Section 121 Income Tax Act 2025 Submission of return for losses. By CA Satbir Singh | March 31, 2026 0 Comment Last Updated on: April 1, 2026Section 121 Income Tax Act 2025Submission of return for losses.121. Irrespective of anything contained in this Chapter, no loss which has not been determined in pursuance of a return filed under section 263(1), shall be carried forward and set off under section 111(1) or 112(1) or 113(2) or 114(2) or 115(2).