Carry forward of loss and section 263 revision depend on the pre-amendment return filing rules and error-prejudice test.

A loss return filed within the statutory period then available under section 139(4), though beyond section 139(1), supported determination and carry forward of loss under the unamended scheme before the 1 April 1989 amendment to section 80 took effect. The assessee's right was not defeated merely because the return was not filed within section 139(1), as the governing law at the relevant time still permitted the claim. Revisional jurisdiction under section 263 could not be invoked unless the assessment order was both erroneous and prejudicial to the interests of the Revenue, so a mere difference of view on carry forward was insufficient.

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Issues: (i) Whether the Commissioner could invoke revisional jurisdiction under section 263 of the Income-tax Act, 1961 to set aside the assessment on the ground that the assessee was not entitled to carry forward losses; (ii) Whether the assessee was entitled to carry forward losses despite the amendment to section 80 of the Income-tax Act, 1961, where the return was filed beyond the time under section 139(1) but within the period then permitted by section 139(4).

Issue (i): Whether the Commissioner could invoke revisional jurisdiction under section 263 of the Income-tax Act, 1961 to set aside the assessment on the ground that the assessee was not entitled to carry forward losses.

Analysis: The revisional power under section 263 can be exercised only where the assessment order is both erroneous and prejudicial to the interests of the Revenue. Since the carry forward claim depended upon the legal effect of the return filed and the governing provisions then in force, the assessment could not be branded as erroneous merely because the Commissioner preferred a different view on the carry forward question.

Conclusion: The invocation of section 263 was not justified and the Tribunal was right in cancelling the revisional order.

Issue (ii): Whether the assessee was entitled to carry forward losses despite the amendment to section 80 of the Income-tax Act, 1961, where the return was filed beyond the time under section 139(1) but within the period then permitted by section 139(4).

Analysis: The governing law at the relevant time permitted a return to be filed within the period under section 139(4), and the Supreme Court decision on the earlier provision was treated as applicable until the subsequent amendment brought into force with effect from 1 April 1989. As the return had been filed before the assessment was completed and before the amendment became operative, the assessee's right to have the loss determined and carried forward remained available under the unamended scheme.

Conclusion: The assessee was entitled to carry forward the losses.

Final Conclusion: The reference was answered in favour of the assessee on both questions, upholding the Tribunal's view and rejecting the Revenue's challenge to the carry forward of loss and to the revisional order.

Ratio Decidendi: For the relevant pre-amendment period, a loss return filed within the statutory window then available under section 139(4) could support determination and carry forward of loss, and an order cannot be revised under section 263 unless it is both erroneous and prejudicial to the interests of the Revenue.

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