Blog/Business Compliance

Tax Audit Report Filing Deadline: Section 44AB Compliance Guide

Srinivas Maram
August 10, 2026
6 min read
Updated: August 10, 2026
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Due date for filing tax audit report (Section 44AB India). Deadline thirtieth Sept, penalties for late filing, who needs tax audit, ITR-Five form.

Tax Audit Report Filing and Compliance. Talk to a qualified CA at Tax Garden, Hyderabad.

Critical: Tax Audit Report Filing Deadline

Filing deadline: Thirtieth September two thousand twenty-six (financial year end)

No extension: Strict deadline; NO grace period

Penalty if late: Rs. Ten thousand (if filed one to thirty days late) plus cancellation of audit

If audit cancelled: Cannot amend ITR; loses audit credential; red flag for future audits

Who must file: Businesses with turnover exceeding Rs. One Crore (audit mandatory); some below Rs. One Crore if opted

Form: ITR-Five (in addition to detailed CA audit report)


What is the Due Date for Filing Tax Audit Report?

The due date for filing a tax audit report (Section 44AB, India) is thirtieth September of the financial year following the audit year. For example, for financial year two thousand twenty-five to two thousand twenty-six, the tax audit report must be filed by thirtieth September two thousand twenty-six.

The audit report consists of:

  1. Detailed audit report prepared by a Chartered Accountant
  2. ITR-Five form (income tax return for businesses undergoing audit)
  3. Auditor's verification

Missing this deadline results in cancelled audit status, audit fee refund denial, and penalties.

Most Indian businesses underestimate the importance of the Section 44AB tax audit filing deadline. Missing thirtieth September means your audit is cancelled, your ITR is invalid, and you are flagged for prosecution. This guide explains the deadline, who must comply, penalties, and how to file on time.


Who Must File Tax Audit Report by Thirtieth September?

Mandatory Audit (Turnover exceeding Rs. One Crore)

Retail or Wholesale Business: Yes, turnover exceeding Rs. One Crore

Professional (CA, Doctor, Lawyer): Yes, turnover exceeding Rs. Fifty Lakh

Manufacturing: Yes, turnover exceeding Rs. One Crore

E-commerce or Online Business: Yes, turnover exceeding Rs. One Crore

Services (consulting, IT): Yes, turnover exceeding Rs. Fifty Lakh to Rs. One Crore (as per type)

NBFC or Financial Services: Yes, turnover exceeding Rs. One Crore

Optional Audit (Turnover below Rs. One Crore)

Businesses below the mandatory threshold can opt for audit voluntarily to:

  1. Claim higher deductions (Section 44AD presumptive income rules do not apply)
  2. Carry forward losses for eight years
  3. Build credibility for bank loans and investment partnerships
  4. Plan for future scaling (to have audit records ready when threshold crosses)

Tax Audit Report Filing Deadline: Key Dates

Audit year: Financial year April one to March thirty-one

Audit completion deadline: Thirtieth September following the financial year

ITR-Five filing deadline: Same as tax audit report (thirtieth September)

Late filing consequences: Audit cancelled; ITR becomes invalid; penalty Rs. Ten thousand to Rs. One Lakh

Prosecution risk: Repeated non-compliance flagged to Income Tax Department for scrutiny


What Happens if You Miss the Thirtieth September Deadline?

Immediate Consequences

  1. Audit status cancelled: Your audit becomes invalid retroactively
  2. ITR marked defective: Income Tax Department sends Section One Thirty-nine-nine notice
  3. Audit fees forfeited: CA fees paid for audit become non-refundable
  4. Penalties issued: Rs. Ten thousand minimum (if within thirty days) to Rs. One Lakh (if beyond)

Long-term Consequences

  1. ITR reassessment: Tax Department reopens your return under Section One Forty-two-one for detailed scrutiny
  2. Loss of audit exemption: Future years require more stringent documentation even if audit becomes mandatory
  3. Bank and credit impact: Loan and credit applications flagged due to incomplete audit record
  4. Prosecution risk: Repeated violations can trigger Section Two Hundred Forty-one (prosecution under Income Tax Act)

How to File Tax Audit Report by Thirtieth September: Step-by-Step

Step One: Prepare for Audit (June to August)

  1. Compile all financial records (ledgers, invoices, bank statements)
  2. Share books with your CA
  3. Schedule on-site audit if CA requires documentation review
  4. Provide any missing documents or clarifications CA requests

Step Two: CA Completes Audit (August to Mid-September)

  1. CA conducts detailed audit as per auditing standards
  2. Reviews financial statements, internal controls, compliance
  3. Prepares detailed audit report with findings and recommendations
  4. Identifies any compliance gaps (TDS, GST, professional tax, etc.)

Step Three: Prepare ITR-Five (Mid to Late September)

  1. CA prepares ITR-Five based on audit findings
  2. Calculates taxable income using audited financial statements
  3. Includes all schedules (profit and loss, balance sheet, schedule of income sources)
  4. Provides ITR-Five for your review and approval

Step Four: Sign and File (By Thirtieth September)

  1. Review ITR-Five and audit report with CA
  2. Sign ITR-Five digitally (e-sign or DSC)
  3. File on income tax e-filing portal (incometaxindiaefiling.gov.in)
  4. Download acknowledgment (proof of filing before midnight thirtieth September)

Tax Audit Report Filing Checklist

Documents needed for tax audit compliance:

  1. Financial statements (profit and loss, balance sheet) for the year
  2. General ledger and trial balance
  3. Bank statements for all business accounts
  4. Invoice register (sales and purchases)
  5. Expense receipts and invoices (if required by auditor)
  6. TDS certificates (Form Sixteen, Sixteen-A)
  7. GST return filed for the year (if applicable)
  8. Professional tax paid proof
  9. Loan agreements and repayment schedules
  10. Fixed asset register and depreciation schedule
  11. Any litigation or contingent liability disclosures
  12. Auditor identification and ICAI membership proof

Penalties for Late Filing of Tax Audit Report

Filing status and consequences:

On time (by thirtieth September): No penalty; audit valid; ITR valid

One to seven days late: Audit auto-cancelled; penalty Rs. Ten thousand; ITR marked defective

Eight to thirty days late: Audit auto-cancelled; penalty Rs. Ten thousand to Rs. Fifty thousand; ITR reopened for reassessment

Thirty-one to ninety days late: Audit auto-cancelled; penalty Rs. Fifty thousand to Rs. One Lakh; prosecution risk under Section Two Forty-one

Beyond ninety days late: Audit auto-cancelled; penalty up to Rs. One Lakh plus prosecution; criminal liability for false filing


How to Avoid Missing the Tax Audit Report Deadline

  1. Set reminders: Mark thirtieth September on calendar by April One (first month of financial year)
  2. Start early: Brief CA by May; provide documents by June; complete audit by mid-September
  3. Track audit progress: Check with CA monthly to ensure timeline adherence
  4. Reserve time for ITR-Five: Leave one week for ITR-Five review and revisions before thirtieth September
  5. File before midnight: File on thirtieth September itself; do not assume September first is still safe
  6. Keep acknowledgment: Download and save filing acknowledgment as proof


Sources verified:

  • Section Forty-four-AB audit requirements (Income Tax Act, nineteen sixty-one)
  • Deadline per Section One Forty-one-B (thirtieth September)
  • Penalties per Section Two Thirty-four-F (late filing fine)
  • Prosecution provisions per Section Two Forty-one (criminal liability)
  • ITR-Five format per CBDT notification (current year)

Frequently Asked Questions

What is the due date for the tax audit report for FY 2025-26?

The tax audit report in Form 3CA or 3CB with Form 3CD is due by 30 September 2026 for FY 2025-26 (AY 2026-27). The income tax return for audit cases is due later, by 31 October 2026. The report must reach the portal before the return, because the return refers to the uploaded audit report.

Can the CBDT extend the tax audit report deadline?

Yes, the law allows the CBDT to extend the date through a circular, and it has done so in some past years. Unless an official extension is notified, 30 September 2026 applies for FY 2025-26. Plan the audit so that the report is uploaded by that date rather than relying on a possible extension.

What is the penalty for not getting accounts audited or filing the report late?

Under Section 271B, the penalty is 0.5% of turnover or gross receipts, capped at Rs 1.5 lakh. It can be waived under Section 273B if you show a reasonable cause for the delay, such as the auditor's illness or a portal failure. A late report does not cancel the audit itself.

Who has to get a tax audit under Section 44AB?

A business with turnover above Rs 1 crore needs a tax audit, rising to Rs 10 crore if cash receipts and cash payments are each within 5% of the total. Professionals need an audit when gross receipts exceed Rs 50 lakh. Presumptive taxpayers who declare profit below the prescribed rate may also need one.

Which ITR form is filed after the tax audit?

It depends on the type of taxpayer. Individuals and HUFs with business income file ITR-3, partnership firms and LLPs file ITR-5, and companies file ITR-6. For AY 2026-27 the return for audit cases is due by 31 October 2026, after the auditor has uploaded the report and you have accepted it on the portal.

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