If your tax audit report under Section 44AB is not filed on time, you face a penalty under Section 271B of 0.5% of your total sales, turnover, or gross receipts, capped at ₹1,50,000, whichever is lower.1Income Tax Department. Penalties But the monetary penalty is often the smallest part of the damage. A late audit report can drag deductions off your return, trigger a separate late-return penalty, add interest on unpaid tax, and raise your profile with the department. The penalty is also discretionary, and Section 273B gives you a full escape if you can show reasonable cause. Here is what actually happens, and what you can still do.
The Section 271B Penalty and How It’s Calculated
The penalty is 0.5% of total sales, turnover, or gross receipts for the relevant financial year. For professionals, the calculation uses gross receipts. The statute then compares that figure to ₹1,50,000 and you pay whichever is lower.1Income Tax Department. Penalties
A few worked examples show how quickly the cap kicks in:
- A business with ₹2 crore turnover: 0.5% works out to ₹1,00,000, which is below the cap, so the penalty is ₹1,00,000.
- A business with ₹50 crore turnover: 0.5% works out to ₹25,00,000, so the penalty is capped at ₹1,50,000.
- A professional with ₹60 lakh gross receipts: 0.5% works out to ₹30,000, so the penalty is ₹30,000.
One phrase in the statute matters a lot. Section 271B says the Assessing Officer “may direct” the penalty, not “shall direct.”2Income Tax Department. Income-tax Act, 1961 – Section 271B The penalty is discretionary. You should receive a show-cause notice before it is levied, and you get a chance to explain the delay before anything is imposed.
The Consequences That Usually Cost More
For a large business, ₹1,50,000 is manageable. The problems that follow a late audit report tend to add up to far more than that.
- Disallowance of deductions. Certain deductions and exemptions on your return can be disallowed if the audit report supporting them was not filed on time. That raises your taxable income and the tax you owe on it.
- Late return penalty under Section 234F. You cannot file a valid return without the audit report, so missing the audit deadline often cascades into a belated return. That carries its own penalty of up to ₹5,000 under Section 234F.
- Interest under Sections 234A, 234B, and 234C. If the late filing means tax is paid late, interest accrues on the outstanding amount and keeps compounding until you pay.
- Heightened scrutiny. A pattern of late audit filings raises your profile with the department and makes future scrutiny assessments more likely.
Between disallowed deductions and interest, the real cost of a missed deadline is almost never the Section 271B penalty on its own.
Reasonable Cause Under Section 273B
Section 273B gives you a complete defense to the Section 271B penalty if you can prove there was reasonable cause for the failure to file on time.1Income Tax Department. Penalties Since the penalty is already discretionary, this is where most taxpayers actually push back.
Situations that have been accepted as reasonable cause in tribunal and appellate decisions include serious illness of the taxpayer or their chartered accountant during the filing period, natural disasters that disrupted business records or access to filing systems, and other genuine circumstances beyond the taxpayer’s control. A bona fide belief that no audit was required, backed by professional advice, has also succeeded in some cases.
Arguments that rarely work: simple ignorance of the law, ordinary negligence, or shortage of funds to hire an auditor. If you are running a reasonable cause defense, document everything. Medical certificates, dated correspondence with your CA showing genuine attempts to comply, evidence of the specific event that stopped you from filing on time. The burden of proof is on you, so build the file before you need it.
The Deadlines You’ve Missed
The tax audit report is due one month before your income tax return. For most taxpayers who need an audit, the return deadline under Section 139(1) is October 31 of the assessment year, which puts the audit report deadline at September 30.3Income Tax Department. Income-tax Act, 1961 – Section 44AB
If you also file a transfer pricing report under Section 92E, your return due date shifts to November 30 and your audit report is due by October 31. The government occasionally extends these dates by notification, so it’s worth checking the official circulars each year before assuming the deadline has passed without relief.
What You Can Still Do After the Deadline
Missing September 30 (or your applicable deadline) does not lock you out of the system. The audit report can still be filed late, and your return can still be filed as a belated return under Section 139(4) up to December 31 of the assessment year. Filing the audit report late does not prevent you from completing your return; the Section 271B penalty simply sits alongside the return separately.
A few practical steps once you know you’ll miss or have missed the deadline:
- File the audit report as soon as possible. Every day the return sits unfiled adds interest under Sections 234A, 234B, or 234C if there is tax outstanding.
- Assemble your reasonable cause evidence now, not when the show-cause notice arrives. Medical records, CA correspondence, and any external event that caused the delay should be organized and dated.
- Respond fully to the show-cause notice when it arrives. Because the penalty is discretionary and Section 273B is available, a well-supported reply is often the difference between paying ₹1,50,000 and paying nothing.
- If you spot errors in a report you filed late, Rule 6G(3) allows a revised audit report before the end of the relevant assessment year. After that, revisions generally need direction from the Assessing Officer, so raising an error proactively during assessment is better than waiting to be found out.
Who This Applies To
Section 271B only bites if you were required to get a tax audit under Section 44AB in the first place. That covers businesses with turnover above ₹1 crore (or ₹10 crore where cash receipts and cash payments each stay within 5% of total receipts and payments), professionals with gross receipts above ₹50 lakh, and certain presumptive taxation cases where the taxpayer declares income below the prescribed percentage and total income exceeds the basic exemption limit.3Income Tax Department. Income-tax Act, 1961 – Section 44AB If none of those apply to you, Section 44AB does not, and neither does the Section 271B penalty.
One trap here: a single large cash transaction can push you past the 5% cash limit, dropping your threshold from ₹10 crore to ₹1 crore and pulling you into an audit requirement you weren’t planning for. If you’re near the boundary, check your cash flows before you assume you’re clear.