GST Audit (GSTR-9 & 9C)

What GST audit and reconciliation mean today

GST audit refers to the verification of your GST records, returns and reconciliations to confirm that the tax you declared, paid and claimed is correct. Since the abolition of the mandatory CA-certified audit, the key annual obligation for larger taxpayers is the self-certified reconciliation statement in Form GSTR-9C, filed alongside the annual return GSTR-9. GSTR-9C reconciles the turnover and tax in your audited financial statements with what you reported in your GST returns.

Separately, the department conducts its own GST audits under section 65 (departmental audit) and special audits under section 66. Whether you are preparing GSTR-9/9C or responding to a departmental audit notice, the work is the same at heart: clean reconciliations that stand up to scrutiny.

Who needs GSTR-9 and GSTR-9C

• GSTR-9 (annual return): every regular registered taxpayer above the prescribed turnover threshold for the year.
• GSTR-9C (reconciliation statement): taxpayers with aggregate annual turnover above ₹5 crore.
• Any taxpayer selected for a departmental audit under section 65 or a special audit under section 66.
• Businesses wanting a voluntary health-check before a notice arrives.

The reconciliations that matter

• Turnover in financial statements vs GSTR-1 and GSTR-3B.
• Input tax credit claimed in GSTR-3B vs GSTR-2B and the books.
• Tax paid vs tax payable, including reverse charge.
• Output tax on advances, credit notes and amendments.

Key dates and penalties

GSTR-9 and GSTR-9C for a financial year are due by 31 December of the following year. Late filing of the annual return attracts a late fee per day (subject to caps based on turnover), and any short-paid tax surfaced in reconciliation carries interest at 18% per annum plus potential penalties. Mismatched ITC is increasingly auto-flagged by the system, so unreconciled credit is a frequent trigger for ASMT-10 scrutiny notices. Reconciling proactively is far cheaper than defending later.

Documents required

• Audited/finalised financial statements and trial balance.
• All GSTR-1, GSTR-3B and GSTR-2B data for the year.
• Purchase and sales registers, e-invoice and e-way bill data.
• Details of ITC reversals, RCM and amendments.

Why TCC for GST audit & reconciliation

Our experts reconcile your books with every GST return, surface and fix mismatches before they become notices, and file accurate GSTR-9/9C — and if a departmental audit notice arrives, we represent you. Notice handling is built in. Fixed fee, deadline-safe.