Income Tax Return Filing Deadline: The extension has been granted to taxpayers falling under clause (aa) of Explanation 2 to sub-section (1) of Section 139, pushing the deadline to 15th December 2024. Income Tax Return Filing Deadline: The extension has been granted to taxpayers falling under clause (aa) of Explanation 2 to sub-section (1) of Section 139, pushing the deadline to 15th December 2024. Zee News :Business