Rated 4.9/5 by 312+ Chennai clientsZero penalty record across all filings24-hour response · WhatsApp-first supportOffices: Maduravoyal, Nerkundram & Nolambur (upcoming)15+ years of expert tax & compliance consulting500+ active clients across 243 Chennai areasRated 4.9/5 by 312+ Chennai clientsZero penalty record across all filings24-hour response · WhatsApp-first supportOffices: Maduravoyal, Nerkundram & Nolambur (upcoming)15+ years of expert tax & compliance consulting500+ active clients across 243 Chennai areas
Trusted GST Audit Support Consultants · Ambattur SIDCO (PIN 600098)

GST Audit Support near SIDCO Industrial Estate, Ambattur SIDCO

Serving Ambattur SIDCO, Ambattur Industrial Estate and the wider Ambattur belt — handled by a qualified, in-house team

GST Audit Support for Ambattur SIDCO firms under Chennai North (Ambattur Division) — transparent scope, no surprises, and a filed acknowledgement back to you. Call 9566-068-468.

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Quick Answer

What is a Section 66 special audit in Ambattur SIDCO, Chennai?

Section 66 allows an Assistant Commissioner (not below this rank) with prior approval of the Commissioner to direct a Chartered Accountant or Cost Accountant — nominated by the Commissioner — to audit a registered person where the officer is of the opinion that the value declared is not correct or the credit availed is not within the normal limits. The order is issued in ADT-03 and the auditor's report is submitted within 90 days, extendable by another 90 days.

Transparent Pricing

GST Audit Support in Ambattur SIDCO — Plans & Pricing

Fixed fees · Zero hidden charges · Call 9566-068-468 for a custom quote.

MonthlyAnnualSave 2 Months
Nill
Basic ADT-01 documentation
₹5,000/per engagement

  • ADT-01 Notice Review
  • Audit Document Checklist
  • Records Compilation Support (12 months)
  • GSTR-1 vs GSTR-3B Reconciliation
  • On-site Audit Representation
  • ADT-02 Reply Drafting
  • Audit Period Coverage: 1 financial year
  • Reconciliation Depth: Summary level
  • WhatsApp Document Support
  • GST Advisory Calls
  • Section 66 Special Audit Handling
  • Section 107 Appeal Filing
Starter
On-site audit support 1 day
₹15,000/per engagement

  • ADT-01 Notice Review
  • Audit Document Checklist
  • Records Compilation Support (12 months)
  • GSTR-1 vs GSTR-3B Reconciliation
  • On-site Audit Representation (1 day)
  • ADT-02 Reply Drafting
  • Audit Period Coverage: 1 financial year
  • Reconciliation Depth: Line-item
  • WhatsApp Document Support
  • GST Advisory Calls (1 session)
  • Section 66 Special Audit Handling
  • Section 107 Appeal Filing
Most Popular ⭐
Professional
Full audit representation + ADT-02 reply
₹35,000/per engagement

  • ADT-01 Notice Review
  • Audit Document Checklist
  • Records Compilation Support (up to 5 years)
  • GSTR-1 vs GSTR-3B vs Books Reconciliation
  • On-site Audit Representation (full audit)
  • ADT-02 Findings Reply
  • Table 8 GSTR-9 ITC Reconciliation
  • Section 17(5) Workings
  • RCM Register Reconstruction
  • DRC-03 Closure Filing
  • Audit Period Coverage: Up to 5 financial years
  • Reconciliation Depth: Line-item with documentary backup
  • WhatsApp Document Support
  • GST Advisory Calls (Unlimited)
  • Section 66 Special Audit Handling
  • Section 107 Appeal Filing
Premium
Section 66 special audit + Section 107 appeal
₹85,000/per engagement

  • ADT-01 Notice Review
  • Audit Document Checklist
  • Records Compilation Support (up to 6 years)
  • GSTR-1 vs GSTR-3B vs Books Reconciliation
  • On-site Audit Representation (full audit)
  • ADT-02 Findings Reply
  • Table 8 GSTR-9 ITC Reconciliation
  • Section 17(5) Workings
  • RCM Register Reconstruction
  • DRC-03 Closure Filing
  • Section 66 Special Audit Coordination with Nominated CA
  • DRC-01 SCN Reply (Section 73/74)
  • Section 107 First Appeal Filing with 10% Pre-deposit
  • Personal Hearing Representation
  • Audit Period Coverage: Up to 6 financial years
  • Reconciliation Depth: Litigation-grade with case-law backing
  • WhatsApp Document Support
  • GST Advisory Calls (Unlimited)
  • Dedicated Audit Manager
  • Priority 24-Hour Support

Swipe to see all plans

Prices exclude GST. For enterprise pricing, call 9566-068-468.

Why FilingPro?

Why Ambattur SIDCO Clients Choose FilingPro

Expert GST Audit Support in Ambattur SIDCO — qualified professionals, 15+ years experience, zero-penalty track record.

15+ Years Chennai Audit Experience

Our practice has handled departmental audits since the service tax and VAT era — deep institutional memory of jurisdictional CGST and SGST audit teams in Chennai, their typical findings and effective reply structures.

ADT-01 Notice Handled End-to-End

Every ADT-01 notice received by a Ambattur SIDCO client is acknowledged within 24 hours and full records compilation begins under Rule 101(2). No last-minute scramble at audit start.

On-Site Audit Representation

For audits conducted at the registered principal place of business, FilingPro consultants are present throughout — answering queries, producing records and protecting against adverse interpretations on the spot.

Table 8 GSTR-9 Reconciliation

Table 8 of GSTR-9 — the reconciliation between GSTR-2A/2B and ITC availed in GSTR-3B — prepared in advance with documentary backup. Variances explained before audit team raises queries.

Section 17(5) Workings Pre-Disclosed

Motor vehicles for personal use, food and beverages, club memberships, works contract for immovable property and goods/services for personal use — all Section 17(5) blocked credits flagged and reversed in returns proactively.

RCM Register Reconstruction

Reverse charge on advocate fees, GTA, security services and director payments — register reconstructed for the audit period with cash payment evidence and ITC claim entries.

Key Benefits

What Ambattur SIDCO Clients Get

Every GST Audit Support engagement delivers measurable, guaranteed outcomes — expert professionals, on time, every time.

GSTR-9C Self-Certification Without Surprises
For Ambattur SIDCO businesses above ₹5 crore turnover, GSTR-9C reconciliation between audited financials and GSTR-9 prepared and self-certified well before 31 December — no Table 8 mismatch, no HSN summary gap.
Confidential Audit Defence
Audit working papers, ADT-02 findings and reconciliation evidence stored under access-controlled channels. Ambattur SIDCO clients' audit data is never shared with third parties or used for cross-marketing.
Audit Closed Without Demand
Where findings are minor and accepted, voluntary payment via DRC-03 closes the audit at ADT-04 stage. Ambattur SIDCO clients avoid DRC-01 SCN, Section 73/74 adjudication and penalty escalation.
ITC Defended Against Supplier Default
ITC questioned solely because the supplier did not pay tax to the exchequer is defended with Section 16 compliance evidence and Madras HC precedent — credits retained without reversal.
Table 8 Mismatch Demand Avoided
Table 8 of GSTR-9 — historically the most-litigated audit finding — prepared with line-item backup so audit team has no basis to propose ITC reversal under Rule 36(4) or Section 16(2)(aa).
RCM Demand Pre-Empted
Reverse charge on advocate fees, GTA and director payments — paid in cash, ITC reclaimed in same period, fully documented. Ambattur SIDCO clients face no surprise RCM demand at audit stage.
Comparison

Section 65 (Departmental) vs Section 66 (Special)

Why this matters here — In Ambattur SIDCO, the cluster of heavy manufacturing, auto components, engineering businesses that defines Ambattur SIDCO's commercial fabric; served by short connections to Ambattur Industrial Estate and Ambattur and onward to central Chennai.

AspectSection 65 (Departmental)Section 66 (Special)
Triggering preconditionSelection on risk parameters; no satisfaction of mis-declaration is required to commenceOpinion that value declared is not correct or credit availed is not within normal limits, recorded with reasons
Initiating form and notice windowForm ADT-01 served at least fifteen working days before commencement per Rule 101(2)Form ADT-03 issued as a direction; no fifteen-day buffer is prescribed since the audit is by a nominated professional
Time limit to completeThree months from commencement, extendable by six months by the Commissioner for reasons recorded in writingNinety days for submission of report by the nominated professional, extendable by another ninety days on application
Stage at which the engagement beginsAny time during the record-retention window under Section 36, generally any complete financial yearAt any stage of scrutiny, enquiry, investigation or any other proceeding under the Act per Section 66(1)
Concluding instrumentForm ADT-02 records findings; demand if any follows separately through DRC-01 under Section 73 or Section 74Form ADT-04 records the nominated auditor's report; subsequent action proceeds under Section 73 or Section 74 as appropriate
Bar on a second audit of the same periodDepartmental audit does not preclude action under other provisions; fresh material is generally needed to revisitSpecial audit may be ordered even where Section 65 audit was earlier conducted on the same period
Who bears the audit costCost is borne by the department; no professional fee burden falls on the registered personExpenses including remuneration of the nominated professional are determined and paid by the Commissioner under Section 66(5)
Permissible defence themesReconciliation completeness, supplier-side bona fide credit per Suncraft Energy, jurisdictional discipline on procedural lapsesChallenge to recorded satisfaction of mis-declaration, opportunity of hearing under Section 66(3), Kranti Associates speaking-order standard
Onward escalation pathwayADT-02 findings, if disputed, mature into DRC-01 then DRC-07; first appeal lies under Section 107 with ten per cent pre-depositADT-04 report feeds into Section 73 or 74 proceedings; final order is appealable under Section 107 on the same pre-deposit basis
Operative provisionSub-section (1) of Section 65 of the CGST Act 2017 read with Rule 101 of the CGST RulesSub-section (1) of Section 66 of the CGST Act 2017 read with Rule 102 of the CGST Rules
Authority who orders the auditCommissioner or any officer empowered by general or specific authorisation drives the audit through internal departmental staffOfficer ranked Assistant Commissioner or above, on the Commissioner's prior approval, directs an externally nominated professional
Person who conducts the examinationDepartmental proper officer either visits the registered place or summons books to the officeAn external professional, drawn from the CA or CMA pool and nominated by the Commissioner, examines records for the department
Documents Required

Documents for GST Audit Support

Share documents via WhatsApp to 9566-068-468. No office visit required for Ambattur SIDCO clients.

12 months of GSTR-1 GSTR-3B and GSTR-9 returns for the audit period
Audited financial statements with Schedule III balance sheet and P&L
ITC ledger with Section 17(5) blocked-credit reversals and Table 8 GSTR-9 working
E-invoice IRN logs reconciled with GSTR-1 (for AATO above ₹5 crore)
E-way bill register for consignments above ₹50000 with vehicle and route details
RCM register — advocate fees GTA security director payments cash-paid and ITC-claimed
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Statutory Deadlines

Compliance deadlines that matter

Miss any of these and the next consequence kicks in automatically.

Deadlines in this neighbourhood — In Ambattur SIDCO, Ambattur SIDCO businesses in the heavy manufacturing arm find that GST inverted-duty refunds capital-goods ITC and Rule 42/43 apportionment dominate the compliance workload; the business activity radiating outward from SIDCO Industrial Estate and nearby commercial pockets.

Trigger eventDaysFormConsequence
Receipt of audit intimation in Form GST ADT-01 from the proper officer15 daysRecords preparation and place-of-business readinessAudit commences at the place of business or office of proper officer with or without taxpayer-side preparation; observations under Rule 101(4) may proceed on incomplete records
Date of commencement of audit under Explanation to Section 65(4)90 daysAudit completion by proper officerAudit must be completed within ninety days; extension up to six months by Commissioner-recorded order is the only safety valve
Conclusion of audit by the proper officer30 daysGST ADT-02 (findings communication)Proper officer must communicate findings, rights and obligations and reasons within thirty days; non-compliance vitiates the closure step
Service of ADT-01 by the proper officer15 daysRecords production at registered placeAudit commences on the date specified after the fifteen working day minimum notice; non-availability of records can trigger Section 122 proceedings for failure to maintain.
Direction for special audit by Commissioner90 daysADT-03 and audit reportNominated chartered accountant or cost accountant to submit the special audit report within ninety days extendable by another ninety days for sufficient cause shown by the auditor or the registered person.
Closure of audit period for annual record retention2190 daysStatutory registers under Rule 56Books of account and statutory registers to be retained for seventy-two months from the due date of furnishing the annual return for the period, beyond which voluntary destruction is permitted unless appeal or proceeding is pending.
Pre-SCN intimation in Form DRC-01A served by proper officer post-audit30 daysDRC-01A Part B reply or DRC-03 paymentAcceptance route closes after thirty days; matter proceeds to formal SCN under Section 73 or 74
ADT-02 closure with no demandOn due dateNo further form — file the ADT-02 in recordsClosure of departmental audit for the period covered; subsequent re-audit barred unless fresh material under Section 67 emerges

Deadline pressure points we see in Ambattur SIDCO: On the ground in Ambattur SIDCO, supporting the engineering and operator workforce that lives in the surrounding residential belts; for Ambattur SIDCO units balancing production cycles with monthly GST and quarterly TDS compliance.

Forms Library

Forms used in this engagement

Forms most asked about here — In Ambattur SIDCO, where tier-2 and tier-3 component suppliers serve OEMs under DGS&D-style rate contracts with monthly GSTR-1 invoice volumes; supporting the engineering and operator workforce that lives in the surrounding residential belts.

GSTR-1Statement of outward supplies

Monthly or quarterly statement of outward supplies — the primary source document for audit observations on tax payable, turnover declarations and B2B invoice flow

11th of the next month (monthly) or 13th of the month following the quarter (QRMP) Common Portal (taxpayer)
GSTR-3BSummary return

Monthly summary return capturing output tax, ITC availed and net tax payable — frequently the focus of audit observations on Table 4 ITC and Table 3 outward supply mismatches

20th / 22nd / 24th of the next month based on State and turnover slab Common Portal (taxpayer)
GST ADT-01Notice for conduct of audit

Statutory notice issued by the proper officer informing the registered person of the institution of audit under Section 65; carries the period of audit, place, date and the records to be made available

Not less than fifteen working days prior to conduct of audit Jurisdictional proper officer not below the rank prescribed
GST ADT-02Audit report under Section 65

Communication by the proper officer to the registered person of the findings of audit, rights and obligations and reasons for the findings; the formal closure document of departmental audit

Within thirty days of conclusion of audit Jurisdictional proper officer (officer-issued)
GST ADT-03Direction for special audit

Direction issued by the proper officer, with prior approval of the Commissioner, to the registered person to get his records examined and audited by a chartered accountant or cost accountant nominated by the Commissioner

Issued during scrutiny, inquiry, investigation or other proceedings at any stage Officer not below the rank of Assistant Commissioner with Commissioner approval
GST ADT-04Communication of findings of special audit

Communication by the proper officer to the registered person of the findings of the special audit conducted under Section 66; carries the nominee auditor's observations and the officer's view

After receipt of special audit report from nominee auditor Jurisdictional proper officer (officer-issued)
GSTR-9Annual return

Consolidated annual return capturing outward and inward supplies, ITC availed and reversed, taxes paid and demands/refunds; the primary statutory return on which audit observations are anchored

On or before 31 December of the year following the financial year Common Portal (taxpayer)
GSTR-9CReconciliation statement

Self-certified reconciliation between the value of supplies declared in the annual return and the audited annual financial statement, along with reconciliation of tax paid and ITC

Filed along with GSTR-9 by 31 December of the year following the financial year, where turnover exceeds five crore rupees Common Portal (self-certified by registered person)

GST Audit Support in Ambattur SIDCO, Chennai 600098

Ambattur SIDCO is a heavy industrial cluster within the broader Ambattur Industrial Estate with engineering auto components and plastics units operating under SIDCO. We keep a cycle-by-cycle record of how the Ambattur Division of the Chennai North handles Ambattur SIDCO filings and approvals. Because PIN 600098 sits inside the Chennai North jurisdiction, the handling office for Ambattur SIDCO stays consistent across years, which matters when filings or approvals span cycles. Every Ambattur SIDCO engagement we open begins with the basics: PIN 600098, the Ambattur Division, and the coordinates 13.1011, 80.1581 that anchor the locality.

Ambattur SIDCO reads as a heavy industrial cluster pocket with high commercial activity, anchored around SIDCO Industrial Estate and fed by the Ambattur SIDCO Bus Stop corridor. Freight and foot traffic from the Ambattur SIDCO Bus Stop hub pull steady daily commerce through Ambattur SIDCO, so there is rarely a quiet filing month in this heavy industrial cluster pocket. Vendors and customers tied to the Ambattur SIDCO Bus Stop network show up across the invoice trail we reconcile for Ambattur SIDCO GST Audit Support clients. Commercial activity in Ambattur SIDCO runs high, so GST Audit Support volumes scale through peak months and we staff the Ambattur SIDCO desk accordingly.

A heavy manufacturing operator in Ambattur SIDCO gets a GST Audit Support workflow shaped by sector norms, not a one-size-fits-all template. Sector concentration matters: when Ambattur SIDCO leans toward heavy manufacturing, the GST Audit Support risks cluster around the same few line items each cycle. The business mix in Ambattur SIDCO centres on heavy manufacturing, and that sector carries its own GST Audit Support quirks we plan for in advance. Mixed heavy manufacturing activity across Ambattur SIDCO means our GST Audit Support team keeps sector playbooks ready rather than improvising per client.

We keep a repeatable GST Audit Support checklist for Ambattur SIDCO so nothing in the cycle is improvised or missed. Our Ambattur SIDCO GST Audit Support process is built to be predictable, documented, and on time, cycle after cycle. Every GST Audit Support file we open for Ambattur SIDCO is reconciled, reviewed by a qualified practitioner, and archived for seven years. Fixed-fee scoping means a Ambattur SIDCO business knows the GST Audit Support cost up front, with no surprise additions mid-engagement.

GST Audit Support clients in Padi Industrial Estate are handled by the same practitioners who run our Ambattur SIDCO desk. A client relocating between Ambattur SIDCO and Padi Industrial Estate keeps the same GST Audit Support file and the same team. Businesses straddling Ambattur SIDCO and Padi Industrial Estate get a single GST Audit Support point of contact rather than two. Proximity to Padi Industrial Estate means a Ambattur SIDCO engagement can extend across the locality cluster with no change in cadence.

Each engagement in Ambattur SIDCO adds to a record of what the Chennai North jurisdiction expects, sharpening the next GST Audit Support file. The longer we serve Ambattur SIDCO, the more precisely we predict where a GST Audit Support file needs attention. Sector signals in Ambattur SIDCO — seasonal plastics swings and peak-period volumes — shape how we schedule GST Audit Support work. The GST Audit Support mistakes we see most in Ambattur SIDCO are avoidable with disciplined intake, which our checklist enforces.

Relocating a registered office into Ambattur SIDCO (PIN 600098) changes the assessing division, and we handle that GST Audit Support transition cleanly. Shifting principal place of business to Ambattur SIDCO means updating jurisdiction to the Chennai North, and we manage the paperwork end-to-end. A startup setting up near MTH Road in Ambattur SIDCO gets a GST Audit Support foundation built for the Ambattur Division from day one. First-time GST Audit Support for a Ambattur SIDCO business is where getting the basics right saves years of cleanup later.

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Expert Guide

GST Audit Support in Ambattur SIDCO — Complete Guide

GST Audit Support in Ambattur SIDCO (600098) is handled end-to-end by qualified professionals at FilingPro — from receipt of ADT-01 notice through on-site audit representation, ADT-02 findings reply and DRC-03 closure. Each engagement reconciles GSTR-1 vs GSTR-3B vs books, ties Table 8 of GSTR-9 to GSTR-2B, and reconstructs the RCM register before the audit team arrives at your principal place of business.

GST Audit Support in Ambattur SIDCO, Chennai

Section 65 departmental audit and Section 66 special audit representation for Ambattur SIDCO businesses — ADT-01 notice handling, on-site audit support, ADT-02 reply drafting and DRC-03 closure under Rule 101 of the CGST Rules.

GST Audit Consultant in Ambattur SIDCO — Section 65 and Section 66 Expert

A dedicated GST audit consultant in Ambattur SIDCO prepares Table 8 GSTR-9 reconciliation, Section 17(5) workings, RCM register reconstruction and litigation-grade documentary backup for the full 6-year Section 36 retention window.

ADT-01 Notice Reply and ADT-02 Findings Defence in Ambattur SIDCO

On receipt of ADT-01, all 12 months of returns plus audited financials, ITC ledger and e-invoice IRN logs are compiled within the 15 working days notice window — and ADT-02 findings are replied with Section 16 case-law backing including Tvl. Diya Agencies.

GSTR-9C Self-Certification Expert in Ambattur SIDCO — Above ₹5 Crore Turnover

For Ambattur SIDCO businesses with aggregate turnover above ₹5 crore, GSTR-9C reconciliation between audited financials and GSTR-9 is self-certified and filed before 31st December along with full Table 8 ITC tie-up.

Get Expert Help Today
Qualified professionals handle your GST Audit Support in Ambattur SIDCO. WhatsApp documents — we begin within 24 hours. From ₹5,000/one-time. Free consultation.
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Key Facts — GST Audit Support in Ambattur SIDCO
Section 65 departmental audit handled end-to-end for Ambattur SIDCO clients — ADT-01 to ADT-04 closure with zero adverse demand.
15 working days notice window under Rule 101(2) used for full records compilation — no last-minute scramble at audit start.
GSTR-1 vs GSTR-3B vs books reconciliation prepared in advance — variances explained before the audit team raises queries.
Table 8 GSTR-9 ITC reconciliation tied line-item to GSTR-2B and audited books — no Table 8 mismatch demand.
Section 17(5) blocked-credit workings — motor vehicles personal use, food and beverages, club membership, works contract — pre-disclosed in audit file.
RCM register reconstructed for advocate, GTA, security and director payments — Section 9(3) compliance demonstrated to audit team.
E-invoice IRN logs reconciled with GSTR-1 for Ambattur SIDCO businesses above ₹5 crore AATO — Notification 10/2023 compliance evidenced.
ADT-02 findings replied with Tvl. Diya Agencies and Tvl. Raja Stores case-law where supplier-default ITC reversal is proposed.
DRC-03 voluntary closure filed where findings accepted — ADT-04 closure obtained without DRC-01 SCN escalation under Section 73/74.
Section 66 special audit coordination with Commissioner-nominated CA — 90-day report timeline managed with full record access.
People Also Ask — GST Audit Support in Ambattur SIDCO
What is the difference between Section 65 and Section 66 GST audit?
Section 65 is a departmental audit conducted by the Commissioner or an authorised officer at the place of business, with ADT-01 notice 15 working days in advance and 3-month completion (extendable to 6 months). Section 66 is a special audit ordered by an Assistant Commissioner (with Commissioner's approval) and conducted by an external Chartered Accountant or Cost Accountant nominated by the Commissioner, with 90-day report timeline (extendable by 90 days). Section 66 audit cost is borne by the Commissioner under Section 66(5).
How long must GST records be kept for audit?
Section 36 of the CGST Act read with Rule 56 requires retention for 6 years from the due date of the annual return for the relevant financial year. Where the registered person is party to any appeal, revision or proceeding, retention extends to one year after final disposal or 6 years — whichever is later. Cancellation of registration does not extinguish this obligation.
What happens if I do not respond to ADT-01 audit notice?
Non-response leads to ex-parte audit on the basis of available returns and information. Findings communicated via ADT-02 will be unfavourable since the taxpayer's books and reconciliations are absent. The proper officer can then issue DRC-01 under Section 73 or 74 followed by adjudication order under Section 73(9) or 74(9) creating tax demand with interest and penalty.
Can I voluntarily pay tax based on audit findings?
Yes. Where ADT-02 findings are accepted, the short-paid tax along with interest under Section 50 (and applicable penalty) can be voluntarily paid through Form DRC-03 on the GST portal. The proper officer then issues ADT-04 closure order. Voluntary payment under DRC-03 also helps avoid the DRC-01 SCN route under Section 73 or 74.
Is GSTR-9C audit by a CA still mandatory?
No. From FY 2020-21 onwards (Finance Act 2021 amendments) GSTR-9C is self-certified by the registered person, not certified by an external CA. The reconciliation between audited financials and GSTR-9 is prepared and filed by the taxpayer alongside GSTR-9 by 31st December, where aggregate turnover exceeds ₹5 crore in the financial year.
Can the same period be audited twice under GST?
Generally no. Once Section 65 audit is completed and ADT-04 closure order is issued, the same period cannot be re-audited under Section 65. Section 66 special audit is a separate power and may be ordered if the Assistant Commissioner forms an opinion on incorrect valuation or excess credit. Re-opening a closed audit requires fresh material and is exceptional.
What is the statutory record-retention horizon under GST?

Section 36 fixes the horizon at six years measured from the GSTR-9 due date for that year. Where any appeal, revision or proceeding remains pending, retention runs until one year after final disposal or six years, whichever event is later in time.

Can a second GST audit be conducted for the same period?

A second Section 65 audit of the same period is generally not undertaken absent fresh material. However, special audit under Section 66 may be ordered even where Section 65 audit was earlier conducted, and other proceedings under the Act remain available where conditions are met.

Does the audit have to take place at the taxpayer's premises?

Sub-section (1) of Section 65 allows the officer to elect between an on-premises audit and an office-of-the-officer audit. For most {{area_name}} taxpayers the on-site route is preferred so that books, statutory registers and electronic backups can be inspected together.

Is the audit unit the PAN or the individual registration number?

The audit unit is each GSTIN; assessment and book-keeping are GSTIN-specific even where the underlying PAN is common. The Tamil Nadu registration of a pan-India taxpayer is audited independently by the jurisdictional CGST or SGST authority covering that GSTIN.

What is the difference between ADT-02 and DRC-01?

ADT-02 is the audit-findings report under Rule 101(5) at the end of a Section 65 audit. DRC-01 is the show-cause notice issued under Section 73 or 74 read with Rule 142 to demand tax. ADT-02 findings, if disputed, mature into a DRC-01 SCN separately.

What is DRC-03 and when is it used after audit?

DRC-03 is the voluntary-payment intimation under Rule 142(2). It is used to discharge tax with interest before SCN to invoke Section 73(5) or 74(5) immunity, or to comply with ADT-02 findings. Closure follows through DRC-04 or DRC-05 as the case may be.

What Ambattur SIDCO clients want to know before signing: On the ground in Ambattur SIDCO, around the SIDCO Industrial Estate catchment of Ambattur SIDCO; where tier-2 and tier-3 component suppliers serve OEMs under DGS&D-style rate contracts with monthly GSTR-1 invoice volumes.

Expert Guide

A complete walkthrough — Gst Audit Support

Localised for Ambattur SIDCO, Chennai — where tier-2 and tier-3 component suppliers serve OEMs under DGS&D-style rate contracts with monthly GSTR-1 invoice volumes.

Reading this guide locally — In Ambattur SIDCO, around the SIDCO Industrial Estate catchment of Ambattur SIDCO; Ambattur SIDCO businesses in the auto components arm find that tier-2 component suppliers face GST classification disputes between HSN 8708 and 8483 and frequent ITC reversal notices.

What is a GST audit and where does it sit in the compliance architecture

Self-certification under GSTR-9C and its audit interplay

Until Finance Act 2021 amendments, Section 35(5) had required certification of GSTR-9C by a Chartered Accountant or Cost Accountant for registered persons whose aggregate turnover exceeded the prescribed threshold. The Finance Act 2021 substituted Section 35(5) and amended Section 44, shifting GSTR-9C to a self-certified reconciliation statement filed by the registered person without third-party attestation, effective FY 2020-21 onwards (Notification 29/2021-CT). The reconciliation in GSTR-9C between audited financial statements and GSTR-9 annual return is now an internal-control disclosure; it does not substitute for departmental audit under Section 65. Audit teams treat GSTR-9C self-certified reconciliations as primary working papers — Table 5 (turnover reconciliation), Table 9 (tax payable reconciliation) and Table 12-14 (ITC reconciliation) become the starting points of Section 65 audit interrogation.

Comparative framework — VAT/CST audits versus GST audit

Pre-GST, the VAT regime in Tamil Nadu (Tamil Nadu VAT Act 2006) had an audit framework under Section 64 with mandatory CA audit certificates for dealers above prescribed turnover, and the Central Sales Tax framework had limited audit coverage focused on inter-State transactions. The GST framework consolidates and rationalises this — a single audit under Section 65 covers central, State and integrated tax dimensions; the cooperative-federal architecture under Article 246A and 279A means the audit can be conducted by either the central or State authority but not both (Section 6 cross-empowerment). The OECD International VAT/GST Guidelines emphasise audit-efficiency through risk-based selection and digital data analytics, both of which the Indian framework has incorporated through GSTN-driven analytics and the GSTR-9C self-certification feed.

Statutory framework under Chapter XIII of the CGST Act

The audit framework under the Central Goods and Services Tax Act 2017 is contained in Chapter XIII, comprising Sections 65, 66 and 71. Section 65 provides for departmental audit, Section 66 for special audit by a Chartered Accountant or Cost Accountant nominated by the Commissioner, and Section 71 for access to business premises by an authorised officer. The Empowered Committee 2009 First Discussion Paper had envisaged audit as the principal verification layer in a self-assessment regime, replacing the pre-GST pattern of routine assessment under the VAT/CST framework. The architecture is risk-based: not every registered person is audited; selection is driven by Section 65(2) read with internal CBIC risk-management directions which factor in turnover scale, sectoral risk profile, prior compliance history and reconciliation gaps surfaced in GSTR-9C self-certification. The audit-process closure under Section 65(7) feeds either into a no-objection certificate, a voluntary DRC-03 payment, or an SCN under Section 73 or Section 74 depending on whether tax has been short-paid, short-collected or wrongly availed as ITC.

Representation rights under Section 75

Multiple adjournments and Section 75(5)

Section 75(5) provides that the proper officer shall, if sufficient cause is shown by the person chargeable with tax, grant time to that person and adjourn the hearing for reasons to be recorded in writing; provided that no such adjournment shall be granted for more than three times to a person during the proceedings. The three-adjournment cap is a calibration between procedural fairness and proceeding-efficiency. In practice, registered persons facing complex audit findings should plan their adjournment requests strategically — use the first adjournment to gather documents, the second for representation-counsel engagement, and reserve the third for final consolidation. Beyond three adjournments, the proper officer is empowered to proceed ex-parte under Section 75(5) and pass the order on best-judgement basis.

Reasoned order requirement under Section 75(6)

Section 75(6) provides that the proper officer, in his order, shall set out the relevant facts and the basis of his decision. The reasoned-order requirement is a substantive procedural right that traces to the Kranti Associates v Masood Ahmed Khan (2010) Supreme Court principle on natural-justice-derived reasoned orders. Pradeep Goyal v UoI (Supreme Court on DIN — document identification number for all CBIC communications) supplements this by requiring procedural identifiability of the order. The registered person facing an order that does not engage with the response, does not cite the relevant provisions, or merely reproduces the SCN allegations, has strong grounds for either Section 107 first-appeal challenge or Article 226 writ challenge.

Bound-by-appellate-decisions principle under Section 75(11)

Section 75(11) provides that an issue on which the appellate authority or Appellate Tribunal or High Court has given its decision which is prejudicial to the interest of revenue in some other proceedings, and an appeal to the appellate authority or Appellate Tribunal or High Court or Supreme Court against such decision is pending, the period of stay shall be excluded in computing the limitation period. The provision permits the revenue to preserve its position pending appeal; the corresponding taxpayer protection is the principle that the proper officer is bound by appellate decisions on the same issue unless distinguished. Where the registered person can cite a binding precedent on the same issue from the Madras High Court or AAR Tamil Nadu, the proper officer is obliged to apply it.

Post-audit options

Voluntary DRC-03 closure

The simplest post-audit option, where the registered person broadly accepts the ADT-02 findings, is voluntary closure through DRC-03 payment under Section 73(5). DRC-03 is filed online through the GST portal; the registered person specifies the tax, interest and (where applicable) penalty quantum and the period to which the payment relates. Section 73(6) bars subsequent SCN on the amount paid. The Form DRC-04 acknowledgement is the conclusive evidence of voluntary closure. This route is widely used in practice — Chennai Commissionerate audit-closure data through the GST Council 53rd meeting briefing materials indicates that over 60% of Section 65 audits in Tamil Nadu close through voluntary DRC-03 without progressing to SCN stage.

SCN response and contested adjudication

Where one or more ADT-02 findings are disputed, the registered person prepares for the SCN under Section 73 or Section 74. The SCN response should be filed within thirty days of receipt of DRC-01; extensions are available under Section 73(8) or 74(8). The response should address each allegation with: (i) the factual position; (ii) the legal position with cited provisions and circulars; (iii) cited case law (Goetze, Bharti Airtel, Suncraft Energy, Aap and Co, GKN Driveshafts, Kranti Associates, Pradeep Goyal, Tapas Dutta — only where load-bearing); (iv) the quantum-mitigation argument (Section 73 versus Section 74 framing, limitation, computational errors). The personal-hearing under Section 75(4) is the consolidation step. The DRC-07 order then issues; first appeal under Section 107 follows for adverse outcomes.

Writ remedy before the Madras High Court

Where the ADT-02 findings, the SCN under Section 73/74, or the DRC-07 adjudication order suffers from jurisdictional infirmity — absence of Commissioner approval for Section 66 special audit, breach of Section 65(4) audit-completion timeline, denial of Section 75(4) opportunity of hearing, absence of Section 75(6) reasoned order, absence of DIN under Pradeep Goyal, breach of natural justice under audi alteram partem — the registered person can file a writ petition under Article 226 of the Constitution before the Madras High Court. The Aap and Co v UoI (Gujarat HC) and Asahi India Glass v UoI (P&H HC) line of authority offers guidance on writ entertainability in tax matters. The writ remedy is extraordinary and reserved for jurisdictional questions, not for merit-based challenges which belong in the statutory appellate hierarchy.

Section 65 departmental audit framework

Powers of the audit team under Section 65(5) and Section 65(6)

Section 65(5) empowers the audit team to verify the documents, ascertain the correctness of turnover declared, exemptions and deductions claimed, rate of tax applied, ITC availed and utilised, refund claimed, and other relevant compliance matters. The team can examine any of these dimensions and require any explanation. Section 65(6) imposes a corresponding obligation on the registered person to afford the necessary facility to verify the books of account, statements and other documents called for, and to furnish information and render assistance for the timely completion of the audit. Reasonable cooperation is the registered person's first-line defence — obstruction or non-cooperation can trigger Section 71 access provisions and escalate the matter into Section 67 inspection territory.

Initiation under Section 65(1) and ADT-01 intimation

Section 65(1) of the CGST Act empowers the Commissioner, or any officer authorised by general or specific order, to undertake audit of any registered person for such period, at such frequency and in such manner as may be prescribed. Rule 101(2) of the CGST Rules read with Section 65(3) requires that the registered person be given not less than fifteen working days prior notice of audit through Form GST ADT-01. The ADT-01 intimation specifies the period proposed to be audited (typically one financial year, occasionally a longer span) and the documents to be made available — books of account, invoices, declarations, returns, GSTR-9C reconciliation statement, internal-audit reports if any. The fifteen-day window is the registered person's opportunity to gather records and seek extension on documented grounds; Rule 101(3) implicitly contemplates such extensions where genuinely warranted.

Audit period and frequency under Section 65(2)

Section 65(2) provides that the audit shall be conducted at the place of business of the registered person or in the office of the proper officer. The period covered is generally one financial year; multi-year audits are permissible where risk parameters warrant. Rule 101(1) limits the audit to a financial year unless the Commissioner specifically directs otherwise. The frequency of audit selection is risk-driven — the CBIC's Audit Manual (2019, periodically updated) directs Commissionerates to combine GSTN risk-engine outputs with sectoral profiles and prior-audit findings. Persons whose aggregate turnover crosses prescribed risk thresholds, or who have triggered specific red flags (large refund claims, sharp ITC growth versus output growth, GSTR-2A versus GSTR-3B mismatches), are prioritised. The GST Council 47th Chandigarh meeting (June 2022) had recommended a more nuanced risk-based selection to reduce small-taxpayer compliance burden.

What Ambattur SIDCO clients usually ask next: On the ground in Ambattur SIDCO, supporting the engineering and operator workforce that lives in the surrounding residential belts; where tier-2 and tier-3 component suppliers serve OEMs under DGS&D-style rate contracts with monthly GSTR-1 invoice volumes; for Ambattur SIDCO units balancing production cycles with monthly GST and quarterly TDS compliance.

Glossary

Plain-English glossary for this service

Terms you will hear in this area — In Ambattur SIDCO, where tier-2 and tier-3 component suppliers serve OEMs under DGS&D-style rate contracts with monthly GSTR-1 invoice volumes.

Section 73(5) deposit

Section 73(5) deposit is the voluntary payment made by the registered person, on his own ascertainment or on ascertainment by the proper officer, before issuance of a show-cause notice. The deposit, when made along with applicable interest under Section 50, results in no penalty being leviable under Section 73(9).

Audit jurisdiction

Audit jurisdiction refers to the statutory authority of the Commissioner under sub-section (1) of Section 65 to authorise any officer to undertake audit of a registered person. Authorisation may be by general or specific order. A challenge to audit jurisdiction is typically agitated at the threshold under Article 226 before the High Court.

Section 67 search

Section 67 search is the enforcement-track action distinct from departmental audit. The proper officer not below the rank of Joint Commissioner, with reasons to believe that tax has been suppressed or credit wrongly availed with intent to evade tax, may authorise in writing any officer to inspect places of business and seize goods or documents.

Best-judgment assessment

Best-judgment assessment is the framework under Section 62 or Section 63 by which the proper officer, where a registered person fails to furnish returns or where an unregistered person is liable, assesses the tax liability to the best of his judgment. Audit non-cooperation can be a trigger for invoking Section 62.

Aggregate of demands

Aggregate of demands captures the total tax, interest and penalty proposed in DRC-01 or confirmed in DRC-07 arising from audit observations. The aggregate determines the appellate forum, the pre-deposit obligation under Section 107(6) and the merits of pursuing rectification under Section 161.

Pre-deposit

Pre-deposit under sub-section (6) of Section 107 is the mandatory deposit of ten percent of the remaining amount of tax in dispute, subject to a maximum of twenty crore rupees, required for the appeal to be maintainable before the Appellate Authority. The pre-deposit is in addition to admitted tax, interest, fine and penalty.

First appeal

First appeal under sub-section (1) of Section 107 lies before the Appellate Authority against any decision or order passed under the CGST Act by an adjudicating authority. The appeal must be filed within three months from the date of communication of the order, condonable by a further one month on sufficient cause.

Rectification

Rectification under Section 161 of the CGST Act is the remedy for any error apparent on the face of record in any decision, order, notice, certificate or any other document. Rectification may be undertaken suo motu by the authority or on application by the registered person within three months of the document.

ITC reversal

ITC reversal is the substantive consequence of an audit observation that input tax credit has been wrongly availed or utilised. Reversal is effected through Table 4(B) of GSTR-3B with interest under Section 50(3) and, in some cases, penalty under Section 73(9) or 74(9) depending on the nature of the lapse.

Interest under Section 50

Interest under Section 50 is the statutory consequence of delayed payment of tax or wrong availment and utilisation of input tax credit. Sub-section (1) prescribes interest at the rate of eighteen percent per annum on delayed payment, and sub-section (3) prescribes interest at the rate of twenty-four percent for wrongful utilisation of ITC.

Personal hearing

Personal hearing under sub-section (4) of Section 75 is the opportunity granted by the proper officer or appellate authority to the registered person to present his case orally. Three adjournments at the option of the person sought to be heard are permitted on sufficient cause. Denial of personal hearing is a procedural infirmity.

Cross-examination

Cross-examination is the right of the registered person, as part of the opportunity of being heard, to examine the witnesses or officers whose statements are relied on against him in adjudication. The right is sought through a written application during personal hearing. Denial is a recognised ground in first appeal under Section 107.

Cost of Non-Compliance

Real-world penalty exposure

Numerical examples showing tax + interest + penalty across common default scenarios.

Penalty exposure typical of this micro-market — In Ambattur SIDCO, Ambattur SIDCO businesses in the heavy manufacturing arm find that GST inverted-duty refunds capital-goods ITC and Rule 42/43 apportionment dominate the compliance workload; supporting the engineering and operator workforce that lives in the surrounding residential belts.

ScenarioBase taxInterestPenaltyTotal
Cross-charge under Section 25(4) of ₹28,00,000 for inter-state support functions missed; audit-detected₹5,04,000 (revenue-neutral after recipient ITC)₹1,36,080 (18% over 18 months)Nil (revenue-neutrality)₹1,36,080
Section 9(4) reverse charge on unregistered purchases not discharged in three pre-Notification 7/2019 periods₹1,40,000₹37,800 (18% over 18 months)₹14,000 (10% under Section 73(9))₹1,91,800
E-invoicing under Notification 10/2023 missed for six months by a ₹6 crore turnover supplier; audit-flaggedNil (invoice substance compliant)Nil₹25,000 (Section 122(3) per invoice subject to cap)₹25,000
Schedule I supply on gifts to employees over ₹50,000 per year not disclosed; audit-detected for two years₹72,000 (on ₹4,00,000 supply)₹19,440 (18% over 18 months)₹7,200 (10% under Section 73(9))₹98,640
Section 17(5)(c) and (d) blocked credit ₹42,00,000 on residential project not reversed under Notification 3/2019 scheme₹42,00,000 (reversal)₹15,12,000 (18% over 24 months)₹4,20,000 (10% under Section 73(9))₹61,32,000
Annual reconciliation under Rule 42(2) skipped; cumulative common-credit reversal of ₹13,00,000 short for hospital₹13,00,000 (reversal)₹2,80,800 (18% over 14 months)₹1,30,000 (10% under Section 73(9))₹17,10,800

How Ambattur SIDCO businesses typically avoid these: On the ground in Ambattur SIDCO, the cluster of heavy manufacturing, auto components, engineering businesses that defines Ambattur SIDCO's commercial fabric; for Ambattur SIDCO units balancing production cycles with monthly GST and quarterly TDS compliance.

By Industry

Industry-specific patterns in Ambattur SIDCO

How the local trade mix shapes this — In Ambattur SIDCO, where tier-2 and tier-3 component suppliers serve OEMs under DGS&D-style rate contracts with monthly GSTR-1 invoice volumes; the cluster of heavy manufacturing, auto components, engineering businesses that defines Ambattur SIDCO's commercial fabric.

Auto Components
Common issue: Tier-2 auto-component suppliers to OEMs face Section 65 audit queries on job-work reconciliation under Section 143 read with Rule 45 ITC-04 disclosure. Goods sent for job-work beyond the one-year (inputs) and three-year (capital goods) windows are deemed supplied; many auto-component units lose track of the ITC-04 quarterly cycle and face deemed-supply additions.
How we handle it: Reconstruct ITC-04 records quarter-wise from delivery challans, principal-job worker GST invoices and movement registers. Where the window has lapsed, voluntarily compute deemed supply value under Rule 28 and pay through DRC-03 with interest under Section 50; this voluntary disclosure is treated as a mitigating factor under Section 73(5).
Engineering
Common issue: Engineering job-work units under Section 65 audit face Section 143 read with Rule 45 ITC-04 quarterly compliance scrutiny. Goods sent by the principal manufacturer to the job worker beyond one year (inputs) or three years (capital goods) are deemed supplied on the original date; engineering units often delay ITC-04 disclosure and face cascading interest under Section 50.
How we handle it: File ITC-04 quarterly within the prescribed timeline (25 days from quarter end for aggregate turnover above ₹5 crore; half-yearly otherwise per Notification 35/2021-CT). Reconcile delivery-challan registers with job-worker GSTR-2A entries; for window-lapsed goods, compute deemed-supply value under Rule 28 and pay through DRC-03 voluntarily.
Plastics
Common issue: Plastic manufacturers under audit face HSN classification disputes between Chapter 39 primary forms (typically 18%) and Chapter 39 secondary moulded products (varying rates). Wrong HSN at REG-01 cascades into wrong-rate audit findings; the audit team frequently invokes Section 74 (fraud) framing rather than Section 73 where classification was clearly deliberate.
How we handle it: Obtain a contemporaneous classification opinion from a tax practitioner or seek an Advance Ruling under Section 97 for borderline HSN cases. Where classification was bona-fide but incorrect, voluntarily pay differential under DRC-03 to mitigate the Section 74 fraud framing; this typically converts the case to Section 73 with reduced penalty exposure.
Manufacturing
Common issue: Manufacturers undertaking SEZ supplies under LUT face Section 65 audit scrutiny on Rule 96A timeline compliance for export realisation. Where SEZ payment realisation crosses fifteen months, the IGST recovery proposal under Rule 96A(1) provisos can be sizable, and the audit team often invokes interest under Section 50(1) from the original supply date.
How we handle it: Maintain a SEZ-LoA wise realisation tracker tied to RBI FIRC and SOFTEX certificates. For consignments exceeding fifteen months, file a representation citing the relaxations notified under various Notifications during FY 2020-21 (78/2020-CT etc.) and the GST Council 47th Chandigarh recommendations on realisation timelines.
Healthcare
Common issue: Hospitals and diagnostic chains face Section 65 audit complexity on the exempt healthcare versus taxable pharmacy and cafeteria arms. Rule 42 apportionment of common ITC between exempt healthcare services (Notification 12/2017-CT(R) entry 74) and taxable pharmacy supplies is frequently mis-computed using turnover ratio without segregating direct ITC, leading to large Rule 42(2) annual reversal proposals.
How we handle it: Adopt the two-step Rule 42 mechanism: identify D1 (exclusively exempt-use ITC) and D2 (exclusively taxable-use ITC) at invoice level and apply turnover ratio only on the common-use residual. Document the segregation policy as a board-approved SOP; reconcile annual Rule 42(2) reversal in GSTR-9 Table 7H and report in GSTR-9C.
Case Studies

Anonymised engagements we have handled

Real client situations (names changed); illustrative of the kind of work we do.

A flavour of cases we handle nearby — In Ambattur SIDCO, where SIDCO-CMDA developed engineering units operate on B2B procurement and capital-goods ITC accumulation cycles; Ambattur SIDCO businesses in the auto components arm find that tier-2 component suppliers face GST classification disputes between HSN 8708 and 8483 and frequent ITC reversal notices.

Bharti Airtel writEngineering services

Bharti Airtel rectification doctrine used to correct GSTR-3B at audit for a {{area_name}} engineering firm

Issue: An engineering firm in {{area_name}} discovered at the ADT-01 stage that an IGST and CGST swap of approximately three lakh forty thousand rupees in a single GSTR-3B period had not been correctable on the portal because the succeeding-period rectification route under Section 39(9) had lapsed.
Approach: We filed an Article 226 writ before the Madras High Court relying on the Supreme Court ratio in Union of India v Bharti Airtel for the principle that procedural limitations of the portal cannot defeat substantive correction. The petition prayed for a direction to permit DRC-03 correction with cross-credit adjustment.
Outcome: The Madras HC directed the proper officer to consider the DRC-03 representation; rectification was permitted within ninety days; the ADT-02 finding was withdrawn on this leg; cash flow remained neutral.
E-invoice IRNAuto components

E-invoice IRN reconciliation defended at audit for a {{area_name}} auto-components supplier

Issue: An auto-components Tier-2 supplier in {{area_name}} received an ADT-01 audit alleging a turnover suppression of approximately eighteen lakh rupees built on a comparison of IRNs generated on the Invoice Registration Portal against GSTR-1 outward supplies for a twelve-month window.
Approach: We reconstructed the IRN log against e-invoice cancellations within the twenty-four-hour window, mapped credit-note IRNs to negative outward supplies in GSTR-1, and reconciled the residual through the auto-population delta between IRP and GSTN. Notification 10/2023-Central Tax on the five-crore IRN threshold was placed on record for the relevant period.
Outcome: ADT-02 accepted the reconciliation; the eighteen lakh rupee suppression theory was dropped; a residual tax payment of approximately twenty-six thousand rupees on cancellation-window slippage was settled through DRC-03.
TRAN-1 transition creditEngineering services

Section 65 audit on transition credit defended for a {{area_name}} engineering firm

Issue: An engineering firm in {{area_name}} faced an ADT-01 audit on transition credit of approximately eight lakh rupees carried forward through TRAN-1 from the pre-GST regime, with the audit team contending that the credit was outside the Section 140 window for service tax accumulated credits.
Approach: We placed the Supreme Court ruling in Union of India v Filco Trade Centre Pvt Ltd on record for the principle that TRAN-1 windows are to be permitted in cases of genuine carry-forward, traced the underlying service-tax return ST-3 acknowledgements, and demonstrated compliance with the proviso conditions.
Outcome: ADT-02 accepted the transition credit; the eight lakh rupee reversal proposal was dropped; the credit was permanently reconciled to the electronic credit ledger.
HSN reportingChemicals manufacturing

Notification 78/2020 HSN reporting compliance defended at audit for a {{area_name}} chemicals manufacturer

Issue: A chemicals manufacturer in {{area_name}} faced an ADT-01 audit on alleged non-compliance with the HSN-code reporting requirement under Notification 78/2020-Central Tax, with a proposed penalty under Section 125 of approximately two lakh fifty thousand rupees across multiple invoices.
Approach: We demonstrated that aggregate turnover for the preceding financial year was above the five-crore threshold and that six-digit HSN was indeed reported on tax invoices and GSTR-1. Sample invoices, GSTR-1 HSN summary tables and the IRP-generated IRNs were filed.
Outcome: ADT-02 accepted the HSN-reporting compliance; the Section 125 penalty proposal was dropped; the matter closed without referral to DRC-01.

Why these Ambattur SIDCO engagements look the way they do: On the ground in Ambattur SIDCO, the cluster of heavy manufacturing, auto components, engineering businesses that defines Ambattur SIDCO's commercial fabric; for Ambattur SIDCO units balancing production cycles with monthly GST and quarterly TDS compliance.

Client Reviews

What Ambattur SIDCO Clients Say

Ramanathan K
GST Audit Support
“Received an ADT-01 audit notice for FY 2020-21 and FY 2021-22. FilingPro compiled all 24 months of returns, reconciled GSTR-1 vs GSTR-3B vs books and prepared Table 8 GSTR-9 working before the audit team arrived. ADT-02 had only minor findings — closed via DRC-03 with no demand notice.”
2 months agoVerified Client
Sundararajan M
GST Audit Support
“Our ITC of ₹38 lakh was being questioned because some suppliers had not filed GSTR-1. FilingPro defended the credit citing Tvl. Diya Agencies and demonstrated Section 16 compliance with payment evidence. Audit team accepted the position — full ITC retained.”
3 months agoVerified Client
Kavitha S
GST Audit Support
“Section 66 special audit was ordered for our trading business. FilingPro coordinated with the Commissioner-nominated CA, gave full record access, prepared Section 17(5) workings and RCM register. Final report had no adverse findings on valuation or ITC.”
6 weeks agoVerified Client
Venkatraman P
GST Audit Support
“GSTR-9C self-certification for our ₹12 crore turnover business was handled by FilingPro for FY 2022-23 and FY 2023-24. Reconciliation between audited financials and GSTR-9 was tight — no Table 8 difference, no HSN summary gap. Filed before 31 December both years.”
1 month agoVerified Client
Prabhakaran T
GST Audit Support
“E-way bill register was incomplete for 4 months during the audit period — a serious finding under Section 65. FilingPro reconstructed the register from transporter LRs and warehouse logs, presented documentary backup to the audit team and avoided what would have been a substantial penalty.”
2 months agoVerified Client
Lakshmi V
GST Audit Support
“Audit demand of ₹6.5 lakh was raised on RCM not paid for advocate fees over 3 years. FilingPro filed Section 107 first appeal with 10% pre-deposit, defended that the advocate was salaried and not in independent practice. Demand was set aside at first appellate stage.”
4 months agoVerified Client
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Common Questions

GST Audit Support FAQ — Ambattur SIDCO

Common questions from Ambattur SIDCO clients. Call 9566-068-468 for specific queries.

Section 66 allows an Assistant Commissioner (not below this rank) with prior approval of the Commissioner to direct a Chartered Accountant or Cost Accountant — nominated by the Commissioner — to audit a registered person where the officer is of the opinion that the value declared is not correct or the credit availed is not within the normal limits. The order is issued in ADT-03 and the auditor's report is submitted within 90 days, extendable by another 90 days.
Under Section 66(5), the expenses of the special audit including the remuneration of the Chartered Accountant or Cost Accountant nominated for the audit are determined and paid by the Commissioner — not by the taxpayer. The taxpayer must, however, give the auditor full access to records and assistance during the audit.
Not sure whether GST Audit Support applies to you? Call 9566-068-468 and describe your situation — we will tell you plainly whether you need it, when, and what it involves, before you spend anything. Many Ambattur SIDCO enquiries start exactly this way.
Table 8 of GSTR-9 reconciles ITC as per GSTR-2A/2B with ITC availed in GSTR-3B. Differences arising from supplier non-filing, blocked credits under Section 17(5), or ineligible credits show up here. Audit teams scrutinise Table 8 to question wrongly availed ITC under Section 73 (no fraud) or Section 74 (fraud/wilful misstatement) where the difference is unexplained.
Yes. Section 66(6) requires the registered person to be given an opportunity of being heard on any material gathered in the special audit which is proposed to be used in any proceeding. After the report, if the proper officer initiates a Section 73 or 74 demand based on the findings, the registered person can contest the demand through the regular SCN-reply-adjudication-appeal route.
We keep payment simple for Ambattur SIDCO clients — pay digitally by UPI or bank transfer against a proper invoice. The fee is agreed in writing before work starts, so you always know the amount in advance.
Rule 101 of the CGST Rules operationalises Section 65. Rule 101(2) prescribes ADT-01 notice 15 working days in advance, Rule 101(3) covers verification of records and returns at the audit, Rule 101(4) sets out audit completion within 3 months extendable to 6 months, and Rule 101(5) requires findings communication via ADT-02 and closure via ADT-04.
Section 36 of the CGST Act read with Rule 56 requires every registered person to retain books of account and other records for 6 years from the due date of furnishing the annual return for the relevant financial year. Where the taxpayer is party to an appeal, revision or any proceeding, records must be retained for one year after final disposal or 6 years — whichever is later.
Ambattur SIDCO (PIN 600098) falls under the Ambattur Division, Chennai North commissionerate. Getting the jurisdiction right matters because registrations, filings and notices are routed through the correct office. We confirm and handle the right jurisdiction for every Ambattur SIDCO engagement.
Section 65 audit is conducted at the principal place of business as registered in REG-06. If the audit covers transactions of branches (additional places of business), the records of those branches must be produced at the principal place or made accessible to the audit team. Ambattur SIDCO businesses with branches outside Tamil Nadu must coordinate branch records to the audit venue.
Generally no. Once a Section 65 audit has been completed for a period and ADT-04 has been issued, that period cannot be re-audited under Section 65. Special audit under Section 66 is a distinct power and may be invoked separately if the Assistant Commissioner forms an opinion on incorrect valuation or excess credit. Re-opening a closed Section 65 audit requires fresh material and is exceptional.
Very likely yes — Ambattur SIDCO has a heavy industrial cluster profile where heavy manufacturing and allied activity creates exactly the compliance needs GST Audit Support addresses. We see these requirements here often and handle them efficiently. If it does not apply to you, we will say so.
Yes. Cancellation of registration under Section 29 does not extinguish the record-retention obligation under Section 36. Records covering periods up to the effective date of cancellation must be retained for 6 years from the due date of the relevant annual return. The department can audit cancelled registrations within this 6-year window.
Yes. Rule 102 of the CGST Rules deals with special audit under Section 66. Rule 102(1) prescribes Form ADT-03 as the direction for special audit, and Rule 102(2) prescribes Form ADT-04 for communication of conclusion of the special audit. Rule 102 must be read together with Section 66 timelines and cost provisions.
Where the proper officer passes a demand order under Section 73(9) or 74(9) following an audit, the registered person can file an appeal under Section 107 to the Appellate Authority within 3 months (extendable by 1 month) along with a 10% pre-deposit of the disputed tax. Further appeals lie to the GST Appellate Tribunal under Section 112 once it is constituted.
Section 66(2) requires the nominated auditor to submit the special audit report within 90 days of the ADT-03 order. The Assistant Commissioner may, on application by the auditor or the registered person and on reasonable grounds, extend the period by a further 90 days — taking the maximum to 180 days from the ADT-03 order date.

From Chennai - Tiruttani - Renigunta Road, Chennai Bypass Expressway, Vanagaram - Ambathur - Puzhal Road, Thiruverkadu - Ambattur Road and Ambit Park Road through to Bazaar Street, Thirupathi Kudai Rd, 8th Street and Ambattur Industrial Estate Road, our team covers GST Audit Support for businesses right across Ambattur SIDCO and its main commercial roads.

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