Three audits, three different laws, three different purposes — but businesses routinely confuse them, or assume passing one covers the others. Here’s a side-by-side comparison for Tax Year 2026-27.
Why These Three Get Confused
Every year, businesses ask some version of the same question: “We already got audited — why does the GST department want another audit?” or “Our turnover is only ₹80 lakh, do we still need an audit?” The confusion is understandable — all three exercises involve a Chartered Accountant, all three examine the same underlying books of account, and all three produce a report. But they are governed by three completely different statutes, triggered by different thresholds, and serve different masters: shareholders, the Income Tax Department, and the GST Department respectively.
Getting the distinction right matters — missing a Tax Audit deadline because you assumed your Statutory Audit covered it is a common, entirely avoidable compliance failure.
Three Audits at a Glance
Statutory Audit
- Governed by: Companies Act, 2013
- Applies to: Every company & LLP above LLP Act thresholds — regardless of turnover or profit
- Purpose: True and fair view of financial statements for shareholders/members
- Conducted by: Statutory Auditor appointed under Section 139
- Output: Audit Report under Section 143, appended to financial statements
Tax Audit
- Governed by: Section 44AB, IT Act 1961 (now Section 63, IT Act 2025)
- Applies to: Business/profession crossing turnover or receipts thresholds
- Purpose: Verify income computation for accurate tax reporting
- Conducted by: Chartered Accountant, appointed specifically for this purpose
- Output: Form 3CA/3CB + 3CD (Form 26 under IT Act 2025 once notified)
GST Audit / Reconciliation
- Governed by: CGST Act, 2017 (Sections 35, 44, 65, 66)
- Applies to: Registered persons above turnover thresholds; departmental audit has no threshold
- Purpose: Reconcile GST returns with audited financials; verify correctness of self-assessment
- Conducted by: Self-certified by the taxpayer since FY 2020-21 (no CA/CMA sign-off required)
- Output: GSTR-9 (annual return) + GSTR-9C (reconciliation statement)
The most common misconception
Many business owners still believe GST Audit means a Chartered Accountant certifies GSTR-9C, as it did before FY 2019-20. Since the Finance Act, 2021 amendment, GSTR-9C is self-certified by the taxpayer — no mandatory CA/CMA certification. This didn’t remove the need for careful reconciliation; it shifted the responsibility for its accuracy squarely onto the taxpayer, which if anything raises the professional advisory role a practitioner plays in preparing it.
Statutory Audit — Explained
A Statutory Audit is an independent examination of a company’s (or qualifying LLP’s) financial statements, mandated by the Companies Act, 2013 or the LLP Act, 2008, irrespective of turnover, profit, or size. Every company incorporated in India — private, public, or a One Person Company — must have its accounts audited annually, from the very first year of incorporation, even if it has zero turnover.
Who it applies to
All companies registered under the Companies Act, 2013. LLPs are required to get accounts audited only if turnover exceeds ₹40 lakh or capital contribution exceeds ₹25 lakh in a financial year.
Who conducts it
A Chartered Accountant (or firm of CAs) holding a valid Certificate of Practice, appointed as Statutory Auditor by shareholders under Section 139 — independent of management, and subject to rotation rules for certain companies.
What it produces
An Audit Report under Section 143 opining whether the financial statements give a true and fair view, filed with the Registrar of Companies along with the annual financial statements (Form AOC-4) after adoption at the AGM.
Tax Audit — Explained
A Tax Audit is triggered when a business or professional’s turnover or gross receipts cross specified thresholds, and verifies that income has been computed and reported correctly for income tax purposes. It was introduced under Section 44AB of the Income Tax Act, 1961 — now renumbered as Section 63 under the Income Tax Act, 2025, with the presumptive taxation provisions correspondingly placed under the new Section 58. The substance is unchanged; only the section number and, eventually, the reporting form (Form No. 26 replacing Forms 3CA/3CB/3CD) will change.
| Category | Base Threshold | Enhanced Threshold | Condition for Enhanced Limit |
|---|---|---|---|
| Business | ₹1 Crore turnover | ₹10 Crore | Cash receipts and cash payments each ≤ 5% of total transactions |
| Profession | ₹50 Lakh gross receipts | — | Enhanced digital threshold does not apply to professions |
| Presumptive business — Sec. 44AD | Profit declared below 6%/8% | — | Audit mandatory if opting out and profit is below the presumptive rate |
| Presumptive profession — Sec. 44ADA | ₹50 Lakh (>5% cash) | ₹75 Lakh | Cash receipts ≤ 5% of gross receipts |
Due dates for FY 2025-26 (AY 2026-27)
- Tax Audit Report (Form 3CA/3CB + 3CD): 30 September 2026
- ITR filing where audit applies: 31 October 2026
- Transfer pricing cases (Form 3CEB applicable): audit report and ITR due 31 October 2026
- Penalty for default under Section 271B: 0.5% of turnover, capped at ₹1,50,000
GST Audit — Explained
“GST Audit” today mostly refers to the annual reconciliation exercise — matching GSTR-1, GSTR-3B, and GSTR-2B data against the audited books of account and reporting differences. This changed substantially in FY 2020-21: what was earlier a mandatory Chartered Accountant/Cost Accountant-certified audit under Section 35(5) of the CGST Act is now a taxpayer self-certified reconciliation statement, following the Finance Act, 2021 amendment.
| Aggregate Turnover | Requirement | Certification |
|---|---|---|
| Up to ₹2 Crore | GSTR-9 (annual return) generally optional | — |
| Above ₹2 Crore | GSTR-9 (annual return) mandatory | Self-certified |
| Above ₹5 Crore | GSTR-9 and GSTR-9C (reconciliation statement) mandatory | Self-certified (no CA/CMA sign-off since FY 2020-21) |
Separately, the CGST Act preserves two audit powers that operate independent of any turnover threshold and can be initiated by the department regardless of size:
Departmental Audit — Sec. 65
The Commissioner may order an audit of any registered person’s records at their place of business, on notice, for any period. No turnover threshold applies.
Special Audit — Sec. 66
During scrutiny, investigation, or assessment, an officer can direct a special audit by a nominated CA/CMA if the value or ITC declared is found to be complex or under-verified — at the taxpayer’s expense.
Due date & penalty
- GSTR-9 / GSTR-9C for FY 2025-26 due by 31 December 2026 (subject to government extension)
- Late filing fee: ₹200/day (₹100 CGST + ₹100 SGST), capped at 0.25% of turnover in the State/UT
- The ₹5 crore threshold is computed PAN-wise, but GSTR-9C is filed separately for each GSTIN
Master Comparison Table
| Parameter | Statutory Audit | Tax Audit | GST Audit |
|---|---|---|---|
| Governing Law | Companies Act, 2013 / LLP Act, 2008 | Sec. 44AB, IT Act 1961 (Sec. 63, IT Act 2025) | Sec. 35, 44, 65, 66 — CGST Act, 2017 |
| Applicability Trigger | Incorporation as a company (or LLP threshold) | Turnover / gross receipts threshold | Aggregate turnover threshold (or dept. discretion) |
| Threshold | None — applies from Year 1 | ₹1 Cr (biz) / ₹50 L (profession) | ₹2 Cr (GSTR-9) / ₹5 Cr (GSTR-9C) |
| Purpose | True & fair view for shareholders | Correct computation of taxable income | Reconcile returns with books; verify self-assessment |
| Conducted By | Statutory Auditor (CA, appointed u/s 139) | Chartered Accountant | Self-certified by taxpayer |
| Output Document | Audit Report u/s 143 + Financial Statements | Form 3CA/3CB + 3CD | GSTR-9 + GSTR-9C |
| Filed With | Registrar of Companies (Form AOC-4) | Income Tax e-Filing Portal | GST Portal |
| Typical Due Date | Within 30 days of AGM (AOC-4) | 30 September following the FY | 31 December following the FY |
| Penalty for Default | Fine on company + officers in default | 0.5% of turnover, max ₹1,50,000 (Sec. 271B) | ₹200/day, capped at 0.25% of turnover |
Where They Overlap
Despite different governing laws, all three audits start from the same set of books — which is exactly why discrepancies between them attract attention from tax authorities.
Same source data
All three audits ultimately reconcile against the same ledgers, sales register, and purchase register — a company doesn’t maintain separate books for each audit.
Turnover cross-verification
GSTR-9C explicitly reconciles GST turnover against audited financial statement turnover. A mismatch here often triggers scrutiny under both GST and Income Tax law simultaneously.
Shared reliance on Tax Audit figures
Departmental GST risk-scoring increasingly flags cases where revenue reported in the Tax Audit (Form 3CD) diverges from GST return turnover — even a timing difference needs a documented explanation.
One engagement, often one auditor
For many mid-sized businesses, the same CA firm handles Statutory Audit, Tax Audit, and GST reconciliation — creating efficiency, but the three reports remain legally distinct deliverables with separate filing obligations.
Key point: Completing a Statutory Audit does not exempt a company from Tax Audit or GST Audit obligations, and vice versa. Each is an independent statutory requirement with its own trigger, its own report, and its own penalty for default — a business can be fully compliant on one and in default on another.
Common Questions
If a private limited company has zero turnover, does it still need a Statutory Audit?
Yes. Statutory Audit under the Companies Act applies to every registered company regardless of turnover or activity level — even a dormant or shell company must have its accounts audited annually.
Does Tax Audit certification also satisfy GST reconciliation requirements?
No. Form 3CD (Tax Audit) and GSTR-9C (GST reconciliation) serve different purposes and are filed with different authorities. However, figures from one are frequently cross-checked against the other, so consistency between them matters even though the filings are separate.
Can a company be exempt from GST Audit but still require a Tax Audit?
Yes — this is common. A business with turnover of, say, ₹3 crore is below the ₹5 crore GSTR-9C threshold but above the ₹1 crore Tax Audit threshold, so it must complete a Tax Audit while only needing to file GSTR-9 (not GSTR-9C) for GST purposes.
Who bears the cost of a Special Audit ordered under Section 66 of the CGST Act?
The taxpayer bears the cost, determined and prescribed by the Commissioner, even though the auditor is nominated by the department rather than chosen by the taxpayer.
Is a Chartered Accountant required for GST Audit today?
Not for the self-certified GSTR-9C reconciliation statement — the taxpayer signs it themselves. A CA/CMA is still required only where the department specifically orders a Special Audit under Section 66.