode used for lower-risk profiles. On-site audit involves the audit officer visiting the importer's or exporter's business premises to examine books of account, financial records, stock records, and other documents in situ — used for higher-risk profiles or where off-site examination reveals issues requiring deeper investigation. The risk-based selection of auditees — using the Risk Management System to identify importers and exporters whose transactions warrant post-clearance scrutiny — is addressed as the operational trigger for audit, since not every importer is audited and selection is based on objective risk criteria.

The procedure for conducting audit under Chapter 34 of the Customs Manual is covered step by step: the issue of an audit notice to the auditee with sufficient advance notice, the auditee's obligation to make available books and records, the audit officer's right to access premises under Section 99B, the preparation of the audit report, and the issue of an audit memo where discrepancies are found. The critical post-audit demand linkage is treated as a high-priority CBLE topic: where the audit reveals short-payment or non-payment of duty, the proper officer initiates demand proceedings under Section 28 — connecting the audit framework directly to the demand and recovery framework covered in Course 23. The course explains the time limit implications for Section 28 demands arising from audit findings — particularly whether the extended five-year period applies where the audit reveals suppression or misdeclaration — since this interaction between audit findings and Section 28 time limits is a CBLE scenario question pattern.

The rights of the auditee during the audit process — including the right to be heard on discrepancies noted in the audit memo before a formal demand is issued, and the right to produce additional evidence — are addressed alongside the Authorised Economic Operator (AEO) programme's interaction with the audit framework, since AEO-certified importers benefit from reduced frequency of post-clearance audit as a trade facilitation benefit. Chapter 34 of the Customs Manual is mapped throughout for the operational workflow including the role of the Audit Commissionerate, the coordination between the audit function and the intelligence function, and the annual audit plan mechanism.