Strategic Handling of GST Departmental Audits under Section 65 of the CGST Act
Goods and Services Tax audits initiated by the department are often perceived as an exercise focused only on discovering additional tax liability. In reality, a departmental audit under Section 65 of the CGST Act is a structured review of an assessee’s GST compliance, documentation, and explanations supporting the positions taken in returns.
Rather than reacting defensively to Form GST ADT-01, it is far more effective for the assessee and professionals to treat it as an opportunity to:
- Validate the correctness of GST reporting
- Identify and rectify genuine mistakes
- Demonstrate that positions adopted are backed by law, facts and records
This article explains a practical approach to handling a GST departmental audit starting from reconciliation, moving through key audit focus areas, and culminating in a structured method for replying to audit observations.
1. Understanding GST Departmental Audit under Section 65
Section 65 of the CGST Act empowers the department to conduct an audit of any registered person.
1.1 Statutory framework
- The proper officer may undertake an audit of any registered person.
- The assessee is generally informed about commencement of audit through Form
GST ADT-01. - The audit is conducted at the office of the department or at the place of business of the assessee, as communicated.
From the professional standpoint, while Form GST ADT-01 may mark the formal beginning of the departmental exercise, effective audit handling begins much earlier—through internal checks, reconciliations and documentation readiness.
1.2 Audit as a compliance health check
Instead of assuming that every audit will inevitably convert into a tax demand, it is more useful to view it as:
- A thorough review of GST positions already adopted
- A test of the robustness of records and internal controls
- A chance to identify and correct process gaps for future periods
When approached this way, a departmental audit becomes an extension of compliance management rather than only a risk event.
2. Begin with Robust Reconciliation of Books and GST Returns
A strong reconciliation exercise is the foundation of any well-managed departmental audit. Before responding to the officer’s requisition, the assessee should internally reconcile key figures between:
- Books of account (financial statements, ledgers)
- GSTR-1, GSTR-3B
- GSTR-2B
- E-invoices and e-way bills, wherever applicable
2.1 Turnover reconciliation: Books vs GST returns
Differences in turnover are among the first items that attract audit attention. However, a variance is not automatically proof of short payment of tax. Typical reconciling items include:
- Sale of fixed assets reflected in books but shown separately or not forming part of outward taxable turnover in returns
- Credit notes or debit notes impacting turnover in one period in books and in a different period in returns
- Non-GST income such as interest, dividend, or other receipts not liable to GST
- Journal entries for year-end provisions, write-offs or transfers that alter ledger balances but do not affect taxable supplies
The focus should be on preparing a structured reconciliation statement that:
- Starts with turnover as per audited financial statements
- Reconciles it with outward supplies as per GSTR-1 / GSTR-3B
- Clearly explains each difference with documentary support
2.2 Input Tax Credit reconciliation: Books, GSTR-3B and GSTR-2B
Variations in Input Tax Credit (ITC) between:
- ITC as per books
- ITC availed in GSTR-3B
- ITC reflected in GSTR-2B
should never be accepted or rejected blindly. Each difference needs to be analysed. Possible reasons include:
- Timing differences between invoice date and reflection in GSTR-2B
- Amendments in invoices or credit notes uploaded in later periods
- Invoices relating to exempt or non-business supplies recorded in books but not eligible for ITC
- Reversal of ITC under rules relating to blocked credits, non-payment to suppliers, or exempt supplies
A reconciliation should:
- Identify invoices appearing in books but not in GSTR-2B
- Identify invoices appearing in GSTR-2B but not recorded in books
- Map ITC availment and reversals in GSTR-3B to underlying transactions
This enables the assessee to establish whether the difference is a legitimate timing issue, a missed credit, an excess credit, or an ineligible ITC situation.