Summary: For Assessment Year 2026-27, tax audits relating to FY 2025-26 continue under the Income-tax Act, 1961 framework and the familiar Forms 3CA/3CB with Form 3CD remain relevant. The new Income-tax Act, 2025 took effect from 1 April 2026, but its unified Form No. 26 is intended for audits under section 63 for Tax Year 2026-27 and later, not as a substitute for the AY 2026-27 audit forms. CBDT Circular No. 07/2026 has also extended the specified AY 2026-27 audit-report deadline from 30 September 2026 to 21 October 2026 for the covered category. This article explains which form applies, what each form does, the principal audit thresholds, the transition to Form 26, practical reconciliation work and common filing errors.
Relevant TaxGuru References: Section 44AB tax audit guide | Form No. 26 transition | 2026 forms and compliance changes
- AY 2026-27 Tax Audit: Forms 3CA, 3CB & 3CD Still Apply; New Form 26 Starts Later
- Why AY 2026-27 Still Uses Forms 3CA, 3CB and 3CD
- Who Is Generally Covered by Tax Audit
- 21 October 2026 Extended Audit Deadline
- What Form 3CD Work Should Be Completed
- New Form No. 26: What Changes from Tax Year 2026-27
- Practical Checklist Before Upload
- FAQs
- Key Takeaways
AY 2026-27 Tax Audit: Forms 3CA, 3CB & 3CD Still Apply; New Form 26 Starts Later
Why AY 2026-27 Still Uses Forms 3CA, 3CB and 3CD
The changeover to the Income-tax Act, 2025 creates an unusual compliance year. The new Act is operative from 1 April 2026, but the income and transactions being audited for AY 2026-27 belong to FY 2025-26, when the Income-tax Act, 1961 governed the tax year. TaxGuru’s detailed transition coverage explains that AY 2026-27 tax audits continue with the existing Forms 3CA, 3CB and 3CD, whereas the new unified Form No. 26 applies to tax audit under section 63 of the Income-tax Act, 2025 for Tax Year 2026-27.
Form 3CA is used where the assessee’s accounts are already required to be audited under another law, such as the Companies Act or another governing statute. Form 3CB is the audit report where the accounts are not required to be audited under another law. In both situations, Form 3CD contains the detailed statement of tax particulars. The distinction matters because the auditor’s reporting framework and the documents attached differ even though Form 3CD is common to both routes.
Who Is Generally Covered by Tax Audit
Under the section 44AB framework applicable to FY 2025-26, business taxpayers generally enter tax audit when turnover or gross receipts exceed the statutory threshold. The ordinary business threshold is ₹1 crore, while the higher ₹10 crore threshold can apply where both cash receipts and cash payments are within the prescribed 5% limits. For profession, the general gross-receipts threshold is ₹50 lakh. Tax audit can also arise in specified presumptive-tax situations when the taxpayer declares income below the prescribed presumptive level and satisfies the other statutory conditions.
These thresholds should not be applied by looking only at the profit and loss account total. Turnover, gross receipts, cash-receipt ratios and cash-payment ratios must be computed consistently with the governing provision and professional guidance. Businesses with digital collections but significant cash expenses, or vice versa, should separately test both limbs before using the ₹10 crore threshold.
21 October 2026 Extended Audit Deadline
CBDT Circular No. 07/2026 dated 28 September 2026 extended the specified audit-report due date for AY 2026-27 from 30 September 2026 to 21 October 2026 for the covered category. The corresponding return-filing due date for persons in the relevant audit category was moved from 31 October 2026 to 21 November 2026. The audit date and return date are therefore separate controls and should not be interchanged.
The extension is not a relaxation of the audit itself. It only changes the outer filing date. Auditors should use the additional time to close pending reconciliations, obtain management representations, verify statutory dues and complete clause-wise Form 3CD reporting.
What Form 3CD Work Should Be Completed
A robust Form 3CD process begins with a clause-wise information request and a reconciliation matrix. The audit team should reconcile turnover with GST returns, e-invoice records and books; compare TDS/TCS ledgers with returns and challans; review related-party payments and specified-person transactions; examine depreciation and fixed assets; test statutory dues; identify inadmissible expenses; and reconcile tax credits with Form 26AS and AIS/TIS where relevant.
Particular attention is required where accounting classification and tax treatment differ. Capital expenditure charged to revenue, prior-period items, employee contributions, provisions, cash payments, loans and deposits, property transactions and deductions linked to payment conditions can create reporting differences. The audit file should explain the basis adopted rather than merely reproduce ledger totals.
New Form No. 26: What Changes from Tax Year 2026-27
The Income-tax Rules, 2026 introduce Form No. 26 for tax audit under section 63 of the Income-tax Act, 2025. TaxGuru’s coverage notes that it consolidates the functions historically performed by Forms 3CA, 3CB and 3CD into a single structured form. Its parts distinguish cases where accounts are audited under another law from cases where they are not, while retaining a common statement of particulars.
The practical lesson for professionals is to maintain two compliance maps during the transition. AY 2026-27 should be completed under the old-form framework. For Tax Year 2026-27, firms should separately update checklists, data extraction and client information requests for Form 26. Using the new form prematurely for AY 2026-27, or assuming the old forms continue indefinitely, can both lead to avoidable errors.
Practical Checklist Before Upload
Confirm the applicable audit provision and threshold; identify whether Form 3CA or 3CB applies; complete Form 3CD clause mapping; reconcile GST, TDS/TCS and financial statements; review cash receipt/payment ratios where the ₹10 crore threshold is relied upon; verify PAN and registration details; check the auditor’s digital-signature and portal access; upload within the applicable due date; complete assessee acceptance where required; and preserve the final acknowledgement and signed working papers.
Taxpayers should also leave sufficient time between audit completion and ITR filing. Audit adjustments can affect depreciation, disallowances, deductions, brought-forward losses and tax computation. Filing the return immediately after an incomplete audit defeats the purpose of the extended timeline.
FAQs
1. Which forms apply for AY 2026-27 tax audit?
Forms 3CA or 3CB, together with Form 3CD, continue for FY 2025-26/AY 2026-27 under the transition position.
2. Does Form 26 replace them for AY 2026-27?
No. Form 26 is for tax audit under section 63 of the Income-tax Act, 2025 for Tax Year 2026-27 and later.
3. What is the extended audit deadline?
For covered AY 2026-27 cases, 21 October 2026.
4. Is the ITR also due on 21 October?
No. The corresponding covered return deadline is 21 November 2026.
5. When is Form 3CA used?
Where accounts are audited under another law.
6. When is Form 3CB used?
Where the tax audit applies but accounts are not audited under another law.
Key Takeaways
- Why AY 2026-27 Still Uses Forms 3CA, 3CB and 3CD.
- Who Is Generally Covered by Tax Audit.
- 21 October 2026 Extended Audit Deadline.
- What Form 3CD Work Should Be Completed.
- New Form No. 26: What Changes from Tax Year 2026-27.
- Practical Checklist Before Upload.
Disclaimer: This article is for general informational and educational purposes and does not constitute legal, tax, audit or professional advice. Tax-audit applicability, forms and due dates depend on the relevant assessment/tax year and taxpayer facts. Readers should verify CBDT/Income Tax Department instructions and obtain professional advice. TaxGuru, its owners, management, editors, authors, employees and associated persons accept no responsibility or liability for any loss, damage, consequence, decision or action arising from reliance on or use of this article.
