GSTR-9C Reconciliation Statement — Filing, Audit & Certification Guide 2026

What is GSTR-9C?

In my 15+ years handling GST compliance for businesses in Karol Bagh and Connaught Place, GSTR-9C is the return that causes the most anxiety. It is essentially the GST equivalent of a tax audit — a reconciliation statement that certifies your annual GST returns are accurate and match your audited financial statements.

GSTR-9C is a reconciliation statement that must be filed along with GSTR-9 (Annual Return) by every registered person whose aggregate turnover exceeds ₹5 crore in a financial year. It bridges the gap between what you reported in your GST returns and what appears in your audited accounts.

Who Must File GSTR-9C

GSTR-9C is mandatory for:

• Every registered person with aggregate turnover exceeding ₹5 crore in the financial year
• This includes regular taxpayers, regardless of business type (proprietorship, partnership, LLP, company)

GSTR-9C is NOT required for:

• Taxpayers with aggregate turnover up to ₹5 crore
• Input Service Distributors (ISD)
• Composition scheme taxpayers
• Non-resident taxable persons
• TDS/TCS deductors/collectors

GST Audit Requirements

Before filing GSTR-9C, the taxpayer must get their accounts audited by a Chartered Accountant or Cost Accountant. The GST audit covers:

1. Verification of turnover: Whether the turnover declared in GST returns matches the audited financial statements
2. ITC verification: Whether all ITC claimed is eligible and supported by invoices and GSTR-2A/2B
3. Tax payment verification: Whether the correct tax has been paid and on time
4. Compliance check: Whether all applicable returns were filed on time
5. Reconciliation of input vs output: Whether the credit chain is complete and accurate

The auditor must be a practicing CA or CMA. In Delhi, I have worked with several CAs in Connaught Place and Janakpuri who specialize in GST audit — it is important to choose an auditor who understands both accounting and GST law.

Reconciliation Process

The core of GSTR-9C is reconciliation. Here are the key areas that must be reconciled:

1. Turnover Reconciliation:

• GST returns turnover (GSTR-1 + GSTR-3B) vs Audited P&L turnover
• Reasons for differences: exempt supplies, non-GST supplies, advances received, credit notes

2. ITC Reconciliation:

• Total ITC claimed in GSTR-3B vs ITC available as per GSTR-2A/2B
• ITC on inward supplies vs outward supplies
• ITC reversal for exempt supplies, personal use, and other disallowances

3. Tax Paid Reconciliation:

• Tax paid through cash ledger vs tax liability declared
• Tax paid via ITC utilization vs ITC available
• Late fees and interest paid

CA/CMA Certification

The GSTR-9C must be certified by a practicing Chartered Accountant or Cost and Management Accountant. The certification confirms that:

1. The reconciliation statement has been prepared based on the audited financial statements
2. All material discrepancies have been identified and explained
3. The taxpayer has made necessary adjustments in the reconciliation
4. The statement is true and correct to the best of the auditor's knowledge

The certifying professional must include their membership number and digital signature. Filing GSTR-9C without proper certification is invalid and may attract penalty.

Step-by-Step Filing Process

Here is the process I follow for every GSTR-9C filing:

1. Complete GSTR-9 first — GSTR-9C can only be filed after GSTR-9 is filed
2. Get accounts audited — By a practicing CA/CMA
3. Prepare reconciliation statement — Compare GSTR-9 data with audited financials
4. Identify and explain differences — Document reasons for every material variance
5. Make adjustments — For any additional liability or additional credit identified
6. Get CA/CMA certification — The auditor reviews and certifies the statement
7. File GSTR-9C on GST portal — Upload the certified reconciliation statement
8. Pay any additional liability — Through FORM DRC-03 if required

Common Discrepancies Found

Based on my experience with businesses across Delhi, here are the most frequent discrepancies found during GSTR-9C reconciliation:

1. ITC over-claimed: ITC claimed in GSTR-3B exceeds what is available in GSTR-2A/2B — often due to invoices from unregistered or non-filing vendors
2. Turnover mismatch: GST returns show lower turnover than audited P&L — due to advances received but not yet supplied, or exempt income not reported
3. Exempt supply ITC: ITC not reversed proportionately for exempt supplies — requires reversal under Rule 42 and Rule 43
4. Blocked credits: ITC claimed on Section 17(5) items — motor vehicles, construction, food, travel
5. Reverse charge gap: Reverse charge liability not reported correctly in GSTR-3B
6. Credit note adjustment: Credit notes issued but not adjusted in returns, or adjusted in wrong period

Common Mistakes in GSTR-9C

1. Filing GSTR-9C before GSTR-9: The portal will not allow it. Complete GSTR-9 first.
2. Using an unqualified auditor: Only practicing CA/CMA can certify. Company internal auditors without practice certificate cannot.
3. Not reconciling GSTR-2A: Many businesses in Okhla skip the GSTR-2A reconciliation and only match P&L figures. This misses the most critical ITC discrepancies.
4. Ignoring Section 17(5): Not checking for blocked credits is the single most common audit finding.
5. Late filing: Late fee of ₹200 per day (₹100 CGST + ₹100 SGST) applies, maximum 0.5% of turnover. For a ₹10 crore business, this can be ₹5 lakh.

Frequently Asked Questions