This guide is general information. If you would rather a chartered accountant handled it, see Tax Audit (Section 44AB).
A tax audit is an audit of your accounts by a chartered accountant under the Income-tax Act. Whether it applies depends on your type of income and the amounts involved.
Limits
| Who | Tax audit applies if |
|---|---|
| Business | Turnover exceeds ₹1 crore, or ₹10 crore if cash receipts and cash payments are each within 5% of the total, subject to conditions |
| Profession | Gross receipts exceed ₹50 lakh |
| Presumptive business (Section 44AD) | You opt out of the scheme and your income is below the presumptive level, in specified cases |
| Presumptive profession (Section 44ADA) | Income is below the presumptive level and total income exceeds the basic exemption limit, in specified cases |
F&O and trading
Turnover for futures and options is computed under special rules. Many traders with losses need an audit even when the turnover looks small. Check with a professional.
Due dates
- Tax audit report: 30 September of the assessment year
- ITR for audit cases: 31 October of the assessment year
Penalty
Not getting accounts audited when required can attract a penalty of 0.5% of turnover or receipts, subject to a maximum of ₹1.5 lakh, unless there is a reasonable cause.
Tip
Check applicability early in the year. Cash transaction patterns decide which limit applies, so plan payments through banking channels.
Worked examples
- A trader has a turnover of ₹1.5 crore. Cash receipts and payments are more than 5% of the total. Tax audit applies, because the ₹1 crore limit applies.
- The same trader keeps cash receipts and payments within 5% of the totals. Under the higher limit, audit applies only above ₹10 crore, so no audit is needed on these facts.
- A doctor has gross receipts of ₹60 lakh. The professional limit of ₹50 lakh is crossed, so tax audit applies unless presumptive taxation under Section 44ADA is available and used.
- A small shop declares presumptive income under Section 44AD but later opts out of the scheme and declares less than the presumptive profit. Books and an audit may be needed.
What the auditor checks
The auditor reports on a long list of items in Form 3CD. These include how the books are maintained, depreciation, loans and deposits taken, payments in cash above limits, tax deducted at source, payments to related parties, and turnover reconciled with the GST returns. Where the answers show non-compliance, the auditor is required to report them, and the department may disallow the related expenses.
What it costs to skip it
Apart from the penalty of 0.5% of turnover up to ₹1.5 lakh, the real cost is often a re-assessment. An unaudited return in a case where audit was required may be treated as defective or lead to a notice. If you realise the audit was missed, speak to a CA quickly, because the position can be fixed more easily soon after the due date than years later.
Timeline for a smooth tax audit
- April to June: close the previous year's books and reconcile bank, GST and TDS.
- July to August: share the trial balance, ledgers and supporting records with the auditor.
- August to September: resolve queries and finalise the report before 30 September.
- October: file the income tax return by 31 October, for audit cases, with the report uploaded.
Records the auditor will ask for
Expect a request for bank statements, loan confirmations, a fixed asset register, stock records, sales and purchase registers, GST returns, TDS returns and challans, payroll records, and details of related-party transactions. Expect questions about cash payments above the limit, loans accepted or repaid otherwise than by account-payee modes, and expenses that need TDS. Having these ready saves days.
Connection with the income tax return
The figures in the audit report must agree with the return. Mismatches can lead to notices. Do not file the return until the audit report is final, and make sure any changes made during the audit are reflected in the return.
Official sources
Section 44AB of the Income-tax Act and the rules for Forms 3CA, 3CB and 3CD set out who needs an audit and what the report contains. The limits have been revised from time to time, especially the higher limit that depends on cash transactions. Check the current limits before you decide that an audit does not apply to you.
Frequently asked questions
Does tax audit apply if I made a loss?
It can. Several rules are triggered by turnover or by declaring a profit below the presumptive rate, regardless of whether the business made a loss in the year.
What is the audit limit if I take most payments by cheque?
A higher limit of ₹10 crore applies where cash receipts and cash payments are each within 5% of the total, subject to the conditions of the law. Otherwise the ₹1 crore limit applies.
Can I switch between presumptive taxation and regular books?
You can, but the law restricts switching back for some period after you opt out. Decide with advice, since it affects both audit and tax cost.
Who can sign a tax audit report?
Only a practising chartered accountant. They must be independent, and must also meet the eligibility conditions of the professional rules.
This content is for general information and does not constitute professional advice. Laws, rates and due dates change; confirm the current position for your case. Section references are to the Income-tax Act, 1961 unless stated; the Income-tax Act, 2025 applies to later periods with renumbered sections.