Tax audit under Section 44AB of the Income Tax Act is a mandatory statutory requirement for businesses and professionals crossing prescribed turnover or receipt thresholds. Missing this requirement carries steep penalties — yet many taxpayers remain unclear on whether it applies to them. Let's break it down clearly.
Who Must Get a Tax Audit Done?
| Category | Condition |
|---|---|
| Business (general) | Total sales, turnover, or gross receipts exceed ₹1 crore in the financial year |
| Business (cash transactions < 5%) | Turnover exceeds ₹10 crore — where cash receipts and payments are each less than 5% of the total |
| Professionals | Gross receipts exceed ₹50 lakh in the financial year |
| Presumptive scheme optees (44AD/44ADA/44AE) | Profit declared is lower than the deemed profit under the applicable section |
| Losses in presumptive scheme | Opted for presumptive scheme in a prior year and now declaring a loss or below-minimum profit |
Which Forms Are Used?
- Form 3CA + Form 3CD: When the taxpayer is already required to get their accounts audited under any other law (e.g., Companies Act). The CA certifies accounts are maintained as required.
- Form 3CB + Form 3CD: When no other audit is mandated. The CA prepares and certifies the accounts.
- Form 3CD: The detailed statement of particulars required in all cases — it covers depreciation, deductions, loans, payments to related parties, TDS compliance, and dozens of other reporting items.
When Is the Tax Audit Report Due?
The audit report must be filed on or before 30th September of the assessment year (one month before the ITR deadline for audit cases, which is 31st October). The CA uploads the report directly on the IT portal, and the taxpayer then accepts it before filing their ITR.
Penalty for Non-Compliance
Failure to get a tax audit done — or not furnishing the report by the due date — attracts a penalty under Section 271B equal to 0.5% of turnover or gross receipts, subject to a maximum of ₹1.5 lakh. However, a reasonable cause defence is available if delays were genuinely beyond the taxpayer's control.
How to Prepare for a Smooth Tax Audit
- Maintain complete books of account — cash book, journal, ledger, and supporting vouchers.
- Ensure all bank statements, GST returns, and TDS filings are reconciled with the books.
- Engage your CA early — ideally before the end of the financial year, not after.
- Keep all expense vouchers, loan documentation, and asset purchase records readily available.
- Respond promptly to CA queries during the audit process to avoid last-minute delays.
Tax audit is not just a compliance checkbox — a well-conducted audit often surfaces errors in TDS, GST, or deductions that, if uncorrected, become far more expensive issues later.