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Tax audit report: Form 26 under the 2025 Act, Forms 3CA/3CB/3CD for FY 2025-26

The tax audit report moves to Form 26 from tax year 2026-27. For FY 2025-26, Forms 3CA/3CB/3CD were due 21 October 2026 after extension.

By Refogo Editorial TeamUpdated 4 min read4 sources cited

Short answer

A tax audit report is a chartered accountant's report on a business's accounts and tax particulars, required when turnover crosses ₹1 crore (₹10 crore if cash transactions are within 5%) or professional receipts exceed ₹50 lakh. For FY 2025-26 it is filed in Forms 3CA/3CB and 3CD, extended to 21 October 2026. From tax year 2026-27 it becomes a single Form 26 under section 63.

Due date
21 Oct 2026 for FY 2025-26 (extended from 30 Sep)
Who files
Chartered accountant, accepted by the taxpayer
Threshold
₹1 crore turnover; ₹10 crore if cash ≤5%; ₹50 lakh for professionals
Form
3CA/3CB + 3CD (FY 2025-26); Form 26 (tax year 2026-27 on)
Penalty / fee
0.5% of turnover up to ₹1.5 lakh (old); ₹75,000 or ₹1.5 lakh fee (new)
Portal
incometax.gov.in
Law
Sec. 44AB, 1961 Act; sec. 63, 2025 Act

Who needs a tax audit?

A business needs a tax audit when its turnover or gross receipts exceed ₹1 crore in the year. The limit rises to ₹10 crore where cash receipts and cash payments are each no more than 5% of the total. A professional needs one when gross receipts exceed ₹50 lakh. Taxpayers who opt out of presumptive taxation or declare profits below the presumptive rate, with income above the basic exemption limit, can also be covered.

The audit is done by a practising chartered accountant, who uploads the report on the e-filing portal. The taxpayer must then accept it from its own login. Only after acceptance is the report treated as filed.

Old forms and the new Form 26

For FY 2025-26, assessed under the 1961 Act, the report is Form 3CA where accounts are already audited under another law, such as a company, or Form 3CB otherwise, with the statement of particulars in Form 3CD. From tax year 2026-27, the Income-tax Rules 2026 replace all three with a single Form 26 under section 63 of the Income-tax Act 2025.

Form 26 is organised in parts rather than the 44 clauses of Form 3CD. Commentaries describe new sections on digital transaction percentages, GST and TDS filing status, and virtual digital assets, with TDS references moved to the consolidated section 393. The first Form 26 reports will be filed in 2027.

YearFormDue date
FY 2025-26 (AY 2026-27)3CA or 3CB, with 3CD21 October 2026 (extended)
Tax year 2026-27 onwardsForm 26As prescribed; normally one month before the return due date

Penalty becomes a fixed fee

Under the 1961 Act, failing to get accounts audited or furnish the report attracts a penalty under section 271B of 0.5% of turnover or gross receipts, capped at ₹1.5 lakh, which can be waived for reasonable cause. This applies to FY 2025-26 reports.

The Finance Act 2026 replaced the penalty under the new Act with a fee in section 428. From tax year 2026-27, a report furnished up to one month late attracts ₹75,000, and beyond one month ₹1,50,000. Because it is a fee rather than a penalty, a one-day delay costs the full ₹75,000 and there is no reasonable-cause defence.

What data does the auditor need?

A tax audit covers far more than the profit and loss account, and the auditor reports on compliance with many other provisions. Expect requests for the following, and keep them organised before the audit starts.

  • Books of account, fixed asset register and depreciation workings
  • TDS and TCS compliance details, including returns filed and any short deduction
  • GST returns and reconciliation of turnover
  • Payments to related parties and cash payments above the permitted limits
  • Loans and deposits accepted or repaid in cash, and MSME payables beyond the agreed period
  • Quantitative details of stock for manufacturers and traders

Common errors and consequences

Common issues include accepting the report after the due date, reporting figures that do not match the return, missing disallowances for late payment to MSMEs or unpaid statutory dues, and inconsistent GST turnover. Officers use audit report data for automated adjustments when processing the return, so any inconsistency tends to surface as a demand.

Plan the audit early: the report must be filed and accepted before the return. Refogo's partner professionals, who are practising chartered accountants, can carry out tax audits for a fixed fee.

Step by step

  1. 1Check applicability

    Compare turnover, cash share and receipts with the section 44AB or section 63 limits.

  2. 2Appoint a chartered accountant

    Engage a CA and add them on the e-filing portal for the audit form.

  3. 3Provide records

    Share books, registers, GST and TDS data and supporting documents.

  4. 4CA uploads the report

    The CA files Forms 3CA/3CB-3CD for FY 2025-26, or Form 26 from tax year 2026-27.

  5. 5Accept on the portal

    Accept the report from your login before the due date so it counts as filed.

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Sources

Written by the Refogo Editorial Team from the official sources above and checked on 2026-10-31. Laws, rates and due dates change, and authorities often extend deadlines, so confirm your own case with a qualified professional. This is general information, not legal or tax advice. Read our editorial policy or report an error to support@refogo.com.

Common questions

What replaced Form 3CD?

Under the Income-tax Rules 2026, Forms 3CA, 3CB and 3CD are replaced by a single Form 26 for tax year 2026-27 onwards.

Which form do I use for FY 2025-26?

Forms 3CA or 3CB with 3CD, because FY 2025-26 is still governed by the 1961 Act.

What is the late fee for Form 26?

₹75,000 for a delay of up to one month and ₹1,50,000 beyond, under section 428 as amended by the Finance Act 2026.

Is the report filed when the CA uploads it?

No. The taxpayer must accept the report on the portal for it to be treated as filed.