Third Proviso to Section 44AB: When Statutory Audit Satisfies Tax Audit (AY 2026-27)
Updated: Sep 28
Direct answer: The third proviso to Section 44AB allows a person whose accounts are already required to be audited under another law to use that statutory audit as sufficient compliance with the audit-of-accounts requirement under Section 44AB, provided the other-law audit is completed before the tax-audit specified date and the person also furnishes the statutory audit report plus the further tax-audit report in the prescribed form. For AY 2026-27, Rule 6G means this generally translates into Form 3CA together with Form 3CD, not Form 3CB.
Update — 28 September 2026: CBDT changed the specified AY 2026–27 tax-audit report deadline from 30 September to 21 October 2026 and the related audited return deadline from 31 October to 21 November 2026. The separate Form 3CEB timeline is unchanged. Official Income Tax Department announcement.
Third Proviso to Section 44AB: What Does It Actually Say?
The wording commonly referred to as the third proviso to Section 44AB addresses an overlap that affects companies and other entities subject to an audit under another law. Section 44AB does not require the taxpayer to duplicate the same financial-statement audit merely because tax audit also applies. Instead, where the accounts are required to be audited under another law, the other-law audit can satisfy the audit-of-accounts limb of Section 44AB if it is completed before the specified date.
That relief does not eliminate tax-audit reporting. The taxpayer must still furnish, by the specified date, the audit report required under the other law and a further report by an accountant in the form prescribed under Section 44AB. The current Rule 6G identifies that form as Form 3CA, while the detailed tax particulars remain in Form 3CD.
Who Can Use the Third Proviso to Section 44AB?
The provision matters when two conditions overlap: first, the person is required to get accounts audited under another law; and second, Section 44AB also applies for the same relevant year. Typical examples include companies whose financial statements are subject to statutory audit under the Companies Act, 2013 and certain entities audited under sector-specific legislation.
The practical question is not whether the entity has voluntarily obtained an audit. The wording is concerned with a person who is required by or under another law to get the accounts audited. A voluntary audit does not automatically convert a Form 3CB case into a Form 3CA case.
A company subject to statutory audit under the Companies Act and also covered by Section 44AB ordinarily uses Form 3CA with Form 3CD.
A business or professional not required to have accounts audited under another law ordinarily uses Form 3CB with Form 3CD when Section 44AB applies.
The statutory audit must be completed before the Section 44AB specified date if the taxpayer wants to rely on the proviso.
The other-law audit report does not replace Form 3CD; tax-specific particulars still need separate reporting.
Form 3CA vs Form 3CB Under Rule 6G
Rule 6G is the operational rule that converts the Section 44AB distinction into the correct report form. It states that a person required under another law to get accounts audited uses Form 3CA. A person carrying on business or profession who is not in that category uses Form 3CB. In both cases, the prescribed particulars are furnished in Form 3CD.
Situation | Tax-audit report | Detailed particulars |
|---|---|---|
Accounts audited under another law | Form 3CA | Form 3CD |
No audit required under another law | Form 3CB | Form 3CD |
Other-law audit completed after tax-audit specified date | Proviso may not provide sufficient compliance | Review timing and filing consequences |
For a fuller form-selection explanation, see PGT & Associates’ Form 3CA vs Form 3CB vs Form 3CD for AY 2026-27 guide.
AY 2026-27 Deadline: Why the Timing Condition Matters
For FY 2025-26 / AY 2026-27, the Income Tax Department has confirmed that the old Income-tax Act, 1961 reporting framework continues even though the Income Tax Act, 2025 is already in force from 1 April 2026. Form 3CA/3CB with Form 3CD therefore remains the applicable tax-audit framework for AY 2026-27.
CBDT changed the ordinary AY 2026–27 tax-audit report deadline from 30 September to 21 October 2026 and the related audited return deadline from 31 October to 21 November 2026. Transfer-pricing cases retain a separate timeline. This matters to the third proviso: an entity relying on an audit under another law must complete that audit before the applicable Section 44AB specified date and furnish the required reports in time.
The broader deadline mechanics are explained in PGT & Associates’ Tax Audit AY 2026–27: Forms 3CA/3CB/3CD, now due 21 October.
Worked Example: Company With Companies Act Audit and Tax Audit
Assume ABC Private Limited closes its books on 31 March 2026. It is required to undergo statutory audit under the Companies Act, 2013 and its tax position also brings it within Section 44AB for AY 2026-27. The company completes the statutory audit on 20 September 2026.
Because the company is already required by another law to get its accounts audited and the statutory audit is completed before the Section 44AB specified date, it can rely on the third proviso. The tax-audit reporting package would ordinarily comprise Form 3CA, which refers to the audit under the other law, together with Form 3CD containing the tax-specific particulars.
Now change one fact: the statutory audit is not completed until after 21 October 2026. For an ordinary case covered by the extension, the third-proviso timing condition becomes a problem. Finance teams should not assume that a later statutory audit cures the Section 44AB compliance position; review the facts and applicable consequences.
What Form 3CA Does — and What It Does Not Do
Form 3CA is not a second statutory audit opinion. Its role is to connect the tax-audit reporting requirement with accounts that have already been audited under another law. The tax auditor refers to that audit and reports prescribed tax particulars through Form 3CD.
It does not make Form 3CD optional.
It does not remove the need to reconcile audited financial statements with the income-tax computation and return.
It does not extend the Section 44AB deadline merely because the statutory audit timetable is delayed.
It does not mean every entity with audited accounts should use Form 3CA; the audit must be required by or under another law.
Third Proviso to Section 44AB: Practical Reconciliation Checklist
Confirm the exact law under which the entity’s accounts are required to be audited and preserve the applicability working.
Map the statutory-audit completion timetable against the Section 44AB specified date before the year-end closing calendar is finalised.
Use Form 3CA rather than Form 3CB where Rule 6G(a) applies.
Reconcile the final audited financial statements with the trial balance used for Form 3CD reporting.
Track all post-audit adjustments and ensure they flow consistently into Form 3CD and the income-tax return.
Reconcile GST, TDS/TCS, fixed assets, related-party transactions, statutory dues and other high-risk Form 3CD clauses to the audited books.
Confirm that the statutory audit report and the further tax-audit report are furnished by the applicable specified date.
Retain Board-approved financial statements, signed audit reports, tax-audit working papers and filing acknowledgements in one indexed compliance file.
Common Mistakes
Assuming that completion of a Companies Act audit automatically completes tax audit without Form 3CA and Form 3CD.
Using Form 3CB even though an audit under another law is mandatory.
Treating a voluntary audit as an audit required under another law.
Allowing the statutory-audit timetable to run beyond the tax-audit specified date without evaluating the Section 44AB consequence.
Filing Form 3CD from a pre-final trial balance that no longer matches the signed statutory financial statements.
Confusing AY 2026-27 with Tax Year 2026-27 under the new Act and incorrectly moving to Form 26 one year too early.
Statutory Audit vs Tax Audit: Keep the Two Timelines Separate
A company can have both a Companies Act statutory-audit timetable and an income-tax reporting timetable. The third proviso coordinates the two audit requirements; it does not merge all corporate filing deadlines into one date. AGM, financial-statement filing and annual-return timelines under company law remain separate compliance questions.
For the company-law calendar, see Statutory Audit Last Date 2026 for Companies: AGM, AOC-4 & Annual Return Timeline.
Frequently Asked Questions
1. What is the third proviso to Section 44AB?
It is the proviso that permits a person already required under another law to get accounts audited to treat that audit as sufficient compliance with the audit-of-accounts requirement under Section 44AB, subject to completion before the specified date and furnishing the other-law audit report plus the further prescribed tax-audit report.
2. If a company has a statutory audit, is Form 3CD still required?
Yes. Rule 6G requires Form 3CA for a person whose accounts are audited under another law and Form 3CD for the prescribed tax particulars.
3. When is Form 3CB used instead?
Form 3CB is used where the person carrying on business or profession is not a person whose accounts are required to be audited under another law.
4. What is the tax-audit due date for AY 2026-27?
For the ordinary category covered by CBDT's 28 September announcement, the tax-audit report date changed from 30 September to 21 October 2026 and the related return date from 31 October to 21 November 2026. Transfer-pricing Form 3CEB cases generally retain the separate 31 October 2026 report timeline.
5. Does Form 26 apply to AY 2026-27?
No. The Department’s transition guidance confirms that FY 2025-26 / AY 2026-27 continues under the 1961 Act with Forms 3CA/3CB/3CD. Form 26 applies from Tax Year 2026-27 under the Income Tax Act, 2025.
Primary Sources
Practical Takeaway
The third proviso to Section 44AB is a coordination rule, not an exemption from tax-audit reporting. Where a statutory or other-law audit is mandatory, complete that audit before the Section 44AB specified date, use Form 3CA where Rule 6G requires it, and still complete a fully reconciled Form 3CD. The safest workflow is to align statutory-audit closure, tax-audit working papers and return preparation from the start rather than treating them as three independent year-end exercises.
PGT & Associates assists businesses with tax-audit applicability, statutory-to-tax-audit reconciliations, Form 3CA/3CD readiness and year-end compliance reviews. This article is for general professional information and is not a substitute for advice on specific facts.
Practical Compliance & Audit Toolkits (AY 2026-27)
To assist practicing Chartered Accountants, corporate finance controllers, and tax auditors in executing flawless statutory audits and insulating against automated CPC scrutiny:
Free AY 2026–27 Form 3CD working paper and audit checklist
Request the free checklist and working paper through the no-payment form; fulfilment is handled after submitting the request.
Advanced AY 2026–27 Form 3CD toolkit — ₹300
The ₹300 Advanced Form 3CD toolkit includes 51 clause workspaces, Excel working papers, statutory guides and client PBC templates to organise audit evidence; the form accepts order enquiries.
What the Advanced Master Toolkit Contains & Key Practical Benefits:
📁 51 Dedicated Clause Workspaces (Clauses 1 to 44): Comprehensive operational folders covering every complex Form 3CD schedule—from Clause 14 inventory valuation and Clause 21 statutory disallowances to Clause 31 cash limits and Clause 44 GST expenditure reconciliation.
📊 Automated Master Disallowance Aggregator: Dynamic multi-schedule Excel dashboard that rolls up additions across Section 40(a), Section 40A(2)(b), Section 40A(3), Section 43B(h) MSME, and Section 36(1)(va) into total business income impact.
🛡️ Paragraph 3 & 5 Audit Qualification Bank: Repository of judicially vetted notes, observations, and disclaimer drafts for Form 3CA and Form 3CB to protect certifying CAs under NFRA and peer-review audits.
⚖️ Landmark Judicial Defense Notes: Ready-to-use case law matrices (Checkmate Services, Triumph International, Alom Extrusions, etc.) providing bulletproof documentation against CPC 143(1) and faceless assessment additions.
✉️ 51 Ready-to-Send Client Email Templates: Structured PBC (Provided by Client) requisition drafts tailored for client CFOs to collect underlying ledgers, certificates, and vouchers on time.
📝 Standardized Multi-Tier Review Workpapers: Formatted Excel templates with formula integrity, sample data rows, preparer-reviewer sign-off blocks, and UDIN compliance trackers.
Practical Working Paper Examples Included in the Suite:
Clause 20(b) Employee PF/ESI Tracker: Pre-built model applying the Supreme Court's Checkmate Services ruling—automatically isolating employee contributions deposited even one day after the statutory due date (15th of the month) for permanent disallowance, while safeguarding employer contributions allowable under Section 43B.
Clause 26 Section 43B(h) MSME Aging Matrix: Formatted creditor aging workbook sorting Micro & Small suppliers, cross-matching Udyam registration certificates, applying the 15-day (no agreement) or 45-day (written agreement) cut-offs, and calculating exact additions for amounts outstanding as of 31st March.
Clause 31 Section 269SS / 269T Loan & Deposit Audit File: Analytical schedules verifying banking-channel compliance for loans, deposits, and specified advances exceeding ₹20,000, including journal entry loan transfers and penalty defense documentation under Section 271D and 271E.
Clause 44 GST Expenditure Reconciliation Schedule: Table-wise breakdown linking general ledger expenses to GSTR-2B and GSTR-3B filings, segregating registered, composite, exempt, and unregistered vendor expenditure with zero mathematical variance.
Comments