<h1>Tax authority extends ITR filing deadline one day to Sept 16, 2025 after portal failures and heavy traffic</h1> The tax authority extended the ITR filing deadline by one day to September 16, 2025, after technical failures and heavy traffic disrupted filings on the final day. The extension preserves the penalty-free filing window for income earned in FY 2024-25 and follows an earlier extension from July 31 to September 15 granted for form and utility revisions. The e-filing portal experienced login, payment and AIS/TIS download issues despite published browser-troubleshooting steps and support email channels; a maintenance window was scheduled from 00:00-02:30 on September 16 to implement utility changes.