Income Tax Audit Report Due Date — AY 2026-27 and After

Income Tax Audit Report explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.

The income tax audit report due date for AY 2026-27 is 30 September 2026 — Form 3CA or Form 3CB with Form 3CD, under rule 6G. Where a section 92E report is also due, it is 31 October 2026. From tax year 2026-27 the report becomes Form No. 26 under rule 47 of the Income-tax Rules, 2026.

The date, and the report it applies to

The income tax audit report due date is the statute's specified date: one month prior to the due date for furnishing the return under section 139(1), per clause (ii) of the Explanation to section 44AB. For an assessee whose accounts require audit, the return date is 31 October, so the report date is 30 September.

What is actually being furnished

Under rule 6G the deliverable is a pair, and both halves must be there by the income tax audit report due date.

• Form 3CA — the audit report where the person is required by some law other than the Income-tax Act to get the accounts audited. A company audited under the Companies Act, 2013, or a co-operative society audited under its State Act, falls here.
• Form 3CB — the audit report in any other case, typically a firm or proprietorship with no statutory audit obligation outside the income-tax law.
• Form 3CD — the statement of particulars, annexed to whichever of 3CA or 3CB applies.

The workflow that has to finish by the date

Paragraph 7.3 of the ICAI Guidance Note sets out the sequence, and it matters because responsibility alternates between assessee and auditor.

1. The assessee assigns Form 3CA or 3CB to the chartered accountant — every year, not once.
2. The assessee fills the Form 3CD particulars.
3. The chartered accountant accepts and uploads 3CA or 3CB with 3CD, using a DSC, with the audited financial statements attached.
4. Disagreement with any particular filled by the assessee is recorded as an observation or qualification in Para 3 of Form 3CA or Para 5 of Form 3CB.
5. The assessee accepts from the e-filing worklist. Furnishing is complete only then.

Step 4 is the auditor's protection and is worth stating plainly. Form 3CD is filled by the assessee. Where the auditor disagrees with a figure or a disclosure, the correct response is neither to refuse to upload nor to upload silently — it is to qualify. That entry is what separates a reported particular from a certified one.

Paragraph 7.4 records a useful change on the acceptance side: individual and HUF taxpayer logins may now verify Form 3CB-3CD using EVC or DSC, where previously only a DSC was accepted. Chartered accountants must continue to use a DSC.

Revising a report that has already been furnished

Under the 1962 Rules, revision was tied to a payment affecting a section 40 or 43B disallowance, and the deadline was the end of the relevant assessment year. The 2026 Rules restate this. Rule 47(3) permits revision where all of the following hold:

• a report has already been furnished under rule 47(1) and (2);
• the person makes a payment after that report was furnished;
• the payment necessitates recalculation of a disallowance under section 35 or section 37 of the Income-tax Act, 2025;
• a revised report is obtained from an accountant as defined in section 515(3)(b), signed and verified; and
• it is furnished before the end of the financial year succeeding the tax year — 31 March 2028 for a report pertaining to tax year 2026-27.

What changes from tax year 2026-27

Rule 47 collapses the old pair into a single form with four Parts, so the income tax audit report due date will attach to one filing rather than two.

Rule 47(2) says the particulars "shall also be in Part C and D of Form No. 26". They are components of the same form, not a separate annexure — a filing that completes Part A or Part B and leaves Part C and Part D blank is incomplete on the face of the rule, whatever the income tax audit report due date position.

Missing the date

For AY 2026-27 the penalty is section 271B: 0.5% of total sales, turnover or gross receipts, or Rs 1,50,000, whichever is less, with the rupee figure operating as a ceiling from Rs 3 crore of turnover upward. Section 273B removes the penalty where reasonable cause is proved, with the onus on the assessee.

From tax year 2026-27 the successor is section 446 of the Income-tax Act, 2025, in the same shape — the lesser of 0.5% of turnover or gross receipts and Rs 1,50,000 — and the reasonable cause defence moves to section 470.

Checklist

• Determine the return due date for each assessee first; the income tax audit report due date follows from it.
• Flag section 92E clients separately — their date is a month later.
• Decide Form 3CA versus 3CB on the audit-obligation test, not on entity type alone.
• Attach the audited financial statements to the upload.
• Qualify rather than upload silently where you disagree with a 3CD particular.
• Obtain acceptance the same day; tell individual and HUF clients EVC is available.
• Keep post-report payments affecting disallowances on a standing review list for the revision decision.