GST Audit & Health Check: What It Actually Involves
A GST Audit & Health Check is not a compliance formality — it is the exercise that finds the mismatches, blocked-credit errors, and reconciliation gaps in your GST records before a department officer does. Since the Finance Act 2021 removed the mandatory CA-certified GST audit under Section 35(5), many businesses assume the need for independent GST review disappeared with it. It did not — the self-certified GSTR-9C reconciliation statement, the department's own audit powers under Sections 65 and 66 of the CGST Act, and the sheer complexity of monthly return-to-books reconciliation mean an independent, CA-led health check is often more valuable now than when it was mandatory.
Understanding the Service
GST Audit & Health Check is an independent review of a taxpayer's GST records, returns, and underlying transactions to verify accuracy, identify compliance gaps, and quantify exposure before it is discovered by the tax department. The term "GST audit" carries two distinct meanings in current practice. First, there is the statutory audit power the department itself holds — a General Audit under Section 65 of the CGST Act, conducted by tax officers at the taxpayer's place of business or the department's office, and a Special Audit under Section 66, ordered by an officer through a nominated Chartered Accountant or Cost Accountant when the complexity of the case warrants deeper scrutiny.
For the full scope, current process and what PNPC includes, see the dedicated GST Audit & Health Check service page.
When You'd Need This
- You have received a scrutiny notice under Section 61, an ASMT-10 discrepancy notice, or an audit intimation in Form ADT-01 — a rapid pre-response health check identifies your actual exposure before you reply to the department
- Growth has outpaced your internal GST compliance capacity — multiple GSTINs, multiple states, or a jump in transaction volume where monthly filing discipline may not have kept pace
- ITC claims have grown significantly year-on-year, or GSTR-2B mismatches have appeared in monthly filings without being resolved — unresolved ITC mismatches compound into a larger liability the longer they are left unaddressed
- Preparing for a fundraise, acquisition, or lender due diligence — a clean, independently reviewed GST compliance position removes a common source of valuation adjustment or deal friction
When It Isn't the Right Fit
- Very early-stage business with minimal transaction volume, a single GSTIN, and monthly returns already reconciled carefully as part of routine bookkeeping — a periodic light review during annual accounts finalisation may suffice for now
- Composition scheme taxpayers — GST audit and GSTR-9C do not apply to composition dealers; your compliance needs are governed by GSTR-4 and the composition scheme rules instead
- You already have a robust, actively used monthly GST reconciliation process run by a competent in-house team or existing CA, with no unresolved GSTR-2B mismatches and no department correspondence pending — a targeted spot-check rather than a full health check may be adequate
Questions We're Actually Asked
Is GST audit still mandatory in India — I thought the CA certification requirement was removed?
The mandatory CA-certified GST audit under the erstwhile Section 35(5) of the CGST Act was removed by the Finance Act 2021, effective for FY 2020-21 onwards. So in that specific statutory sense, mandatory CA-certified GST audit no longer exists. However, the department retains its own audit powers under Sections 65 (General Audit) and 66 (Special Audit) of the CGST Act, which can be exercised at any time regardless of the self-certification change. "GST Audit & Health Check" as we offer it is a voluntary, advisory service — not a statutory filing requirement — designed to give you the same independent verification that the old mandatory audit used to provide.
What is the difference between a GST Audit & Health Check and simply filing GSTR-9C?
GSTR-9C is a reconciliation statement you file on the GST portal — a structured comparison of your GST returns against your audited financial statements, self-certified by you (or your authorised signatory). A GST Audit & Health Check is the independent analytical work that should precede an accurate GSTR-9C: verifying every reconciliation item, testing ITC eligibility line by line, checking RCM compliance, and quantifying any exposure — before you sign off on the self-certification. You can technically file GSTR-9C without a prior health check, using only your own team's reconciliation work; the health check exists to independently verify that work is correct.
Who is required to file GSTR-9 and GSTR-9C, and how does that relate to needing a health check?
Composition taxpayers file GSTR-4 instead and are outside GSTR-9/9C.
Getting This Right From the Start
Speak directly with a PNPC Chartered Accountant about your GST compliance position — before the department asks the questions for you. Not a call centre, not a generic checklist service — a practising CA who has represented clients through actual departmental audits and knows exactly what an officer will look for.
PNPC Global has advised Chennai, Bangalore and Hyderabad businesses since 1986. Explore the full Audit & Assurance practice for related services, or go straight to the GST Audit & Health Check page for specifics.
Specific rates, fees, thresholds and deadlines are set by the relevant authority and change over time — this article deliberately does not quote figures that could go stale. Confirm current numbers directly with PNPC or the official source before you act.