ITR Filing 2025 Last Date, Due Date Extension Live News Update: The Income Tax (IT) department has extended the deadline for filing of IT returns by one more day following glitches and server time-out issues faced by the taxpayers on e-filing portal. The original deadline of July 31 had previously been extended to September 15 and now again to September 16, making today the last date for filing returns. A day's window has come as a huge relief for the taxpayers as they complained of facing server issues and demanded for an extension of the due date. Even as the IT department initially maintained that portal was working fine, they announced the extension of the deadline on Monday. How many ITRs filed so far? On Saturday, Income Tax department said that more than six crore income tax returns for Assessment Year 2025-26 have been filed. Over the years, the ITR filings have shown consistent growth, reflecting rising compliance and the widening of the tax base.