Appellate enhancement under income tax law cannot assess fresh income sources outside the original assessment record.

Section 251 enhancement power is confined to the subject-matter of the assessment and to income sources considered by the Income-tax Officer, expressly or by necessary implication, for taxability. It does not authorise the appellate authority to travel outside the original record and assess fresh sources of income not processed in the assessment proceedings. The Explanation to section 251 allows consideration of matters arising out of the proceedings in which the order appealed against was passed, but it does not extend that jurisdiction to new matters never raised or examined before the assessing authority. Accordingly, appellate enhancement cannot be used to add undisclosed income from a fresh source.

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Issues: Whether the Appellate Assistant Commissioner could enhance the assessment by adding income from new sources not considered by the Income-tax Officer, and whether the Explanation to section 251 widened that power.

Analysis: The power of enhancement under section 251 of the Income-tax Act, 1961 is analogous to the power under section 31(3) of the Income-tax Act, 1922. That power is confined to the subject-matter of assessment or to sources of income which the Income-tax Officer had considered expressly or by necessary implication from the point of view of taxability. It does not permit the appellate authority to travel outside the record and discover or assess fresh sources of income not processed by the Income-tax Officer. The Explanation to section 251 permits consideration of matters arising out of the proceedings in which the appealed order was passed, but it does not extend to matters neither raised nor processed before the Income-tax Officer.

Conclusion: The Appellate Assistant Commissioner had no jurisdiction to add the amount as income from undisclosed sources, and the Explanation to section 251 did not enlarge that jurisdiction.

Ratio Decidendi: Appellate enhancement cannot be used to assess new sources of income not considered by the assessing authority from the point of view of taxability, and an appellate explanation cannot enlarge that jurisdiction beyond the matters processed in the original assessment proceedings.

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