This season’s dates
For FY 2025-26 (AY 2026-27): the tax audit report is due 30 September 2026 and the return in audit cases 31 October 2026. Businesses and professionals not liable to audit, filing ITR-3 or ITR-4, have until 31 August 2026 — a permanent change made by the Finance Act 2026 to Section 139(1), replacing the general 31 July date for that category. Which date applies turns on audit liability under Section 44AB, not on the form number. The audit season guide sets out the full calendar, the Section 271B penalty and the records to have ready.
Statutory audit (companies and LLPs)
Under the Companies Act, every company must have its financial statements audited each year by an independent Chartered Accountant — regardless of turnover or profit. LLPs require a statutory audit once turnover or contribution crosses the prescribed thresholds. The audit examines the books, tests whether the financial statements give a true and fair view, and results in the auditor’s report and the filings that follow. Records typically involved: ledgers and trial balance, bank statements, purchase and sales records, fixed-asset and statutory registers, and the prior year’s financials.
When is a tax audit required under Section 44AB?
A tax audit under Section 44AB applies in defined situations, principally:
- Business: where total turnover or gross receipts exceed ₹1 crore in the financial year. This threshold is raised to ₹10 crore where cash receipts and cash payments are each 5% or less of the total — so a largely digital business stays outside audit up to the higher limit.
- Profession: where gross receipts exceed ₹50 lakh in the financial year — a flat limit. The digital-receipts relaxation that raises the business threshold does not apply to the professional audit limit.
- Presumptive cases: where a taxpayer who would otherwise use a presumptive scheme (Sections 44AD/44ADA) declares income lower than the presumptive rate and exceeds the basic exemption limit, an audit may be triggered.
Whether an audit applies to your specific situation depends on your turnover, receipts, cash proportion, and presumptive position — assessed before any engagement. The audit report (Form 3CA/3CB and 3CD) is due one month before the ITR due date — generally 30 September 2026 for cases whose ITR due date is 31 October 2026. It focuses on the particulars Form 3CD requires — TDS compliance, disallowed payments, loans and deposits, and the like.
Internal audit
Internal audit is a periodic review of a business’s own processes and controls — purchases, payments, inventory, revenue recognition — to surface gaps, leakages and compliance risks before they become problems. It is mandatory for certain classes of companies and optional, but often useful, for others. The scope is agreed with management at the outset.
Stock and management audit
Stock audit — verification of physical inventory against the records — is commonly required by banks for working-capital limits, and by businesses wanting an independent count. Management audit is a broader review of operational efficiency and controls. Both are scoped to the specific question being asked. Where the same facility also requires CMA data or a project report for the bank, the two are prepared together so the stock figures agree.
Internal financial controls and IT systems
Where the company crosses the thresholds in Section 143(3)(i), the statutory auditor must also report on internal financial controls with reference to the financial statements — and where the accounting runs on a system, that means examining the controls around the system itself. Documentation, testing and IT general controls review are covered separately under internal financial controls and IS audit.
How engagements are accepted
Audit work carries independence and eligibility requirements; an engagement is accepted only where those are met for the entity concerned. The scope, timeline and fee are set out before work begins.