A tax audit isn’t optional paperwork once your turnover crosses the threshold under Section 44AB, it’s a Chartered Accountant formally verifying your books before you file. Skip it, or get it wrong, and the fee that follows costs more than doing it properly would have.
Section 44AB of the Income Tax Act requires certain businesses and professionals to have their accounts examined by a practising Chartered Accountant before filing their income tax return. The CA checks that income, expenses, and deductions are recorded correctly, that TDS obligations have actually been met, and that cash transactions stay within the limits the law sets. The findings go into an audit report, filed electronically along with a detailed statement of particulars covering dozens of specific disclosure points. This isn’t a choice once you’re over the threshold. It’s mandatory, and the return itself can’t really be filed properly without it.
The tax audit report must be filed by 30 September of the assessment year, ahead of the income-tax return. Failure to get the audit done or file the report on time attracts a penalty under Section 271B of 0.5% of turnover or gross receipts, up to a maximum of ₹1,50,000. We complete your audit well within the deadline so you stay compliant and penalty-free. A tax audit is separate from a statutory audit under the Companies Act — many businesses need both, and we handle them together.
The trigger is turnover, and it works differently depending on whether you’re running a business or a profession.
For a business, the standard threshold is turnover above ₹1 crore in the financial year. That limit stretches to ₹10 crore if cash receipts and cash payments each stay under 5% of their respective totals, essentially rewarding businesses that run almost entirely through banking channels. Cross 5% on either side, cash coming in or cash going out, and you’re back to the ₹1 crore threshold for that year.
Professionals don’t get that stretch. Doctors, lawyers, architects, consultants, anyone practising a profession rather than running a business, need a tax audit once gross receipts pass ₹50 lakh, regardless of how digital their transactions are.
There’s a third trigger too, tied to presumptive taxation. If you’ve been declaring income under Section 44AD and decide to report profit below the prescribed rate, and your total income exceeds the basic exemption limit, a tax audit becomes mandatory even if your turnover sits below the usual threshold.
Which form you file depends on whether your accounts are already being audited under some other law. If they are, say, under the Companies Act, you file Form 3CA. If nothing else already requires an audit, proprietorships and partnership firms typically fall here, it’s Form 3CB instead. Either way, Form 3CD gets attached alongside it: a long, detailed statement covering everything from loan and deposit disclosures to TDS compliance to disallowed expenses. This is genuinely the bulk of the actual audit work. The 3CA or 3CB cover page is short. Form 3CD is where a CA actually has to go through the books.
The tax audit report is due by September 30 following the end of the financial year, though the CBDT has pushed this date back in some years when circumstances warranted it. The income tax return itself is due the same day for anyone required to get a tax audit done, rather than the July 31 deadline that applies to non-audit taxpayers.
Miss the deadline, and Section 271B kicks in: a fee tied to a percentage of your turnover, capped at a fixed amount. Recent changes to how the law treats this have shifted it from being classified as a penalty to a fee, specifically to cut down on the litigation that used to follow. That’s a welcome change, but it doesn’t make missing the deadline free.
Worth knowing if you’re not already tracking this: the Income Tax Act, 1961 has been replaced by the Income Tax Act, 2025, effective from April 1, 2026. Section 44AB itself gets renumbered as Section 63 under the new Act. None of this changes anything for the tax audit you need done right now though. FY 2025-26 income is still governed entirely by the old Act and the old Section 44AB, since the new Act only applies going forward from Tax Year 2026-27. It’s genuinely useful to know the new number is coming, so nothing looks unfamiliar once the transition actually reaches your filings.
A tax audit done properly isn’t just a compliance checkbox, it’s also where a good CA catches disallowances, TDS gaps, and cash-transaction issues before the tax department does. We go through Form 3CD clause by clause rather than treating it as a formality, and we track exactly where your turnover sits relative to both the standard and enhanced thresholds, so you’re never caught off guard by a limit you didn’t know applied to you.
Our Strength Lies in Providing Real-World Practical Solutions
We plan every statutory audit around your AGM and ROC deadlines, so Form AOC-4 and MGT-7 are always filed on time. Our team works to a clear schedule and keeps you updated at each stage, so you never miss a statutory due date.
You get a thorough, Standards-compliant audit at transparent, competitive fees with no surprises. Because we deliver statutory audit, tax audit and ROC filing together, you save on duplicated effort and overall cost.
Our experienced team of Chartered Accountants, Company Secretaries and consultants handles the full compliance chain under one roof — statutory audit, tax audit, GST audit, internal financial controls and annual ROC filings — so everything stays coordinated and consistent.
AVS & Associates is a peer-reviewed CA firm founded by CA Vishnu Agrawal, with 25+ years of experience and five partners. We maintain the highest ethical and professional standards on every engagement, with complete client confidentiality.