Missed August 31 ITR deadline? Know what ITR 3 and ITR 4 filers can do now

ITR deadline: By the end of August 31, 2026, over 7.8 crore individuals completed their income tax return submissions. Those who did not file on time have until December 31, 2026, to submit a belated ITR, incurring possible late fees. Notably, failing to meet this deadline also prevents taxpayers from opting out of the new tax regime, with business income earners unable to revert to the old regime post-deadline.