Deadline Passed, But Window Remains Open

August 31 was the income tax return (ITR) filing deadline for eligible non-audit taxpayers for assessment year 2026-27, as reported by Free Press Journal and Lokmat Times. Taxpayers who missed this date have not permanently lost the chance to file; the Income Tax Department permits filing a belated return under Section 139(4). For this assessment year, the belated return can be submitted by December 31, 2026, or before completion of the assessment, whichever is earlier.

However, late filing carries consequences. Taxpayers may face a late-filing fee under Section 234F: ₹1,000 for those with total income not exceeding ₹5 lakh, and ₹5,000 in other cases. Interest may also be charged on any outstanding tax liability.

Who Had to File by August 31?

The deadline applied to eligible taxpayers in the non-audit category, including certain individuals with business or professional income. ITR-3 is for individuals and Hindu Undivided Families (HUFs) earning profits or gains from business or profession who cannot use ITR-1, ITR-2, or ITR-4. ITR-4, also called Sugam, is available to eligible resident individuals, HUFs, and resident firms (excluding LLPs) with total income up to ₹50 lakh, where business or professional income is computed on a presumptive basis under Sections 44AD, 44ADA, or 44AE. The Income Tax Department has confirmed August 31, 2026, as the deadline for filing ITR-4 for AY 2026-27.

Implications of Late Filing

Late filing can affect the ability to carry forward certain business and capital losses. Such losses generally need to be reported in a return filed by the original due date under Section 139(1) to be eligible for carry-forward.

Additionally, taxpayers with unpaid taxes will have to pay interest at the rate of 1% per month or part of a month on the outstanding amount, as per Section 234A, as reported by Lokmat Times. Individuals with business or professional income who choose to opt out of the default new tax system and return to the old tax regime must file their returns by the due date; filing after the due date does not qualify for the old regime.

Verification Reminder

Taxpayers who filed on or before the deadline should complete verification within the permitted period. An unverified return is treated as invalid, while delayed verification can make the filing date later and trigger consequences. The department allows 30 days for completing electronic verification or submitting ITR-V, as reported by Free Press Journal.