Form 26 Tax Audit Report Under Income Tax Act 2025 — Complete Guide for CAs

What Is Form 26 and Why Does It Replace 3CA/3CB/3CD?

The Income Tax Act 2025, which came into force on 1 April 2026, rewrote the tax audit framework from the ground up. Under the old Income Tax Act 1961, a tax auditor had to file two separate forms: Form 3CA or 3CB (the auditor's report) and Form 3CD (the statement of particulars). Practitioners routinely managed three different form references, two different sets of instructions and separate revision workflows — or no revision at all.

Form 26 consolidates everything into a single document governed by Section 63 of the Income Tax Act 2025 and Rule 47 of the Income Tax Rules 2026. The form has four parts and 53 clauses — up from 44 in the old Form 3CD. More importantly, Rule 47(3) now provides a formal mechanism for the auditor to revise a filed report, something that was missing entirely in the old system.

Effective date: Tax Year 2026-27 onwards (i.e., for FY 2026-27 and all subsequent years). For AY 2026-27 covering FY 2025-26, the old forms 3CA/3CB/3CD remain valid and the due date is 30 September 2026.

Form 26 vs Old Forms — Head-to-Head Comparison

Structure of Form 26 — Parts A, B, C and D

Form 26 is divided into four distinct parts, each serving a specific purpose:

• Part A — Identification details: PAN, name of assessee, name of auditor, UDIN, financial year, date of balance sheet, nature of business or profession.
• Part B — General information: Accounting method, presumptive taxation status (whether declared income is below the 8%/6%/50% threshold), partner ratios for partnership firms, name and version of accounting software used, and cloud storage location of books of account.
• Part C — Audited under another law (replaces Form 3CA route): For assessees whose accounts are already audited under another statute (Companies Act, etc.). The auditor reports that a separate audit was conducted and annexes the relevant report.
• Part D — Audited only under Income Tax Act (replaces Form 3CB route): For assessees not subject to audit under any other law. The auditor independently examines the books and records findings across all 53 clauses.

5 Key New Clause Changes You Must Know

1. Clause 36 — Asset Segregation by Holding Period

Assets must now be classified into two buckets: held for fewer than 180 days and held for 180 days or more. The form does not require you to report specific acquisition or disposal dates — only the holding period category. This directly affects capital gains reporting and depreciation claims.

2. Clause 43 — Remittances via Form 15CA/15CB

All foreign remittances must now be reported with reference to Form 145 Part-D only. Remittances not routed through the prescribed path must be disclosed separately. This clause replaces the earlier Clause 34 TDS compliance reporting for cross-border payments.

3. Clause 53 — Quantitative Details for Trading and Manufacturing

Trading and manufacturing assessees must now use a dedicated schedule with four sub-heads: raw materials, finished goods, by-products and scrap. Opening stock, purchases/production, sales/consumption and closing stock must be reported separately for each sub-head. This replaces the single quantitative details clause in the old Form 3CD.

4. Part B — Accounting Software Disclosure

A new mandatory disclosure requires the auditor to confirm the name and version of the accounting software used and whether books of account are maintained on cloud infrastructure. If cloud storage is used, the location (server geography) must be reported. This is aimed at ensuring data localisation compliance.

5. Part B — Presumptive Taxation Declaration

If the assessee has opted for presumptive taxation under Sections 54, 55 or 56 of the IT Act 2025 (corresponding to the old Sections 44AD, 44ADA, 44AE) but has declared income below the applicable threshold (8%/6% for business, 50% for professionals), this must be explicitly disclosed in Part B, triggering mandatory audit and full accounts maintenance.

Who Must File Form 26?

The filing thresholds under the new Act mirror the old Section 44AB thresholds with one important update — the digital turnover exception is retained:

• Business assessees: Total turnover or gross receipts exceeding ₹1 crore in the tax year
• Digital business exception: Threshold raised to ₹10 crore if 95% or more of all receipts and payments are through digital/banking channels
• Professionals: Gross receipts exceeding ₹50 lakh in the tax year
• Presumptive assessees: Those eligible for presumptive taxation who declare income below the prescribed percentage (8%/6% for business, 50% for professionals)
• Other assessees: Those required to furnish a report of audit under any other provision of the Income Tax Act 2025

How to File Form 26 — Step by Step

• Step 1: Log in to the Income Tax e-filing portal at incometax.gov.in using the assessee's credentials.
• Step 2: The auditor files Form 26 using their own login (not the assessee's login), with a valid Digital Signature Certificate (DSC). Form 26 cannot be filed without DSC — there is no electronic verification code (EVC) option for auditors.
• Step 3: Complete all four parts. Parts C and D are mutually exclusive — complete only the one applicable to the assessee.
• Step 4: The assessee must accept the filed Form 26 on the portal within the prescribed time.
• Step 5 (Revision): If a material error is discovered after filing, the auditor can file a revised Form 26 under Rule 47(3). The original filing date and reason for revision must be disclosed in the revised form.

Transition Timeline — What Applies When

How Glomiq Saves Time on Form 26 Preparation

A significant portion of Form 26 prep time is not analytical — it is repetitive variable work. Client name, PAN, GSTIN, turnover figures, depreciation schedules, partner names and ratios, bank account details, TDS summary amounts — these fields appear across every engagement and take 20–40 minutes to populate correctly per client.

Glomiq automates exactly this step. Upload your standard audit report template once — Glomiq's AI detects every variable field automatically (client name, PAN, turnover, audit period, partner details, etc.). For each new client, fill a simple form and download a perfectly formatted Word or PDF output in under 2 minutes. No copy-paste. No reformatting.

CAs in our network report saving 35–45 minutes per client on routine variable population during audit season. With 30 audit clients, that is 15–22 hours recovered every season.

Frequently Asked Questions

Is Form 26 required for AY 2026-27 (FY 2025-26)?

No. For AY 2026-27 covering FY 2025-26, the old Forms 3CA/3CB/3CD remain applicable with a due date of 30 September 2026. Form 26 applies only from Tax Year 2026-27 (FY 2026-27) onwards. Filing Form 26 for AY 2026-27 would be an error.

What if I file Form 3CD for Tax Year 2026-27 by mistake?

If you file a 3CD for Tax Year 2026-27 (FY 2026-27 onwards), it will not be accepted on the portal — the old forms have been disabled for that year. You must file Form 26. If you have already submitted and realised the form is wrong for an earlier year, use the revision mechanism under Rule 47(3) to file a corrected Form 26.

Can I revise Form 26 after filing?

Yes — this is one of the most significant improvements over the old system. Rule 47(3) of the IT Rules 2026 expressly allows the auditor to file a revised Form 26. The revised form must disclose the date of the original filing and the reason for revision. The old Form 3CD had no equivalent provision, which meant that errors had to be addressed through informal representations.

What are the penalties under the new Form 26 framework?

Section 446 of the Income Tax Act 2025 governs non-compliance. The levy is 0.5% of total turnover or gross receipts, subject to a maximum of ₹1,50,000. Notably, the Act classifies this as a "fee" rather than a "penalty" — the practical effect is the same, but the classification may have implications for deductibility in certain cases. The amounts and caps are identical to the old Section 271B levy.