GST Audit Services — GSTR-9C Filing, ITC Reconciliation & GST Department Audit Support

GST Audit Services in India

GST compliance in India is not a one-time event — it is a continuous obligation that runs through every business transaction, every month, every year. Filing GSTR-1 and GSTR-3B on time is the floor, not the ceiling. Beneath those monthly returns lies a far more complex compliance picture: input tax credit that must be reconciled and verified, output tax that must match across GSTR-1, GSTR-3B, and the books, annual returns in GSTR-9 that must tie back to twelve months of monthly filings, and a GSTR-9C reconciliation statement that certifies — on a CA's professional authority — that the annual return is true and correct.

A letter from the GST department requesting documents, records, or reconciliation statements under Section 65 or Section 66 of the CGST Act is one of the most stressful situations a business owner or CFO can face — particularly when the underlying GST records are not well-maintained. The consequences of a poorly handled GST audit range from demand notices and penalties to prosecution in serious cases.

N D Savla & Associates provides comprehensive GST audit services for businesses across Mumbai and India — covering GSTR-9 and GSTR-9C preparation and filing, ITC reconciliation, GST health checks, and end-to-end support through GST department audits and notices.

What Is a GST Audit? — Three Different Meanings You Must Know

• Departmental GST Audit (Section 65, CGST Act) — An audit conducted by a GST officer authorised by the Commissioner. The officer examines the taxpayer's books of accounts, records, and returns to verify the correctness of turnover declared, taxes paid, input tax credit claimed, and refunds received.
• Special Audit (Section 66, CGST Act) — Where the GST officer believes that the value of supply or ITC is not correctly determined, they can direct the taxpayer to get their accounts audited by a nominated CA or Cost Accountant. The nominated auditor submits a report to the department within 90 days.
• Annual GST Return Filing — GSTR-9 and GSTR-9C — Commonly referred to as the "GST audit" in business circles, GSTR-9C is a reconciliation statement certified by a CA that compares the annual GST return (GSTR-9) with the audited financial statements. GSTR-9C is mandatory for taxpayers with annual aggregate turnover above ?5 crore.

GST Audit — Three Types at a Glance

Who Needs GST Audit Services in India?

• Businesses with turnover above ?5 crore — GSTR-9C reconciliation statement must be filed by a CA for taxpayers with annual aggregate turnover above ?5 crore. This is mandatory — not optional — and carries significant professional liability for the certifying CA and financial exposure for the business if incorrectly prepared.
• Businesses that have received a GST department notice — Any letter from the GST department — whether under Section 65 (audit), Section 71 (access to premises), Section 73 (demand for tax not paid), or Section 74 (fraud/suppression) — requires an immediate, carefully considered response.
• Businesses with high ITC claims — Businesses that claim significant input tax credit — particularly those with complex supply chains, imports, capital goods, or multiple GSTINs — need a periodic ITC reconciliation to verify that all ITC claimed is reflected in GSTR-2B, supported by valid invoices, and not blocked under Section 17(5).
• Exporters claiming GST refunds — Exporters claiming refund of ITC or IGST paid on export supplies face regular scrutiny. A GST audit review of the export documentation, LUT/bond compliance, and refund claim calculations significantly reduces the risk of refund rejection or demand notice.
• Real estate developers — Real estate GST is among the most complex areas of Indian tax law — with different rates for affordable housing, commercial projects, and ongoing projects, complex ITC reversal requirements, and the transition between pre-GST and post-GST contracts.
• E-commerce operators and sellers — E-commerce operators are subject to TCS obligations under Section 52 of the CGST Act, and e-commerce sellers face additional reconciliation requirements between marketplace-reported sales and their own GSTR-1 filings.
• Manufacturing companies with job work arrangements — GST treatment of job work under Section 143 of the CGST Act creates specific compliance requirements — goods sent for job work must be tracked, the 1-year / 3-year return period must be monitored, and ITC on inputs sent for job work must be correctly maintained.

For businesses that need GST registration or want to ensure their GST returns are consistently filed on time alongside the audit exercise, our GST Return Filing services cover monthly GSTR-1 and GSTR-3B filing, annual GSTR-9, and GSTR-9C preparation.

GSTR-9 and GSTR-9C — What They Are and Why They Matter

GSTR-9 — The Annual GST Return

GSTR-9 is the annual return that every regular GST taxpayer must file for each financial year. It consolidates the details of all outward and inward supplies made and received during the year, all taxes paid, and all ITC claimed — reconciling twelve months of monthly returns into a single annual statement. GSTR-9 is due by 31 December following the end of the financial year (subject to extensions notified by the CBIC).

Filing GSTR-9 correctly requires reconciling GSTR-1 with GSTR-3B for each month, identifying differences between ITC claimed in GSTR-3B and ITC available in GSTR-2B, accounting for amendments made in subsequent months, and correctly disclosing ITC reversals, exempt supplies, and nil-rated supplies.

GSTR-9C — The Reconciliation Statement (CA Certified)

GSTR-9C is a reconciliation statement that compares the figures in GSTR-9 (the annual GST return) with the audited financial statements of the business. It is prepared and certified by a Chartered Accountant — who takes professional responsibility for the accuracy of the reconciliation. GSTR-9C is mandatory for taxpayers with annual aggregate turnover above ?5 crore and is filed on the GST portal along with GSTR-9.

GSTR-9C certification covers: reconciliation of turnover declared in GSTR-9 with turnover as per audited financial statements; reconciliation of ITC declared in GSTR-9 with ITC as per financial statements; and certification that the information furnished is true and correct. The CA who certifies GSTR-9C must satisfy themselves — not just rely on management representations — that the figures are correct. This requires a thorough GST audit of the underlying records.

How We Conduct a GST Audit — Our 8-Step Process

1. GST Registration and Return Review — We review the taxpayer's GST registration details — HSN/SAC codes registered, nature of supply, GSTIN-wise structure for multi-location businesses, and LUT/bond status for exporters. We then download all GSTR-1, GSTR-3B, and GSTR-2B data for the year and cross-match the returns for each month — identifying differences in output tax, ITC claimed vs available, and amendments filed.
2. Books-to-Returns Reconciliation — We reconcile the figures in the GST returns against the books of accounts — checking that sales per GSTR-1 match revenue in the P&L (after adjusting for exempt, nil-rated, and non-GST supplies), that ITC claimed in GSTR-3B matches the purchase register and GSTR-2B, and that GST liability as per GSTR-3B matches the GST payable ledger.
3. ITC Reconciliation and Blocked Credit Review — We reconcile ITC claimed in GSTR-3B against GSTR-2B for each month, identify ITC claimed but not reflecting in GSTR-2B, and verify that no blocked credit under Section 17(5) — such as ITC on motor vehicles, food, club memberships, or construction services for own use — has been incorrectly claimed.
4. Output Tax Verification — Rate Classification and Exemptions — We verify that the correct GST rate has been applied on every category of supply — checking HSN/SAC classification, applicable rate notifications, and exemption eligibility. Rate misclassification is one of the most common GST audit findings — particularly for businesses with diverse product portfolios, composite or mixed supplies, or products in disputed classification categories.
5. Reverse Charge Mechanism (RCM) Compliance — We verify that reverse charge obligations — under Section 9(3) and Section 9(4) of the CGST Act — have been correctly identified, reported, and paid. Common RCM supplies include legal and advocate services, goods transport agency services, import of services, and security services. RCM non-compliance is frequently targeted in GST department audits.
6. E-way Bill and E-invoice Reconciliation — For businesses above the e-invoice threshold, we verify that e-invoices have been generated for all applicable B2B supplies and that the IRN details are correctly reported in GSTR-1. For goods movements, we reconcile e-way bills generated against dispatches recorded in the books and GSTR-1.
7. GSTR-9 Preparation and GSTR-9C Certification — Based on the reconciliation work done in prior steps, we prepare the GSTR-9 annual return — populating all tables accurately, disclosing additional liability identified during reconciliation, and reporting ITC reversals. We then prepare and certify the GSTR-9C reconciliation statement — reconciling GSTR-9 figures with the audited financial statements and certifying correctness on the CA's professional authority.
8. Department Audit Support and Notice Response — Where a GST department audit notice has been received under Section 65 or a demand notice under Section 73 or 74, we prepare a comprehensive response — compiling all supporting documents, preparing reconciliation statements in the format required by the audit officer, attending the audit in person where required, and drafting the written response to each audit observation.

Where a GST department demand order has been issued and the business needs to file an appeal, our GST Appeal services cover appeal drafting, representation, and pre-deposit strategy.

Common GST Audit Findings — What the Department Looks For

GST Health Check — Proactive Protection Before a Department Notice Arrives

One of the most valuable GST audit services we provide is the proactive GST health check that businesses commission voluntarily, before they hear from the department. A GST health check covers:

• Full GSTR-1 vs GSTR-3B vs GSTR-2B reconciliation — For up to 3 financial years, identifying all discrepancies that remain open and quantifying the aggregate exposure.
• ITC eligibility review — Every ITC claimed is reviewed for eligibility — blocked credit, time bar under Section 16(4), supplier non-compliance, and proportionate reversal requirements.
• Rate and classification review — Key supply categories are reviewed for correct HSN/SAC and rate application — with reference to recent AAAR/AAR rulings and CBIC circulars relevant to the business.
• RCM obligation mapping — All services and goods procured from unregistered suppliers or notified categories are mapped against RCM obligations — identifying what has been paid and what remains outstanding.
• Exposure quantification and corrective filing plan — The total GST exposure (tax + interest + penalty) identified is quantified, and a phased corrective filing plan is prepared — using DRC-03 voluntary payments, amended returns, and ITC adjustments to close the exposure in a managed, defensible way.

For businesses that want comprehensive GST advisory — covering registration, planning, structuring of transactions, and ongoing compliance — alongside the audit exercise, our GST Consultancy services provide end-to-end GST support from registration to litigation.

GST Audit for Specific Industries — Key Focus Areas

Manufacturing and Trading Companies

ITC reconciliation across raw material and packing material purchases; job work compliance under Section 143; HSN classification of finished goods; stock transfer between branches; e-way bill reconciliation for all goods movements.

Real Estate Developers

Rate classification — affordable vs non-affordable housing; ITC reversal under Rule 42 for mixed residential/commercial projects; GST on advance payments received from buyers; transition from pre-GST to post-GST contracts; GST on development rights (TDR/FSI).

Service Companies — IT, Consulting, Financial Services

Place of supply determination for cross-state and cross-border services; export of services compliance (LUT/bond, remittance receipt, bank realisation certificate); ITC on office expenses and employee costs; GST on ESOPs and other non-cash benefits.

E-commerce Operators and Marketplace Sellers

TCS compliance under Section 52 for e-commerce operators; reconciliation of marketplace-reported sales with GSTR-1; state-wise turnover reconciliation for multi-state GST registrations; returns handling and credit note compliance.

For businesses that also need GST registration for new entities or branches, our GST Registration services cover new GST registration, amendment, and revocation across all states.

Why N D Savla & Associates for GST Audit Services

• Deep CGST Act expertise. Our GST audit team has worked on GST compliance since the law's inception in July 2017 — through multiple rounds of rule changes, rate revisions, and CBIC circulars. We know the current law, not just the law as it was when we last looked.
• ITC reconciliation as a core competency. Input tax credit reconciliation is the highest-value, highest-risk area of any GST audit. We treat it as a primary deliverable — not an afterthought — with a structured, documented reconciliation that stands up to department scrutiny.
• Department audit experience. We have represented taxpayers in GST department audits under Section 65 and Section 66, and in proceedings under Section 73 and Section 74. We know what GST officers look for, what documentation they request, and how to present a client's position most effectively.
• GSTR-9C certification responsibility taken seriously. We do not certify GSTR-9C on the basis of management representations alone. We conduct the underlying reconciliation work ourselves — so the certification is based on evidence, not trust.
• Multi-GSTIN and multi-state capability. For businesses with multiple GSTINs across states, we handle the full multi-state GST audit — state-wise reconciliation, IGST cross-state supply verification, and consolidated GSTR-9C filing.
• Partner-supervised engagement. Every GST audit is supervised by a qualified Chartered Accountant partner. The GSTR-9C certification and department audit responses carry professional CA sign-off and accountability.

Frequently Asked Questions — GST Audit in India