New Delhi: As the income tax season progresses, the final filing deadline for a specific category of taxpayers is fast approaching. The Income Tax Department has mandated that businesses, independent professionals, and corporate entities whose accounts require a mandatory tax audit must file their Income Tax Returns (ITR) for the Assessment Year (AY) 2026-27 by October 31, 2026.
While salaried individuals, students, and pensioners had until July 31 to file their returns, the deadline for small business owners and freelancers operating without a tax audit ended on August 31. According to official data from the tax department, over 7.8 crore taxpayers had successfully filed their returns by the August cut-off. Now, the regulatory focus shifts to larger enterprises.
Who Needs To File By October 31? Under Section 44AB of the Income Tax Act, the October 31 deadline specifically applies to businesses and professionals whose annual income or gross receipts cross a certain financial threshold, thereby necessitating a formal tax audit by a Chartered Accountant. Additionally, working partners of firms whose accounts are undergoing an audit are also required to file their personal returns by this date.
Understanding The Tax Audit Limits For independent professionals, a tax audit becomes mandatory if their gross receipts exceed ₹50 lakh in a single financial year. For trading businesses, the standard threshold for a mandatory audit is a turnover of ₹1 crore.
However, the government provides a significant compliance relaxation to promote the digital economy. If a business conducts at least 95 per cent of its transactions—both receipts and payments—via banking channels or digital modes, the audit threshold is extended to a turnover of ₹10 crore. Furthermore, taxpayers who have opted out of the presumptive taxation scheme, or those declaring an income lower than the prescribed statutory limits, will also fall under the mandatory tax audit bracket.
Financial experts urge eligible taxpayers to ensure that their tax audit reports, specifically Form 3CA and Form 3CB, are electronically submitted at least one month prior to the ITR filing deadline. Missing this crucial deadline could invite a late fee penalty of up to ₹5,000 under Section 234F, penal interest on outstanding dues, and the forfeiture of the right to carry forward business losses to subsequent financial years.