Is GST audit by CA mandatory?

No. Mandatory CA audit removed from FY 2020-21. GSTR-9C is self-certified for turnover above Rs 5 crore. But CAs essential for accurate reconciliation.

What is GSTR-9C threshold?

Aggregate turnover above Rs 5 crore on PAN-level all-India basis. All GSTINs need separate GSTR-9C even if individual turnover is below threshold.

What is Section 65 audit?

Departmental audit by GST officers at taxpayer premises. ADT-01 initiates. Completed in 3 months extendable by 6. Findings in ADT-02.

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GST Audit Services in Delhi: GSTR-9C Reconciliation and Departmental Audit Defence

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GSTR-9C Threshold: Mandatory self-certified reconciliation for aggregate turnover above Rs 5 crore (PAN-level)

GSTR-9 Threshold: Mandatory annual return for turnover above Rs 2 crore

Due Date: 31 December of the following financial year for both GSTR-9 and GSTR-9C

CA Assistance From: Rs 9,999 per GSTIN for GSTR-9C preparation and filing

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Overview What Is It Who Needs It Services Process Documents Challenges Fees Timeline Why Patron Audit Types FAQs

GST Audit Services for Delhi Businesses

📌 TL;DR - GST Audit in Delhi Services at a Glance

GST audit in Delhi encompasses three streams: (1) GSTR-9C self-certified reconciliation for turnover above Rs 5 crore, (2) departmental audit under Section 65 by GST Commissionerate Delhi, and (3) special audit under Section 66 ordered during investigation. Since Finance Act 2021 removed mandatory CA certification, GSTR-9C is self-certified - increasing both taxpayer responsibility and departmental scrutiny. Patron's Delhi CA team provides end-to-end GST audit covering GSTR-9/9C preparation, ITC reconciliation, Section 65 representation and demand prevention.

Parameter	Detail
Governing Law	CGST Act 2017 - S.2(13), S.35, S.44, S.65, S.66
GSTR-9C Threshold	Aggregate turnover > Rs 5 crore (PAN-level) - self-certified
GSTR-9 Threshold	Aggregate turnover > Rs 2 crore (mandatory)
Due Date	31 December following the financial year
Penalty	Rs 25,000 general penalty; S.73/74 demand for discrepancies
Section 65 Audit	Departmental audit by CGST/DGST officers - any taxpayer
Delhi GST Offices	GST Commissionerate Delhi (Central/North/South/East/West) \| DGST Delhi

Delhi has one of India's largest concentrations of GST-registered businesses - wholesale traders in Chandni Chowk, IT companies in Nehru Place, manufacturers in Okhla and corporates at Connaught Place managing multi-state operations. Delhi businesses frequently operate with multiple GSTINs across NCR (Delhi, Haryana, UP), creating unique aggregate turnover and multi-GSTIN GSTR-9C challenges.

Patron's Delhi CA team provides end-to-end GST audit services. Learn more about GST Audit across India. Related: GST Returns and GST Notice Response.

Content is reviewed quarterly for accuracy.

What is GST Audit?

GST audit is the examination of records, returns and documents maintained by a GST-registered person to verify correctness of turnover declared, taxes paid, input tax credit availed and refunds claimed (Section 2(13), CGST Act 2017).

Three streams: (1) GSTR-9C - self-certified reconciliation statement reconciling GSTR-9 with audited financials, mandatory for turnover > Rs 5 crore; (2) Section 65 departmental audit - conducted by CGST/DGST officers at taxpayer's premises, any registered person; (3) Section 66 special audit - directed by Commissioner during investigation.

For Delhi's trading firms in Chandni Chowk, manufacturers in Okhla and IT companies in Nehru Place, GSTR-9C reconciliation identifies mismatches between returns and books before the department does.

Since Finance Act 2021 removed mandatory CA certification, GSTR-9C is self-certified - but professional preparation remains essential for accuracy.

Key Terms for GST Audit in Delhi:

GSTR-9: Annual return consolidating all GSTR-1 and GSTR-3B data. Mandatory for turnover > Rs 2 crore.

GSTR-9C: Self-certified reconciliation statement between GSTR-9 and audited financials. Mandatory for turnover > Rs 5 crore.

Section 65: Departmental audit by CGST/DGST officers at taxpayer's premises. Any taxpayer, any time.

Section 66: Special audit ordered by Commissioner during investigation.

DRC-03: Voluntary payment of short-paid tax to prevent demand proceedings.

Aggregate Turnover: PAN-level, all-India computation including all GSTINs.

GST Compliance GST Audit Delhi

Who Needs GST Audit Services in Delhi?

Turnover > Rs 5 Crore (GSTR-9C Mandatory): Wholesale traders in Chandni Chowk, manufacturers in Okhla, IT companies in Nehru Place, corporates at Connaught Place. Multi-GSTIN NCR businesses require separate GSTR-9C per GSTIN.
Turnover > Rs 2 Crore (GSTR-9 Mandatory): Delhi businesses between Rs 2-5 crore must file GSTR-9. Reconciliation workpapers advisable for S.65 audit defence.
ADT-01 Notice Recipients (S.65 Audit): Any Delhi business can receive departmental audit notice regardless of turnover. Increased since GSTR-9C self-certification.
Businesses Under Investigation (S.66): If DGGI Delhi or anti-evasion units suspect wrong ITC or incorrect value, Commissioner orders special CA audit.
Multi-GSTIN Delhi NCR Businesses: GSTINs in Delhi + Haryana (Gurugram) + UP (Noida) - separate GSTR-9/9C per GSTIN with PAN-level aggregate computation.

GST Audit Services - What Patron Handles

Service	What We Do
GSTR-9 Annual Return	Consolidation of GSTR-1, 3B, 2B data. Reconciliation of outward/inward supplies, ITC, tax paid. HSN-SAC verification.
GSTR-9C Reconciliation	Part A: Turnover, tax, ITC reconciliation between GSTR-9 and audited financials. Part B: Certification with observations. Per GSTIN.
ITC Verification	GSTR-2B vs purchase register. Blocked credit S.17(5). RCM verification. Rule 42/43 reversal for common credit.
GSTR-1 vs 3B Reconciliation	Invoice-level matching of outward supplies. Under/over-reported supplies identification.
Section 65 Audit Representation	ADT-01 to ADT-02 full support. Document compilation, officer coordination, reply drafting, demand prevention.
DRC-03 Voluntary Payment	If discrepancies found during 9C preparation, voluntary payment to prevent S.73/74 demand with interest saving.
Pre-Audit Health Check	Proactive review before filing season - ITC mismatches, classification errors, RCM, e-way bill gaps.

Our Process

6-Step GST Audit Process for Delhi Businesses

Patron provides end-to-end GST audit from data compilation to GSTR-9C filing and departmental audit representation.

Step 1

Determine Applicability and Compile Data

Compute PAN-level aggregate turnover. If > Rs 5 crore, GSTR-9C mandatory for every GSTIN. Download GSTR-1, 3B, 2B for full FY from gst.gov.in. Obtain audited financials.

Turnover computedData downloadedMulti-GSTIN mapped

Data Ready01

Step 2

Prepare GSTR-9 Annual Return

Consolidate all GSTR-1 and GSTR-3B data. Reconcile outward supplies, inward supplies, ITC availed and tax paid across 12 months. HSN-SAC verification. Patron uses automated tools for high-volume matching.

Returns consolidatedITC reconciledHSN verified

GSTR-9 Ready02

Step 3

Prepare GSTR-9C Reconciliation

Reconcile GSTR-9 turnover with audited financials. Explain every difference - unbilled revenue, advances, credit notes, exempt supplies. Reconcile ITC. Report additional liability if any.

Turnover matchedITC reconciledDifferences explained

9C Prepared03

Step 4

Self-Certify and File on GST Portal

Authorised signatory self-certifies GSTR-9C on gst.gov.in. File before 31 December deadline. Patron prepares the complete 9C - signatory only needs to certify and submit.

Self-certifiedFiled on portalDeadline met

Filed04

Step 5

Address Discrepancies via DRC-03

If reconciliation reveals short-payment, file DRC-03 for voluntary payment with interest. Pre-emptive payment prevents S.73/74 demand proceedings and avoids penalty.

Discrepancies foundDRC-03 filedDemand prevented

Tax Corrected05

Step 6

Handle S.65 Departmental Audit (if initiated)

If GST Commissionerate Delhi issues ADT-01, audit is at your premises for 3 months (extendable). Patron provides full representation from ADT-01 through ADT-02 findings and demand prevention.

ADT-01 handledAudit attendedADT-02 managed

Audit Complete06

Documents Required for GST Audit

Document	Purpose
Audited Financial Statements	Balance Sheet, P&L, Cash Flow for the FY
All GSTR-1 Returns	Monthly/quarterly outward supply data
All GSTR-3B Returns	Summary returns showing tax liability and ITC
GSTR-2B Statements	Auto-populated ITC for each period
Purchase and Sales Registers	Invoice-level records matching GSTR-1/2B
E-Way Bills Register	Matching with invoice records for goods transport
ITC Register	Claimed, reversed, ineligible, blocked credits
RCM Records	Reverse charge payments with ITC claims
Credit/Debit Notes	All notes with GST treatment
Bank Statements	Turnover reconciliation - especially for cash-intensive businesses

Common GST Audit Challenges in Delhi

Challenge	Impact	How Patron Accounting Solves It
Multi-GSTIN GSTR-9C Filing	Delhi NCR businesses with GSTINs in Delhi + Haryana + UP need separate 9C per GSTIN with PAN-level aggregate	Patron handles PAN-level computation and separate filing for each GSTIN across NCR states
GSTR-1 vs 3B Mismatch	Chandni Chowk/Lajpat Nagar traders with thousands of invoices have timing and amendment differences	Patron uses automated reconciliation tools for high-volume invoice matching
Blocked ITC Under S.17(5)	Delhi companies availing ITC on motor vehicles, food, club memberships - blocked credits unreversed	Patron identifies blocked credits during reconciliation and advises DRC-03 strategy
Increasing S.65 Audits	GST Commissionerate Delhi increased departmental audits since self-certification removed CA oversight	Patron provides in-person representation at Delhi GST offices and demand prevention
RCM Non-Compliance	Nehru Place IT firms and CP professional services fail to discharge RCM on legal/security/GTA services	Patron reviews all RCM-applicable transactions and ensures compliance before filing

GST Audit Service Fees in Delhi 2026

Fee Component	Amount
Patron Accounting Professional Fees	Starting from INR 9,999 (Exl GST and Govt. Charges)
GSTR-9 Preparation + Filing	From Rs 4,999 per GSTIN
GSTR-9C Preparation + Filing	From Rs 9,999 per GSTIN
GSTR-9 + 9C Combined	From Rs 12,999 per GSTIN
Multi-GSTIN Package (3+)	From Rs 9,999 per GSTIN
Section 65 Audit Representation	From Rs 19,999
Pre-Audit Health Check	From Rs 7,999

All fees and charges listed are indicative only and do not constitute a binding offer. Final amounts may vary depending on the volume of work and the complexity involved.

Professional service charges for drafting, filing, and representation are separate from the statutory fees. The exact fee depends on the complexity of the case, disputed amount, and number of hearings required. Contact us for a detailed quote.

Get a free GST Audit in Delhi consultation - Call +91 945 945 6700 or WhatsApp us. No-obligation assessment.

GST Audit Timeline in Delhi

Stage	Estimated Timeline
Data compilation and download	3-5 working days
GSTR-9 preparation	5-10 working days
GSTR-9C reconciliation	5-10 working days
Self-certification and filing	1-2 days
DRC-03 filing (if needed)	1-2 days
Due date	31 December following the FY

Recommendation: Start GSTR-9/9C preparation by October to allow adequate time for reconciliation and discrepancy resolution before the 31 December deadline. Delhi NCR multi-GSTIN businesses should start even earlier.

Key Benefits

Why Choose Patron for GST Audit in Delhi

1,000+ GST Audits Completed

High-volume Delhi trading firms, multi-GSTIN NCR operations and complex manufacturing units in Okhla.

Multi-GSTIN NCR Expertise

PAN-level aggregate computation and separate GSTR-9C for Delhi, Haryana, UP GSTINs under same PAN.

Delhi Office for S.65 Audits

In-person representation at Section 65 audits by GST Commissionerate Delhi officers at your premises.

Automated Reconciliation

Technology-driven invoice matching for GSTR-1 vs books, GSTR-2B vs purchases - handling thousands of invoices.

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"Patron handled our GSTR-9C for three GSTINs. Their reconciliation report caught Rs 1.2 lakh in excess ITC we had missed - saving us from a potential demand."
- Manufacturing Company, Delhi NCR

4-Office Signal: Pune, Mumbai, Delhi, and Gurugram.

Types of GST Audit - Comparison

Type	Section	Who Initiates	Threshold
GSTR-9C Reconciliation	Section 44	Taxpayer (self-certified)	Turnover > Rs 5 crore
Departmental Audit	Section 65	GST Commissioner	Any taxpayer, any turnover
Special Audit	Section 66	Commissioner on reference	During scrutiny/investigation

Related Services for Delhi Businesses

GST Audit (India) - National-level GST audit services
GST Returns - Monthly/quarterly return filing
GST Notice Response - Notice handling and representation
GST Registration - New GSTIN registration
Tax Audit - Income tax statutory audit
Statutory Audit - Company audit compliance

Legal Framework for GST Audit

CGST Act 2017: S.2(13) (Audit definition), S.35 (Accounts), S.44 (Annual return), S.65 (Departmental audit), S.66 (Special audit), S.73 (Non-fraud demand), S.74 (Fraud demand).

Key Rules: Rule 80 (Annual return + reconciliation). CBIC Notification 29/2021 (GSTR-9C self-certification for Rs 5 crore+). Notification 15/2025 (GSTR-9 optional below Rs 2 crore for FY 2024-25).

Penalties: GSTR-9 late: Rs 200/day, max 0.25% turnover. GSTR-9C non-filing: Rs 25,000. S.73 demand: tax + interest. S.74 fraud: tax + interest + penalty equal to tax.

Delhi-Specific: Union Territory - CGST + DGST apply. GST Commissionerate Delhi across 5 zones. No state Professional Tax. DGGI Delhi active on S.66 special audits.

Source: GST Portal (gst.gov.in), CGST Act 2017

FAQs - GST Audit Services in Delhi

Expert answers about GST audit, GSTR-9C reconciliation and departmental audits in Delhi.

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Which GST office handles audits in Delhi?

GST Commissionerate Delhi operates across Central, North, South, East, West zones for S.65 departmental audits. CGST by Central officers, DGST by Delhi government officers. Audits at taxpayer's premises. Patron coordinates across all zones.

Is GST audit by CA still mandatory in 2026?

No. Mandatory CA audit removed from FY 2020-21. GSTR-9C is self-certified for turnover > Rs 5 crore. But businesses still engage CAs because reconciliation is complex and errors trigger S.73/74 demands.

What is the GSTR-9C threshold?

Aggregate turnover > Rs 5 crore (PAN-level, all-India). If Delhi + Haryana + UP GSTINs together exceed Rs 5 crore, every GSTIN needs separate GSTR-9C even if individual turnover is below threshold.

What is penalty for not filing GSTR-9C?

General penalty Rs 25,000. Non-filing increases risk of S.65 departmental audit. If department finds undisclosed discrepancies, S.73 demand (tax + interest) or S.74 (tax + interest + penalty equal to tax for fraud).

What is Section 65 departmental audit?

GST officers audit at your premises. ADT-01 initiates, completed in 3 months (extendable 6 months). Findings in ADT-02. If discrepancies found, S.73/74 demand may follow. Patron provides end-to-end representation.

What if discrepancies found during GSTR-9C?

File DRC-03 for voluntary payment of differential tax with S.50 interest. Pre-emptive payment prevents department demand and avoids penalty. Patron identifies discrepancies and advises optimal DRC-03 strategy.

How does aggregate turnover work for NCR businesses?

PAN-level all-India computation. Delhi Rs 3 crore + Haryana Rs 1.5 crore + UP Rs 1 crore = Rs 5.5 crore aggregate. All three GSTINs need GSTR-9C even though individual turnovers are below Rs 5 crore.

Quick Answers

GST audit ab mandatory nahi hai kya? CA se audit mandatory nahi hai FY 2020-21 se. Lekin Rs 5 crore se zyada turnover par GSTR-9C self-certified file karna zaroori hai. S.65 audit kisi bhi taxpayer par ho sakta hai.

GSTR-9C kab tak file karna hai? 31 December - financial year ke baad.

Multi-GSTIN hai toh? Har GSTIN ka alag GSTR-9 aur 9C file karna padega. Aggregate turnover PAN level par calculate hota hai.

Don't Miss the 31 December GSTR-9C Deadline

Missing the GSTR-9C deadline exposes your business to Rs 25,000 penalty and increased risk of Section 65 departmental audit. GSTR-9C is your opportunity to identify and correct discrepancies through DRC-03 before the department finds them.

Start your GST audit now: Call +91 945 945 6700 or WhatsApp us.

Get Expert GST Audit Services in Delhi

GST audit in Delhi encompasses GSTR-9 preparation, GSTR-9C reconciliation and Section 65 departmental audit representation. With Delhi's concentration of wholesale trading, IT services, manufacturing and multi-GSTIN NCR operations, professional CA assistance is essential for accurate reconciliation and compliance.

Patron's Delhi office at Rohini provides end-to-end GST audit - data compilation, automated reconciliation, GSTR-9C preparation, DRC-03 filing and S.65 representation. 1,000+ GST audits, 15+ years, offices in Pune, Mumbai, Delhi, and Gurugram.

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GST Audit Services Across India

Patron provides GST audit services in major cities.

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Content Created: 07 April 2026 | Last Updated: 07 April 2026 | Next Review: 07 April 2027 | Reviewed By: CA & CS Team, Patron Accounting LLP

This page covers GST audit services in Delhi. Reviewed annually when CGST Act provisions or GSTR-9C thresholds change.