Separate tax-computation sheet and limited rectification powers under section 154 upheld; jurisdiction plea rejected for late challenge.

A valid assessment under section 143(3) may be sustained where the tax computation is set out in a separate signed sheet before limitation expires, even if it is not incorporated in the assessment order itself. Rectification under section 154 is confined to patent mistakes and cannot be used to revisit disallowances for travelling, staff welfare, or car expenses that were made on examination of the record and factual appreciation. A territorial jurisdiction objection and timeliness challenge to the notice and assessment could not be raised for the first time before the Tribunal where the statutory objection procedure was not followed.

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Issues: (i) Whether the assessment under section 143(3) of the Income-tax Act was invalid because the tax computation was not incorporated in the assessment order or separately served within limitation. (ii) Whether the Commissioner (Appeals) could rectify, under section 154 of the Income-tax Act, the disallowances relating to travelling expenses, staff welfare expenses, and car repair and petrol expenses on the ground of mistake apparent from record. (iii) Whether the assessee could raise, for the first time before the Tribunal, the additional plea challenging the Assessing Officer's territorial jurisdiction and the timeliness of the notice and assessment.

Issue (i): Whether the assessment under section 143(3) of the Income-tax Act was invalid because the tax computation was not incorporated in the assessment order or separately served within limitation.

Analysis: The assessment was made within the statutory period and the absence of a separate computation on the face of the assessment order did not, by itself, invalidate the assessment. The governing principle is that assessment is an integrated process comprising determination of total income and tax payable, and a separate sheet containing the tax calculation, duly approved and signed before limitation expires, satisfies the statutory requirement. The cited authority on this point was treated as conclusive against the assessee's objection.

Conclusion: The objection to the validity of the assessment on this ground failed and was against the assessee.

Issue (ii): Whether the Commissioner (Appeals) could rectify, under section 154 of the Income-tax Act, the disallowances relating to travelling expenses, staff welfare expenses, and car repair and petrol expenses on the ground of mistake apparent from record.

Analysis: Rectification under section 154 is confined to obvious and patent mistakes. The disallowance of travelling expenses was made after examining the details and applying the limit under rule 6D of the Income-tax Rules. The restriction of staff welfare expenses was made after considering the details and arriving at a reasonable estimate. The disallowance of car expenses was also based on the facts on record and the earlier approach adopted in the assessee's own case. None of these conclusions disclosed an obvious error capable of correction in rectification proceedings.

Conclusion: No mistake apparent from record was shown, so rectification was rightly refused and the issue was decided against the assessee.

Issue (iii): Whether the assessee could raise, for the first time before the Tribunal, the additional plea challenging the Assessing Officer's territorial jurisdiction and the timeliness of the notice and assessment.

Analysis: The Tribunal held that the jurisdictional objection was barred by the statutory scheme because such a challenge had to be taken within the time and in the manner prescribed by section 124(3) of the Income-tax Act. The plea on limitation was also found to be without substance in light of the assessment timeline and the statutory framework.

Conclusion: The additional jurisdictional and limitation plea was not permitted and did not assist the assessee.

Final Conclusion: The rectification application failed in entirety, and the appellate challenge to the refusal of rectification was rejected, leaving the disallowances and the assessment undisturbed.

Ratio Decidendi: A valid assessment under section 143(3) may be supported by a signed tax-computation sheet even if the computation is not embedded in the assessment order itself, and section 154 cannot be used to reopen or revise matters that were decided on appreciation of material and do not disclose a patent mistake apparent from the record.

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